Relevant bibliographies by topics / Wood fibre processing

Academic literature on the topic 'Wood fibre processing'

Author: Grafiati
Published: 10 December 2022
Last updated: 19 February 2023

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Journal articles on the topic "Wood fibre processing"

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Fernando, Dinesh, Peter Rosenberg, Erik Persson, and Geoffrey Daniel. "Ultrastructural aspects of fibre development during the stone groundwood process: New insights into derived pulp properties." Holzforschung 61, no. 5 (August 1, 2007): 532–38. http://dx.doi.org/10.1515/hf.2007.094.

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Abstract A study was performed on stone groundwood (SGW) pulps produced on a pilot scale. The behaviour of selected juvenile and mature Norway spruce wood samples was investigated. As revealed by standard tests, sheets formed from juvenile wood showed improved light scattering properties, improved tear and tensile strength, and higher sheet density compared to those formed from mature wood. Scanning electron microscopy indicated that the differences are likely related to the manner of fibre processing and development at the ultrastructural level. Mature wood fibres showed greater fibre end breakage, a smaller long-fibre fraction, enhanced S1 fibrillation and frequently open fibres. In contrast, juvenile fibres had a 14% higher long-fibre fraction and showed typical S2 fibrillation. Fibre development of juvenile wood showed fibrillation features similar to those previously reported for thermomechanical pulp fibres. In both cases, the structural hierarchy of the wood fibre cell wall and the microfibril angle of S2 and S1 layers govern cell-wall splitting and fibrillation progression. The superior quality of the fibre furnish prepared from juvenile fibres compared to mature fibres with SGW pulping may offer an alternative process for more effective utilisation of raw materials such as top logs rich in juvenile wood.
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Panthapulakkal, S., and M. Sain. "Preparation and Characterization of Cellulose Nanofibril Films from Wood Fibre and Their Thermoplastic Polycarbonate Composites." International Journal of Polymer Science 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/381342.

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The aim of this study was to develop cellulose-nanofibril-film-reinforced polycarbonate composites by compression molding. Nano fibres were prepared from wood pulp fibres by mechanical defibrillation, and diameter distribution of the fibres produced was in the range of 1–100 nm. Nanofibre films were prepared from the nanofibre suspensions and were characterized in terms of strength properties, crystallinity, and thermal properties. Strength and modulus of the nano fibre films prepared were 240 MPa and 11 GPa, respectively. Thermal properties of the sheets demonstrated the suitability of processing fibre sheets at high temperature. Tensile properties of the films subjected to composite-processing conditions demonstrated the thermal stability of the fibre films during the compression molding process. Nanocomposites of different fibre loads were prepared by press-molding nano fibre sheets with different thickness in between polycarbonate sheet at 205°C under pressure. The tensile modulus and strength of the polycarbonate increased with the incorporation of the fibres. The strength of the thermoplastic increased 24% with 10% of the fibres and is increased up to 30% with 18% of the fibres. Tensile modulus of the polycarbonate demonstrated significant enhancement (about 100%).
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Cucharero, Jose, Sara Ceccherini, Thad Maloney, Tapio Lokki, and Tuomas Hänninen. "Sound absorption properties of wood-based pulp fibre foams." Cellulose 28, no. 7 (March 7, 2021): 4267–79. http://dx.doi.org/10.1007/s10570-021-03774-1.

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Abstract In this study, sound absorbing materials were produced through foam forming technique using hardwood and softwood pulps with varying chemical composition, ultrastructural, and morphological properties as raw materials. The sound absorption properties of the produced foams were measured and related to the ultrastructure and the morphology of the pulp fibres. All the fibre foams provided sound absorption properties comparable to those of conventional porous materials used for acoustic purposes. In general, further processing, as well as smaller fibre dimensions contribute to improve the sound absorption properties of the pulp fibre foams. The results provide valuable insight on the optimization of wood-based sound absorbing materials. Graphic abstract
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Matygulina, Venera, Natalya Chistova, Aleksandr Vititnev, and Roman Chistov. "Dry grinding of waste wood fiberboard: Theoretical and practical aspects affecting the resulting fiber quality." BioResources 16, no. 4 (October 20, 2021): 8152–71. http://dx.doi.org/10.15376/biores.16.4.8152-8171.

