Journal articles: 'Fiberboards'

1

Huang, Erzhuo, Yanwei Cao, Xinpeng Duan, Yutao Yan, Zhe Wang, and Chunde Jin. "Cross-Linked Chitosan as an Eco-Friendly Binder for High-Performance Wood-Based Fiberboard." International Journal of Polymer Science 2021 (July 1, 2021): 1–7. http://dx.doi.org/10.1155/2021/8671384.

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High-performance wood-based fiberboards with high strength and dimensional stability were fabricated by hot-pressing method using 2,5-dimethoxy-2,5-dihydrofuran (DHF) cross-linked chitosan (CS) as an eco-friendly binder. The effects of cross-linked chitosan on the mechanical properties and dimensional stability of wood-based fiberboards were investigated. It is evident that cross-linked chitosan addition was effective in improving mechanical properties and dimensional stability of wood-based fiberboards. The prepared wood-based fiberboard bonded by DHF cross-linked CS displayed optimum modulus of rupture (MOR) of 42.1 MPa, modulus of elasticity (MOE) of 3986.0 MPa, internal bonding (IB) strength of 1.4 MPa, and thickness swelling (TS) value of 16.3%. The improvement of physical and mechanical properties of wood-based fiberboards could be attributed to the amide linkages and hydrogen bonds between wood fibers and cross-linked chitosan. The high-performance wood-based fiberboards fabricated in this study may be a promising candidate for eco-friendly wood-based composites.

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Moezzipour, Bita, and Aida Moezzipour. "Thermal Behavior of Insulation Fiberboards Made from MDF and Paper Wastes." Drvna industrija 72, no. 3 (July 22, 2021): 245–54. http://dx.doi.org/10.5552/drvind.2021.2019.

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Today, recycling is becoming increasingly important. In recycling process, the product performance should also be considered. In this study, manufacturing insulation fiberboard, as a practical wood product from recycled fibers, was investigated. For this purpose, two types of waste (MDF wastes and waste paper) were recycled to fibers and used for producing insulation fiberboards. The target fiberboard density was 0.3 g/cm3. The ratio of waste paper to MDF waste recycled fibers (WP/RF) was considered at two levels of 70/30 and 50/50. Polyvinyl acetate adhesive was used as a variable in the board manufacturing process. The mechanical properties, dimensional stability, thermal conductivity, and fire resistance of the boards were evaluated. Besides, the thermal stability of fiberboards was studied using thermal analysis including thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The results showed that the insulation fiberboards had admissible mechanical properties and dimensional stability. The manufactured boards displayed low thermal conductivity, which proved to be well competitive with other insulation materials. The fiberboards manufactured with PVAc adhesive and WP/RF ratio of 50/50 had higher fire resistance compared to other treatments. Additionally, results of thermal analysis showed that the use of PVAc adhesive and WP/RF ratio of 50/50 leads to improved thermal stability. Overall, the recycled fibers from MDF and paper wastes appear to be appropriate raw materials for manufacturing thermal insulation panels, and use of PVAc adhesive can significantly improve thermal and practical properties of insulation fiberboards.

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Guo, Ming Hui, Yong Wang, and Fang Yan Liu. "Performance Analysis of Ammonium Lignosulfonate/Urea Formaldehyde-Free Fiberboards." Advanced Materials Research 113-116 (June 2010): 1774–78. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.1774.

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The tests on physical and mechanical properties of fiberboards made of wood fiber with ammonium lignosulphonate/urea as filling material are performed according to requirement of EU standards EN 622-2-2004 "Fibreboard-Specifications Part 2: Requirements for hardboard" reveal the reaction mechanism of formaldehyde-free fiberboards with ammonium lignosulfonate /urea as filling material through analysis of characteristics of chemical reactions on ammonium lignosulfonate and urea by FTIR and the chemical reaction analysis of C atom by ESCA. The results show that physical and mechanical properties of fiberboards with ammonium lignosulphonate/urea as filling material have reached the requirement of EU standards EN 622-2-2004, the forming of furan resin, the results of reaction between urea and furfural substances is main reason for the better physical and mechanical properties of lignin-based formaldehyde-free fiberboard.

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Park, Se-Hwi, Min Lee, Pureun-Narae Seo, Eun-Chang Kang, and Chun-Won Kang. "Acoustical properties of wood fiberboards prepared with different densities and resin contents." BioResources 15, no. 3 (May 20, 2020): 5291–304. http://dx.doi.org/10.15376/biores.15.3.5291-5304.

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The demand for noise control in residential environments is steadily increasing, but the currently available noise-reducing materials used in walls and floors are unsustainable and expensive. As an alternative, wood-fiber could be a good resource to manufacture eco-friendly acoustic materials. In this study, fiberboards were prepared by mixing wood-fibers (Pinus densiflora) with melamine-urea-formaldehyde resin adhesive, obtaining specimens with different final densities and resin contents. The acoustic, physical, and morphological properties of the fiberboards were investigated. The sound absorption was greatly influenced by the density of the fiberboard: lower densities showed higher sound absorption performances. Furthermore, the low-frequency absorption coefficient was higher for lower resin contents. The materials met all the criteria required by the Korean standards for fiberboards. As the density increased, the dimensional stability and the bending strength increased; in contrast, the physical properties were not affected by the resin content. Microscopy observations confirmed that specimens with different densities and resin contents had different porosities; the porosity was assumed to be the main property that governs the noise-reducing ability. Due to their eco-friendliness and inexpensiveness, these fiberboards offer themselves as efficient and effective alternative sound-absorbing materials.

