碳纳米管/炭纤维/环氧树脂界面的原位热拉曼成像与应力分析OA北大核心CSTPCD
In-situ thermal Raman mapping and stress analysis of CNT/CF/epoxy interfaces
研究纤维增强复合材料的界面行为和内部热应力分布对于评估其性能和可靠性至关重要.采用电泳沉积(EPD)技术制造了碳纳米管(CNT)/炭纤维(CF)混合纤维.将CNT作为拉曼传感介质(CNTR)分散在环氧树脂(epoxy)中,对CF/epoxy和CNT/CF/epoxy复合材料的界面性能进行了分析.通过捕捉不同温度下CNTR在环氧树脂中的G'带位置分布,高度模拟了相关的局部热应力变化.研究发现,随着温度的升高,G'波段向较低的波段位置移动,在100 ℃时达到2.43 cm-1的最大差异.详细研究了 CNT/CF与基体之间的界面结合以及热处理过程(100 ℃)中的应力分布和变化.这对利用原位热拉曼成像技术研究纤维增强复合材料中的热应力具有重要的参考价值.
A study of the interfacial behavior and internal thermal stress distribution in fiber-reinforced composites is essential to assess their performance and reliability.CNT/carbon fiber(CF)hybrid fibers were constructed using electrophoretic deposition.The interfacial properties of CF/epoxy and CNT/CF/epoxy composites were statistically investigated and compared using in-situ thermal Raman mapping by dispersing CNTs as a Raman sensing medium(CNTR)in a resin.The associated local thermal stress changes can be simulated by capturing the G'band position distribution of CNTR in the epoxy at different temperatures.It was found that the G'band shifted to lower positions with increasing temperature,reaching a maximum difference of 2.43 cm-1 at 100 ℃.The interfacial bonding between CNT/CF and the matrix and the stress distribution and changes during heat treatment(20-100 ℃)were investig-ated in detail.This work is important for studying thermal stress in fiber-reinforced composites by in-situ thermal Raman mapping technology.
何敬宗;陈师;马政坤;吕永根;吴琪琳
东华大学材料科学与工程学院,纤维材料改性国家重点实验室,上海 201620
化学工程
热拉曼成像应力分布炭纤维碳纳米管界面
Thermal Raman mappingStress distributionCarbon fiberCarbon nanotubeInterface
《新型炭材料（中英文）》 2024 (004)
703-714 / 12
This work was financially supported by the ma-jor project of the National Natural Science Founda-tion of China(52090033/52090030)and the Funda-mental Research Funds for the Central Universities(CUSF-DH-T-2024002). 国家自然科学基金(52090033/52090030);高层次拔尖创新人才专项基金(CUSF-DH-T-2024002).
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