Anti-ultraviolet fireproof wood-plastic composite material and preparation thereof

Abstract

The invention relates to an anti-ultraviolet fireproof wood-plastic composite material. Comprising 80-100 parts of thermoplastic plastic, 50-70 parts of carboxymethyl chitosan modified plant fiber, 4-5 parts of phosphorus-containing phenolic resin, 1-3 parts of P-N-Si flame retardant, 1-2 parts of nano titanium ceramic resin, 15-25 parts of bamboo charcoal powder, 3-4 parts of titanium oxide / o-hydroxybenzophenone / phthalocyanine blue mixture, 5-6 parts of calcined diatomite, 7-10 parts of maleic anhydride grafted polyethylene and 1-3 parts of antioxidant. After the plant fibers are modified by carboxymethyl chitosan, the compatibility of the plant fibers and thermoplastic plastics is greatly improved, and the interfacial interaction force is further improved by adding maleic anhydride grafted polyethylene. The bamboo charcoal powder and the calcined diatomite are filled in gaps of the wood plastic, so that the mechanical strength, the mechanical property, the heat aging resistance and the cracking resistance are improved. The phosphorus-containing phenolic resin and the P-N-Si flame retardant have a synergistic effect, so that the flame retardance is very excellent. The wood-plastic composite material disclosed by the invention has relatively high resistance to ultraviolet rays, and also has excellent flame retardance, aging resistance and mechanical properties.

Description

technical field [0001] The invention relates to the field of chemical materials, in particular to an anti-ultraviolet fireproof wood-plastic composite material and preparation thereof. Background technique [0002] Forest resources play a vital role in protecting the ecological environment on which human beings depend. my country is a country with poor wood resources, and it needs to consume a lot of wood every year, so that the destruction of natural vegetation, the deterioration of the ecological environment, and the intensification of soil desertification. Wood-plastic composite material is a new type of composite material made by mixing and molding wood powder, bamboo powder, bran powder or crop straw powder and PVC and PE resin as the main raw materials. Combining the properties and characteristics of wood and plastic, it is a new composite material that can replace wood, plastic and metal. The vast majority of indoor and outdoor decorative building materials can be m...

AI Technical Summary

Problems solved by technology

It is necessary to add a large number of additives to improve the above-mentioned problems of composite wood-plastic materials, but a large number of additives will affect the mechanical properties of wood-plastic composite materials, the decline in mechanical properties, oxidation resistance and toughness, etc.

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