| 摘要 |
PROBLEM TO BE SOLVED: To provide a rapidly curable sheet molding compound which has a proper gel time and can reduce the molding cycle time by shortening the time from the gel time to the completion of curing. SOLUTION: The sheet molding compound comprises a fiber substrate impregnated with an unsaturated polyester resin composition comprising an unsaturated polyester resin, polymerizable monomers, a curing agent, a shrinkage-reducing agent, a polymerization inhibitor, a filler and a thickening agent, where the curing agent comprises t-amyl peroxybenzoate and t-amyl peroxyisononanoate. Preferably, the mixing ratio by weight of t-amyl peroxybenzoate to t-amyl peroxyisononanoate is 95/5 to 20/80. COPYRIGHT: (C)2005,JPO&NCIPI
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