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This paper presents the results of research on the treatment of secondary wood fibre semi-finished materials using a dry-grinding-type rotary cutting mill and the possibility of their use in finished products for various purposes. The physical phenomena, processes, and regularities of the treatment of secondary wood fibre materials in dry processing conditions were determined and evaluated. The influence of grinding plant design parameters on wood fibre quality indices was evaluated. Mechanical effects on wood fibre waste of face-cross cutting (cutting, crumpling, collapsing, and breaking) and the dry grinding environment (breaking, collision, defibering, and fibrillation) was studied. These phenomena contribute to the formation of external and internal fibrillation of secondary wood fibre and an increase in the specific surface area. This is achieved in the absence of high temperatures and pressure, in the absence of chemical additives, and without the application of water and vapour. The effectiveness of secondary wood fibre semi-finished material treatment was demonstrated under dry processing conditions, thus confirming the environmental and economic feasibility of this method.
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Dickson, Alan, Armin Thumm, Karl Murton, and David Sandquist. "The influence of mechanical pulping treatment on the physical properties of wood fibre plastic composites." BioResources 15, no. 3 (May 29, 2020): 5532–45. http://dx.doi.org/10.15376/biores.15.3.5532-5545.

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Medium density fibreboard (MDF) fibres produced by a mechanical pulping process have shown potential for reinforcement in natural fibre composites (NFCs). In this work, the effect of process options, available in a pilot-scale fibre processing facility, on NFC properties were investigated. These were: a) refining energy; b) pre-treatment by sulphonation (i.e. chemi-thermo-mechanical pulping (CTMP)) and c) whether the extractives stream (i.e. the plug screw pressate) was discarded or included with the fibre. There were improvements in composite performance with refining energy, although these were not strong or consistent across composite properties. The CTMP fibres gave a substantial improvement over conventional MDF fibres in flexural, tensile, and impact properties, which may be due to improved fibre-matrix interfacial properties because of better mechanical interlocking and the removal of extractives.
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Dickson, Alan R., and David Sandquist. "Mode of wood fibre breakage during thermoplastic melt processing." Composites Part A: Applied Science and Manufacturing 112 (September 2018): 496–503. http://dx.doi.org/10.1016/j.compositesa.2018.07.004.

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Vititnev, Aleksandr, Roman Marchenko, Anastasiya Rubinskaya, and Anna Shishmareva. "Modeling of internally recycled material in fibreboard production facility as a tool for economic and environmental assessment." BioResources 16, no. 4 (August 4, 2021): 6587–98. http://dx.doi.org/10.15376/biores.16.4.6587-6598.

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A rationale is presented for the wood fibre process modeling of internally recycled content in fibreboard production. Experimental studies were employed to obtain mathematical dependences in order to confirm the possibility of reusing wood fibre at various stages of the technological process. A wood fibre process model of internally recycled content was accrued out in which each processing stage was presented separately. Two methods for the preparation of wood fibre for reuse in fibreboard production were considered. To assess the effectiveness of the technologies proposed, the process modeling of internally recycled content was assessed from an economic and environmental point of view.
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Bledzki, Andrzej K., and Omar Faruk. "Microcellular Wood Fibre Reinforced Polypropylene Composites in an Injection Moulding Process." Cellular Polymers 21, no. 6 (November 2002): 417–29. http://dx.doi.org/10.1177/026248930202100601.

