A heat-resisting environmental-friendly polyvinyl chloride material

Abstract

A heat-resisting environmental-friendly polyvinyl chloride material is disclosed. The material comprises following components by weight: 65-80 parts of polyvinyl chloride, 20-35 parts of nitrile butadiene rubber, 5-15 parts of methyl methacrylate-butadiene-styrene copolymer, 2-8 parts of chlorinated polyethylene, 0.5-1.5 parts of stearic acid, 1-2.5 parts of zinc phosphite stearate, 0.5-1.5 parts of calcium stearate, 0.2-2 parts of zinc nitrilotiracetate, 1-2.5 parts of acetyl tributyl citrate, 2-8 parts of butyl epoxystearate, 2-6 parts of pentaerythritol, 2-5 parts of oxooctadecyl benzoyl methane, 0.5-2.5 parts of recycled phenolic resin, 5-15 parts of a modified composite filler, 0.5-2 parts of polyethylene wax and 2-7 parts of a silane coupling agent. The material is good in heat resistance and waterproofness, excellent in flame retardance and good in environmental protection performance.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride, in particular to a heat-resistant polyvinyl chloride environmental protection material. Background technique [0002] Polyvinyl chloride has the advantages of high mechanical strength, good chemical corrosion resistance, low price, good flame retardancy and electrical insulation, and is mainly used in the production of transparent cables, soft toys, medical equipment, food packaging films, artificial leather products, etc. Soft products and hard products such as plates, doors and windows, pipes and valves have become the second largest general-purpose resin after polyethylene. Since the polyvinyl chloride macromolecular chain contains unstable chlorine atoms, it begins to decompose and release hydrogen chloride at 100°C, and a color-producing conjugated polyene structure is formed on the molecular chain, thereby discoloring the product. The degradation of ethylene has a catalytic effe...

AI Technical Summary

Problems solved by technology

Since the polyvinyl chloride macromolecular chain contains unstable chlorine atoms, it begins to decompose and release hydrogen chloride at 100°C, and a color-producing conjugated polyene structure is formed on the molecular chain, thereby discoloring the product. The degradation of ethylene has a catalytic effect. With the increase of temperature or the extension of heating time, a large amount of hydrogen chloride will accumulate in the material, and the material will easily undergo a "zipper-opening" degradation reaction, which will greatly accelerate the degradation of polyvinyl chloride, making the color of the material deepen sharply. Decrease in mechanical properties, even loss of use value due to carbonization

Therefore, heat stabilizers must be used in polyvinyl chloride products to improve the heat resistance of polyvinyl chloride materials; however, the heat resistance of existing polyvinyl chloride materials is still not ideal, and there are defects such as short service life and decreased safety. , to be further improved