Rubber accelerator refers to rubber vulcanization accelerator. Rubber vulcanization is mainly carried out with sulfur, but the reaction between sulfur and rubber is very slow, so vulcanization accelerators came into being. The addition of accelerator into the rubber compound can promote the activation of the vulcanizing agent, thereby accelerating the cross-linking reaction between the vulcanizing agent and the rubber molecules, and achieving the effect of shortening the vulcanization time and reducing the vulcanization temperature. The main vulcanization accelerators used are mainly sulfenamides, thiazoles, thiurams, and some guanidines, thioureas and dithiocarbamates according to their chemical structures. Among them, sulfenamides have the best comprehensive performance and are the most widely used.
Series introduction:
There are six types of commonly used rubber accelerators.Thiazoles: M (2-thiol benzothiazole), DM (dibenzothiazole disulfide)
Sulfenamides: CBS (N-cyclohexyl-2-benzothiazole sulfenamide), TBBS (N-tert-butyl-2-benzothiazole sulfenamide), NOBS (N-oxydiethylene (N,N'-bicyclohexyl-2-benzothiazole sulfenamide), DZ (N,N'-bicyclohexyl-2-benzothiazole sulfenamide.
Thiuram: TMTD (tetramethylthiuram disulfide), TMTM (tetramethylthiuram monosulfide), TETD (tetraethylthiuram disulfide), DPTT (pentamethylene thiuram hexasulfide) Lamb)
Thioformates: ZDC (zinc diethyl dithiocarbamate), BZ (zinc dibutyl dithiocarbamate), PZ (zinc dimethyl dithiocarbamate)
Guanidines: D (diphenylguanidine)
other
use:
Rubber accelerator is an after-effect accelerator for natural rubber, cis-butadiene rubber, isoprene rubber, styrene-butadiene rubber and reclaimed rubber. Strong carbon black compound. Safe at operating temperature, strong scorch resistance, fast vulcanization, high tensile strength, and can increase the proportion of synthetic rubber used. Low toxicity and high efficiency, it is an ideal substitute for NOBS, with excellent comprehensive properties, it is called a standard accelerator. Widely used in the production of radial tires. It can be used in combination with aldamine, guanidine and thiuram accelerators, and when used in combination with scorch inhibitor PVI, it forms a good vulcanization system. Mainly used in the manufacture of tires, rubber shoes, hoses, tapes and cables.
DUBA main product range: foaming agent, active agent, desiccant, defoamer, environmental accelerator. If necessary, we can always provide a small sample for laboratory trial. Welcome to send us an inquiry!