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Microcellular foams of polypropylene containing wood fibres, cell sizes on the order of 10 to 50 μm were produced by injection moulding. The relationships of processing/structure/property were investigated for wood fibre-thermoplastics composites foaming with a chemical blowing agent. Wood polypropylene composites (WPC) of different wood content (30%, 40%, 50% and 60% by weight) were prepared using maleic anhydride-polypropylene copolymer (5% relative to the wood fibre content) as a coupling agent. Measurement of density, cell size, void content, tensile and flexural test of the prepared WPC were carried out. The shape and distribution of the voids were investigated by optical photo examination of longitudinal sections of specimens, using a polishing technique and reflected light microscopy. The density of foamed composites decreased about 24%. The cell morphology and foam properties showed improvement when the coupling agent was added. Water absorption and scanning electron microscope of the composites also investigated.
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Weigl, Martin, Gerald Maschl, Rupert Wimmer, and Roland Mitter. "Within-process and seasonal changes during industrial production of high-density fibreboard. Part 2: PLS modelling of chemical alterations, refining conditions and panel thickness swell." Holzforschung 66, no. 5 (July 1, 2012): 673–78. http://dx.doi.org/10.1515/hf-2012-0033.

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Abstract Wood species, carbohydrate composition and the content of extractives were determined from extracted wood chips and refiner fibres over 1 year of sampling at an industrial high-density fibreboard (HDF) plant. Correlations were found among processing variables (discharge screw flow, digester and refiner pressure, and refiner power consumption) and the analysed composition of raw materials and semi-finished product based on partial least squares regression (PLSR) analysis. Moreover, correlations between the degree of hemicellulose degradation and process variables were found. Panel thickness swell (PTS) was found to be affected by several raw and fibre material characteristics (based on PLSR), in which PTS was lower in the case of good fibre quality. These results demonstrate the potential impact of variable raw material properties on product properties and processing conditions in an industrial environment.
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Eder, Michaela, Nasko Terziev, Geoffrey Daniel, and Ingo Burgert. "The effect of (induced) dislocations on the tensile properties of individual Norway spruce fibres." Holzforschung 62, no. 1 (January 1, 2008): 77–81. http://dx.doi.org/10.1515/hf.2008.011.

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Abstract Axial compressive stresses can cause distortion of the cellulose fibril alignment in the wood cell wall. These deformations are thought to occur in the living tree and/or to develop during wood processing and seem to adversely affect the mechanical properties of pulp and paper and other fibre-based products. To characterise the influence of dislocations on the mechanical properties of the unmodified cell wall, dislocations were artificially created by applying high compression loads to wood blocks parallel to the fibre axis. Mechanically isolated fibres containing different levels of dislocations were then subjected to tensile tests. Comparison between micromechanical properties of reference fibres and fibres that were artificially loaded in compression revealed the importance of dislocations for the mechanics of both earlywood and latewood. However, the tensile strength (decrease ∼19% for earlywood and ∼26% for latewood) was less affected than expected from structural observations of the pre-compressed zones.
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Dissertations / Theses on the topic "Wood fibre processing"

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Doroudiani, Saeed. "Microcellular wood-fibre thermoplastic composites, processing-structure-properties." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq41016.pdf.

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Johansson, Jimmy. "Mechanical processing for improved products made from Swedish hardwood." Doctoral thesis, Växjö : Växjö University Press, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-2457.

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Teuber, Laura [Verfasser], Holger [Akademischer Betreuer] [Gutachter] Militz, and Andreas [Gutachter] Krause. "Evaluation of particle and fibre degradation during processing of wood plastic composites (WPC) using dynamic image analysis / Laura Teuber. Betreuer: Holger Militz. Gutachter: Holger Militz ; Andreas Krause." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://d-nb.info/1111883483/34.

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Teuber, Laura Verfasser], Holger [Akademischer Betreuer] [Militz, and Andreas [Gutachter] Krause. "Evaluation of particle and fibre degradation during processing of wood plastic composites (WPC) using dynamic image analysis / Laura Teuber. Betreuer: Holger Militz. Gutachter: Holger Militz ; Andreas Krause." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://nbn-resolving.de/urn:nbn:de:gbv:7-11858/00-1735-0000-0028-87FD-D-2.

