| 摘要 |
PURPOSE:To obtain a rubber compsn. with excellent adhesiveness with fluorinated rubbers by compounding an epichlorohydrin rubber with Ca(OH)2, specified undecene deriv., a phenol resin and an epoxy compd. CONSTITUTION:100 pts.wt. epichlorohydrin rubber is compounded with 0.5-30 pts.wt. Ca(OH)2, 0.1-5 pts.wt. 1,8-diazabicyclo-(5,4,0)-undecene-7 or its weak acid salt, 0.1-8 pts.wt. phenol resin and 0.1-10 pts.wt. epoxy compd. The obtd. compsn. exhibits extremely excellent adhesiveness with fluorinated rubbers and the interface of adhesion is durable after immersion in a warm fuel oil or heat-aging for a long time. Therefore, this compsn. is extremely effective for such uses as a fuel hose wherein the inner liq.-contacting part is constituted of a fluorinated rubber with excellent resistance to sour gasoline and the outer face is constituted of an epichlorohydrin rubber with excellent aging resistance, gasoline-absorbing resistance and gasoline resistance. |
