Polyvinyl chloride-based wood plastic composite and preparation method thereof

Abstract

The invention provides a polyvinyl chloride (PVC)-based wood plastic composite and a preparation method thereof. The PVC-based wood plastic composite is mixed by the following raw materials by weight percent: 32-51% of PVC, 1-3% of stabilizer, 1-2% of processing additive, 2-3% of impact modifier, 2-3% of lubricant and 40-60% of wood flour. The preparation method comprises the following steps: mixing the raw materials according to the formula ratio, using a conical twin-screw for mixing, cooling and solidifying, and cutting to obtain the finished product. Compared with the common wood plastic material, the prepared molding-grade PVC-based wood plastic composite has the advantages of high wood flour filling volume, good high temperature fluidity and the like and can be directly used for molding production; and the formed wood plastic product has good comprehensive physical-mechanical performance and appearance, strong wood feeling and obvious cost advantage.

Description

technical field [0001] The invention belongs to the field of wood-plastic materials, and relates to a PVC-based wood-plastic composite material and a preparation method. Background technique [0002] The practical application range of wood-plastic materials is very wide. In the packaging and warehousing industry, it can be used to make pallets, packing boxes, centralized equipment, warehouse pads, cargo racks, etc.; in urban construction gardening and home decoration, it can be used to make gazebos, seats, and flower pots. , small bridges, fences, trash cans, pillars, wall panels, corner lines, dadoes, door cabinets, furniture and building templates, etc. [0003] At present, the application of ordinary PVC wood-plastic materials still has certain limitations. In terms of furniture design and manufacturing, since the production process of ordinary wood-plastic materials is extrusion molding, they can only present a straight line in most cases, with almost no curves and radi...

AI Technical Summary

Problems solved by technology

In terms of furniture design and manufacturing, since the production process of ordinary wood-plastic materials is extrusion molding, they can only present a straight line in most cases, with almost no curves and radians. Although some domestic wood-plastic enterprises have recently begun to design products, but the curvature of these products can only be applied to architecture, and it is difficult to meet the complex requirements of furniture design

[0004] At present, there are two main defects in the processing technology of ordinary PVC-based wood-plastics. One is that the compatibility between unplasticized polar wood materials and non-polar plastics is poor, and the combination of plastics and wood materials is not tight, resulting in a decline in material quality; The addition of ordinary PVC-based wood-plastic composite material powder is less than 40%, the proportion of plastic is large, the wood effect is not ideal, and the production cost is high

Images