Present study examined the improvement of compatibility of the polymer matrix and filler in wood-plastic composites (WPC). Questions of application of cardanol grafted high-density polyethylene (HDPE) were considered. WPC samples were obtained with pine wood flour and different cardanol contents in the polymer matrix. Hardness, strength, elastic modulus, impact strength, elongation at break and water absorption of these samples were measured. Analysis of the properties of obtained WPC showed that the graft of cardanol to HDPE leads to significant increase in the melt flow index of wood-polymer mixture and a sharp reduction in water absorption of the composite. It also leads to increase in index of elongation at break with a slight fall of tensile strength. The presence of 20 wt%. cardanol in the polymer matrix of the composite leads to increase of the indicators of impact strength and notched impact strength is more than 2 times. At the same time, the presence cardanol in the WPC reduces the hardness and elastic modulus of the composites.
древесно-полимерные композиты, полиэтилен, карданол, физико-механические свойства, wood plastic composites, polyethylene, cardanol, physicomechanical properties
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