Which accelerators are suitable for natural rubber and synthetic rubber?

We supply both primary and secondary accelerators that are suitable for both for natural rubber and synthetic rubber compounds including NR, CR, SBR, NBR, BR, EPDM and chlorobutyl rubber. We offer a wide range of cure speeds from delayed action to ultra-accelerators.

What is accelerator in rubber?

Accelerator is a substance that acts to promote the vulcanization. In rubber formulations is mainly used to accelerate the vulcanization reaction and enhance the physical properties of the rubber (tensile strength, elongation, …), and chemical properties (resistance, chemical resistance, solvent resistance, high temperature …).

How to increase the speed of vulcanization of rubber?

Chemindustries offers full range of rubber accelerators to increase the speed of the vulcanization of rubber. We supply both primary and secondary accelerators that are suitable for both for natural rubber and synthetic rubber compounds including NR, CR, SBR, NBR, BR, EPDM and chlorobutyl rubber.

What is rubber vulcanization?

Vulcanization is a chemical process that involves treating rubber with sulfur at high temperatures to improve its properties. Rubber accelerators play a crucial role in this process by speeding up the reaction between rubber and sulfur, thus reducing the vulcanization time and making the process more efficient.

How does zinc oxide affect rubber acceleration?

Zinc oxide plays a dual role in rubber acceleration. It acts as an activator, enhancing the effectiveness of other accelerators. Simultaneously, it also contributes to cross-linking in the vulcanization process, improving the rubber’s hardness and tensile strength.

What are the different types of rubber accelerators?

There are several types of rubber accelerators, classified based on their composition and the type of rubber they’re used with. The most common ones include Thiazoles (MBT, MBTS, and ZMBT), Sulfenamides (CBS, TBBS, NOBS, etc.), Guanidines (D, DOTG), Thiurams (TMTM, TMTD, DPTT), and Dithiocarbamates (ZDEC, ZDBC, ZDMC).