标题：Effect of a multiscale reinforcement by carbon fiber surface treatment with graphene oxide/carbon nanotubes on the mechanical properties of reinforced carbon/carbon composites
作者：Gao, Bo; Zhang, Ruliang; He, Maoshuai; Sun, Lingchao; Wang, Chengguo; Liu, Lei; Zhao, Lifen; Cui, Hongzhi; Cao, Aiping
作者机构：[Gao, Bo; Zhang, Ruliang; He, Maoshuai; Sun, Lingchao; Liu, Lei; Zhao, Lifen; Cui, Hongzhi; Cao, Aiping] Shandong Univ Sci & Technol, Sch Mat Sci & En 更多
通讯作者地址：[Zhang, RL]Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Peoples R China;[Wang, CG]Shandong Univ, Sch Mat Sci & Engn, Carbon Fiber 更多
来源：COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
关键词：Carbon fiber; Mechanical properties; Interface/interphase; Surface; treatments
摘要：An effective carbon fiber/graphene oxide/carbon nanotubes (CF-GO-CNTs) multiscale reinforcement was prepared by co-grafting carbon nanotubes (CNTs) and graphene oxide (GO) onto the carbon fiber surface. The effects of surface modification on the properties of carbon fiber (CF) and the resulting composites was investigated systematically. The GO and CNTs were chemically grafted on the carbon fiber surface as a uniform coating, which could significantly increase the polar functional groups and surface energy of carbon fiber. In addition, the GO and CNTs co-grafted on the carbon fiber surface could improve interlaminar shear strength of the resulting composites by 48.12% and the interfacial shear strength of the resulting composites by 83.39%. The presence of GO and CNTs could significantly enhance both the area and wettability of fiber surface, leading to great increase in the mechanical properties of GO/CNTs/carbon fiber reinforced composites. (C) 2016 Elsevier Ltd. All rights reserved.