1. The acid-base properties of rubber accelerator MBTS can be divided into three categories. One is an acid accelerator (represented by the letter a): including thiazole, thiophene, dithiocarbamate and xanthate; the second is an alkaline accelerator (represented by the letter b): including guanidine and ethylamine; the third is Neutral accelerators (represented by the letter N): include sulfonylsulfonamides and thioureas. According to the acid-base properties of the catalyst, it can be divided into AB, AA, BB, Na, Nb, NN, etc. But commonly used accelerators are acid-base (AB), acid (AA) and medium acid (Na).
2. According to the curing speed, accelerators can be divided into five categories. Comparisons are usually made based on the effect of accelerator M on Nr; medium speed: guanidine; quasi-overspeed: thiazole and hypoxanthine; overspeed: thiazole and hypoxanthine; overspeed: dithiocarbamate and xanthine.
Use skills:
Rubber accelerator MBTS generally chooses acidic accelerator (a) or neutral accelerator (n) as the main accelerator, namely thiazole accelerator and sulfenamide accelerator. As the main accelerator, thiuram is usually used in curing systems. As the main accelerator, dithiocarbamate is commonly used in latex products and butyl rubber. Secondary accelerators are usually primary accelerators, such as DPG and h, whose function is to activate and promote each other. When the secondary sulfonamide is used as the primary accelerator, no secondary accelerator is used. Because the accelerator can decompose accelerator M and amine compounds at curing temperature. M is an acid accelerator, and amine compounds are alkaline accelerators. In order to speed up the cure, small amounts of accelerators DPG or thiuram type accelerators can be used. The amount of accelerator DPG is usually 10% of the main accelerator. If the amount is too large, the curing speed will be reduced.
Well, the classification and use of rubber accelerator MBTS will be shared with you here. If you have any questions or want to buy, you can consult us by phone or email or directly call Henan XuanNuo Chemicals Co., Ltd. We will be happy to serve you.
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