Environment-friendly flame-retardant type wood-plastic composite and preparation method thereof

Abstract

The invention discloses an environment-friendly flame-retardant type wood-plastic composite. The composite is prepared from, by weight, 80-200 parts of wood powder, 20-40 parts of polystyrene, 20-50 parts of polyvinyl chloride, 10-30 parts of calcium silicate, 8-25 parts of aluminum oxide, 5-20 parts of magnesium ammonium phosphate, 5-18 parts of water base sepiolite, 7-20 parts of acrylic resin, 5-16 parts of alkenyl succinic acid copper, 2-12 parts of silane coupling agents, 3-15 parts of cross-linking agents and 4-12 parts of solvent. The invention further discloses a preparation method of the environment-friendly flame-retardant type wood-plastic composite. The wood-plastic composite prepared through the method has good heat resistance and flame resistance, meanwhile, the tensile strength of the prepared wood-plastic material also meets basic application requirements, in addition, no halogenous fire retardant is used in the preparation process, the eco-environment protection is achieved, and the composite is fairly suitable for being used and popularized generally.

Description

technical field [0001] The invention relates to the field of composite materials and their preparation, in particular to an environment-friendly flame-retardant wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-plastic composite material is a kind of composite material formed by filling wood fiber material in polymer. Because wood-plastic composites have good mechanical properties, can reduce the use of polymers, and reduce costs, they are becoming more and more popular. Wood-plastic composites combine the advantages of wood fiber materials and polymers, and have the advantages of high surface hardness, dimensional stability, water resistance, and corrosion resistance. The many advantages of wood-plastic composite materials have attracted much attention for their applications in construction and automobiles. However, most of the polymers in wood-plastic composites are hydrocarbons, which are not heat-resistant, and are eas...

AI Technical Summary

Problems solved by technology

However, most of the polymers in wood-plastic composites are hydrocarbons, which are not heat-resistant, and are easy to burn when exposed to fire or high temperature conditions. At the same time, the added wood powder is also easy to burn, so that the entire wood-plastic composite material The heat is not high, and its flammability greatly limits the application

In order to solve this problem, in the prior art, adding a flame retardant is used to improve its heat resistance. Although this improves the flame retardancy of wood-plastic materials to a certain extent, most of the flame retardants contain halogen, which is not environmentally friendly. In addition, in the event of a fire, wood-plastic composites will still burn, and the flame retardant will decompose carcinogenic and toxic gases after burning, which poses a greater threat to human life.

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