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Ramos, Diego, Nour-Eddine El Mansouri, Francesc Ferrando, and Joan Salvadó. "All-lignocellulosic Fiberboard from Steam Exploded Arundo Donax L." Molecules 23, no. 9 (August 21, 2018): 2088. http://dx.doi.org/10.3390/molecules23092088.

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This paper explores the possibility of producing all-lignocellulosic fiberboards from Arundo donax L. as a source of lignocellulosic fibers with no synthetic binders. This raw material was steam exploded with a thermomechanical aqueous vapor process in a batch reactor. The Arundo donax raw material and its obtained pulp were characterized in terms of chemical composition and the results were compared to other lignocellulosic materials. The chemical composition of steam exploded Arundo fibers showed high cellulose and a moderate lignin content suggesting it was a good raw material for fiberboard production. The all-lignocellulosic fiberboards were produced on laboratory scale; using the steam exploded Arundo donax by means of a wet process. The effects of pressing pressure on physical and mechanical properties were evaluated and the conditions that optimize the responses were found. The analyzed properties were density (d); water absorption (WA); thickness swelling (TS); modulus of elasticity (MOE); modulus of rupture (MOR); and internal bond strength (IB). The tested levels of the pressing pressure range from 0.35 to 15 MPa. The optimum IB; MOE; MOR; WA and TS were 1.28 MPa, 7439 MPa, 40.4 MPa, 17.6% and 13.3%, respectively. The obtained fiberboards were of very good quality and more than satisfy the requirements of the relevant standard specifications.

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Hua, Guang Jun, Wei Min Fei, Ze Shun Liao, and Yong Xie. "Numerical Assessment on Edgewise Compressive Strength of Heavy Sandwich Fiberboard." Applied Mechanics and Materials 724 (January 2015): 74–78. http://dx.doi.org/10.4028/www.scientific.net/amm.724.74.

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The application status of heavy duty corrugated paperboard and honeycomb fiberboard were reviewed. In order to contrast the edgewise compressive strength of the two typical sandwich fiberboards, the finite element models of honeycomb fiberboard and AAB flute corrugated fiberboard with large sample size were established. By numerical simulation method, the effect of structure on the edgewise compressive strength were decoupled from the factor such as the materials, material consumption, sample size and shape, processing technology and environmental conditions etc. Under the same material, material consumption and sample size, bulking analysis based on numerical method was carried out. The results show that the edgewise compressive strength of both sides of the honeycomb fiberboard is about 50% higher than that of AAB flute corrugated fiberboard, and honeycomb fiberboard is similar to bi-isotropic material. The conclusions obtained are valuable to reasonable choice of the honeycomb fiberboard and heavy duty corrugated fiberboard and correct understanding the mechanical properties of the two sandwich fiberboard.

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Antov, Petar, L’uboš Krišt’ák, Roman Réh, Viktor Savov, and Antonios N. Papadopoulos. "Eco-Friendly Fiberboard Panels from Recycled Fibers Bonded with Calcium Lignosulfonate." Polymers 13, no. 4 (February 21, 2021): 639. http://dx.doi.org/10.3390/polym13040639.

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The potential of using residual softwood fibers from the pulp and paper industry for producing eco-friendly, zero-formaldehyde fiberboard panels, bonded with calcium lignosulfonate (CLS) as a lignin-based, formaldehyde free adhesive, was investigated in this work. Fiberboard panels were manufactured in the laboratory by applying CLS addition content ranging from 8% to 14% (on the dry fibers). The physical and mechanical properties of the developed composites, i.e., water absorption (WA), thickness swelling (TS), modulus of elasticity (MOE), bending strength (MOR), as well as the free formaldehyde emission, were evaluated according to the European norms. In general, only the composites, developed with 14% CLS content, exhibited MOE and MOR values, comparable with the standard requirements for medium-density fiberboards (MDF) for use in dry conditions. All laboratory-produced composites demonstrated significantly deteriorated moisture-related properties, i.e., WA (24 h) and TS (24 h), which is a major drawback. Noticeably, the fiberboards produced had a close-to-zero formaldehyde content, reaching the super E0 class (≤1.5 mg/100 g), with values, ranging from 0.8 mg/100 g to 1.1 mg/100 g, i.e., equivalent to formaldehyde emission of natural wood. The amount of CLS adhesive had no significant effect on formaldehyde content.

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Wang, Jiajun, Bo Wang, Junliang Liu, Lin Ni, and Jianzhang Li. "Effect of Hot-Pressing Temperature on Characteristics of Straw-Based Binderless Fiberboards with Pulping Effluent." Materials 12, no. 6 (March 20, 2019): 922. http://dx.doi.org/10.3390/ma12060922.

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This study aimed to improve straw-based fiberboard properties without resins by adding pulping effluent as well as to investigate the difference among boards under variable hot-pressing temperatures. The characterization of fiberboards produced from wheat straw under pressing temperatures ranging from 160 to 200 °C was first described. The surface appearance, surface chemistry, thermal transitions, and mechanical performance of the boards were evaluated to investigate the effect of varying hot-pressing temperature. The results indicated that the surface color of boards became darker when the temperature was above 190 °C. Additionally, Fourier transform infrared (FT-IR) measurements showed that more low-molecular constituents and hydrogen bonds were produced under higher pressing temperatures. Furthermore, the physical and mechanical property data were analyzed statistically using one-way analysis of variance (ANOVA) and Tukey’s tests (α = 0.05). The results demonstrated that straw-based fiberboards with effluent under 190 °C exhibited superior strength and water resistance capacities, and showed great potential in commercial decorating and packaging applications.

