Analysis of the Mechanical Properties and Damage Mechanism of Carbon Fiber/Epoxy Composites under UV Aging.
Analysis of the Mechanical Properties and Damage Mechanism of Carbon Fiber/Epoxy Composites under UV Aging.
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DOI：
10.3390/ma15082919
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发表时间：
2022-04-16
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影响因子：
--
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中科院分区：
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碳纤维复合材料的紫外线耐久性一直是人们关注的问题。在这项工作中，紫外线照射碳纤维增强聚合物（CFRP）材料进行了使用人工加速紫外线老化室，以研究紫外线暴露对碳纤维复合材料的影响。紫外线老化导致表面树脂上的一些大分子链断裂，导致小分子损失和质量损失。紫外光辐照80 d后，试样的宏观力学性能在纵向上出现明显下降，纵向抗压强度下降幅度最大，达23%，横向力学性能在老化后期也有下降趋势。使用纳米压痕的CFRP试样的微观力学性能，其特征在于，它被发现，UV老化的基体上的脆化效应，其硬度/模量值高于初始值与UV曝光。纤维受紫外线照射的影响较小。
The UV durability of carbon fiber composites has been a concern. In this work, UV irradiation on carbon fiber-reinforced polymer (CFRP) materials was performed using an artificial accelerated UV aging chamber to investigate the effect of UV exposure on carbon fiber composites. UV aging caused some of the macromolecular chains on the surface resin to break, resulting in the loss of small molecules and loss of mass. After 80 days of UV irradiation exposure, a significant decline in the macroscopic mechanical properties occurred in the longitudinal direction, with the largest decrease of 23% in longitudinal compressive strength and a decreasing trend in the transverse mechanical properties at the later stage of aging. The microscopic mechanical properties of the CFRP specimens were characterized using nanoindentation, and it was found that UV aging had an embrittlement effect on the matrix, and its hardness/modulus values were higher than the initial values with UV exposure. The fibers were less affected by UV irradiation.
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影响因子：
8.4
作者：
Babu, Libin K.;Mishra, Kunal;Singh, Raman P.
通讯作者：
Singh, Raman P.
影响因子：
5.4
作者：
Ding, Junliang;Cheng, Li
通讯作者：
Cheng, Li
DOI：
10.1016/j.jiec.2012.01.011
发表时间：
2012-05-25
影响因子：
6.1
作者：
Choi, Sung-Seen;Kim, Jong-Chul
通讯作者：
Kim, Jong-Chul
影响因子：
3.3
作者：
Batista, Natassia Lona;Magalhaes de Faria, Maria Candida;Botelho, Edson Cocchieri
通讯作者：
Botelho, Edson Cocchieri
影响因子：
4.5
作者：
Goel, A.;Chawla, K. K.;Dean, D. R.
通讯作者：
Dean, D. R.