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

材料导报

2019, Vol. 33

Issue (10): 1762-1767 https://doi.org/10.11896/cldb.18040130

高分子与聚合物基复合材料

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

杨洁¹, 吴宁¹, 潘月秀², 朱世鹏², 焦亚男¹, 陈利¹

1 天津工业大学纺织科学与工程学院复合材料研究所,先进纺织复合材料教育部重点实验室,天津 300387
2 航天材料及工艺研究所,北京100076

Impact of Epoxy Modified Waterborne Polyurethane Sizing Agent on Interfacial Properties of Carbon Fiber/Cyanate Ester Resin Composite

YANG Jie¹, WU Ning¹, PAN Yuexiu², ZHU Shipeng², JIAO Yanan¹, CHEN Li¹

1 Key Laboratory of Advanced Textile Composites of Ministry of Education, Institute of Textile Composites, School of Textile Science and Engineering,Tianjin Polytechnic University, Tianjin 300387
2 Aerospace Research Institute of Materials & Processing Technology, Beijing 100076

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摘要使用自行合成的环氧改性水性聚氨酯(EWPU)上浆剂对碳纤维进行表面处理,主要研究了EWPU上浆剂对碳纤维表面及碳纤维/氰酸酯树脂复合材料界面性能的影响。采用扫描电镜(SEM) 、傅里叶红外光谱(FTIR) 、X射线光电子能谱(XPS)和静态接触角等表征方法对比研究了二次上浆处理前碳纤维(CF)和处理后碳纤维(MCF)的表面形貌、表面化学元素组成和浸润性的变化,并通过单纤维破碎实验和短梁剪切法,研究了EWPU上浆剂对碳纤维/氰酸酯树脂复合材料界面力学性能的影响。结果表明,经EWPU上浆处理后碳纤维表面O/C值增加了39.13%,表面活性官能团的含量增加了14.97%,碳纤维与树脂的初始和稳态接触角分别减小了19.41%和20.59%,碳纤维/氰酸酯树脂复合材料的单丝界面剪切强度和层间剪切强度分别增加了13.42%和14.29%。

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关键词: 环氧改性水性聚氨酯上浆剂二次上浆氰酸酯树脂碳纤维复合材料界面性能

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

发布日期: 2019-05-16

ZTFLH:

TB332

基金资助: 国家高技术研究发展计划(863 计划) 项目(2015AA03A202);国家自然科学基金(51403153);天津市高等学校创新团队项目(TD13-5043)

通讯作者: wuning@tjpu.edu.cn

作者简介: 杨洁,天津工业大学在读硕士研究生,研究方向为高性能纤维的表面与界面和纺织复合材料,以第一作者在国内期刊上发表了3篇论文,在校期间荣获学业一等奖学金,并被评为优秀共青团员和三好学生。吴宁,天津工业大学副研究员,硕士研究生导师,入选2014年“天津市‘131’ 创新型人才培养工程第三层次”人才项目。2010年博士毕业于江南大学,同年任教于天津工业大学复合材料研究所。读博期间(2008—2009)以联合培养博士生身份在美国佐治亚理工学院进修。于2015—2016年,在加拿大英属哥伦比亚大学先进纤维材料实验室进行访问、合作研究。以第一作者和通讯作者在国内外学术期刊上发表论文40余篇,申请国家发明专利7项,其中授权3项。主要研究方向包括复合材料层间功能化构建;高性能纤维的表面与界面;纺织复合材料;同种聚合物复合材料等。主持包括国家自然科学基金青年项目、天津市科技计划项目和企业委托国防军工项目等。

引用本文:

杨洁, 吴宁, 潘月秀, 朱世鹏, 焦亚男, 陈利. 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[J]. 材料导报, 2019, 33(10): 1762-1767.
YANG Jie, WU Ning, PAN Yuexiu, ZHU Shipeng, JIAO Yanan, CHEN Li. Impact of Epoxy Modified Waterborne Polyurethane Sizing Agent on Interfacial Properties of Carbon Fiber/Cyanate Ester Resin Composite. Materials Reports, 2019, 33(10): 1762-1767.

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

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