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The heatproof water unsaturated polyester resin constituent, use this resin mixture ones and the formation item null of lamination
The heatproof water unsaturated polyester resin constituent, use this resin mixture ones and the formation item null of lamination
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机译:耐热水不饱和聚酯树脂成分,使用该树脂混合物与形成的层压项目无效
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摘要
PROBLEM TO BE SOLVED: To provide a hot-water-resistant unsaturated polyester resin composition which, in an open-mold process of FRP, can reduce the twining of glass fibers around a defoaming roll even after a time elapsed in lamination and defoaming operations without deterioration of the hot-water resistance and mechanical strengths; a resin mixture for lamination containing the same; and a molded item obtained from the mixture.;SOLUTION: The resin composition is prepared by dissolving (A) 40-80 pts.wt. unsaturated polyester prepared by reacting essential reactants consisting of 15-45 mol% dicyclopentadiene, 15-45 mol% propylene glycol, and 25-55 mol% at least one acid selected from maleic acid, maleic anhydride, and fumaric acid in (B) 60-20 pts.wt. crosslinking monomer, the sum of components A and B being 100 pts.wt. The resin mixture is prepared by dispersing 0.1-10 pts.wt. inorganic thixotropic agent in the resin composition of 100 pts.wt. and mixing the resulting dispersion with 0.01-1.2 pts.wt. hydroxyl-terminated 1,4- polybutadiene. The molded item is obtained from the resin mixture.;COPYRIGHT: (C)2001,JPO
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