环氧改性水性聚氨酯上浆剂对碳纤维/氰酸酯树脂复合材料界面性能的影响

doi:10.11896/cldb.18040130

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Abstract Carbon fiber was surface treated by synthesized epoxy-modified waterborne polyurethane (EWPU) sizing agent. The effect of EWPU sizing agent on the surface of carbon fiber and the interfacial properties of the carbon fiber/cyanate ester resin composites were investigated. Specifically, the surface morphology, surface chemical element composition and infiltration of the carbon fiber(CF) and secondary sizing modified carbon fiber (MCF) were characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscope (FTIR), X-ray photoelectron spectroscopy (XPS) and static contact angle measurement. In addition, the effects of EWPU sizing agent on the mechanical properties of carbon fiber/cyanate resin composites were analyzed by single-fiber fragmentation test and short beam shear method. After the EWPU sizing treatment, the surface of carbon fiber exhibited a increase of 39.13% in O/C value and a increase of 14.97% in the content of active functional group, respectively. There were 19.41% and 20.59% decrease in the initial and steady contact angles of carbon fiber and resin, respectively. In addition, carbon fiber/cyanate resin composite presented 13.42% and 14.29% increment in the monofilament interface shear strength and interlaminar shear strength, respectively.

Key words： epoxy modified water-based polyurethane sizing agent secondary sizing cyanate ester resin carbon fiber composites interface performance

Published: 16 May 2019

CLC number:

TB332

Fund:This work was financially supported by the National High Technology Research and Development Program (2015AA03A202),the Natural Science Foundation of China (51403153) and Tianjin University Innovation Team Project (TD13-5043).

About author:: Jie Yang, a graduate student at Tianjin University of Technology, researching the surface and interface of high-performance fibers and textile composite materials. She published three papers in domestic journals as the first author. She won the first-class scholarship and was honored as the Excellent Communist Youth League Member and the Three Good Students during the school.
Ning Wu obtained his Ph.D. degree from Jiangnan University in 2010. He is currently an associate research professor and master supervisor in Institute of Composite Materials, Tianjin Polytechnic University. He was selected for “Tianjin ‘131’ innovative personnel training project level three” in 2014. He performed collaborative research in 2008—2009 in GATECH (Georgia Institute of Technology) in the USA as a joint-training PhD candidate. During 2015—2016, he awarded the funding from
the China scholarship council to do research work in Advanced Composite Material Laboratory in USB (University of British Columbia) in Canada. He has published more than 40 journal papers as first author or corresponding author, applied 7 national invention patents and 3 of them were authorized. His research interests focus on Interlayer functional construction of composite materials, the surfaces and interfaces of high performance fiber, textile compo-site material, single polymer composite. In recent years, he has hosted Natio-nal Natural Science Foundation project, Tianjin Science and Technology project and national defense military projects.

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	YANG Jie
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Cite this article:

YANG Jie,WU Ning,PAN Yuexiu, et al. Impact of Epoxy Modified Waterborne Polyurethane Sizing Agent on Interfacial Properties of Carbon Fiber/Cyanate Ester Resin Composite[J]. Materials Reports, 2019, 33(10): 1762-1767.

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http://www.mater-rep.com/EN/10.11896/cldb.18040130 OR http://www.mater-rep.com/EN/Y2019/V33/I10/1762

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