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利用XPS研究了瞬时高温空气氧化法和气液双效法表面处理炭纤维的表面氧含量和含氧官能团的变化。表明,经表面处理后,炭纤维表明氧含量增加。羧基减少,但羰基或羟基的增加增强了CFRP界面的粘结情况,提高了CFRP的层间剪切强度。并对上述两种方法进行了比较。发现羟基是增强CFRP界面粘结强度的主要基因;羰基可能是增强CFRP断裂韧性的基因。
XPS was used to study the surface oxygen content and oxygen-containing functional groups of instantaneous high temperature air oxidation and gas-liquid double-effect surface treatment of carbon fibers. Show that, after surface treatment, carbon fiber shows that the oxygen content increased. The carboxyl group decreases, but the increase of carbonyl group or hydroxyl group enhances the bonding of CFRP interface and increases the interlaminar shear strength of CFRP. The two methods are compared. Hydroxyl groups were found to be the major genes that enhance the bond strength of CFRP interface. Carbonyl groups may be the genes that enhance the fracture toughness of CFRP.