N,N '-m-phenylene bismaleimide HA-8 Ⅰ. Introduction Product name: N,N '-m-phenylene bismaleimide Abbreviation: HA-8/PDM/HVA-2 Molecular formula: C14H8N2O4           Molecular weight: 268 Physicochemical properties: Yellow or brown-yellow powder, specific gravity 1.44, soluble in dioxycontinental ring, tetrahydrofuran and hot acetone, insoluble in petroleum bond, methylene chloride, carbon tetrachloride, benzene and water. CAS NO: 3006-93-7 Appearance: Structure type:     Ⅱ.Technical indicators Items Refers to the standard Appearance Yellow powder Melting point, ℃ 195℃or higher Burning residue, % 0.5% or less Heat reduction, % 0.5% or less Acid value, % 0.9% or less Sieve residue, 325 mesh 0.5% or less   Ⅲ. Use N,N '-m-phenylene bismaleimide manufactured by Yangchen Tech (also known as PDM or HVA-2) is a multifunctional rubber additive used as a vulcanizing agent in rubber processing, as a secondary vulcanizing agent in peroxide systems, and as an anti-curl agent and casting agent. It can be used in general rubber as well as specialty rubber and plastic systems. In natural rubber adhesive, combining with sulfur can prevent the return of moisture from vulcanization, improve heat resistance, reduce heat generation, aging resistance, improve the adhesion between rubber and cord and the modulus of vulcanized rubber. Used in shoulder rubber, cushion layer and other rubber materials, it can solve the shoulder hollow problem of bias truck tires, also can be used in large-size thick products of natural rubber and various rubber miscellaneous products. As an auxiliary vulcanizing agent in special rubbers such as chloroprene rubber, chlorosulphonated polyethylene rubber, styrene butadiene rubber, nitrile rubber, isoprene rubber, butyl rubber, bromobutyl rubber, acrylate rubber, silicone rubber and elastomer rubber, it can significantly improve cross-linking performance, improve heat resistance, suitable for high temperature vulcanization system, and reduce the compression permanent deformation is very obvious. It also reduces the amount of peroxide, prevents the rubber from burning during processing, and improves the adhesive strength between the rubber and the cord and metal. PDM is a sulfur-free vulcanizing agent, used for cable rubber, it can replace thiazoles, thiuram class and other sulfur-containing vulcanizing agents, to solve the copper wire and copper electrical appliances due to contact with sulfur-containing vulcanizing agent copper sulfide pollution black problem.        PDM is a sulfur-free vulcanizing agent for cable rubber, which can replace sulfur-containing vulcanizing agents such as thiazole and thiuram to solve the problem of blackening of copper wire and copper electrical appliance due to sulfur-containing agents and copper sulfide contamination.   If you have any questions,pls feel free to contact: business@xysjgm.com