Evolution of the mechanical characteristics and microstructures of carbon fiber/epoxy resin composites under high-dose electron irradiation

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-03-07 DOI:10.1016/j.radphyschem.2025.112679

Huilong Liu , Yadi Xu , Duanpeng He , Yan Li , Shu Zheng , Rongxing Cao , Haoyang Xu , Dike Hu , Yiyuan Wang , Yang Liu , Yuxiong Xue

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Abstract

Due to the high specific strength, stiffness and good anti-ionizing radiation performance, carbon fiber/epoxy resin (CF/EP) composites are widely utilized in the manufacturing of spacecraft where they are exposed to high electron fields for a long time. The effect of high-dose electron irradiation, CF/EP composites was studied under irradiation doses of 1000–10000 kGy. The results indicate that the 0° tensile strength of CF/EP composites increased as the absorbed dose increased, while the 0° tensile modulus decreased with the dose. The 90° tensile strength firstly rose and then declined, while the 90° tensile modulus varied in an opposite manner. SEM and XPS were utilized to analyze the two-phase interface bonding of CF/EP before and after irradiation, as well as the changes of element free radicals and key chemical bonds. It is found that electron radiation can break C–C, C–H and other bonds and form new bonds such as C–O and CO, resulting in a competitive effect of radiation-induced crosslinking and degradation reaction.

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.