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Nordin, Lars-Olof. "Wood fiber composites : from processing and structure to mechanical performance." Doctoral thesis, Luleå : Univ, 2004. http://epubl.ltu.se/1402-1544/2004/09/.

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Anderson, Scott Powell. "Wood fiber reinforced bacterial biocomposites effects of interfacial modifers and processing on mechanical and physical properties /." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Thesis/Fall2007/S_Anderson_100507.pdf.

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Mertens, Oliver [Verfasser], and Andreas [Akademischer Betreuer] Krause. "Performance and processing evaluation of thermoplastic wood fiber composites / Oliver Mertens ; Betreuer: Andreas Krause." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2018. http://d-nb.info/1160675821/34.

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Axelsson, Maria. "Image analysis for volumetric characterisation of microstructure /." Uppsala : Centre for Image Analysis, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200919.pdf.

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Berková, Kristýna. "Processing, structure and properties of composites based on natural fillers and strereoregular polyolefins." Thesis, Clermont-Ferrand 2, 2013. http://www.theses.fr/2013CLF22386/document.

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Ce travail porte sur l’étude des composites à base de polypropylène et de farine de bois. Seuls des composites à base d’une matrice polypropylène et de fibres végétales ont été mis en oeuvre sans aucun recours à quelque agent comptabilisant que ce soit. En premier lieu nous avons regardé l’influence de la viscosité initiale de la matrice polypropylène sur la processabilité des biocomposites en utilisant des polymères de grades variés. Puis nous avons étudié l’influence de la nature et de la concentration de la farine en utilisant des farines de pin (bois mou) et de chêne (bois dur). Enfin, une attention spécifique a été portée sur la possibilité de nucléation en phase Beta de la matrice polypropylène en présence de fibres végétales. Des polypropylènes β-Nucléés ainsi que des farines ayant subies des extractions par des solvants de leurs composés volatils ont été utilisées. Les mélanges obtenus ont été testés au moyen de la viscoélasticité à l’état fondu pour mettre en évidences les effets d’interaction charges-Matrices et par des mesures de diffraction aux rayons X ainsi que d’analyse thermique différentielle pour la caractérisation de leurs morphologies cristallines
This doctoral thesis is focused on composites based on polypropylene and wood flour. Firstly, the experimental work deals with preparation of composites based on wood flour with various concentrations and isotactic polypropylene with various melt flow indexes. In terms of this study, one polypropylene, which can have also practical use, was chosen. Further, this polypropylene is investigated with various types and concentrations of wood flour. Also, the attention is devoted to the modification of polypropylene by a specific β-Nucleating agent. The differences are compared and described between the composites with neat and nucleated polypropylene. Further, the work is focused on solvent extraction of wood flour. The effect of extraction and solvent of wood flour is also examined in composites with neat and nucleated polypropylene. On prepared composites, the rheological, structural and thermal properties are studied. These properties differ depending on specific type of wood flour, its concentration and specific type of polypropylene
Předložená doktorská práce je zaměřena na kompozity polypropylenu a dřevní moučky. V experimentální části práce jsou připraveny kompozity s různými koncentracemi plniva a izotaktických polypropylenů s různými indexy toku taveniny. Na základě této studie je vybrán jeden konkrétní polypropylen, který může mít v kombinaci s dřevní moučkou i praktické využití. Tento polypropylen je dále zkoumán s různými druhy a koncentracemi dřevní moučky. Pozornost je také kladena na úpravu vlastností izotaktického polypropylenu užitím specifického β-nukleačního činidla. Jsou porovnávány a popisovány rozdíly mezi kompozity s čistým a nukleovaným polypropylenem. Práce se dále zabývá extrakcí dřevní moučky v rozpouštědle. Je studován vliv extrakce a rozpouštědla dřevní moučky na vlastnosti připravených kompozitů. Byly studovány reologické, strukturální a tepelné vlastnosti, které se lišily v závislosti na zvoleném typu plniva, jeho koncentraci a typu polymerní matrice
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Vach, Tomáš. "Návrh a výpočet sušicího zařízení pro dřevozpracující průmysl." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228021.

