| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a crosslinked material of a polyol-crosslinkable fluororubber realizing low tackiness by the evaluation method II and remarkably increasing the rubber hardness. SOLUTION: The method for producing a crosslinked material of a fluororubber comprises the use of a fluororubber composition containing a polyol-crosslinkable fluororubber, a crosslinking promoter composed of a quaternary phosphonium salt and a polyol-based crosslinking agent wherein the weight ratio X of the crosslinking promoter to the polyol crosslinking agent (crosslinking promoter/polyol crosslinking agent) is 0.90-3.00, the forming of a vulcanized article by vulcanizing the fluororubber composition by heating under pressure, the application of a treating liquid obtained by dissolving the polyol-based crosslinking agent and the crosslinking promoter in a solvent to the surface of the vulcanized article and the heat-treatment of the product at 200-300°C for 1-20 hrs. COPYRIGHT: (C)2007,JPO&INPIT
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