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    • 5. 发明授权
    • Carbon fiber prepreg, and a production process thereof
    • 碳纤维预浸料及其制造方法
    • US06117551A
    • 2000-09-12
    • US125124
    • 1998-08-11
    • Hideo NagataNobuyuki OdagiriTakeshi TerashitaHajime KishiShoji Yamane
    • Hideo NagataNobuyuki OdagiriTakeshi TerashitaHajime KishiShoji Yamane
    • B29B11/16B29B15/10C08J5/24C08L63/00B32B5/16B32B9/06B32B31/20
    • C08J5/24B29B15/105C08L63/00B29K2307/00C08J2363/00C08J2477/00C08J2481/06Y10T428/24994Y10T428/254Y10T428/30Y10T428/31511Y10T428/31551
    • The present invention relates to a carbon fiber prepreg. The carbon fiber prepreg of the present invention is characterized in that a carbon fiber bundle comprising a plurality of continuous carbon filaments and having a hook drop value of 10 cm or more as the degree of fiber entanglement is impregnated with a base resin mainly composed of a thermosetting resin, and that particles of 150 .mu.m or less in particle size made of a thermoplastic resin account for 20 wt % or less based on the weight of the entire prepreg and distributed at a higher concentration in the surface zone than in the inside. The carbon fiber prepreg of the present invention is good in tackiness and less changing in tackiness with the lapse of time, and can form a composite with an excellent compression interlaminar shear strength (CILS) at high temperature after moisture absorption while maintaining good impact resistance. It also allows the production of a composite very higher than the conventional composite in the compressive strength (LCS) of a cross laminated panel. The carbon fiber prepreg of the present invention can be preferably used as a structural member in such areas as aerospace area, sporting area and civil engineering and architecture area.
    • PCT No.PCT / JP97 / 04642 Sec。 371日期:1998年8月11日 102(e)日期1998年8月11日PCT 1997年12月16日PCT公布。 第WO98 / 26912号公报 日期:1998年6月25日本发明涉及一种碳纤维预浸料。 本发明的碳纤维预浸料的特征在于,将包含多个连续碳纤丝并且具有10cm以上的钩滴值作为纤维缠结度的碳纤维束浸渍在主要由 热可塑性树脂,由热塑性树脂制成的粒径为150μm以下的粒子相对于整个预浸料坯的重量为20重量%以下,分散在表面区域的浓度高于内部。 本发明的碳纤维预浸料随着时间的推移粘合性和粘合性变化小,能够在保持良好的耐冲击性的同时,在高温下形成具有优异的压缩层间剪切强度(CILS)的复合体。 它还允许在交叉层压板的抗压强度(LCS)中生产比常规复合材料高得多的复合材料。 本发明的碳纤维预浸料可以优选用作航空航天领域,体育用地,民用建筑领域等的结构构件。