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The thesis considers a stabilization of temperature of a wood fiber during production of medium close fibre boards MDF in a wood-processing industry. The original purpose to solve energetic optimalization of a kiln dryer has become a serious problem. It turned out that production suffers with a big heat loss which results in big heat loss gained during a kiln drying. Primary aim of this thesis is an examination of a cooling effect of environment on chosen parts of a production line and suggestion of acceptable proceeding to minimize heat loss and to rise temperature of the wood fiber to required temperature. Solution is aimed on the section of a production line between drying equipment and press. First part of the thesis introduces technology of production of fibre boards, introduction to heat transfer problems and also basics of computer modeling of heat flow and transfer using CFD simulation. The next part includes an evaluation of the heat loss of chosen parts of the production line in a current working condition and its comparison with computer simulations. Verification of accuracy of the results while using both approaches to solution is a first step to the improvement of the current situation. It is possible to use the verified calculation model for the following solution of effects on convective and radiation heating of a wood fiber layer. An important factor in the last period of a calculation is a real temperature of the fiber board-mat at the entrance to a press. The higher entering temperature in a set temperature range is reached, the lower time needed for pressing will be and simultaneously the whole industrial process will be cut short. The solution of a problem leads to an achievement of an energy saving and should become a solid basis from which it would be possible to evaluate an improvement of production of MDF boards. The conclusion of the thesis includes an analysis of findings which refers to a heating of wood fiber and it’s effectiveness for a practical use.
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Books on the topic "Wood fibre processing"

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Association, National Fire Protection. Prevention of fires and explosions in wood processing and woodworking facilities. Quincy, MA: National Fire Protection Association, 1993.

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Garman, Janet. Good Living Guide to Keeping Sheep and Other Fiber Animals: Housing, Feeding, Shearing, Spinning, Dyeing, and More. New York, USA: Good Books, 2019.

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Doroudiani, Saeed. Microcellular wood-fibre thermoplastic composites: Processing-structure-properties. 1999.

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Karl-Erik, Eriksson, Cavaco-Paulo Artur, and ACS Symposium Enzyme Applications in Fiber Processing (1997 : San Francisco, Calif.), eds. Enzyme applications in fiber processing. Washington, DC: American Chemical Society, 1998.

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The Measurement Of Wool Fibre Properties And Their Effect On Worsted Processing Performance And Product Quality. CRC Press, 2011.

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Botha, Anton F. Measurement of Wool Fibre Properties and Their Effect on Worsted Processing Performance and Product Quality : Part 1: The Objective Measurement of Wool Fibre Properties. Taylor & Francis Group, 2020.

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Botha, Anton F. Measurement of Wool Fibre Properties and Their Effect on Worsted Processing Performance and Product Quality : Part 1: The Objective Measurement of Wool Fibre Properties. Taylor & Francis Group, 2020.

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Botha, Anton F. Measurement of Wool Fibre Properties and Their Effect on Worsted Processing Performance and Product Quality : Part 1: The Objective Measurement of Wool Fibre Properties. Taylor & Francis Group, 2020.

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Botha, Anton F. Measurement of Wool Fibre Properties and Their Effect on Worsted Processing Performance and Product Quality : Part 1: The Objective Measurement of Wool Fibre Properties. Taylor & Francis Group, 2020.

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Rizvi, Ghaus Muhammad. Development of extrusion processing technology for manufacture of fine-celled plastic/wood-fiber composite foams. 2003.

