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VULCANIZATION ACCELERATORS. Organic accelerators are mainly used to reduce the reaction time of rubber vulcanization or usage of vulcanizing agent and we are supplying thiuram series with very fast vulcanization speed, sulfenamide series with relatively fast speed, and guanidine series with medium speed.
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The accelerators can be further classified as primary and secondary accelerators. The primary accelerators are typically used at 0.5 to 1.5 phr. The vulcanization speed of these system can range from slow to ultra fast depending on composition and type of accelerator.
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Vulcanization & Accelerators
- Use of Piperidine accelerator- Germany. 1911 ; New Molecules - Use of aldehyde-amine & HMT as accelerators in USA & UK ; 1914-15 . Amine Accelerators - Use of Zn-Alkyl Xanthates accelerators in Russia. 1919-20 ; New Molecules - Use of Thiurams & Dithiocarbamates -Germany. “ Speed Control - Effect of ZnO on cure rate, discovery of DPG, MBT
Common Vulcanization Accelerators
Vulcanization Accelerator. is a compound that increases the speed of vulcanization and that enables vulcanization to proceed at lower temperature and with greater efficiency. Vulcanization accelerators can be classified as primary and secondary accelerators. Important primary accelerators include thiazoles and sulfenamides.