Rubber will undergo polymer backbone cleavage and cross-linking network destruction under high temperature or hot oxygen strip, or further communication will occur, making the rubber hard and brittle, and the mechanical properties will be reduced. Therefore, the heat-resistant rubber plate that works in a high-temperature environment for a long time is mostly processed by using low-unsaturated butyl rubber, EPDM rubber, or chlorinated butyl rubber containing halogen elements in the molecular side chain, and ethylene propylene rubber is used to produce heat-resistant rubber plate, effectively reducing the cost of raw materials.
1. Butyl rubber/butyl reclaimed rubber is used to produce a vulcanization formula for heat-resistant rubber sheets
70 parts of butyl rubber, 30 parts of butyl reclaimed rubber, 4.5 parts of zinc oxide, 1 part of stearic acid, 4 parts of protective wax, 50 parts of carbon black N660, 25 parts of carbon black N770, 3 parts of petroleum jelly, 0.5 parts of accelerator M, 1.5 parts of accelerator PZ, 0.5 parts of accelerator TL, 1 part of sulfur; Total 191 copies.
2. Butyl rubber/butyl reclaimed rubber/EPDM rubber is used together to produce a vulcanized formula for heat-resistant rubber sheets
35 parts of butyl rubber, 35 parts of butyl reclaimed rubber, 30 parts of EPDM rubber, 4.5 parts of zinc oxide, 1 part of stearic acid, 3 parts of paraffin, 40 parts of carbon black N330, 10 parts of carbon black N660, 20 parts of clay, 20 parts of heavy calcium carbonate, 7 parts of naphthenic oil, 4 parts of petroleum jelly, 0.5 parts of accelerator M, 1.5 parts of accelerator PZ, 0.5 parts of accelerator TL, 1 part of sulfur; A total of 213 copies.
3. Butyl rubber/butyl reclaimed rubber is used to produce a vulcanized formula for heat-resistant sponge rubber sheets
80 parts of butyl rubber, 20 parts of butyl reclaimed rubber, 9 parts of zinc oxide, 9 parts of stearic acid, 9 parts of paraffin, 55 parts of talc, 30 parts of clay, 30 parts of naphthenic oil, 1.5 parts of accelerator DM, 1.5 parts of accelerator TMTD, 1.5 parts of accelerator ZDC, 2 parts of sulfur, 4 parts of foaming agent H; Total 252.5 copies.
When using butyl reclaimed rubber to reduce the production cost of heat-resistant rubber sheets, the formula design directly affects the processing performance of the rubber compound and the heat resistance of the finished product, including the vulcanization system, the reinforcing filling system, the softening plasticization system, and the synergistic effect of other compounding agent E4LYY611. Strictly control the production process parameters of heat-resistant rubber sheets, especially the mixing process and vulcanization process, to further improve the comprehensive performance of heat-resistant rubber sheets containing butyl reclaimed rubber. In the follow-up, the editor will share with you the key points of the formula design and production process of heat-resistant rubber board for the production of butyl reclaimed rubber.
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