| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fiber-reinforced thermoplastic resin that is excellent in mechanical properties such as tensile strength, flexural rigidity and the like, thermal dimensional stability, surface appearance, durability and impact resistance of a molded article of the thermoplastic resin by improving adhesion of a fiber for resin reinforcement to a thermoplastic resin and dispersibility of the fiber in the thermoplastic resin in general use and at a low cost. <P>SOLUTION: An organic fiber for resin reinforcement is produced by applying a treating agent including (A) a polyfunctional epoxy compound having at least three epoxy groups in one molecule, (B) a polyurethane resin-based emulsion (except (C) a reactive polyurethane resin emulsion as given hereinafter), (C) a reactive polyurethane resin emulsion and (D) rubber latex to the surface of an organic fiber in an amount of 1 to 20 wt.% based on the amount of organic fiber and has (B)/(C) (a weight ratio in terms of solids) in the range of 90/10 to 50/50, ≪(A)/ä(B)+(C)}≫ (a weight ratio in terms of solids) in the range of 1/99 to 30/70, and ≪ä(A)+(B)+(C)}/(D)≫ (a weight ratio in terms of solids) in the range of 80/20 to 95/5. The fiber-reinforced thermoplastic resin is composed mainly of (α) the organic fiber for resin reinforcement and (β) a thermoplastic resin and has a mixing ratio by weight of (α) to (β) of 1/99 to 70/30. <P>COPYRIGHT: (C)2013,JPO&INPIT |
