碳纳米管改性乳液上浆剂对炭纤维复合材料界面性能的影响

曹莉娟; 杨禹; 吕春祥

碳纳米管改性乳液上浆剂对炭纤维复合材料界面性能的影响

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: 山西省基础研究计划项目(2013011011-5).

详细信息

作者简介:
曹莉娟,硕士.E-mail:caolj1985@126.com.

通讯作者:
杨禹,博士,副研究员.E-mail:yangyv2003@sxicc.ac.cn.

中图分类号: TQ342⁺.74
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- 文章访问数: 614
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- 被引次数: 0
出版历程
- 收稿日期: 2016-02-10
- 录用日期: 2016-04-21
- 修回日期: 2016-03-28
- 刊出日期: 2016-04-28

A sizing agent modified with carbon nanotubes used for the production of carbon fiber/bisphenol A epoxy composites

National Engineering Laboratory for Carbon Fiber Technology, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

Funds: Basic Research Project of Shanxi Province(2013011011-5).

摘要

摘要: 采用碳纳米管改性环氧树脂乳液上浆剂和未改性上浆剂对聚丙烯腈(PAN)基炭纤维进行表面上浆。通过激光粒度仪研究两种乳液的稳定性。采用扫描电子显微镜(SEM)、X-射线光电子能谱仪(XPS)与原子力显微镜(AFM)研究未改性及改性上浆炭纤维的表面结构,并用HM410界面评价装置研究炭纤维复合材料的界面性能。结果表明,碳纳米管改性后,乳液稳定性得到提高。上浆后,炭纤维表面粗糙度增加73.1%,同时接触角减小11.9%,且炭纤维表面的含氧官能团含量增加45.96%。此外,改性炭纤维复合材料的界面性能得到明显改善。当碳纳米管在上浆剂中质量分数为0.75 wt%时,炭纤维单丝的界面剪切强度较之未改性炭纤维提高14.7%。
- 炭纤维 /
- 碳纳米管 /
- 上浆剂 /
- 界面性能
Abstract: An emulsion made by mixing carbon nanotubes(CNTs), epoxy, Tween-80 and Span-60 was used as a sizing agent of carbon fibers(CFs) used to prepare CF/bisphenol A epoxy composites. The effects of the CNT modification on the stability of the emulsion, surface morphology and composition of the CFs, the contact angle of bisphenolA epoxy on the CFs and the interfacial shear strength of the composites were investigated by SEM, XPS, AFM and mechanical tests. Results indicate that the stability of the CNT-modified emulsion against sedimentationis better than the unmodified one. The surface roughness of the CFs is increased by 73.1%, the contact angle is reduced by 11.9%, and the number of surface oxygen functional groups on the CFs is increased by 45.96% compared with those without CNT modification. The interfacial shear strength of the composite with an optimized CNT content of 0.75 wt% is 14.7% higher than that without CNTs.
- Carbon fibers /
- Carbon nanotube /
- Sizing /
- Interfacial performance

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