单丝拉伸断裂法探究上浆剂改性炭纤维与聚碳酸酯的界面黏结性

姚婷婷; 吴刚平; 刘玉婷; 宋红艳

单丝拉伸断裂法探究上浆剂改性炭纤维与聚碳酸酯的界面黏结性

姚婷婷^1,2,3,
吴刚平^1,2,3,,
刘玉婷^1,3,
宋红艳^1,3

1.
中国科学院山西煤炭化学研究所, 中国科学院炭材料重点实验室, 山西太原 030001;
2.
中国科学院大学, 材料与光电研究中心, 北京 100049;
3.
中国科学院山西煤炭化学研究所, 碳纤维制备技术国家工程实验室, 山西太原 030001

基金项目: 国家自然科学基金委-中石油联合基金项目（U1362107）；国家自然科学基金委-山西煤基低炭联合基金项目（U1810116）.

详细信息

作者简介:
姚婷婷,硕士研究生.E-mail:yaotingting@sxicc.ac.cn

通讯作者:
吴刚平,博士,研究员.E-mail:wgp@sxicc.ac.cn

中图分类号: TQ342⁺.74
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- 被引次数: 0
出版历程
- 收稿日期: 2018-12-05
- 录用日期: 2019-02-20
- 修回日期: 2019-01-22
- 刊出日期: 2019-02-28

Research on the interfacial adhesion properties of carbon fibers modified by sizing agents to polycarbonate using a single-filament fragmentation test

YAO Ting-ting^1,2,3,
WU Gang-ping^{1,2,3
,},
LIU Yu-ting^1,3,
SONG Hong-yan^1,3

1.
CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
3.
National Engineering Laboratory for Carbon Fiber technology, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

Funds: National Natural Science Foundation of China(U1362107); National Natural Science Foundation of China & Shanxi Coal-based Low-carbon Corporation (U1810116).

摘要

摘要: 为了探究不同上浆剂对炭纤维/聚碳酸酯复合材料界面黏结性的影响，采用自制水性聚碳酸酯乳液、聚醋酸乙烯酯乳液、聚氨酯乳液与聚乙烯乳液等上浆剂对炭纤维进行表面改性。采用红外光谱（IR）和热重-质谱联用（TG-MS）仪分析上浆剂的化学结构；采用扫描电子显微镜（SEM）、X射线光电子能谱仪（XPS）与热重分析仪（TG）等研究上浆改性炭纤维的表面结构。为了量化地分析炭纤维与聚碳酸酯的界面剪切强度，采用单丝拉伸断裂法得到界面剪切强度。结果表明，水性聚氨酯乳液上浆改性后的炭纤维与聚碳酸酯的界面剪切强度最高（29.19 MPa），这是由于聚氨酯中含有较多的氨酯键，可与树脂形成较多的氢键。相对而言，水性自制乳液与聚醋酸乙烯酯乳液涂层后的炭纤维与聚碳酸酯之间只有物理吸附作用，因此界面黏结性略弱。
- 炭纤维 /
- 聚碳酸酯 /
- 上浆剂 /
- 界面性 /
- 单丝拉伸断裂
Abstract: The effects of different sizing agents on the interfacial adhesion between carbon fibers and polycarbonate were investigated using a home-made polycarbonate emulsion, and polyvinyl acetate, polyurethane and polyethylene aqueous emulsions as the sizing agents. The chemical structures of the sizing agents were characterized by FT-IR and TG-MS, the surface characteristics of the modified carbon fibers by SEM, XPS and TGA, and the interfacial shear strength (IFSS) between the coated carbon fibers and the polycarbonate by a single-filament fragmentation test. Results showed that IFSS decreased in the following order:polyurethane (29.19 MPa) > polyvinyl acetate (22.58 MPa) > self-made (20.36 MPa) > polyethylene (14.52 MPa). Hydrogen bonds contribute the most to the interfacial adhesion forces while polar interaction contributes less and dispersion forces the least. The highest IFSS using polyurethane is ascribed to the formation of hydrogen bonds at the interface.
- Carbon fibers /
- Polycarbonate /
- Sizing agents /
- Interfacial adhesion /
- Single filament fragmentation test

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