Ti3C2Tx-MXene sizing agent surface modified high modulus carbon fiber and its epoxy resin matrix composites interface properties

被引：0
|
作者：
Dong Y. [1 ]
Zhang X. [1 ]
Tian Y. [1 ]
Huang L. [1 ]
机构：
[1] Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education, Beijing University of Chemical Technology, Beijing
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2022年 / 39卷 / 08期
关键词：
composite; high modulus carbon fiber; interfacial properties; sizing agent; Ti[!sub]3[!/sub]C[!sub]2[!/sub]T[!sub]x[!/sub]-MXene;
D O I：
10.13801/j.cnki.fhclxb.20210918.001
中图分类号：
学科分类号：
摘要：
In order to improve the surface wettability of high modulus carbon fibers (HMCF) and enhance the interfacial properties of their composites, a few-layer Ti3C2Tx-MXene aqueous dispersion with a size of 100-500 nm was mixed with an aqueous epoxy emulsion to prepare an Ti3C2Tx-MXene modified sizing agent for HMCF by mechanical blending method. The continuous sizing technology was used to construct a characteristic coating rich in Ti3C2Tx-MXene on the surface of HMCF in order to improve the interface bonding of HMCF/epoxy resin (EP) composites. The surface morphology, surface chemical state and surface wettability of HMCF were characterized by SEM, XPS and dynamic contact angle test, and the interface bonding of HMCF/EP composites was analyzed and characterized by interlaminar shear strength (ILSS) and cross-sectional morphology tests. Finally, the interface enhancement mechanism of Ti3C2Tx-Mxene/EP sizing agent-modified HMCF/EP composites was investigated with the shear damage models of the composites. The results show that after the surface treatment with Ti3C2Tx-MXene modified sizing agent, the O/C (atomic ratio) of the HMCF surface is increased, and a certain amount of nano-scale convex micromechanical structures are introduced to improve the surface wettability of HMCF. When the solid content of the epoxy emulsion sizing agent is 0.8% and the concentration of Ti3C2Tx-MXene is 1.0 mg/mL, the ILSS of the HMCF/EP composites increases by 23.8% to 85.9 MPa. © 2022 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
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页码：3712 / 3722
页数：10
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