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Zhou, Xiaoyan, Lijuan Tan, Weidong Zhang, Chenglong Lv, Fei Zheng, Rong Zhang, Guanben Du, Bijun Tang, and Xueyuan Liu. "Enzymatic hydrolysis lignin derived from corn stover as an intrinsic binder for bio-composites manufacture: Effect of fiber moisture content and pressing temperature on boards’ properties." BioResources 6, no. 1 (December 4, 2010): 253–64. http://dx.doi.org/10.15376/biores.6.1.253-264.

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Binderless fiberboards from enzymatic hydrolysis lignin (EHL) and cotton stalk fibers were prepared under various manufacturing conditions, and their physico-mechanical properties were evaluated. Full factorial experimental design was used to assess the effect of fiber moisture content and pressing temperature on boards’ properties. In addition, differential scanning calorimetry (DSC) was used to obtain the glass transition temperature (Tg) of EHL. We found that both fiber moisture content and pressing temperature had significant effects on binderless fiberboards’ properties. High fiber moisture content and pressing temperature are suggested to contribute to the self-bonding improvement among fibers with lignin-rich surface mainly by thermal softening enzymatic hydrolysis lignin. In this experiment, the optimized pressing temperature applied in binderless fiberboard production should be as high as 190°C in accordance with the EHL Tg value of 189.4°C, and the fiber moisture content should be limited to less than 20% with a higher board density of 950 kg/m3 to avoid the delamination of boards during hot pressing.

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Jin, Chun De, Jian Li, and Rui Xian Zheng. "Study on the Interface Character of Drying Binderless Fiberboard." Advanced Materials Research 113-116 (June 2010): 1518–23. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.1518.

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The ways of chemical component analysis, chemical analysis photoelectron energy spectrum (ESCA) analysis and X ray diffraction were used to research and analyze the variation law of material (wood) chemical component, functional groups and cellulose crystallinity in the process of making board. The results showed that：(1) The maximum contents of holocellulose and pentosan were wood, in the next place were fiberboard, and the minimum one were binderless fiberboard. The maximum contents of α-cellulose were woodfiber, in the next place were wood, and the minimum one were binderless fiberboard. The minimum contents of xylogen were wood, in the next place were woodfiber, and the maximum one were binderless fiberboard. (2) The C1and C3 functional groups relative contents of woodfiber and binderless fiberboard were higher than wood. The C2 functional groups relative contents of wood were higher than woodfiber and binderless fiberboard. The C4 functional groups relative contents of woodfiber were zero, and the binderless fiberboards were higher than wood. (3)The maximum cellulose relative crystallinity was binderless fiberboard, in the next place was fiberboard, and the minimum one was wood.

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11

Wang, Wei, Hui Shen, Haiqiao Zhang, Yang Zhang, Yanji Zhou, and Danyang Zhao. "CHARACTERIZATION OF AROMATIC FIBERBOARDS." WOOD RESEARCH 66(3) 2021 66, no. 3 (July 20, 2021): 403–14. http://dx.doi.org/10.37763/wr.1336-4561/66.3.403414.

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For use as decoration panels, wood fiber was used to prepare a new type of aromatic fiberboard using hot-press technology that mixes spices and adhesives. Experiments showed that the use of different proportions of two kinds of spices, wormwood and lavender, mixed with waterborne acrylic adhesives, had a slight influence on the curing time and viscosity of the glue. The different mixtures equally affected the physical and mechanical properties of the fiberboard and the smells similarly affected brain wave frequencies. The experimental results showed that a 20% proportion of lavender and wormwood was optimal compared with 5%, 10%, and 15%, and this amount also provided the best health-care effect. This work provides the experimental data and a theoretical basis to achieve pharmacological and health-care effects for the development of aromatic and other special kinds of fiberboard for industrial applications.

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Antov, Petar, Viktor Savov, Ľuboš Krišťák, Roman Réh, and George I. Mantanis. "Eco-Friendly, High-Density Fiberboards Bonded with Urea-Formaldehyde and Ammonium Lignosulfonate." Polymers 13, no. 2 (January 10, 2021): 220. http://dx.doi.org/10.3390/polym13020220.

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The potential of producing eco-friendly, formaldehyde-free, high-density fiberboard (HDF) panels from hardwood fibers bonded with urea-formaldehyde (UF) resin and a novel ammonium lignosulfonate (ALS) is investigated in this paper. HDF panels were fabricated in the laboratory by applying a very low UF gluing factor (3%) and ALS content varying from 6% to 10% (based on the dry fibers). The physical and mechanical properties of the fiberboards, such as water absorption (WA), thickness swelling (TS), modulus of elasticity (MOE), bending strength (MOR), internal bond strength (IB), as well as formaldehyde content, were determined in accordance with the corresponding European standards. Overall, the HDF panels exhibited very satisfactory physical and mechanical properties, fully complying with the standard requirements of HDF for use in load-bearing applications in humid conditions. Markedly, the formaldehyde content of the laboratory fabricated panels was extremely low, ranging between 0.7–1.0 mg/100 g, which is, in fact, equivalent to the formaldehyde release of natural wood.

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Antov, Petar, Viktor Savov, Ľuboš Krišťák, Roman Réh, and George I. Mantanis. "Eco-Friendly, High-Density Fiberboards Bonded with Urea-Formaldehyde and Ammonium Lignosulfonate." Polymers 13, no. 2 (January 10, 2021): 220. http://dx.doi.org/10.3390/polym13020220.