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Book chapters on the topic "Wood fibre processing"

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Beg, M. D. H., and K. L. Pickering. "The Effects of Residual Lignin Content on Wood Fibre Reinforced Polypropylene Composites." In Advanced Materials and Processing IV, 323–26. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-466-9.323.

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Robledo-Ortíz, Jorge R., Francisco J. Fuentes-Talavera, Rubén González-Núñez, and José A. Silva-Guzmán. "Wood and Natural Fiber-Based Composites (NFCs)." In Handbook of Polymer Synthesis, Characterization, and Processing, 493–503. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118480793.ch26.

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Doroudiani, Saeed, Mark T. Kortschot, and Charles E. Chaffey. "Microcellular Wood-Fiber Thermoplastics Composites: Processing-Structure-Properties." In Design and Manufacturing of Composites, 400–407. New York: CRC Press, 2021. http://dx.doi.org/10.1201/9781003076131-73.

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Oksman, K., and M. Bengtsson. "Wood Fiber Thermoplastic Composites: Processing, Properties, and Future Developments." In Handbook of Engineering Biopolymers, 655–71. München: Carl Hanser Verlag GmbH & Co. KG, 2007. http://dx.doi.org/10.3139/9783446442504.021.

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Wernersson, Erik L. G., Anders Brun, and Cris L. Luengo Hendriks. "Segmentation of Wood Fibres in 3D CT Images Using Graph Cuts." In Image Analysis and Processing – ICIAP 2009, 92–102. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-04146-4_12.

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Salmén, L., and S. Ljunggren. "Physicochemical aspects of fibre processing." In The Chemistry and Processing of Wood and Plant Fibrous Material, 173–81. Elsevier, 1996. http://dx.doi.org/10.1533/9781845698690.173.

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Reubmann, T., V. Sperber, A. Bledzki, R. Lutzendorf, M. Murr, and A. Jaszkiewicz. "Processing techniques for natural- and wood-fibre composites." In Properties and Performance of Natural-Fibre Composites. CRC Press, 2008. http://dx.doi.org/10.1201/9781439832141.ch4.

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BLEDZKI, A. K., A. JASZKIEWICZ, M. MURR, V. E. SPERBER, R. LÜTZENDGRF, and T. REUßMANN. "Processing techniques for natural- and wood-fibre composites." In Properties and Performance of Natural-Fibre Composites, 163–92. Elsevier, 2008. http://dx.doi.org/10.1533/9781845694593.1.163.

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Dai, D., and M. Fan. "Wood fibres as reinforcements in natural fibre composites: structure, properties, processing and applications." In Natural Fibre Composites, 3–65. Elsevier, 2014. http://dx.doi.org/10.1533/9780857099228.1.3.

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Cooper, R. J. "Changing patterns of global wood and fibre supplies." In The Chemistry and Processing of Wood and Plant Fibrous Material, 13–24. Elsevier, 1996. http://dx.doi.org/10.1533/9781845698690.13.

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Conference papers on the topic "Wood fibre processing"

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Wernersson, Erik L. G., Cris L. Luengo Hendriks, and Anders Brun. "Generating synthetic μCT images of wood fibre materials." In 2009 6th International Symposium on Image and Signal Processing and Analysis. IEEE, 2009. http://dx.doi.org/10.1109/ispa.2009.5297698.

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Tissandier, C., Y. Zhang, and D. Rodrigue. "Effect of fibre and coupling agent contents on water absorption and flexural modulus of wood fibre polyethylene composites." In PROCEEDINGS OF PPS-29: The 29th International Conference of the Polymer Processing Society - Conference Papers. American Institute of Physics, 2014. http://dx.doi.org/10.1063/1.4873810.

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Hernandez-Castaneda, Juan Carlos, Huseyin Kursad Sezer, and Lin Li. "The effect of moisture content and tracheids orientation in fibre laser cutting of dry and wet pine wood." In ICALEO® 2009: 28th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Laser Institute of America, 2009. http://dx.doi.org/10.2351/1.5061507.

