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Chemical methods for the treatment of wood flour

One of the key technologies of wood-plastic composites is the treatment of wood powder. There are many factors that affect the filling of wood powder with plastic, such as the filling amount of wood powder, particle size of wood powder, water content of wood powder, properties of matrix plastic, phase The type of container, processing technology, etc. The chemical method is to reduce the number of hydroxyl groups on the surface of wood fibers through chemical reactions, and establish physical and chemical cross-links between wood flour/polymer. By forming a hydrophobic film on the surface of the wood powder, the compatibility with the polymer and the dispersion of the wood powder are improved. At present, the commonly used methods include the lubricant method, the coupling agent method, and the compatibilizer method.

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