Some exploitation properties of wood plastic composites based on polypropylene and birch plywood sanding dust; pp. 117a??123

摘要

Numerous researchers are closely connected with the production and studies of partially green biocomposites. Various polymer matrices, mainly polyolefines and natural fibres as reinforcement and their combinations, are used. Some scientists use various by-products of the timber industry in preparing wood plastic composites (WPCs). Our work is focused on the investigation of exploitation properties (tensile and flexural strength and modulus, impact strength, microhardness, and water uptake) of the WPCs based on the birch plywood production by-product sanding dust (PSD) and the polypropylene (PP) matrix. Sufficiently good fluidity of the composite melts was noted. To clarify the composites fracture mechanism SEM studies were used. For modifying the WPCs maleated polypropylene (MAPP) was used as the coupling agent. It was shown that the additions of PSD and MAPP had a positive influence on the exploitation properties of WPCs based on a PP.