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Rizvi, Ghaus M., and Chul B. Park. "A Novel Design for Producing Fine-Celled Foams of Plastic/Wood-Fiber Composites." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1952.

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Abstract This paper presents an innovative system design for production of plastic/wood-fiber composite foams based on a chemical blowing agent (CBA). Wood-fiber inherently contains moisture, which adversely affects the foam processing and the resultant cell morphology. To improve the cell morphology, the moisture content in the final foam should be minimized. A novel system design is presented for achieving this goal. Undried wood-fibers were processed together with HDPE, CBA and a coupling agent (CA) in a tandem extrusion system. At the interconnection of the two extruders, a vent was provided to purge the moisture into the atmosphere. HDPE/wood-fiber composite foams were produced on this system and on a single extruder without the vent, for comparison. The cellular morphology and volume expansion ratios of the foamed composites were characterized. The foams produced on the newly developed tandem system exhibited significantly improved cell morphology and surface quality.
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Zyryanov, Mihail, Semenenko E. Semenenko E.A., and V. Surnichev. "INVESTIGATION OF THE INFLUENCE OF NATURAL AND CLIMATIC CONDITIONS ON THE OPERATION OF MOBILE WOOD PROCESSING EQUIPMENT." In Ecological and resource-saving technologies in science and technology. FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov, 2022. http://dx.doi.org/10.34220/erstst2021_87-92.

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. In the course of the work, in order to study the influence of natural and climatic conditions on the process of wood processing equipment, a 3D model of a grinding installation was made in the SolidWorks software. The trajectories of movement of wood particles in the working area of the machine are investigated and diagrams of the influence of the temperature regime on the geometric characteristics of the knives of the rotor and stator of the mobile grinding machine are constructed. The forecast of the quality characteristics of the obtained wood-fiber semi-finished product is carried out and recommendations for the temperature conditions of the equipment operation are developed.
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Storodubtseva, Tamara, A. Buryakova, and A. Rabotkin. "ENERGY SAVING OF WOOD DUE TO ITS MODIFICATION." In Modern machines, equipment and IT solutions for industrial complex: theory and practice. FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov, 2021. http://dx.doi.org/10.34220/mmeitsic2021_340-344.

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Modified wood is wood that is improved with special modifiers in order to increase its strength, durability and water-, bio-, fire- and corrosion resistance, which, unlike natural wood, makes it more resistant to various environmental factors. This wood is good to use in construction, and it will be effective for further development, as the buildings will be used longer, and less likely to be subject to repair and reconstruction, which will reduce deforestation. The most popular methods of modification are thermomechanical modification with preliminary steaming of wood, its heating, or with preliminary impregnation with mineral oils; thermochemical modification; chemical modification; radiation-chemical modification. Each type of the above modifications differs in its properties, and also have their own impact on a particular type of wood. The most common and most effective method of modification is achieved by thermomechanical processing. Since it is when the wood is heated, after the introduction of the necessary modifiers into it, the polymers begin to heat up, due to which the vessels of the wood harden, which affects its density. To avoid the destruction of wood, it is very important to monitor the temperature and prevent it from reaching high heating levels.
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Romero-Balderrama, L., M. E. Mendoza-Duarte, A. Gaspar-Rosas, S. G. Flores-Gallardo, R. Ibarra-Gómez, Albert Co, Gary L. Leal, Ralph H. Colby, and A. Jeffrey Giacomin. "Composites of Polystyrene∕Wood Fiber, Processing Effect to Creep Resistance." In THE XV INTERNATIONAL CONGRESS ON RHEOLOGY: The Society of Rheology 80th Annual Meeting. AIP, 2008. http://dx.doi.org/10.1063/1.2964573.

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Chirkov, I., Ekaterina Kantieva, and Larisa Ponomarenko. "OVERVIEW OF GLUED WOOD BUILDING MATERIALS." In Modern machines, equipment and IT solutions for industrial complex: theory and practice. FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov, 2021. http://dx.doi.org/10.34220/mmeitsic2021_379-385.