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The potential of producing eco-friendly, formaldehyde-free, high-density fiberboard (HDF) panels from hardwood fibers bonded with urea-formaldehyde (UF) resin and a novel ammonium lignosulfonate (ALS) is investigated in this paper. HDF panels were fabricated in the laboratory by applying a very low UF gluing factor (3%) and ALS content varying from 6% to 10% (based on the dry fibers). The physical and mechanical properties of the fiberboards, such as water absorption (WA), thickness swelling (TS), modulus of elasticity (MOE), bending strength (MOR), internal bond strength (IB), as well as formaldehyde content, were determined in accordance with the corresponding European standards. Overall, the HDF panels exhibited very satisfactory physical and mechanical properties, fully complying with the standard requirements of HDF for use in load-bearing applications in humid conditions. Markedly, the formaldehyde content of the laboratory fabricated panels was extremely low, ranging between 0.7–1.0 mg/100 g, which is, in fact, equivalent to the formaldehyde release of natural wood.

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Kirsch, Alexander, Patrick Reuter, Alireza Kharazipour, and Markus Euring. "Comparision of Different Raw Densities and Board Thicknesses in the Production of Enzymatically Bonded Fiberboards." Journal of Materials Science Research 6, no. 2 (March 27, 2017): 69. http://dx.doi.org/10.5539/jmsr.v6n2p69.

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Reducing CO2 emissions for the long term is an important issue in countering climate change. For this reason, the use of renewable construction materials inter alia wood-based materials is becoming increasingly important. Wood based materials often depend on petrochemical-based binding agents, most of which contain and emit formaldehyde. This causes environmental and health-related difficulties that could be rectified by avoiding the utilization of these adhesives. For this purpose, enzymatically bonded medium-density fiberboards (MDF) with a targeted raw density of 650 kg/m³ and 750 kg/m³ and high-density fiberboards (HDF) with a density of 900 kg/m³ were produced in different thicknesses. Laccase-Mediator-System (LMS) was applied to manufacture the boards and to compare them to those glued with UF and inactivated laccase, respectively. These panels were tested in terms of their physical technical properties, such as internal bond strength (IB), modulus of rupture (MOR) and thickness swelling (TS) after 24 h immersion. The aim was to show the correlation between density and these properties for fiberboards bonded this way. Most panels meet the requirements of the European standard when LMS and UF-resin were used. The possibility to produce fiberboards bonded with alternative bonding agents opens up the way to alternative, innovative, healthy and environmental-friendly wood based products.

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Syamani, Firda Aulya, Bambang Subiyanto, and Muhamad Yusram Massijaya. "Termite Resistant Properties of Sisal Fiberboards." Insects 2, no. 4 (October 31, 2011): 462–68. http://dx.doi.org/10.3390/insects2040462.

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EVON, Philippe, Justine Vinet, Matthieu Rigal, Laurent Labonne, Virginie Vandenbossche, and Luc Rigal. "New insulation fiberboards from sunflower cake with improved thermal and mechanical properties." Journal of Agricultural Studies 3, no. 2 (June 30, 2015): 194. http://dx.doi.org/10.5296/jas.v3i2.7738.

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New thermal insulation fiberboards were manufactured by compression molding from a cake generated during the sunflower biorefinery. Fiberboards were cohesive mixtures of a natural binder and lignocellulosic fibers from sunflower cake. The natural binder ensured the board cohesion, and fibers acted as reinforcing fillers. The influence of molding conditions, i.e. binder type and binder content, on board density, mechanical and heat insulation properties was examined. The medium-density board containing 20% starch-based binder was a good compromise between mechanical and heat insulation properties (78 mW/m K thermal conductivity). It could be positioned on walls and ceilings for thermal insulation of buildings.

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Lv, Li Hua, Min Zuo, Chun Yan Wei, Xiao Wang, and Ke Wang. "Fabrication and Mechanical Properties Analysis of Flame-Retardant Fiberboards Made of Abandoned Flax Fibers and Polyurethanes." Advanced Materials Research 627 (December 2012): 892–95. http://dx.doi.org/10.4028/www.scientific.net/amr.627.892.

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In this paper, abandoned flax fibers were adopted as reinforcing materials, polyurethane particles were adopted as matrix materials. Through blend mastication and hot-pressing methods to exploit flame-retardant fiberboards, which were made of abandoned flax fibers and polyurethanes. This paper explored the mechanical properties and flame-retardant property.Tensile strength, bending strength and impact strength were selected as mechanical properties' test index, limiting oxygen index was selected as flame-retardant property's test index. Abandoned flax fibers mass fraction, hot-pressing temperature, hot-pressing time and flame-retardant mass fraction acted as level of factor. The optimized processing conditions were concluded through orthogonal experiment and the range analysis: abandoned flax fibers mass fraction 45%, hot-pressing temperature 170°C, hot-pressing time 6 min, flame-retardant mass fraction 10%. This paper studied the solution of the abandoned fibers’ reuse. At the same time, it provided theoretical guidance for the further development of flame- retardant polyurethane fiberboard.

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Syuhada, Ahmad, and Muhammad Nizar Machmud. "Influence of Forestry and Agriculture By-Products as Filler Materials on Thermal Conductivity of Fiberboard Panels Applied for Heat-Conditioned Building Partition Wall." Defect and Diffusion Forum 402 (July 2020): 56–60. http://dx.doi.org/10.4028/www.scientific.net/ddf.402.56.

