Preparation method of wood plastic material

Abstract

The invention discloses a preparation method of wood plastic material, which comprises the following raw materials according to parts by weight: 100 parts of thermoplastic plastic, 20-50 parts of wood powder or vegetable fibre, 0.4-0.9 part of silane or aluminate coupling agent, 4-15 parts of ethylene-vinylacetate and 0.8-1.5 parts of paraffin. The above materials are mixed at a high speed and are milled on an open mill, a blank is prepared, and the prepared blank is shaped by hot pressing by a vulcanizer. The invention has simple operation, needs less equipment, correspondingly lowers operation difficulty and equipment investment, can lower cost, has strong competitive power, especially can substantially lower and put an ends to air bubbles in products, improves the quality of a product and improves the rank; the product has the advantages of high strength, light weight, worm damage prevention, low cost, no toxin, environment protection and reuse.

Description

technical field [0001] The invention relates to a composition of a wood-plastic material and a manufacturing process thereof, belonging to a method for reusing wood processing waste or plant fibers, and in particular to a method for preparing wood-plastic materials by mixing wood powder or plant fibers with thermoplastics. A composite material method and the prepared high-strength wood-plastic composite material. Background technique [0002] Wood Plastic Composites (WPC, Wood Plastic Composites) is a composite material made of plastic and wood powder or plant fibers. Its commercial application began in the mid-1950s. Due to the increasing shortage of timber, oil and other resources, "replacing wood with plastic" has received great attention from the society. Since the 1990s, wood-plastic materials have developed rapidly. Compared with traditional materials, wood-plastic products have unique advantages: no defects of wood products (knots, oblique grains, decay, etc.), a w...

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Problems solved by technology

When the two are combined, the interface strength is very poor, which greatly weakens the mechanical properties of the material, especially the impact properties

[0006] However, in the prior art, the method of mixing wood powder or plant fibers with polymers to prepare wood-plastic composite materials has disadvantages such as high cost and more equipment required, and the strength of the produced products is not high enough, and the toughness is relatively low. Low, there are more air bubbles in the product, which cannot meet the actual needs of the market

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