A kind of pvc foam profile and preparation method thereof

Abstract

The invention relates to a composite, in particular to a PVC (polyvinyl chloride) biomass foaming composite and a preparation method thereof. The PVC biomass foaming composite is prepared from components of preparation raw materials in parts by weight as follows: 100 parts of PVC, 5-50 parts of PVC renewable materials, 5-30 parts of biomass powder, 50-130 parts of calcium sulfate, 5-12 parts of a stabilizer, 1-5 parts of a foaming agent, 2-18 parts of a foaming regulator, 0.6-3.5 parts of an internal lubricant, 0.6-3.5 parts of an external lubricant, 1.8-2.5 parts of a PVC processing aid and 0.6-2.5 parts of a coupling agent. By means of the formula, the filler content of a PVC foaming system can be increased by 20%-50%, the weight of the product per meter is basically unchanged, and the material has higher cost performance. With the adoption of technique principles of new materials, the PVC biomass foaming composite has creativity of new material application, has characteristics of resource utilization, energy conservation, environmental protection and green economy and is suitable for industrial production.

Description

technical field [0001] The invention relates to composite materials, in particular to a PVC foam profile and a preparation method thereof. Background technique [0002] PVC wood-plastic materials are environmentally friendly products, and the processing technology is very mature. Through molds and co-extrusion, products with novel shapes and appearances can be designed, and the appearance is very close to wood, and some are even more beautiful than wood. The material can be recycled and reused, which brings good economic and social effects in terms of promoting resource recycling, energy conservation and emission reduction, and sustainable economic development. However, existing PVC wood-plastic materials still have shortcomings such as excessive production cost pressure, poor material mechanical properties and weather resistance, poor corrosion resistance, and high production energy consumption, which limits its application field. my country is a country with a large deman...

AI Technical Summary

Problems solved by technology

The Chinese invention patent application with publication number CN105001555A discloses a PVC-M pipe with high impact resistance and aging resistance. This document discloses the use of raw materials such as PVC, light calcium carbonate, MBS, calcium sulfate whiskers, and carbon black. , the synergistic effect of 6-tert-butyl-p-propanol and ethanethiol to make aging-resistant PVC plastic products, but the preparation process of this technology is complicated to operate, and light calcium carbonate and calcium carbonate whiskers are used. In the middle, the current is high, the energy consumption is large, and the ribs formed by calcium carbonate are irregular

The Chinese invention patent application with the publication number 102010552A discloses a PVC / whisker calcium sulfate composite material and its preparation method. The composite material is made by combining PVC and whisker calcium sulfate, which increases the strength of PVC, but the composition used The foaming of the composite material formed by sub-combination is irregular, so it is difficult to meet higher requirements in terms of strength, and the PVC material in the prior art also has the problems of poor toughness, narrow processing temperature range, and weak corrosion resistance

Some people have also tried to use natural anhydrite and light calcium carbonate to prepare higher-strength polyvinyl chloride pipes. For example, the Chinese invention patent application with publication number CN103740015A discloses a high-strength polyvinyl chloride pipe, but the natural anhydrite Compared with light calcium carbonate and acrylic resin, the foaming effect is poor, and high-strength profiles with smooth and uniform foaming cannot be obtained

Images