suppliers of iran rubber vulcanizing accelerator zmbt powder
suppliers of iran rubber vulcanizing accelerator zmbt powder
suppliers of iran rubber vulcanizing accelerator zmbt powder
suppliers of iran rubber vulcanizing accelerator zmbt powder
suppliers of iran rubber vulcanizing accelerator zmbt powder
  • 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.
  • What is zinc salt (ZMBT) used for?
  • Zinc salt (ZMBT) is used mainly with latex compounds. Relatively long activation time. Good resistance to aging. Used alone or in combination with others (premixed products are available). Very fast with basic accelerators such as HMT. All combinations are synergistic. In CR, MBT and MBTS act as retarders. Rate of cure: MBT>ZMBT >MBTS
  • Which elastomers can be vulcanized?
  • Certain elastomers such as chloroprene can be vulcanized by the action of metal oxides such as zinc oxide as well as sulfur. As a result, several of the same accelerators that are used with sulfur vulcanization systems can be used with zinc oxide/neoprene systems. Because there are so many, accelerators are generally classified by chemical family.
  • What determines vulcanization rate?
  • The accelerator determines the rate of vulcanization, whereas the accelerator to sulfur ratio dictates the efficiency of vulcanization and, in turn, the thermal stability of the resulting vulcanizate. Certain elastomers such as chloroprene can be vulcanized by the action of metal oxides such as zinc oxide as well as sulfur.

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