| 摘要 |
PURPOSE: A rubber composition for an automotive weather strip joint is provided to ensure excellent compression set and noise durability, to improve aging caused by a high temperature environment, coating and antifouling properties. CONSTITUTION: A rubber composition for an automotive weather strip joint comprising silicon-EPDM copolymers or silicon rubber as a basic polymer includes carbon black 1~50 phr, talc 1~20 phr, processing oil 5~25 phr, cross-linking agent 0.5~3 phr, crosslinking promotor 0.5~2 phr, crosslinking activator 1~7 phr and antiaging agent 2~10 phr based on the basic polymer 100.0 phr. The composition further comprises a foaming agent 1~10 phr. The antioxidant is 2-mercaptobenziomidazole or 2,2'-methylene bis(4-methyl-6-tertbutylphenol).
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