Environment-friendly heat stabilizer

Abstract

The invention discloses an environment-friendly heat stabilizer which is characterized by comprising, by weight, 20-25 parts of calcium stearate, 15-20 parts of calcium ricinoleate, 20-25 parts of zine stearate, 15-20 parts of zinc ricinoleate, 5-10 parts of anti-oxidants and 5-10 parts of lubricants. The beneficial effects are that the heat stabilizer contains no toxic component, is environment-friendly, has excellent static property, dynamic property, and color retentivity, and is low in cost.

Description

technical field [0001] The invention relates to an environment-friendly heat stabilizer, which belongs to the field of chemical industry. Background technique [0002] Due to the poor processing thermal stability of PVC at high temperatures, heat stabilizers must be added to maintain its performance during its molding process. Commonly used heat stabilizers mainly include lead salts, organotins, rare earths, and metal soaps. Lead salt stabilizers are low in price, good in heat stabilizing effect, and are used in relatively large amounts, but their toxicity is high, seriously endangering human health and polluting the environment. Contents of the invention [0003] In order to solve the above problems, the present invention provides an environmentally friendly thermal stabilizer. [0004] An environment-friendly heat stabilizer is characterized in that it comprises calcium stearate, calcium ricinoleate, zinc stearate, zinc ricinoleate, an antioxidant and a lubricant. [0...

AI Technical Summary

Problems solved by technology

Lead salt stabilizers are low in price, good in thermal stability, and are used in relatively large amounts, but they are highly toxic, seriously endangering human health and polluting the environment