Wood-plastic coated solid wood composite material and preparation method thereof

Abstract

The invention discloses a wood-plastic coated solid wood composite material and a preparation method thereof and aims at solving the problems in the prior art that the combination of a wood-plastic composite material and a solid wood material is poor in firmness, the end of a sectional material is unclosed, the wood-plastic composite material is prone to creep deformation and low in tenacity, and the solid wood material is prone to decaying, hygroscopic deformation and cracking. The wood-plastic coated solid wood composite material is made by wrapping a solid wood core with a wood-plastic composite material. The method comprises the following steps: firstly, processing a groove in the side of solid wood to obtain the solid wood core; secondly, coating the surface of the solid wood core with the wood-plastic composite material through a co-extrusion method and filling the side groove with the wood-plastic composite material to obtain a wood-plastic coated solid wood composite sectional material; and thirdly, sealing the wood-plastic coated solid wood composite sectional material by virtue of the wood-plastic composite material to obtain the wood-plastic coated solid wood composite material. The wood-plastic coated solid wood composite material disclosed by the invention is used for manufacturing a door or window and furniture, and also can be used as a bearing structure material.

Description

technical field [0001] The invention relates to a wood-plastic clad solid wood composite material and a preparation method thereof. Background technique [0002] Wood-plastic composite materials are produced by using plastic and wood processing residues, straw and other wood fiber materials as the main raw materials. However, there are disadvantages such as low toughness and easy creep, which limit its application in the field of load-bearing structural materials. Fast-growing plantation wood is a sustainable material with large elastic modulus, high strength-to-weight ratio, and excellent impact resistance. Combining the advantages of wood-plastic composite material and plantation wood, making use of advantages and avoiding disadvantages, preparing wood-plastic composite material can effectively improve the comprehensive performance of the material. However, the low polarity of wood-plastic composites makes it difficult to form a good interfacial bond with high-polarity s...

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Problems solved by technology

[0003] The present invention aims to solve the problems of poor firmness of the combination of wood-plastic composite material and solid wood material in the prior art and the unsealed end of the profile, and further solve the problems that wood-plastic composite material is easy to creep, low toughness, and solid wood material is easy to rot and deform due to moisture absorption. , easy cracking problems, thereby providing a wood-plastic coated solid wood composite material and its preparation method

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