Cloth cloth rubber plate is a large category of rubber plate, which requires the rubber material to have good wear resistance, anti-aging and processing performance, and is generally processed with natural rubber and styrene-butadiene rubber as the main raw materials; The appropriate amount of tire reclaimed rubber can effectively reduce the cost of raw materials for cloth cloth clipping rubber sheets. How much tire reclaimed rubber is suitable for mixing in the cloth grain laminate? Does the formula of the laminated rubber sheet with reclaimed rubber need to be adjusted?
1. Natural rubber/tire reclaimed rubber and vulcanization formula for the production of cloth cloth clip rubber sheet
50 parts of natural rubber, 50 parts of tire reclaimed rubber, 2.5 parts of zinc oxide, 1 part of stearic acid, 1 part of antioxidant D, 36 parts of light calcium, 38 parts of heavy calcium, 15 parts of carbon black N774, 3 parts of engine oil, 8 parts of pine tar, 0.75 parts of accelerator DM, 0.4 parts of accelerator M, 0.15 parts of accelerator TMTD, 1.2 parts of sulfur; Total 207 copies.
2. The role of natural rubber and tire reclaimed rubber in cloth grain rubber sheet
Natural rubber has high mechanical strength, good elasticity, wear resistance, flexural resistance, etc., and can provide good basic properties for cloth cloth rubber sheets, such as elasticity, tensile strength, wear resistance, E4LYY924 and other performance characteristics. Tire reclaimed rubber has the basic characteristics of rubber, the main components are natural rubber, synthetic rubber and carbon black, good compatibility with natural rubber, and natural rubber combined with the production of cloth cloth cloth rubber plate can not only reduce the cost of raw materials, but also improve the performance of rubber processing technology, reduce heat generation, reduce scorch and natural rubber vulcanization and return to the original tendency, improve the aging resistance of the finished product.
3. Natural rubber/tire reclaimed rubber and use the formula design of cloth pattern clip cloth rubber sheet
(1) Vulcanization system: natural rubber and tire reclaimed rubber are used together to produce cloth texture rubber sheets, which can be used in combination with a variety of accelerators, and the amount of sulfur is controlled among 1-2.5 parts, and the accelerator M and accelerator D are used together, or a small amount of accelerator TMTD is added to adjust the vulcanization speed, improve the cross-linking efficiency, and improve the wear resistance and aging resistance of the cloth cloth rubber board.
(2) Reinforcing filling system: When the cloth pattern sandwich rubber plate produced with natural rubber as the main raw material is mixed with tire reclaimed rubber to reduce costs, carbon black is used to reinforce and improve the wear resistance and strength of the rubber material, such as carbon black N774; Calcium carbonate, clay, barite powder and other fillings are used to reduce production costs and maintain the volume stability of the rubber compound.
(3) Softening system: When using tire reclaimed rubber to reduce the production cost of natural rubber cloth cloth clip rubber sheet, the appropriate use of softeners, such as engine oil, coumaron resin, etc., can improve the process and adjust the hardness of the rubber compound.
The appropriate amount of tire reclaimed rubber is used in the cloth clip rubber sheet, and it is necessary to select the appropriate variety of reclaimed rubber according to the use scenario, physical property requirements, cost budget and other aspects of the rubber sheet, reasonably determine the mixing ratio of the reclaimed rubber, and adjust the formula appropriately to meet the performance requirements of the cloth cloth rubber board for elasticity, mechanical strength, wear resistance, aging resistance, etc., while further reducing the production cost.
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