Effect of Ultraviolet Aging on Properties of Epoxy Resin and Its Pultruded Fiber-Reinforced Composite

被引：1

作者：

Ci, Shengzong ^{[2
,4
]}

Wang, Baoming ^{[1
,3
]}

Di, Chengrui ^{[2
,4
]}

Wang, Mingyu ^{[2
]}

Zhu, Bo ^{[2
,3
,4
]}

Qiao, Kun ^{[2
,3
,4
]}

机构：

[1] Weihai Guangwei Composites Co Ltd, Weihai 264202, Peoples R China

[2] Shandong Univ, Weihai Res Inst Ind Technol, Weihai 264209, Peoples R China

[3] Shandong Univ, Shandong Key Lab Carbon Fiber & Composite Mat Manu, Weihai 264211, Peoples R China

[4] Shandong Univ, Weihai Res Inst Ind Technol, Fiber & Composite Engn Ctr, Weihai 264211, Peoples R China

来源：

POLYMERS | 2025年 / 17卷 / 03期

关键词：

polymer matrix composites (PMCs); environmental degradation; ultraviolet irradiation; mechanical properties; MECHANICAL-PROPERTIES; DEGRADATION; DAMAGE;

D O I：

10.3390/polym17030294

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polymer matrix composites (PMCs) often undergo aging as a result of ultraviolet (UV) radiation, which significantly impacts their performance and durability. This paper investigated the alterations in the microstructure and macroscopic properties of epoxy resin and its composite used in overhead wires during UV aging. Furthermore, the mechanism of UV aging for both resin and composite was revealed. The results showed that UV aging predominantly affected the properties of the surface layer resin. UV aging can induce molecular chain scission, which leads to resin weight change, color deepening, microcrack formation, a decline in mechanical properties, and other performance degradation behaviors under the combined action of many factors. With the increase in aging time, the weight change rate and hardness of the resin increased first and then decreased, while the mechanical properties of the composite decreased rapidly first and gradually tended to be constant. The bending strength and impact strength of the composite decreased by 6.0% and 12.8%, respectively, compared with the initial values. The purpose of this study is to comprehensively understand the UV aging behaviors of epoxy resins and their composites employed in overhead wires, and it also provides essential data for advancing the utilization and durability of epoxy resins and composites across aerospace, marine, and other outdoor applications.

引用

页数：15

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