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Currently, environmental friendliness is one of the main requirements for products of any kind all over the world. The use of wood as a building material fully meets this requirement. Every year the share of wooden housing construction increases, and not only in the segment of low-rise, but also multi-storey wooden houses and structures. When working with a tree, it is necessary to take into account its features and disadvantages. When the humidity changes, the wood changes its size, is affected by fungi and insects, and has a high fire hazard class. In order to improve the performance properties of wood, its modification is widely used, through the use of various processing methods: drying, heat treatment, impregnation with various compositions, gluing. Recently, a large number of innovative construction materials based on wood bonding have appeared on the market: LVL-beams, CLT-panels, glued beams, wooden I-beams. The use of these materials from glued wood in construction allows the use of renewable, eco-friendly raw materials. And despite the higher cost of these materials compared to traditional building materials, they are competitive in their properties: light weight, less load on the foundation, are not subject to corrosion, are easily installed even in areas with difficult engineering and geological conditions, when exposed to fire, they retain their structural strength longer, are easily transported and disposed of.
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Rudolf, Maja, Irena Bates, Ivana Plazonić, Valentina Radić Seleš, Katja Petric Maretić, and Marija Magdalena Mendeš. "Evaluation of the line and edge quality of printed letters on recycled paper with straw pulp." In 11th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design, 2022. http://dx.doi.org/10.24867/grid-2022-p33.

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Traditional papermaking is based on the use of an aqueous suspension consisting of cellulose fibres obtained by processing wood, non-wood plants or waste paper. With growing environmental concerns regarding deforestation and CO2 production, the paper industry has been always looking for new sources of non-wood pulp that would produce papers of similar quality to those made from wood pulp. Cereal straw from wheat, barley or triticale crops that remains on fields as a residue after grain harvesting has proven to be a good substitute for virgin wood fibres needed in the production of recycled paper. In this study, the quality of printed text on recycled paper with added straw pulp is evaluated mainly based on the line and edge characteristics of the printed letters. For this purpose, three types of laboratory paper substrates were first prepared using recycled wood pulp with the addition of 30% wheat, barley, or triticale straw pulp. The same letter pattern was printed with black ink on each paper substrate at a standard size of 12 pt with two common typefaces: Arial and Times New Roman. The quality of the printed letters was assessed through the measured print quality parameters such as blurriness, raggedness, fill and contrast. The resulting measurements were compared with the results obtained on the reference and control samples made exclusively from recycled wood pulp as a substrate from laboratory and commercial production. In terms of fill and contrast values, the uniformity of lines printed on the recycled papers with added straw pulp is the same or very similar to the reference and control papers. Letters printed in Arial (sans-serif) typeface show slightly better reproduction quality than letters printed in Times New Roman (serif) typeface. The measured parameters blurriness and raggedness of all laboratory-made paper substrates (with and without straw pulp) had similar values between 0.17 mm and 0.20 mm, resulting in a very similar reproduction quality compared to the reference paper substrate.
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Ramani, Karthik, Michael Smith, and Heming Dai. "In-Situ Continuous Process for Bonding Glass-Fiber Reinforced Polypropylene to Wood." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-1202.

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Abstract Process conditions are developed for the manufacture of composite reinforcement for oak. Commingled glass and polypropylene fibers are consolidated in-situ on the surface of oak. Processing times from 30 to 120 seconds and pressures from .34 MPa to 1.4 MPa are tested. Micrographs of the composite and bond line reveal anisotropic fiber distribution in the composite, dry reinforcing fibers, voids, and incomplete consolidation. These microstructures are correlated with the processing problems which cause them, including insufficient heating time, poor matrix/glass mixing, and insufficient pressure to suppress void development. Lap shear strength and failure modes are related to microstructural features.
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