In-situ thermal Raman mapping and stress analysis of CNT/CF/epoxy interfaces

IF 5.7 3区材料科学 Q2 Materials Science New Carbon Materials Pub Date : 2024-08-01 DOI:10.1016/S1872-5805(24)60874-7

Jing-zong He, Shi Chen, Zheng-kun Ma, Yong-gen Lu, Qi-lin Wu

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Abstract

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 °C. The interfacial bonding between CNT/CF and the matrix and the stress distribution and changes during heat treatment (20–100 °C) were investigated in detail. This work is important for studying thermal stress in fiber-reinforced composites by in-situ thermal Raman mapping technology.

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CNT/CF/epoxy 界面的原位热拉曼绘图和应力分析

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。我们采用电泳沉积法制造了碳纳米管/碳纤维（CF）混合纤维。通过在树脂中分散作为拉曼传感介质（CNTR）的 CNT，对 CF/epoxy 和 CNT/CF/epoxy 复合材料的界面性能进行了统计调查和比较。通过捕捉不同温度下 CNTR 在环氧树脂中的 G'带位置分布，可以模拟相关的局部热应力变化。研究发现，随着温度的升高，G'带向低位置移动，在 100 °C 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（20-100 °C）过程中的应力分布和变化。这项工作对于利用原位热拉曼图谱技术研究纤维增强复合材料中的热应力具有重要意义。

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来源期刊

New Carbon Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.10

自引率

8.80%

发文量

3245

审稿时长

5.5 months

期刊介绍： New Carbon Materials is a scholarly journal that publishes original research papers focusing on the physics, chemistry, and technology of organic substances that serve as precursors for creating carbonaceous solids with aromatic or tetrahedral bonding. The scope of materials covered by the journal extends from diamond and graphite to a variety of forms including chars, semicokes, mesophase substances, carbons, carbon fibers, carbynes, fullerenes, and carbon nanotubes. The journal's objective is to showcase the latest research findings and advancements in the areas of formation, structure, properties, behaviors, and technological applications of carbon materials. Additionally, the journal includes papers on the secondary production of new carbon and composite materials, such as carbon-carbon composites, derived from the aforementioned carbons. Research papers on organic substances will be considered for publication only if they have a direct relevance to the resulting carbon materials.