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This paper presents a study on the thermal conductivity of fiberboards designed to find a proper board that would be applicable for heat-conditioned building walls. Fibers produced from forestry by-products processing, such as teak (tectona grandis), meranti ( HYPERLINK "https://id.wikipedia.org/w/index.phptitle=Shorea_acuminata&action=edit&redlink=1" \o "Shorea acuminata (halaman belum tersedia)" shorea acuminata), bayur (pterospermum javanicum) and also from agriculture by-products such as rice husk and rice bran, were then used as the materials prepared for the filler. Results showed that thermal conductivity of the board panel with such fibers were 0.0217 kW/m°C, 0.0330 kW/m°C, 0.0287 kW/m°C, 0.0253 kW/m°C and 0.0423 kW/m°C, respectively. Fiberboard panel with teak fiber as filler had the lowest thermal conductivity. It therefore could be used to significantly reduce the rate of heat transfer in such wall.

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Gustafsson, Jesper, Mikael Landberg, Veronika Bátori, Dan Åkesson, Mohammad J. Taherzadeh, and Akram Zamani. "Development of Bio-Based Films and 3D Objects from Apple Pomace." Polymers 11, no. 2 (February 8, 2019): 289. http://dx.doi.org/10.3390/polym11020289.

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Extensive quantities of apple pomace are generated annually but its disposal is still challenging. This study addresses this issue by introducing a new, environmentally-friendly approach for the production of sustainable biomaterials from apple pomace, containing 55.47% free sugars and a water insoluble fraction, containing 29.42 ± 0.44% hemicelluloses, 38.99 ± 0.42% cellulose, and 22.94 ± 0.12% lignin. Solution casting and compression molding were applied to form bio-based films and 3D objects (i.e., fiberboards), respectively. Using glycerol as plasticizer resulted in highly compact films with high tensile strength and low elongation (16.49 ± 2.54 MPa and 10.78 ± 3.19%, respectively). In contrast, naturally occurring sugars in the apple pomace showed stronger plasticizing effect in the films and resulted in a fluffier and connected structure with significantly higher elongation (37.39 ± 10.38% and 55.41 ± 5.38%, respectively). Benefiting from the self-binding capacity of polysaccharides, fiberboards were prepared by compression molding at 100 °C using glycerol or naturally occurring sugars, such as plasticizer. The obtained fiberboards exhibited tensile strength of 3.02–5.79 MPa and elongation of 0.93%–1.56%. Possible applications for apple pomace biomaterials are edible/disposable tableware or food packaging.

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Gao, Shishuai, Yupeng Liu, Chunpeng Wang, Fuxiang Chu, Feng Xu, and Daihui Zhang. "Synthesis of Lignin-Based Polyacid Catalyst and Its Utilization to Improve Water Resistance of Urea–formaldehyde Resins." Polymers 12, no. 1 (January 9, 2020): 175. http://dx.doi.org/10.3390/polym12010175.

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In this study, a lignin-based polyacid catalyst was synthesized via two steps to enhance water resistance of urea–formaldehyde (UF) resins. The first steps involved a hydroxymethylation reaction to increase the hydroxyl content in lignin. Then, hydroxymethylated lignins were reacted with maleic anhydride to form maleated lignin-based polyacids. The acid groups were expected to function as acid catalysts to catalyze the curing process of UF resin. In order to elucidate the structural variation, 3-methoxy-4-hydroxyphenylpropane as a typical guaiacol lignin structural unit was used as a model compound to observe the hydroxymethylation and the reaction with maleic anhydride analyzed by 1H and 13C NMR. After the structural analysis of synthesized lignin-based polyacid by FTIR and 13C NMR, it was used to produce UF resin as an adhesive in plywood and medium density fiberboard (MDF) production, respectively. The results showed that when the addition of lignin-based polyacid was 5% in plywood, it could effectively improve the water resistance of UF resins as compared to commercial additive NH4Cl. It also exhibited a lower formaldehyde emission. Like plywood, lignin-based catalysts used in medium density fiberboard production could not only maintain the mechanical properties, but also inhibit the water adsorption of fiberboards.

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Halvarsson, Sören, Håkan Edlund, and Magnus Norgren. "Manufacture of High-Performance Rice-Straw Fiberboards." Industrial & Engineering Chemistry Research 49, no. 3 (February 3, 2010): 1428–35. http://dx.doi.org/10.1021/ie901272q.

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Araújo Junior, Celso Pires, Carlos Alberto Cáceres Coaquira, Adriano Lincoln Albuquerque Mattos, Men de Sá Moreira de Souza Filho, Judith Pessoa de Andrade Feitosa, João Paulo Saraiva de Morais, and Morsyleide de Freitas Rosa. "Binderless Fiberboards Made from Unripe Coconut Husks." Waste and Biomass Valorization 9, no. 11 (June 23, 2017): 2245–54. http://dx.doi.org/10.1007/s12649-017-9979-9.

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Sosiati, Harini, Supatmi, Dwi Astuti Wijayanti, Ragil Widyorini, and Soekrisno. "Properties of the Treated Kenaf/Polypropylene (PP) Composites." Advanced Materials Research 896 (February 2014): 566–69. http://dx.doi.org/10.4028/www.scientific.net/amr.896.566.

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Untreated and treated kenaf fibers were used in the fabrication of kenaf/polypropylene (PP) composites. The ratio of the fibers as fillers and PP as matrix was 40:60 in wt%. Small amounts of maleic anhydride grafted polypropylene (MAPP) were added as a coupling agent. Fourier transform infrared (FTIR) spectroscopy was used to estimate the cellulose contained in the treated kenaf fibers. A flexural test of the composites was conducted by referring to JIS (A 5905, 1994, Fiberboards). A composite with alkali-treated fiber had better properties (modulus of rupture (MOR) and elasticity (MOE), absorbed water and thickness in swelling) than that with a combination of steam-alkali and alkali-bleaching treated fibers, and untreated fibers. The dispersion characteristic of the fibers within the polymer matrix has been suggested as one of the significant factors affecting the composite properties. These composites are classified as medium density fiberboard (MDF, JIS, type 30 and 25).

