Abstract Achieving high strength in fiber reinforced structural composites requires effective load transfer between the high-performance fiber reinforcement, e.g., carbon nanotube (CNT) yarn, and the matrix. Various processing approaches to enhance the interaction between CNT fiber and the matrix were investigated. The apparent interfacial shear strengths (IFSS) of pristine CNT yarns, post-treated CNT yarns (cross-linked, functionalized, and polymer incorporation by resistive heating), and pre-infiltrated polymer/CNT composite fibers measured using single fiber pull-out tests were used to screen the efficacy of the processing methods. Pristine CNT yarns had a low apparent IFSS ( 20 MPa). Improved wet-out of the fiber eliminated the dry-core shear failure mode.

中文翻译：

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碳纳米管纤维改性：表观界面剪切强度与失效模式的相关研究

摘要 要获得纤维增强结构复合材料的高强度，需要在高性能纤维增强材料（例如碳纳米管 (CNT) 纱线）和基体之间进行有效的载荷转移。研究了增强碳纳米管纤维与基体之间相互作用的各种加工方法。使用单纤维拉拔测试测量原始 CNT 纱线、后处理的 CNT 纱线（交联、功能化和通过电阻加热掺入聚合物）和预渗透聚合物/CNT 复合纤维的表观界面剪切强度 (IFSS)用于筛选处理方法的功效。原始 CNT 纱线具有低表观 IFSS (20 MPa)。改进的纤维浸润消除了干芯剪切失效模式。