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Wood fiber reinforced thermoplastic composites

in News & Ankündigungen 06.06.2017 04:13
von qizhen111 • 72 Beiträge | 144 Punkte

Wood-plastic composites (WPC) is a kind of new material obtained by using the method of wood fiber or plant fiber as reinforcing material, using thermoplastic as matrix material, wood-plastic composite material with wood It has been widely used in the fields of automobile industry, construction industry, transportation industry and aviation industry. It has been widely used in the fields of automobile industry, construction industry, transportation industry, aviation industry and so on. At present, wood-plastic composite materials are more than 15% annual rate of development, the market prospects are very broad.
The interface compatibility has always been a hot topic in the study of wood-plastic composites. Wood fiber, which is a reinforcing material, is composed of cellulose, hemicellulose and lignin. Cellulose and hemicellulose are polysaccharide macromolecules whose surface contains A large number of alcoholic hydroxyl groups, the surface has a strong polarity and water absorption, lignin is composed of phenylpropane as a unit by condensation of benzene ring, oxygen and phenolic hydroxyl highly crosslinked macromolecules, the use of thermoplastic polymer is mainly poly Ethylene, polypropylene, polyvinyl chloride, polystyrene, etc., the surface of these polymers are generally non-polar or very small polarity.
Thus, the surface of the hydrophilic, strongly polar wood fiber has a good compatibility with the hydrophobic non-polar plastic substrate interface, so that the surface layer of the wood fiber and the surface layer of the plastic substrate reach the molecular level Of the integration of these two different nature of the material organically together to form a single material than the original performance of a more excellent new composite materials.
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