Development of effective compositions of composite wood-plastic board materials based on local raw materials and industrial waste

Abstract

The article presents the results of research aimed at creating of effective compositions of composite wood-plastic board materials based on fillers from cotton stalks and polymer binders. IIt was found that for all the considered plates with a density of 600, 700 and 800 kg/m3, the maximum value of the bending strength of composite wood-plastic materials (14.8–22.9 MPa) is observed when the content of small particles of the crushed mass of cotton stems is from 10 to 20%, and the maximum value of the tensile strength perpendicular to the plate layer (0.58–0.91 MPa) – at the content of a fine fraction from 15 to 25%. The minimum water absorption of plates at three densities of 650, 750 and 850 kg / cm3 was recorded with a fine fraction content of 15–18% in the mass. It was revealed that the high value of the ultimate strength in static bending of composite wood-plastic materials with a density of 650, 750 and 850 kg/cm 3 with a content of the fibrous part of cotton 20- 60% is in the range of 14- 15,5 MPa, 17,5- 19,1 MPa and 20- 22,2 MPa, respectively. The least water absorption and swelling of the slabs is observed when the content of the fibrous part is in the range of 30- 40%.