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Mikame, Keigo, Yasuko Yamamoto, and Masamitsu Funaoka. "Refining of fiberboards through the phase-separation system." Transactions of the Materials Research Society of Japan 33, no. 4 (2008): 1201–4. http://dx.doi.org/10.14723/tmrsj.33.1201.

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Hoareau, William, Francielli B. Oliveira, Stephane Grelier, Bernard Siegmund, Elisabete Frollini, and Alain Castellan. "Fiberboards Based on Sugarcane Bagasse Lignin and Fibers." Macromolecular Materials and Engineering 291, no. 7 (July 14, 2006): 829–39. http://dx.doi.org/10.1002/mame.200600004.

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Gu, Jin, Chuanshuang Hu, Rui Zhong, Dengyun Tu, Hong Yun, Weiwei Zhang, and Shao-Yuan Leu. "Isolation of cellulose nanocrystals from medium density fiberboards." Carbohydrate Polymers 167 (July 2017): 70–78. http://dx.doi.org/10.1016/j.carbpol.2017.02.110.

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Haj-Ali, Rami, Joonho Choi, Bo-Siou Wei, Roman Popil, and Michael Schaepe. "Refined nonlinear finite element models for corrugated fiberboards." Composite Structures 87, no. 4 (February 2009): 321–33. http://dx.doi.org/10.1016/j.compstruct.2008.02.001.

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Su, Chu Wang, Quan Ping Yuan, Wei Xing Gan, Jing Da Huang, and Yuan Yi Huang. "The Research on Wood Fiber/Stainless Steel Net Electromagnetic Shielding Composite Board." Key Engineering Materials 525-526 (November 2012): 437–40. http://dx.doi.org/10.4028/www.scientific.net/kem.525-526.437.

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In this paper, the electromagnetic shielding function composite fiberboards were made by filling with stainless steel nets dipped with urea-formaldehyde resin adhesive (UF) and the influence of different mesh and layers of nets on its electromagnetic shielding performance, static bending strength (MOR), modulus of elasticity (MOE) and internal bonding strength (IB) were studied. The results showed that: when the mechanical strength was enough and the frequency was in range of 50MHz to 1GHz, of all the composite fiberboards filled with one-layer stainless steel net, the one filled with 60 mesh was best and the minimum shielding effectiveness (SE) was 36.22 dB; when filled with two-layers nets, the one filled with 80 mesh was best and the minimum SE was 42.54dB; when filled with three-layers nets, the one filled with 60 mesh was best and the minimum SE was 50.77dB.

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Matygulina, Venera Nurullovna, Natalya Geraldovna Chistova, and Alexander Yuryevich Vititnev. "DEPENDENCE OF STRENGTH OF FIBERBOARDS FROM TERMS OF PREPARATION OF WOOD FIBER SEMI-FINISHED PRODUCTS." chemistry of plant raw material, no. 4 (December 21, 2020): 467–74. http://dx.doi.org/10.14258/jcprm.2020048190.

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Despite the reduced demand for fiber boards, research related to their manufacture is relevant, since the production of wood-based materials significantly contributes to solving the problem of the integrated use of wood raw materials. The paper presents the results of experimental studies reflecting the dependence of the strength characteristics of dry and wet wood fiber boards on the structural and technological parameters of grinding plants of various modifications. The experiments were carried out in laboratory facilities and in the production environment on existing industrial equipment. Based on the results of processing multifactor experiments implemented in a second-order B plan, a mathematical description was obtained of the dependence of the tensile strength during static bending of solid wood fiber boards of the dry and wet production method on the gap between the grinding disks, wear of the segments and the concentration of wood fiber mass. The obtained regression models are adequate to the process and can be applied in practice to predict the strength characteristics of fiberboards depending on the parameters of the grinding process. As a result of the analysis of the calculated and graphical dependences obtained on the basis of studies in the production environment on the existing equipment, it is possible to determine what parameters on the grinding equipment must be set in order to obtain the necessary physical and mechanical properties of the fiberboard.

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Dymchenko, V., N. Petrusheva, E. Ilyazova, and M. Lipilin. "Preliminary preparation of water supply system for the headbox through Pulsar water treatment plant." E3S Web of Conferences 285 (2021): 07022. http://dx.doi.org/10.1051/e3sconf/202128507022.

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Today, the main quality criterion in the production of fiberboards is a uniform supply of mixed wood fiber slurry to the mesh part of the press using a high pressure headbox. The interaction of water, various inclusions of waste water, wood-fiber semi-finished product, as well as stainless steel provokes occurrence of chemical reactions that cause intense corrosive destruction of working parts of the inlet. At present, the study of corrosion of the inlet structure pursues the goal of determining characteristic factors caused by the aggressive environment arising at the time of mixing the wood-fiber suspension with the water flow. The analysis of fiberboard production by the wet method examines the possibility of introducing equipment designed for high-quality water treatment with the possibility of cleaning it from various impurities. Pulsar water treatment system is designed for oxidation of soluble metals with their conversion into filterable forms, cleaning from organic and inorganic contaminants due to filters of soft and coarse cleaning using AS sorbents. The station operates autonomously with control of the output gravity for up to 10 years with annual losses of no more than 10% of filter elements.

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Herzog, Andreas, Ulrich Vogt, Oliver Kaczmarek, Raoul Klingner, Klaus Richter, and Heiko Thoemen. "Porous SiC Ceramics Derived from Tailored Wood-Based Fiberboards." Journal of the American Ceramic Society 89, no. 5 (May 2006): 1499–503. http://dx.doi.org/10.1111/j.1551-2916.2006.00922.x.

