Natural rubber has excellent elasticity and resilience, and is widely used in the manufacture of various rubber sealing products such as sealing strips, gaskets, and sealing rings. In order to reduce the cost of raw materials, latex reclaimed rubber can be used to replace natural rubber in the formulation of general sealant compounds with natural rubber as the main raw material. When the general sealant is prepared by using latex reclaimed rubber, the reasonable design of the vulcanization formula can not only reduce the cost, but also improve the processing technology performance of the rubber compound and the aging resistance of the finished product, and meet the rubber sealing products with different hardness requirements.
1. Latex reclaimed rubber prepares 40 degree general sealing compound vulcanization formula
100 parts of latex reclaimed rubber, 2 parts of zinc oxide, 1.6 parts of stearic acid, 0.25 parts of antioxidant D, 1.5 parts of carbon black N774, 10 parts of light calcium, 3.2 parts of petroleum jelly, 1.6 parts of glycerin, 0.24 parts of accelerator DM, 0.48 parts of accelerator M, 1.5 parts of sulfur; Total: 122.37 shares.
2. Latex reclaimed rubber prepares 50 degree general sealant vulcanization formula
100 parts of latex reclaimed rubber, 4 parts of zinc oxide, 1.2 parts of stearic acid, 0.8 parts of antioxidant A, 0.8 parts of paraffin, 8 parts of carbon black N330, 16 parts of carbon black N774, 50 parts of light calcium, 19 parts of engine oil, 6.5 parts of black ointment, 8 parts of pine tar, 0.15 parts of accelerator DM, 2 parts of sulfur; total: 216.45 parts.
3. Latex reclaimed rubber prepares 60 degree general sealant vulcanization formula
100 parts of latex reclaimed rubber, 4 parts of zinc oxide, 1.2 parts of stearic acid, 0.9 parts of antioxidant D, 12 parts of carbon black N774, 90 parts of light calcium, 3.2 parts of petroleum jelly, 0.16 parts of accelerator D, 0.4 parts of accelerator M, 1.6 parts of sulfur; Total: 213.46 parts.
4. Latex reclaimed rubber prepares 70 degree general sealant vulcanization formula
100 parts of latex reclaimed rubber, 4 parts of zinc oxide, 2 parts of stearic acid, 0.8 parts of antioxidant A, 0.8 parts of paraffin, 20 parts of carbon black N330, 16 parts of carbon black N774, 20 parts of light calcium, 8 parts of magnesium carbonate, 1.6 parts of pine tar, 0.16 parts of accelerator D, 0.8 parts of accelerator M, 2 parts of sulfur; total: 176.16 shares.
Latex reclaimed rubber is processed from natural rubber waste rubber cup glue wire, waste natural rubber products, waste latex products such as latex gloves as the main raw materials, with the basic performance characteristics of natural rubber E4LYY34, high elasticity, strength, tear resistance, wear resistance, electrical insulation, aging resistance is better than natural rubber, good compatibility with natural rubber, can replace natural rubber in any proportion to prepare general sealant compounds, effectively reduce the cost of raw materials and save industrial and electrical costs under the premise of ensuring product quality.
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