Series introduction and use of rubber accelerator- Taizhou Huangyan Donghai Chemical Co.,Ltd.

Rubber accelerator refers to a rubber vulcanization accelerator. Rubber vulcanization mainly uses sulfur, but the reaction between sulfur and rubber is very slow, so vulcanization accelerators came into being. The accelerator added to the rubber compound can promote the activation of the vulcanizing agent, thereby speeding up the cross-linking reaction between the vulcanizing agent and the rubber molecules, and achieving the effect of shortening the vulcanization time and lowering the vulcanization temperature. The main vulcanization accelerators used are divided into sulfenamides, thiazoles, and thiurams according to their chemical structure, as well as some guanidines, thioureas and dithiocarbamates. Among them, sulfenamides have the best comprehensive performance and the most widely used.

1. Series Introduction

There are six commonly used rubber accelerators:

Thiazoles: M (2-mercaptobenzothiazole), DM (dibenzothiazole disulfide)
Sulfonamides: CBS (N-cyclohexyl-2-benzothiazole sulfenamide), TBBS (N-tert-butyl-2-benzothiazole sulfenamide), NOBS (N-oxydiethylene 2-benzothiazole sulfenamide), DZ (N,N'-bicyclohexyl-2-benzothiazole sulfenamide)
Thiurams: 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

2. Purpose

Rubber accelerator is the aftereffect accelerator of natural rubber, butadiene rubber, isoprene rubber, styrene butadiene rubber and reclaimed rubber. It is usually used in the manufacture of cables, tapes, rubber shoes, inner tubes, bright color products, etc., especially suitable for alkali-containing products. Strong carbon black compound. It is safe at operating temperature, has strong scorch resistance, fast vulcanization speed, and high tensile strength, which can increase the use ratio of synthetic rubber. With low toxicity and high efficiency, it is an ideal substitute for NOBS. It has excellent comprehensive performance and is called a standard accelerator. It is widely used in the production of radial tires. It can be used together with aldehyde amine, guanidine and thiuram accelerators. When used together with anti-scorching agent PVI, it can form a good vulcanization system. Mainly used in the production of tires, rubber shoes, hoses, tapes, and cables.