1.What are the types of rubber accelerators？

Accelerators mainly include thiazoles, sulfenamides, thiurams, guanidines and disulfide carbamates. With the continuous deepening and improvement of environmental protection awareness, various accelerators have become objects of restricted use due to their toxicity and pollution.

The substitutes of sulfenamide accelerators are mainly accelerators TBBS (NS), TBSI, CBBS and CBS (CZ), etc.; the substitutes of thiuram accelerators are mainly accelerators TBzTD, etc.; dithiocarbamate The substitutes of the accelerators are mainly the accelerator ZBEC (DBZ), etc.; the substitutes of the accelerators DTDM and OTOS are mainly Duralink HTS and Perkalink-900.

2.Where can rubber accelerators be used?

At present, the commonly used types of accelerators in my country are accelerators CBS and TBBS, which account for more than 36% of the total consumption of accelerators in my country; accelerators MBT, MBTS (DM), CBS and TBBS. more than 70% of the total dosage.

Accelerator TBzTD has a long scorch time and good processing safety, and can replace thiuram accelerators such as accelerators TMTD and TETD. The accelerator TBSI has the characteristics of prolonging the scorch time and slowing down the vulcanization speed in the rubber compound, which can significantly improve the anti-reversion performance of NR. The accelerator ZBEC can be used as the main accelerator or auxiliary accelerator for NR, SBR, EPDM, natural latex and synthetic latex, and has good scorch resistance. The diphenylguanidine accelerator DPG (D) is mainly used as an accelerator for natural rubber and synthetic rubber. Adding accelerator DPG to the high silica filled compound can significantly reduce the Mooney viscosity of the compounded rubber. Increase vulcanization rate.