Moldproof plastic-wood wallboard and preparation method thereof

Abstract

The invention relates to a moldproof plastic-wood wallboard and a preparation method thereof. PVC (polyvinyl chloride) powder, microcrystalline calcium carbonate, wood powder, a foaming agent, foamingagent promoter, mold inhibitor, flexibilizer and polyethylene wax are adopted as materials by the moldproof plastic-wood wallboard and appropriately proportioned by weight, the PVC powder, the microcrystalline calcium carbonate, the wood powder, the flexibilizer and the polyethylene wax are first mixed and extruded to be pelletized, so that master batch is obtained, and afterwards the master batch is added with the foaming agent, the foaming agent promoter and the mold inhibitor and mixed at high speed. Thus, the PVC powder, the microcrystalline calcium carbonate, the wood powder, the flexibilizer and the polyethylene wax first undergo a pre-combining stage, the mold inhibitor, the foaming agent and the foaming agent promoter are then added and mixed at high speed, the characteristic of the promoter that effectiveness cannot be decreased due to high temperature and high shear is sufficiently exerted, ultimately the moldproof plastic-wood wallboard has a better moldproof property, andcan effectively block moisture and inhibit mold, and moreover, the moldproof plastic-wood wallboard has a good mechanical property and good toughness, and is light.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a mildew-resistant plastic-wood wallboard and a preparation method thereof. Background technique [0002] Wood-plastic composite material is prepared by compounding thermoplastics and wood fiber or plant fiber. High impact resistance, the product can be recycled. However, due to the different surface properties of the plant fiber and the resin matrix, the interface bonding effect is poor when the two are combined, which leads to the reduction of various properties of the composite material and affects the popularization and application of the composite material. [0003] Existing materials that use non-polar or low-polar thermoplastics as substrates and wood raw materials, such as polyethylene, polypropylene, polyvinyl chloride and polystyrene, and their recycled materials, when the air humidity is high When used, it is very easy to mold, and it is easy ...

AI Technical Summary

Problems solved by technology

However, due to the different surface properties of the plant fiber and the resin matrix, the interface bonding effect is poor when the two are combined, which leads to the reduction of various properties of the composite material, which affects the popularization and application of the composite material.

[0003] Existing materials that use non-polar or low-polar thermoplastics as substrates and wood raw materials, such as polyethylene, polypropylene, polyvinyl chloride and polystyrene, and their recycled materials, when the air humidity is high When used, it is very easy to mold, and it is easy to break and fall off after a long time, which affects the appearance and economy