PVC foaming wood plastic composite material

Abstract

The invention discloses a PVC foaming wood plastic composite material which is produced by processing the raw materials based on the parts by weight: 100 parts of polyvinyl chloride (PVC), 40-50 parts of lignified plant fiber, 10-20 parts of active light calcium, 3-6 parts of calcium zinc complex stabilizer, 1-3 parts of compound-type foaming agent, 0.5-1.5 parts of lubricating agent OPE wax, 0.5-1 part of compound lubricating agent and 3-8 parts of foaming conditioning agent; the raw materials are evenly mixed by a mixing machine and then are directly put into a screw extruder to be extruded and molded at the temperature of 160-170 DEG C. The PVC foaming wood plastic composite material is added with full dose of heat stabilizer in the process of blending and processing, so that the degradation temperature of plastics can be increased, thermal degradation of the plastics and carbonization of wood powder in the process of mixing and forming can be prevented, and the operation of extruding and molding can be completed in one step, thus greatly simplifying the production technique and reducing the production cost.

Description

Technical field: [0001] The invention relates to a PVC foamed wood-plastic material. Background technique: [0002] In addition to pure natural materials, the current building decoration materials such as floor or wall decoration boards mainly use wood fiber as the main raw material to process composite materials and completely synthetic materials such as PVC boards. Due to the ingredients of the current PVC foamed wood-plastic, wood fibers such as wood flour have poor thermal stability, and the cellulose and lignin in them are easy to decompose at high temperatures, and they will explode at about 190°C in the presence of oxygen. At the same time, because the processing temperature and decomposition temperature of polyvinyl chloride are also very close, in order to prevent the thermal degradation of plastics and wood powder in the process of mixing and molding, a two-step method is mainly used at present. , wood powder, and various additives for granulation; the second step...

AI Technical Summary

Problems solved by technology

Due to the ingredients of the current PVC foamed wood-plastic, wood fibers such as wood flour have poor thermal stability, and the cellulose and lignin in them are easy to decompose at high temperatures, and they will explode at about 190°C in the presence of oxygen. At the same time, because the processing temperature and decomposition temperature of polyvinyl chloride are also very close, in order to prevent the thermal degradation of plastics and wood powder in the process of mixing and molding, a two-step method is mainly used at present. , wood powder, and various additives for granulation; the second step is to add the granules to the extruder and extrude them at a certain temperature, resulting in a complicated process, increasing the cost of the formed product, and reducing the market competition of the product force