| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluorinated rubber composition yielding a cross-linked product having an improved pressure-resistant compressive permanent set characteristic at a high temperature of 200°C or above.SOLUTION: The provided fluorinated rubber composition is obtained by mixing, with 100 pts.wt. of a peroxide-cross-linkable fluorine-containing rubber, 1-50 pts.wt. of a plant-derived porous carbon powder, 1-10 pts.wt. of an organic peroxide cross-linking agent, and no more than 10 pts.wt. of a polyfunctional unsaturated compound co-cross-linking agent. This fluorine-containing rubber composition is capable, by virtue of the use thereby of the plant-derived porous carbon powder in place of reinforcements or fillers used in the prior art such as carbon black or Austin Black, etc., of increasing the blending ratio of the carbon powder to approximately 4 times the blending ratio of carbon black used in the prior art and of accordingly yielding a cross-linked product not only realizing electric effects but also having a significantly improved pressure-resistant compressive permanent set characteristic at a high temperature of 200°C or above. |
