Дисертації з теми "Latex Film Formation"
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Nilsson, Kristian. "Film formation of latex in dry coating films." Thesis, Karlstad University, Faculty of Technology and Science, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-1048.
Повний текст джерелаThe objective of this master thesis was to investigate the possibility to measure the gain in stiffness of the dry coating due to film formation of latex with a Dynamic Mechanic Thermal Analyzer (DMTA). This could tell when and to which extent the latex forms a film after the drying process.
Two latices with different Tg was used for the experiments, one with a Tg of 36°C, denoted hard, and the one with a Tg of 8°C, denoted soft. The hard latex was used to make coating samples that would not form a film when dried at room temperature and the soft latex was used as a reference to the coating with hard latex since it would form a film at room temperature.
It was shown that a gain in stiffness due to film formation of latex in coating can be measured with a DMTA. It was also shown that that the film forming of latex in coatings depend on time, temperature and the history of the sample. Further investigations were carried out to try to determine the time for film formation to be completed at a certain temperature.. These investigations showed that this type of trials cannot be carried out in a DMTA directly since the stiffness seemed to increase monotonically during a very ling time. This might be due to the rearrangements in the pigment structure that might affect the gain in stiffness. Therefore, a method involving oven curing was developed. Only one series of test were performed with this method due to lack of time but the method showed promising results.
Syftet med detta examensarbete var att undersöka möjligheten att använda en Dynamic Mechanic Thermal Analyzer (DMTA) för att mäta ökningen av styvhet som följd av filmbildning av latex i en torr bestrykning.
Två olika latexer användes för experimenten, en med Tg = 36°C (hård) och en med Tg = 8°C (mjuk). Den hårda latexen användes för att kunna göra tester på prover som ännu inte filmbildat när de torkat vid rumstemperatur och den mjuka latexen användes för att göra referens prover mot bestrykningen med hård latex.
Resultaten visade att det går att mäta styvhetsökning i bestrykningen som en följd av filmformation med DMTA och filmformation av latex i bestrykningen troligtvis beror på både tid, temperatur och provets historia. Ett försök att mäta vilken uppehålls tid vid en specifik temperatur som krävs för att filmbildningen skall fulländas genomfördes. Dessa försök visade att DMTA:n inte var en lämplig metod för att mäta denna tid då styvheten verkade öka under en längre tid. Detta kan bero på att pigment partiklarna packade sig tätare och på så sätt orsakade en ökning av styvheten. Därför gjordes ett annat försök som involverar ugns härdning, men på grund av tidsbrist blev det bara en mätserie utförd. Den sist nämnda metoden visade dock goda resultat och måste därför bedömas ha en potential.
Weerakkody, Tecla G. "Physical characterisation of latex film formation and film properties." Thesis, University of Surrey, 2009. http://epubs.surrey.ac.uk/843739/.
Повний текст джерелаTzitzinou, Aikaterini. "Physical characterisation of acrylic latex film formation." Thesis, University of Surrey, 1999. http://epubs.surrey.ac.uk/2115/.
Повний текст джерелаFeng, Jianrong. "Molecular and environmental aspects of latex film formation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0008/NQ28278.pdf.
Повний текст джерелаOdrobina, Ewa. "Various aspects of latex film formation in the presence of additives." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0020/NQ53679.pdf.
Повний текст джерелаPaakkonen, Johan. "Surfactants in anionic latex films." Thesis, Karlstads Universitet, Avdelningen för kemi och biomedicinsk vetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-6389.
Повний текст джерелаKessel, Nicola. "Physical and Chemical Aspects of the Film Formation of Self-Crosslinking Acrylic Latex Coatings." Thesis, University of Surrey, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486089.
Повний текст джерелаDelafresnaye, Laura. "Élaboration de latex nanocomposites polymère/argile pour la formation de films barrière à l'oxygène et à la vapeur d'eau." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10349.
Повний текст джерелаCarlsson, Gunilla. "Latex Colloid Dynamics in Complex Dispersions : Fluorescence Microscopy Applied to Coating Color Model Systems." Doctoral thesis, Karlstads universitet, Institutionen för kemi, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-2621.
Повний текст джерелаGuillaume, Jean-Luc. "Synthèse de colloïdes modèles par polymérisation en émulsion de styrène et d'acrylate de n-butyle : leur utilisation dans des études de rhéologie et de formation de film." Lyon 1, 1985. http://www.theses.fr/1985LYO10042.
Повний текст джерелаDomingues, Dos Santos Fabrice. "Films de latex structures : formation, deformation et rupture." Paris 6, 1999. http://www.theses.fr/1999PA066560.
Повний текст джерелаDivry, Véronique. "Mécanismes de formation et relations structure/propriétés de films minces à matrice polymère issus de colloïdes aqueux à séchage rapide." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAE001/document.
Повний текст джерелаAqueous paints are made of colloidal suspensions of polymer in water (latex) and additives (mainly pigments and fillers). Latex film formation consists of complex and interdependent phenomena. In case of specific applications, such as road marking, formulated latex must dry fast without excessive supply of energy. However, once dry, the film must be as less porous as possible, with good mechanical properties. The aim of this thesis was to identify the drying key parameters and to understand their influence on the rheology, the drying mechanisms of formulated latex and the mechanical properties of the dried films. The final goal was to have a better understanding of formulated latex drying in order to improve the formulations. After identification of the drying key parameters, latexes have been synthetized and formulated with specific additives. The influence of the following drying key parameters: nature of polymer, size and size distribution of particles, addition of coalescing aid, co-solvent, dispersing and thickening agent, pigments and cross linker, was studied regarding the formulation drying and the dried films mechanical properties. The drying studies focused on the global drying rate of the formulations, the particles deformation mechanisms and the horizontal and vertical drying mechanisms observed in latexes. The particles horizontal convection rate has been measured with multiple light scattering. Comparisons have been made with theoretical models. Dried films mechanical properties have been compared with dynamic mechanical analysis and tribology
Tang, Jiansheng. "Film formation from latex blends /." Diss., 2000. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:9995541.
Повний текст джерелаBoyars, Brian. "Film formation from reactive latexes /." Diss., 2004. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3154554.
Повний текст джерелаMohd, Ghazaly Hafsah. "The effect of crosslinking on latex film formation /." Diss., 1999. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:9955166.
Повний текст джерелаDing, Tianhua. "Some aspects of film formation from pigmented latex systems /." Diss., 2003. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3117147.
Повний текст джерелаKim, Sung Dug. "Effect of ionic end groups on diffusion and film formation in polystyrene latexes /." Diss., 1999. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:9955154.
Повний текст джерела蕭淑娟. "The formation of Langmuir-Blodgett film of polystyrene latex particle." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/74067002463986807878.
Повний текст джерелаAl-Ghamdi, Ghurmallah H. "Encapsulation of inorganic particles via miniemulsification and film formation of resulting composite latex particles /." Diss., 2003. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3086929.
Повний текст джерелаSoleimani, Kheibari Mohsen. "Film Formation of Water-borne Polymer Dispersion: Designed Polymer Diffusion for High Performance Low VOC Emission Coatings." Thesis, 2012. http://hdl.handle.net/1807/32896.
Повний текст джерелаOh, Jung Kwon. "Synthesis and characterization of dye-labeled poly(vinyl acetate-butyl acrylate) latex particles and their application to film formation and polymer interdiffusion." 2004. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=80266&T=F.
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