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碳纤维复合材料是一种低密度、高比强度、高比刚度,耐热、耐烧融的新材料。从七十年代初问世以来,已经得到了广泛的研究和应用,至今,仍处于迅速发展阶段中。作为结构材料使用,在复合材料的特性中,层间剪切强度是重要的。就一种树脂(聚酯、环氧、聚酰胺等)和特定碳纤维所制成的复合材料而言,其层间剪切强度主要取决于树脂与纤维两相间的粘结性能。碳纤维表面处理的根本目的,则在于改善两相间的粘结,以提高碳纤维复合材料的层间剪切强发。本文着重介绍若干表面处理方法和有关碳纤维表面特性及其对复合材料性能的影响。
Carbon fiber composite material is a new material with low density, high specific strength, high specific stiffness, heat resistance and melting resistance. Since its publication in the early 1970s, it has been widely studied and applied, and so far it is still in its rapid development stage. Used as a structural material, interlaminar shear strength is important in the properties of the composite material. In the case of composites made of a resin (polyester, epoxy, polyamide, etc.) and a specific carbon fiber, the interlaminar shear strength depends mainly on the bond between the resin and the fiber. The fundamental purpose of carbon fiber surface treatment, then lies in improving the bonding between the two phases, in order to improve the carbon fiber composite shear strength hair layer. This article focuses on several surface treatments and on the surface properties of carbon fibers and their effect on the properties of the composites.