Abstract
WPCs are wood plastic composites materials. Currently most of WPCs are manufactured by extrude technology. In order to enhance the production efficiency, a new manufacture technology called hot press molding (HPM) has been developed. The remarkable advantages of the so-called HPM WPCs are that large dimension board from 600mm×600mm×3mm to 3500mm×3500mm ×60mm can be multi-moulded in one time. In this paper, the HPM WPCs’ process mechanism and technology is introduced, and the physical and mechanical behavior of the HPM WPCs board is tested and studied. Test and research have shown that the physical and mechanical property of HPM WPCs is good. It is an idea substitute material of timber. The water absorption of HPM WPCs is only 10.3%, the moisture dilation is only 1.10%, the dimensional changes after heated is 2.31%, etc. , physical behavior is better than that of normal timber. Besides that, the mechanical behavior is better than that of timber as well. The ultimate bending strength can reach 14.1MPa, the ultimate compression strength can reach 31.3MPa, and the compression modulus is 3618MPa.
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