Use of Low-Grade Vegetable Raw Materials in Production of Composites by Preliminary Processing

Abstract

Intensive cutting down of trees to replenish the reserves of business wood exhausts wood stocks in traditional logging areas, leads to the decrease in the areas of forest plantings.\, and ecological disruption. Now there are real opportunities to reduce the consumption of traditional forest resources thanks to fuller use of forest products, low-grade wood, and waste of sawmilling and a woodworking for the production of composite materials. In this regard the results of the research on the possibility to use low-grade wood for production of composite materials are given in this work. At the same time a natural filler is subjected to preliminary high-frequency plasma processing. It is established that this type of processing of wood raw materials leads to improvement of its separate properties: wettability of material and adhesion to cement knitting increases. At the same time the increase in wettability of wood samples is directly proportional to the capacity and duration of high-frequency plasma processing. It is proved that preliminary modification of wood filler during production of cement wood results in the increase in its durability during operation in dry conditions.