Corrosion-resistant environment-friendly PVC modified material

Abstract

The invention discloses a corrosion-resistant environment-friendly PVC modified material. The material comprises the following raw materials in parts by weight; 50-70 parts of PVC resin, 20-40 parts of nitrile rubber, 10-15 parts of a filling agent, 2-6 parts of a heat stabilizer, 1-20 parts of a plasticizer, 20-40 parts of an elastic modifier, 2-4 parts of an antioxidant and 3-5 parts of a lubricant, wherein the PVC resin is ethylene-process PVC resin with a polymerization degree of 1000 to 1200 and a density of 1.35 to 1.45 g / cm<3>; the filling agent is one of calcium carbonate, argil, talcum powder, diatomite and silicon dioxide; the heat stabilizer is prepared from a main stabilizer, an auxiliary stabilizer and an auxiliary agent according to a weight ratio of (20-40): (4-8): 1; the plasticizer is a mixture composed of a non-migration plasticizer PN-1030 and epoxidized soybean oil according to a weight ratio of (13-16): 1; and the elastic modifier is expanded polystyrene with a glass transition temperature of 80-90 DEG C and a density of 1.04-1.06 g / cm<3>. The material has the characteristics of capability of preventing photolysis and thermal decomposition, good elasticity, high tensile strength, good plasticity, good low temperature resistance, environment friendliness and high oxidation and corrosion resistance, and materials of all the components are convenient to obtain.

Description

technical field [0001] The invention relates to the technical field of PVC modified materials, in particular to a corrosion-resistant and environment-friendly PVC modified material. Background technique [0002] PVC material is polyvinyl chloride, which is one of the largest plastic products in the world. It is cheap and widely used. The polyvinyl chloride resin is white or light yellow powder. The molecular weight of industrially produced PVC is generally in the range of 50,000 to 110,000, with a large polydispersity, and the molecular weight increases with the decrease of the polymerization temperature; there is no fixed melting point, it starts to soften at 80 to 85°C, and becomes viscoelastic at 130°C , 160 ~ 180 ℃ began to change into a viscous flow state; it has good mechanical properties, impact strength, and excellent dielectric properties. [0003] The performance indicators of most of the existing PVC materials are only meeting the basic requirements of national s...

AI Technical Summary

Problems solved by technology

[0003] The performance indicators of most of the existing PVC materials are only meeting the basic requirements of national standards, and the current PVC materials have poor elasticity, are easy to age, and are not heat-resistant. When the temperature is high, they will decompose and produce Hydrogen chloride, and further automatic catalytic decomposition, causing discoloration, rapid decline in physical and mechanical properties, poor corrosion resistance, making it less effective for use, therefore, in order to solve this series of problems, we proposed a corrosion-resistant and environmentally friendly PVC modified Materials to solve problems