Antibacterial and anti-mildew plastic-wood composite material board and preparation method thereof

Abstract

The invention discloses an antibacterial anti-mildew plastic and wood composite material plate and a preparation method thereof. The plate is prepared from modified wood flour, plastic, maleic anhydride grafted plastic, graft modified nanometer zinc oxide, activated calcium carbonate, calcium stearate, terpene resin and an antioxidant. The preparation method comprises the steps that the wood flour is modified by using dimethyl dodecyl ammonium chloride; nanometer zinc oxide is treated by using gamma-methacryloxypropyl trimethoxy silane and subsequently subjected to graft modification by using styrene; calcium carbonate is activated by using polyethylene glycol; the plastic, the maleic anhydride grafted plastic, calcium stearate, graft modified nanometer zinc oxide and the terpene resin are stirred and extruded to obtain modified plastic; the modified plastic, the modified wood flour, activated calcium carbonate and the antioxidant are stirred, melted, co-mixed and extruded to form the plate. The antibacterial anti-mildew plastic and wood composite material plate disclosed by the invention is convenient to produce and manufacture, low in production cost, friendly to environment, high in modulus, large in rigidity, resistant to creep deformation and excellent in antibacterial and anti-mildew performances.

Description

technical field [0001] The invention relates to the technical field of plastic-wood composite materials, in particular to an antibacterial and anti-mildew plastic-wood composite material board and a preparation method thereof. Background technique [0002] In recent years, a kind of green environmental protection fiber powder mainly made of wood powder, rice bran powder and other plant fiber powder as the basic material, thermoplastic polymer material (plastic) and processing aids, etc., mixed evenly and then heated and extruded by mold equipment. Materials, that is, wood-plastic composite materials are getting more and more attention. It can be made into automotive interior decoration parts, building templates, outdoor tables and chairs, garden handrails and decorative panels, open floors, waste bins, railways, etc. Sleepers, corridor panels, window and door panels, concrete cement formwork, etc. used in the construction industry. Wood-plastic composite materials have many...

AI Technical Summary

Problems solved by technology

However, because the wood-plastic composite material is filled with a large amount of plant fibers, although the plant fibers are covered by plastic and acted on by coupling agents or compatibilizers, they are not as easy to be infected by mold and wood rot fungi as pure plant fibers, but when When it is wet in rainy days or the ground is soaked in water, the wood-plastic composite material can still provide a good living environment for fungi, causing the wood-plastic composite material to mildew, and the mechanical properties of the material will gradually decline, or even rot, greatly shortening its service life

At the same time, mildew will cause mold spots visible to the naked eye on the surface of wood-plastic composite materials, which will affect its appearance.