There is a difference between the two products, DM is made of M polymerization, D is actually double, 2 M molecules polymerization. When used as an accelerator, DM has less time and slower vulcanization speed. Processing is relatively easy to control. From the application point of view, relatively complex will use DM, very simple processing can be used directly with M. Of course, this is not very absolute, mainly depends on the individual factory's own formula and process. To a certain extent, it can be replaced, but it is difficult to generalize under other conditions are unchanged.
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