Novel PVC foamed profile and preparation method thereof

Abstract

The invention relates to a composite material, in particular to a novel PVC foamed profile and a preparation method thereof. The novel PVC foamed profile is prepared from components in parts by weight as follows: 100 parts of PVC, 3-25 parts of a toughening agent, 10-50 parts of calcium sulfate, 3-8 parts of a stabilizer, 0.6-3.5 parts of a foaming agent, 2-15 parts of a foaming control agent, 0.3-2.0 parts of an internal lubricant, 0.3-2.0 parts of an external lubricant, 1.0-1.5 parts of a PVC processing agent and 0.3-1.2 parts of a coupling agent. The content of filler in the PVC foaming system can be increased by 10%-30% in the formula while the weight of the product per meter is kept basically unchanged, the material has higher cost performance, the novel PVC foamed profile is developed according to the technical principle of a new material, is innovative in new material application, has the characteristics of facilitating resource utilization and being energy-saving, environment-friendly, green and economical and is suitable for industrial production.

Description

technical field [0001] The invention relates to composite materials, in particular to a new type PVC foam profile and its preparation method. 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 d...

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

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