Antioxidant D(PBN),N-phenyl-2-naphthylamine ---Rongcheng
Properties: Light gray powder, the melting point 108 °C, the boiling point 395-399.5 °C, the specific gravity 1.18. extremely soluble in acetone, ethyl acetate, methyl chloride, benzene and carbon disulfide.Soluble in alcohol and carbon tetrachloride. Not soluble in water and gasoline. Exposure in the air and sunlight,will become gray red.
Vulcanization of rubbers by sulfur alone is an extremely slow and inefficient process. The chemical reaction between sulfur and the Rubber Hydrocarbon occurs mainly aC (doublet the C = bonds ) and each crosslink requires 40 to 55 sulphur atoms (in the absence of accelerator). The process takes around 6 hours at 140°C
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Rubber accelerator ZDC is used as vulcanization accelerating agent for butadiene rubber, nitrile rubber and neoprene rubber. It is used as rubber antioxidant in adhesive systems. It is also used in medical rubbers, adhesive plaster and self-vulcanizing rubber products. It is widely used
Rubber Accelerator DCBS(DZ) of New product from China
DCBS is a sulfenamide accelerator with excellent anti-scorching property and delayed onset of cure. It is compatible with natural and synthetic rubbers, suitable for radial ply tyre, rubber belts and shock absorber, etc. Particularly it produces good adhesion to metal.
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Three metabolites, among four detected, were identified. 2-Mercaptobenzothiazole (MBT) is the most important and most widely used member of the benzothiazole (BT) family. MBT is typically a rubber additive, but it has also other applications, such as inhibiting biocorrosion in cooling systems or in paper manufacturing.
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