Thiazoles

- Mar 13, 2019-

This is an earlier variety of organic accelerators. It is an acid promoter. It is characterized by high vulcanization activity and can impart good aging resistance and fatigue resistance to vulcanizates. Therefore, it is widely used in the rubber industry and consumes a lot of money. The main varieties are as follows. (1) 2 thiol benzothiazole The trade name is accelerator M. This product is light yellow powder, tastes extremely bitter, non-toxic, and stable in storage. It is a general-purpose accelerator, which has a rapid promoting effect on natural rubber and diene general synthetic rubber. The vulcanization flatness is good, the critical temperature of vulcanization is 125 ° C, and there is a possibility of encephalitis burning during mixing. It is easy to disperse in rubber and does not pollute, but it is not suitable for rubber products for food. The amount used as the first accelerator is 1 to 2 parts, and the amount of the second accelerator is 0.2 to 0.5 parts. It can also be used as a peptizer for natural rubber. (2) Dibenzothiazole disulfide The trade name is DM. This product is light yellow powder, bitter, non-toxic and stable during storage. Its properties and uses are similar to those of M, but the critical temperature for vulcanization is 130 °C. The activity above 140 °C is increased, the after-effect is better, and the vulcanization operation is safe. Often used with other accelerators to increase its activity.

 

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