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Ye, X. Philip, James Julson, Monlin Kuo, Al Womac, and Deland Myers. "Properties of medium density fiberboards made from renewable biomass." Bioresource Technology 98, no. 5 (March 2007): 1077–84. http://dx.doi.org/10.1016/j.biortech.2006.04.022.

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Walther, Thomas, S. Nami Kartal, Won Joung Hwang, Kenji Umemura, and Shuichi Kawai. "Strength, decay and termite resistance of oriented kenaf fiberboards." Journal of Wood Science 53, no. 6 (December 2007): 481–86. http://dx.doi.org/10.1007/s10086-007-0902-z.

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Pang, Xu, Tianchi Wang, and Jian Kong. "Fabrication of lightweight ZrO2 fiberboards using hollow ZrO2 fibers." Ceramics International 46, no. 7 (May 2020): 9103–8. http://dx.doi.org/10.1016/j.ceramint.2019.12.159.

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Ammar, Mohamed, Nabawia Mechi, Abdelmoumen Hidouri, and Elimame Elaloui. "Fiberboards based on filled lignin resin and petiole fibers." Journal of the Indian Academy of Wood Science 15, no. 2 (October 5, 2018): 120–25. http://dx.doi.org/10.1007/s13196-018-0216-3.

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da Silva César, Antônia Amanda, Lina Bufalino, Arthur Setsuo Tahara, Ricardo Gabriel de Almeida Mesquita, Tiago Marcolino de Souza, Láysa Maria Ferreira Andrade, Fábio Akira Mori, and Lourival Marin Mendes. "Pretreated unbleached cellulose screen reject for cement-bonded fiberboards." European Journal of Wood and Wood Products 77, no. 4 (May 20, 2019): 581–91. http://dx.doi.org/10.1007/s00107-019-01422-x.

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Cheng, Ziwen, Xiaotong Li, Shuting Yuan, Xin Sun, Jian Kong, and Tianchi Wang. "Fabrication of ultralight heat-insulating hollow-fiber mullite fiberboards." Ceramics International 47, no. 21 (November 2021): 29576–83. http://dx.doi.org/10.1016/j.ceramint.2021.07.127.

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38

Westin, M., R. Simonson, and B. Östman. "Kraft lignin wood fiberboards - The effect of kraft lignin addition to wood chips or board pulp prior to fiberboard production." Holz als Roh- und Werkstoff 58, no. 6 (January 29, 2001): 393–400. http://dx.doi.org/10.1007/s001070050451.

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39

Zyryanov, Mikhail A., Sergey O. Medvedev, and Aleksandr P. Mokhirev. "Effect of Addition of Chopped Needles on the Fiberboard Quality Indicators." Lesnoy Zhurnal (Forestry Journal), no. 3 (May 20, 2021): 125–32. http://dx.doi.org/10.37482/0536-1036-2021-3-125-132.

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Until recently, only the trunk of a tree was recognized as valuable in the forest industry, and everything else, including the crown, was considered waste. Logging wastes cluttered felling sites and created a favorable environment for habitation and reproduction of forest pests, as well as contributed to the emergence of forest fires. Today, wood greens are used as a raw material in the logging industry for the production of pellet fuels; in the woodchemical complex for the manufacture of chlorophyll-carotene pastes, sodium chlorophyllin, and coniferous healing extract; in agro-industrial production to obtain coniferous vitamin flour. Analysis of literature sources showed that fibreboards are widely used in housing construction as structural, finishing, and insulating materials. The advantage of fibreboards is the ability to impart special properties to them, such as fire resistance, water resistance, biostability, soundproofing, and heat-insulating ability by adding various components to the fibreboard at the manufacturing stage. Studies of the effect of adding coniferous flour on the quality indicators and physical and mechanical parameters of the finished fiberboard have been carried out in order to solve the problem of expanding the raw material base for fiberboard production. The possibility of using this raw material in the form of coniferous flour in the production of fiberboard has been substantiated. The influence of the percentage of needle flour in the total volume of wood fiber pulp and particle size on the qualitative indicators of the material is shown. Statistical and mathematical equations and graphical dependencies have been obtained. They allow predicting the indicators of fiberboards for a given content and particle size of flour from coniferous greens. The optimal size of the particles of coniferous flour and its content in the fibreboard at which the values of physical and mechanical indicators of the finished product meet the requirements of the State Standard GOST 4598-86 are determined. For citation: Zyryanov M.A., Medvedev S.O., Mokhirev A.P. Effect of Addition of Chopped Needles on the Fiberboard Quality Indicators. Lesnoy Zhurnal [Russian Forestry Journal], 2021, no. 3, pp. 125–132. DOI: 10.37482/0536-1036-2021-3-125-132

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Orlowski, Kazimierz A., Przemyslaw Dudek, Daniel Chuchala, Wojciech Blacharski, and Tomasz Przybylinski. "The Design Development of the Sliding Table Saw Towards Improving Its Dynamic Properties." Applied Sciences 10, no. 20 (October 21, 2020): 7386. http://dx.doi.org/10.3390/app10207386.

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Cutting wood with circular saws is a popular machining operation in the woodworking and furniture industries. In the latter sliding table saws (panel saws) are commonly used for cutting of medium density fiberboards (MDF), high density fiberboards (HDF), laminate veneer lumber (LVL), plywood and chipboards of different structures. The most demanded requirements for machine tools are accuracy and precision, which mainly depend on the static deformation and dynamic behavior of the machine tool under variable cutting forces. The aim of this study is to present a new holistic approach in the process of changing the sliding table saw design solutions in order to obtain a better machine tool that can compete in the contemporary machine tool market. This study presents design variants of saw spindles, the changes that increase the critical speeds of spindles, the measurement results of the dynamic properties of the main drive system, as well as the development of the machine body structure. It was proved that the use of only rational imitation in the spindle design on the basis of the other sliding table saws produced does not lead to the expected effect in the form of correct spindle operation.

