Properties and applications of rubber anti-retrogressive vulcanizing agent HVA-2

Properties.
Yellow or brown powder, specific gravity 1.44 soluble in tetrahydrofuran and hot acetone, insoluble in petroleum ether, chloroform, benzene and water, melting point 195°c or more.
Uses.
As multi-functional pdm rubber auxiliary, it can be used as both vulcanizing agent and peroxide system's auxiliary vulcanizing agent in rubber processing, also can be used as anti-coke agent and viscosity increasing agent, it is applicable to both general rubber and special rubber and rubber-plastic with system.
In natural rubber, with sulfur yellow, it can prevent vulcanization reversion, improve heat resistance, reduce heat generation, aging resistance, improve rubber and cord adhesion and vulcanization rubber modulus. It is used in the rubber of shoulder rubber and buffer layer of load tires, which can solve the problem of shoulder hollow of slant load tires, and also can be used in the large-size thick products of natural rubber and various rubber miscellaneous products.
pdm in neoprene rubber, chlorosulfonated polyethylene rubber, butadiene rubber, nitrile rubber, isoprene rubber, butyl rubber, bromobutyl rubber, acrylate rubber, silicone rubber and rubber-plastic and other special rubber, as an auxiliary vulcanizing agent, can significantly improve the cross-linking performance, improve heat resistance, suitable for high temperature vulcanization system, reduce compression deformation is very obvious, can also reduce the amount of peroxide, to prevent Rubber in the process of scorching, improve the adhesive strength of rubber and cord and metal.
pdm is a sulfur-free vulcanizing agent for cable rubber, it can replace all sulfur-containing vulcanizing agents such as thiazoles, thiuram, etc., solving the problem of copper conductors and copper electrical appliances due to contact with sulfur-containing vulcanizing agents generated by the blackening of copper sulfide pollution.