A wood-plastic composite material board with cross-linked microporous structure and preparation method thereof

Abstract

The present invention first uses acrylic acid to modify wood powder, and then polyvinyl chloride plastic particles, acrylic acid modified wood powder, benzoic acid, POE-g-MAH, PET fiber, bis-tert-butyl peroxide cumene, and azodimethyl Amide, compound auxiliary foaming agent, triallyl isocyanurate, tribasic lead sulfate and dibutyl phthalate, extruded and foamed to form a wood-plastic board with cross-linked microporous structure. The invention has the advantages of convenient production, low cost, strong wood feeling, no aging and discoloration, no warping and deformation, low density, excellent static bending strength, high impact strength, certain adsorption effect on toxic and harmful gases, stable and firm cells , will not release formaldehyde, easy to install and maintain, recyclable and environmentally friendly. It can be widely used in many occasions such as buildings, halls, home offices, etc. It can be made into door panels, photo frames, picture frames, base lines, hanging gussets, partitions, roofs and other products, and can also be used as suspended beams, rattan racks, and outdoor balconies board etc.

Description

technical field [0001] The invention relates to a plastic-wood composite material, in particular to a plastic-wood composite material plate with a cross-linked microporous structure and a preparation method thereof. Background technique [0002] Various boards are often used in homes, offices, conference rooms, laboratories and other occasions. Because people have an affinity for wood, wooden boards are often used. In order to achieve aesthetics and anti-corrosion purposes, wooden boards are often used Surface painting treatment is required. Wooden panels have some disadvantages, such as easy to shrink and crack, easy to deform when exposed to water, easy to mold when exposed to moisture, and easy to burn when exposed to fire. However, the surface paint layer of spray-painted wooden panels is easily scratched during use. It will leave scratches and affect the appearance, and the heat resistance of the paint layer is poor. If you put hot objects such as teacups with boiling w...

AI Technical Summary

Problems solved by technology

However, due to the use of a large amount of wood powder and other fillers in PVC wood-plastic composite materials, its ductility and impact resistance are reduced, the material is brittle, and its density is nearly twice that of traditional wood products, which limits its wide use.