Anti-bacterial and anti-mould wood plastic composite plate and preparation process thereof

Abstract

The invention relates to a green and environment-friendly anti-bacterial and anti-mould wood plastic composite plate, which has certain heat resistance, hot deformation resistance, can keep toughnessat low temperature, and has a higher heat strength characteristic, high efficiency, anti-bacterial and anti-mould functions and a high waterproof ability. The anti-bacterial and anti-mould wood plastic composite plate solves the problems that (1) when a PVC-based wood plastic material is used under a higher temperature environment, the PVC-based wood plastic material is expanded so as to be cracked or is heat so as to be deformed, a mechanical property after heating is quickly reduced, and a potential safety hazard is generated; (2) with the low temperature, the obdurability of the PVC-based wood plastic material is reduced sharply, larger brittleness is produced, bending resistance, fracture resistance, impact resistance and strength are greatly influenced, even the phenomena of crack andbreakage seriously occur, and the use is greatly limited; (3) a mechanical property is lower; (4) the common PVC-based wood plastic material does not have good sterilization, anti-bacterial and anti-mould properties, and strong waterproofness, and is easy to affect by water vapor in a high humidity environment, so that various performances are remarkably reduced, and a lot of bacteria and mouldsare propagated.

Description

technical field [0001] The invention relates to the field of wood-plastic boards, in particular to a wood-plastic board, which is environmentally friendly, has certain heat resistance, heat deformation resistance, low temperature can maintain its own strength and toughness, has high thermal strength characteristics, and has high-efficiency antibacterial, mildew-proof and strong waterproof. Antibacterial and mildew-proof wood-plastic composite board with excellent ability. Background technique [0002] Wood-plastic board is a composite material prepared by mixing wood fibers with polymer plastics such as polypropylene (PP), polyvinyl chloride (PVC) or polyethylene (PE), and adding various additives to improve performance. It can be obtained by processes such as refining, extrusion and injection molding. As a green and environmentally friendly material, PVC-based wood-plastic composite materials with polyvinyl chloride as the main matrix are widely used in the production of o...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that when the above-mentioned PVC-based wood-plastic material is used as structural materials such as outdoor exterior walls, floors and templates, the exposure will cause the PVC-based wood-plastic material to expand and crack or be deformed by heat, and the mechanical properties of the PVC-based wood-plastic material will decline rapidly after being heated. When using external walls, etc., there will be great safety hazards; while the low temperature will lead to a sharp decline in the strength and toughness of PVC-based wood-plastic materials, resulting in greater brittleness, and a greater impact on the flexural, flexural and impact strength, and even severe cases. Cracking and fracture phenomena, so the use is also greatly restricted; the mechanical properties are low; the usual PVC-based wood-plastic composite materials do not have the ability of strong sterilization, antibacterial, mildew and strong waterproof, in high humidity environment It is easy to be affected by water vapor under the influence of water vapor, which will cause its various performances to decline significantly, swell and breed a large number of bacteria and molds. It provides a green environmental protection, heat resistance, heat deformation resistance, low temperature can maintain its own strength Antibacterial and mildew-proof wood-plastic composite board with high thermal strength characteristics and high-efficiency antibacterial, mildew-proof and strong waterproof capabilities