嫁接
材料科学
复合材料
极限抗拉强度
粘附
硅烷
扫描电子显微镜
抗弯强度
相(物质)
表面改性
润湿
纤维
分层(地质)
化学
化学工程
有机化学
聚合物
生物
工程类
俯冲
古生物学
构造学
作者
Jiqiang Hu,Fei Li,Bing Wang,Hanqi Zhang,Chunming Ji,Shixun Wang,Zhengong Zhou
标识
DOI:10.1016/j.compositesb.2020.107966
摘要
Abstract Due to low activity and poor wettability, the fiber-matrix interface is weak area, which seriously affects the mechanical properties of fiber reinforced polymer (FRP) composites. This paper focuses on the improvement of the interfacial adhesion of carbon fiber fabric reinforced polyphenylene sulfide (CF/PPS) composites. A two-step combination strategy, including liquid-phase oxidation and grafting of silane coupling agents (SCAs), is developed to modify CF surfaces. The tensile strength, flexural strength and interlaminar shear strength (ILSS) of CF/PPS composites with modified CFs increased by 5.96%, 36.18% and 21.73%, respectively. And the enhancement mechanism of the modification method established is revealed. Scanning electron microscope (SEM) morphologies on fractured surfaces showed that predominant failure mechanisms changed from interface debonding to deformation and break of matrix. This indicates that this modification method is effective for promoting the interface bonding and enhancing the mechanical performances of CF/PPS composites, showing potential for industrialization.
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