Cotton straw-enhanced plastic-wood product and preparation method thereof

Abstract

The invention provides a cotton straw-enhanced plastic-wood product which comprises the following components: 30-50 parts of short fiber wood materials, 10-30 parts of cotton straw long fibers, 25-45 parts of waste recycled plastics, 1-4 parts of lubricants, 0.2-1 parts of stabilizers, 1-2 parts of coupling agents, and 1-5 parts of other additives, wherein the other additives comprises one or more than one of an ultraviolet absorber, an antioxidant, a flame retardant, a colorant, and a compatilizer. The preparation method of the cotton straw-enhanced plastic-wood product comprises the following steps of: short fiber wood material treatment, cotton straw long fiber preparation and treatment, material mixing, granulation, and extrusion molding. The method enhances the mechanical properties of the plastic-wood product by reasonably preparing the cotton straw long fibers, and adding the cotton straw long fibers into the plastic-wood product. The plastic-wood product of the invention is green and environment-friendly, has no limitation of shape, and has wide applications and low cost.

Description

technical field [0001] The invention relates to the processing of plastic-wood products, in particular to a cotton stalk-reinforced plastic-wood product and a preparation method thereof. Background technique [0002] Plastic wood products are emerging green environmental protection products developed in recent years. They are mainly made of waste recycled plastics, wood fibers and related additives. [0003] The Chinese patent application document with the publication number CN1912299A discloses a wood-plastic board prepared from crop fibers and waste recycled plastics. Wood-plastic particles, put the wood-plastic particles into the paving machine to pave in the set mold frame, add 1 to 3 layers of glass fiber during the paving process to reinforce the material, heat-press and cool to shape. It can be seen that this method is only applicable to the production of solid plastic wood panels, and the shape is limited by the size of the mold frame, so it cannot produce various s...

AI Technical Summary

Problems solved by technology

It can be seen that this method is only suitable for the production of solid wood-plastic panels, and the shape is limited by the size of the mold frame, and it is impossible to produce various specifications or hollow plastic-wood products.

[0004] On the other hand, in order to solve the problem of difficult dispersion of wood fibers, in the preparation of existing wood-plastic products, many pairs of wood fibers adopt enhanced shear dispersion, but this method will cause the length of wood fibers to be relatively short (using traditional screw plasticizing conveying The fiber length in the products made by the method is often less than 1mm), so the two continuous molding methods of extrusion and injection basically use wood fiber powder as raw material, and the powder wood fiber only plays the role of compatibilization, thus obtaining The mechanical properties of plastic wood products are poor

At present, the common solution is to add glass fiber for reinforcement after granulation, but in this method, there are compatibility problems between glass fiber and wood fiber, plastic, and problems such as increased density, increased cost, and equipment wear and tear.