Some Technological Properties of Wood-Plastic Materials

摘要

Some technological properties of wood-plastic materials are presented. The materials consist of combinations of beech and pine with polymethyl methacrylate, polyvinyl acetate and poly(styrene/acrylonitrile). The properties investigated comprise machining and glueing properties, bending strength, hardness, water absorption, and dimensional stability as well as density and distribution of polymer in large wood samples. It is concluded that impregation with polymethyl methacrylate leads to improved bending strength, hardness and dimensional stability, but poorer machining and glueing properties; poly(styrene/acrylonitrile) increases the hardness, substantially improves the dimensional stability and gives no great difficulties in machining and glueing; polyvinyl acetate seems to give no improvements of any appreciable interest. (Author)