| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a liquid addition-curable silicone rubber composition for a fluororesin coated roll which bonds a fluorine based coating agent or a fluororesin based tube to a silicone rubber or bonds a metallic core bar to the silicone rubber to make peeling hard to occur even in a long-term use, and a fixing roll having a silicone rubber layer composed of a cured product of the composition. SOLUTION: The liquid addition-curable silicone rubber composition for a fluororesin coated fixing roll comprises (a) 100 pts.wt. organopolysiloxane having at least two alkenyl groups bonded to the silicon atom in the middle of the molecular chain in the molecule, (b) an organohydrogenpolysiloxane having at least two hydrogen atoms directly bonded to the silicon atom in the molecule in an amount for the molar ratio of the hydrogen atom bonded to the silicon atom in component (b) to the alkenyl group bonded to the silicon atom in component (a) to come to 0.4-5.0, (c) an effective amount of a platinum family catalyst, (d) 0.1-10 pts.wt. dry process silica, and (e) 0.05-5 pts.wt. cyclic diorganopolysiloxane containing at least three alkenyl groups bonded to the silicon atom in the molecule.</p> |
