Constructing a new tear-resistant skin for aramid fiber to enhance composites interfacial performance based on the interfacial shear stability

被引：16
作者：
Cheng, Zheng [1 ,2 ]
Li, Xin [1 ]
Lv, Junwei [1 ]
Liu, Yang [1 ]
Liu, Xiangyang [1 ]
机构：
[1] Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat & Engn, Chengdu 610065, Peoples R China
[2] Nankai Univ, Coll Mat Sci & Engn, Tianjin 300071, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2021年 / 544卷
基金：
中国国家自然科学基金;
关键词：
Aramid fiber; Composites interfacial properties; Shear stability; Fiber skin; Tear resistance; MECHANICAL-PROPERTIES; SURFACE MODIFICATION; DIRECT FLUORINATION; GRAPHENE OXIDE; POLYDOPAMINE; INTERPHASE; STRENGTH; MATRIX; IMPROVEMENT; ADHESION;
D O I：
10.1016/j.apsusc.2021.148935
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The enhancement of aramid fiber's interfacial performance is vital to the overall composites properties. In this study, the composites interfacial shear stability is raised as a new factor that greatly affects the composites interfacial performance. Based on this, a new skin is constructed for aramid fiber on top of its old skin to improve its interfacial shear stability. Compared with the old skin, this new skin exhibits significant lower orientation along fiber axial direction. This endows fiber skin with highly improved tear resistance, so that the interfacial shear stability is greatly enhanced. Specially, the final composites interfacial properties show a strong correlation with the skin's tear resistance, and the interfacial failure mode changes from the tearing of high-oriented old skin to neat fracture of this low-oriented new skin, confirming the remarkable effect of interfacial shear stability. Moreover, with further "extension strategies", the final IFSS value could achieve 59.65 MPa, 75.3% higher than the original fiber.
引用
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页数：12
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