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Unbehaun, H., S. Konig, D. Spindler, and G. Kerns. "Enzymatic modification of lignocellulosic substances for the production of fiberboards." Moscow University Chemistry Bulletin 63, no. 2 (April 2008): 126–30. http://dx.doi.org/10.3103/s002713140802017x.

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Uitterhaegen, Evelien, Quang Hung Nguyen, Othmane Merah, Christian V. Stevens, Thierry Talou, Luc Rigal, and Philippe Evon. "New Renewable and Biodegradable Fiberboards from a Coriander Press Cake." Journal of Renewable Materials 4, no. 3 (June 7, 2016): 225–38. http://dx.doi.org/10.7569/jrm.2015.634120.

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Lee, Min, Sang-Bum Park, and Sang-Min Lee. "Effect of Carbonization Temperature on Hygric Performance of Carbonized Fiberboards." Journal of the Korean Wood Science and Technology 42, no. 5 (September 25, 2014): 615–23. http://dx.doi.org/10.5658/wood.2014.42.5.615.

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Ji, Xiaodi, Yue Dong, Ruidong Yu, Wenxin Du, Xue Gu, and Minghui Guo. "Simple production of medium density fiberboards (MDF) reinforced with chitosan." Holzforschung 72, no. 4 (March 28, 2018): 275–81. http://dx.doi.org/10.1515/hf-2017-0101.

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AbstractA simple and efficient method was developed for preparing medium density fiberboard (MDF) reinforced with chitosan via the traditional hot-press manufacturing process. The mechanical and dimensional properties of the MDF were investigated as a function of the chitosan amount. At the 4% level of added chitosan, the MDF reached the optimal performance and met completely the requirements of the Chinese national standard GB/T 11718-2009. Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS) and X-ray powder diffraction (XRD) characterizations revealed that wood fibers and chitosan might interact with each other through the formation of hydrogen and amide bonds during the hot-pressing process. The fracture surfaces of the MDFs are indicative for strong bonds at the interface, which explain the excellent MDF performance.

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Cui, Tongtong, Yan Li, Yanfang Pang, Xiaosheng Liu, Huidong Su, An Mao, Qi Li, and Yifu Yuan. "Properties of Fiberboards Bonded by Decomposed Polyurethane Foams and Isocyanate." American Journal of Agriculture and Forestry 7, no. 6 (2019): 315. http://dx.doi.org/10.11648/j.ajaf.20190706.21.

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Tsvetkov, V. E., Yu A. Semochkin, and A. A. Nikitin. "A Technology for Production of Fiberboards Based on Cotton Stalks." Polymer Science, Series D 12, no. 3 (July 2019): 328–30. http://dx.doi.org/10.1134/s1995421219030237.

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He, Zhen, Yaodong Jia, Sam Wang, Mehrdad Mahoutian, and Yixin Shao. "Maximizing CO2 sequestration in cement-bonded fiberboards through carbonation curing." Construction and Building Materials 213 (July 2019): 51–60. http://dx.doi.org/10.1016/j.conbuildmat.2019.04.042.

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Domínguez-Robles, Juan, Quim Tarrés, Manel Alcalà, Nour-Eddine El Mansouri, Alejandro Rodríguez, Pere Mutjé, and Marc Delgado-Aguilar. "Development of high-performance binderless fiberboards from wheat straw residue." Construction and Building Materials 232 (January 2020): 117247. http://dx.doi.org/10.1016/j.conbuildmat.2019.117247.

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Vitrone, Federica, Diego Ramos, Francesc Ferrando, and Joan Salvadó. "Binderless fiberboards for sustainable construction. Materials, production methods and applications." Journal of Building Engineering 44 (December 2021): 102625. http://dx.doi.org/10.1016/j.jobe.2021.102625.

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Jakimovska Popovska, Violeta, Borche Iliev, and Ivo Spiroski. "Characteristics of Medium Density Fiberboards for Furniture Production and Interior Application." South East European Journal of Architecture and Design 2016 (March 23, 2016): 1–5. http://dx.doi.org/10.3889/seejad.2016.10013.

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BACKGROUND: The paper analyzes the properties of medium density fiberboards (MDF) intended for furniture production and interior application. Because MDF panels are one of the mostly used wood-based panels in furniture production sector in the Republic of Macedonia it is important to know and understand their basic physical and mechanical properties. AIM: For better understanding of MDF panels and their proper end use by the furniture constructors and designers, physical and mechanical properties of MDF panels present in the market are tested.MATERIALS AND METHODS: Commercially produced MDF panels taken from one company from wood-based panel market were tested. Evaluation of the quality of the panels was made on the basis of the obtained results for the physical and mechanical properties of the panels. Properties of MDF were tested according to the national MKS standards and European norms.RESULTS: Tested MDF panels present on our market are characterized by good physical and mechanical properties that meet the requirements of the standards for MDF for use in dry conditions including furniture production and interior applications.CONCLUSIONS: It is recommended to avoid application of these MDF panels in high humidity conditions for a longer exploitation period. For this kind of applications, such as bathroom areas, the furniture constructors and interior designers should consider use of MDF.H type of panel for application in high humidity conditions, which will provide good dimensional stability of the products during whole exploitation period.

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Journal articles on the topic 'Fiberboards'

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