Application skills of compounding agent for curing system of light color recycled rubber products

Light color rubber products, also known as non-black rubber products, are widely used in life and deeply loved by consumers. Under the trend of increasingly fierce market competition, rubber products enterprises use recycled rubber to reduce costs. When using recycled rubber as the main raw material to produce light-colored rubber products, sulfur curing system, calcium carbonate, talcum powder, kaolin, white carbon black and other materials are mostly used for reinforcement. In this way, the quality of rubber products can be effectively improved, and more raw material costs can be reduced. The following editor will share with you the application skills of the compounding agent for the curing system of light-color recycled rubber products.

1. Application skills of sulfur curing agent for light-color recycled rubber products
Sulfur is a common curing agent in rubber products, which can be divided into soluble sulfur and insoluble sulfur according to classification. Insoluble sulfur is a sulfur polymer α- The sulfur is heated to a high temperature near the boiling point and becomes a dark brown viscous liquid, and then rapidly cooled and polymerized, or the hot sulfur vapor is sprayed into cold water and rapidly cooled to below 90 ℃. Insoluble sulfur will be evenly dispersed in the rubber mixture, insoluble in the rubber, and difficult to spray frost due to large amount. Therefore, it is recommended to use insoluble sulfur when there is a large amount of sulfur in the light-colored recycled rubber products.

When insoluble sulfur is used as the vulcanizing agent of reclaimed rubber, it exists in a dispersed state, which effectively resists the accumulation of sulfur, reduces the burning tendency of rubber during storage, and makes the rubber free from frost and has good viscosity. The use of recycled rubber 2ELYY121YC to produce light-colored rubber products can better ensure the appearance of the products. From the perspective of production technology, the use of insoluble sulfur can maintain the viscosity between semi-finished parts, which is conducive to molding operation, shorten curing time, reduce the amount of curing agent, and ensure the curing uniformity of recycled rubber. Insoluble sulfur has no migration in the adjacent rubber layer, which can further improve the aging resistance of light-colored recycled rubber products.