Flame-retardant antibacterial wood-plastic composite board and preparation method thereof

Abstract

The invention provides a flame-retardant antibacterial wood-plastic composite board. The flame-retardant antibacterial wood-plastic composite board comprises the following raw material components in parts by weight: 60 to 65 parts of polyvinyl chloride, 15 to 20 parts of polypropylene, 60 to 65 parts of wood flour, 10 to 12 parts of calcite powder, 10 to 12 parts of diatomaceous earth, 8 to 10 parts of attapulgite, 5 to 6 parts of vermiculite powder, 2 to 4 parts of oxidized polyethylene wax, 4 to 6 parts of magnesium hydroxide, 2 to 3 parts of tripolycyanamide, 1 to 2 parts of hokutolite powder, 0.1 to 0.5 part of titanium dioxide, 2 to 3 parts of pine-needle powder, 1.5 to 2 parts of naringenin, 1.5 to 2 parts of thymus mongolicus, 1 to 1. 5 parts of tamarind pulp shell, 2 to 3 parts ofnakedflower beautyberry leaves, 1.5 to 2 parts of leaves of Chinese ilex, 1 to 1.5 parts of herba schizonepetae, 0.3 to 0.5 part of a coupling agent, 4 to 6 parts of a stabilizer, 2.5 to 4 parts of acompatilizer, and 0.5 to 1 part of an ultraviolet light absorbers. The wood-plastic composite board is excellent in mechanical properties, flame-retardant properties, and antibacterial, sterilized andmildew-proof properties.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a flame-retardant and antibacterial wood-plastic composite board and a preparation method thereof. Background technique [0002] Wood-plastic composite material is a composite profile mainly made of wood or cellulose as the base material and plastic. Wood-plastic composite material has the advantages of woody feeling of solid wood material and weather resistance and microbial resistance of plastic matrix. And during use, it will not emit gases that are harmful to human health, that is, it will not pollute the environment, and the material itself can be reused. It is a brand-new green product and an ecologically clean composite material. [0003] At present, wood-plastic composite materials have begun to replace solid wood and are widely used in various fields, most commonly used in the field of building decoration, and wood materials for construction need to have excellent anti...

AI Technical Summary

Problems solved by technology

Although wood fibers in wood-plastic composites are coated in a plastic matrix, they have better anti-microbial degradation ability than natural wood, but due to the large difference in surface polarity between wood fibers and plastics, even if added in composite processing Without a compatibilizer, there are still a large number of pores on the two-phase interface inside the material, and the pores are usually interconnected. Wood fibers absorb water through these pores and will be contaminated by microorganisms and then degraded by microorganisms. Microorganisms will reproduce inside the material. , eventually leading to structural damage to the material, corroded

At the same time, both thermoplastics and wood fibers are hydrocarbons, which can burn when exposed to open flames or heated, so wood-plastic composites are easy to burn, which greatly limits their applications.

[0004] In addition, with the development of society, people's demand for multifunctional materials is increasing, and most of the existing wood-plastic composite materials have single functions and only have simple decorative effects, which can no longer meet people's requirements.

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