Which rubber accelerators are suitable for vulcanization?

Western Reserve Chemical offers a 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 types of rubber accelerators do you offer?

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. Below is a rubber accelerators list of products that we offer.

What is the chemistry of rubber cure or rubber vulcanization?

The chemistry of rubber cure or rubber vulcanization is complex. There are several rubber vulcanization systems possible based on reactions with different chemicals. The selection of an accelerator will depend on the specific vulcanizing system.

What vulcanizing agent is used in rubber?

Elemental sulfur is the predominant vulcanizing agent for general-purpose rubbers. It is used in combination with one or more accelerators and an activator system comprising zinc oxide and a fatty acid (normally stearic acid). The most popular accelerators are delayed-action sulfenamides, thiazoles, thiuram sulfides, dithocarbamates and guanidines.

Which dithiocarbamate accelerator is best for dry rubber compounds?

The activities of various dithiocarbamate accelerators in dry rubber compounds, regarding cure characteristics, can be summarized as follows: Scorch Safety: ZDMC exhibits the longest scorch safety, followed by ZDEC, and then ZDBC. Cure Rate: ZDBC, ZDEC, and ZMDC all have similar fast cure rates.

Why are accelerators used in vulcanizing elastomers?

Accelerators are added in small amounts to speed up the curing of adhesives by reducing the cure time and temperature of elastomers, particularly latex systems. The selection of an accelerator will depend on the specific vulcanizing system and curing properties.