A kind of rubber composition and preparation method thereof
A rubber composition and a technology for mixing rubber, applied in the field of rubber processing, can solve the problems of unmentioned multi-stage vulcanization, poor performance, large difference in vulcanization performance, etc., and achieve uniform distribution of cross-linking bonds, low production cost, and vulcanization temperature. Moderate effect
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Embodiment 1
[0045] Take 100 parts of Lanzhou Petrochemical nitrile rubber 3305, 10 parts of chlorinated polyethylene, put it into the open mixer and start mixing, and add 50 parts of N550 carbon black, 1 part of accelerator CZ, 3 parts of zinc oxide, 1 part of Stearic acid, after making it mix evenly, add 3 parts of phenolic resin, 2 parts of sulfur, 3 parts of tert-butyl peroxyneodecanoate successively, mix evenly in the mill with cold water cooling to obtain the rubber compound, the Put the mixed rubber into a mold and vulcanize at room temperature for 10 hours, then place it in a flat vulcanizing machine at 135°C for 20 minutes, and then place it in a flat vulcanizing machine at 155°C for 10 minutes to get the sample , the performance test results are shown in Table 1.
Embodiment 2
[0053] Take 100 parts of Lanzhou Petrochemical nitrile rubber 3305, 20 parts of chlorinated polyethylene, put them into an open mixer and start mixing, and add 100 parts of N550 carbon black, 0.5 parts of accelerator CZ, 3 parts of zinc oxide, 1 part Stearic acid, make it mix evenly, then add 5 parts of phenolic resin, 0.5 part of sulfur, 0.5 part of pivalate pivalate in turn, and mix evenly in an open mill with cold water cooling to obtain a rubber compound. Put the mixed rubber into a mold for molding, park it at room temperature for 15 hours, then place it in a flat vulcanizing machine at 140°C for 35 minutes, and then place it in a flat vulcanizing machine at 160°C for 5 minutes, that is, The samples were obtained, and the performance test results are shown in Table 1.
Embodiment 3
[0061] Take 100 parts of LG nitrile rubber 6250, 15 parts of chlorinated polyethylene, put them into an open mill and start mixing, and add 150 parts of N330 carbon black, 2 parts of accelerator CZ, 3 parts of zinc oxide, 1 part of hard Fatty acid, make it mix evenly, then add 8 parts of phenolic resin, 1 part of sulfur, and 2 parts of pivalate pivalate in turn, and mix evenly in an open mill with cold water cooling to obtain a rubber compound. Put the mixed rubber into a mold for molding, park it at room temperature for 20 hours, then place it in a flat vulcanizing machine at 145°C for 35 minutes, and then place it in a flat vulcanizing machine at 160°C for 20 minutes, namely The samples were obtained, and the performance test results are shown in Table 1.
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