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.

Influence of the matrix type on the physical and mechanical parameters of the WPC

“…Traditional synthetic polymers and composites based on them, in particular, polyethylene, despite the successful combination of production technology, the possibility of varying physical and mechanical characteristics and prices, create significant problems for ecology and the environment. An analysis of the scientific literature indicates that the solution to this problem is seen in the use of biopolymers or their combination with environmentally friendly fillers [1][2][3][4][5].…”

Improving the Physical and Mechanical Performance of Laminated Wooden Structures by Low-Temperature Plasma Treatment

“…In addition, a number of wood species have poor adhesion to some adhesives, which is also a significant disadvantage, since this characteristic is important in the production of large-span laminated wooden structures, where the quality of the adhesive layer plays an important role. As a result of all of the above, it can be concluded that increasing the physical and mechanical qualities of lowgrade wood and increasing its adhesive qualities should be considered among the main issues to be addressed in the construction industry [1][2][3][4].…”

Studying the Performance of Composites Based on Thermally Modified and UV-Treated Wood

“…Currently, structures made of wood composites are gaining in more popularity in the construction industry [1][2][3][4]. Composites are widely used in construction due to the advantages of the cast-in-place composition obtained.…”