Application and performance of acrylate copolymer compatibilizer in wood-plastics composites

In this paper, the acrylate and the double band silane were copolymerized by radical polymerization methods to prepare the compatibilizer in wood-plastic composites(WPC). Mechanical properties of the composites were tested, such as tensile properties by universal material testing machine and impact property by impacting testing machine. The result showed that the mechanical properties of the composites would be better when the compatibilizer was added in WPC, the compatibilizer molecule could not only bond with the plant fiber, but also be compatible with plastic. The GMA monomer was introduced in the copolymer, the epoxy groups in GMA could be opened loop by the amino groups in silane or the hydroxyl group in the fiber, and the cross-linking structure and the stable microcosmic dispersions system was formed between the plant fiber, compatibilizer and the plastic. The compatibilizer reduced fiber polarity, increased dispersion and compatibility with the plastics. The tensile strength was 16.5 MPa and the impact strength of WPC was 19.1 KJ/m2.