A kind of plastic-wood composite board and preparation method thereof

Abstract

The invention discloses a plastic-wood composite board and a preparation method thereof. The plastic-wood composite board comprises substances in percentage by mass as follows: 5%-35% of wood fibers, 25%-55% of a plastic base body, 15%-45% of a phase-change material, 2%-10% of a flexibilizer, 0.2%-1% of a dispersing agent and 0.2%-1% of a lubricating agent. The preparation method of the plastic-wood composite board comprises steps as follows: weighing and mixing the substances to obtain a premix, injecting melt into a continuous press provided with two steel belts via a connector through an extrusion feeder provided with a planetary screw, and finishing the integrated cooling, molding and conveying process. According to the method, the phase-change material is added into the plastic-wood composite board to realize a temperature adjusting function, the phase-change material is evenly dispersed in the composite board, and the change of the indoor temperature is absorbed by a floor, so that the indoor temperature is adjusted; a method that the planetary screw extrusion feeder and the continuous press are combined is adopted, so that straw powder granules in the board are mixed and distributed more uniformly, meanwhile, cooling, molding and conveying integrated production of the plastic-wood composite board is realized, and the annual output of the plastic-wood composite boards can be increased substantially.

Description

technical field [0001] The invention relates to a wood-plastic composite board and a preparation method thereof, belonging to the field of processing and molding of polymer materials. Background technique [0002] With the development of society, people's requirements for the quality of life are constantly improving, and the requirements for the comfort and air purity of the environment are also higher. However, the decorative panels, floors, wall panels and other panels used in many home decorations can no longer satisfy people. For the requirements of green environmental protection, it is expensive to use solid wood boards, which wastes forest resources. If high-performance wood-plastic composite board is used, it is not only cheap, but also ecologically friendly, water-resistant and anti-corrosion, intelligent temperature adjustment, and easy to process like wood. [0003] Existing methods for preparing wood-plastic composite panels generally include hot pressing, inject...

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Problems solved by technology

[0004] The present invention aims to provide a wood-plastic composite board and a preparation method thereof, adopts a new formula and a new preparation method, increases the temperature adjustment function of the wood-plastic composite board, and solves the problems of low extrusion molding strength and compression molding time of the plastic-wood composite board. Long, low efficiency and high equipment investment, etc., to realize the automatic assembly line production of plastic-wood composite panels

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