Study on the UV aging resistance of ZnO‐modified epoxy resin by experiments and MD simulation

IF 3.2 4区工程技术 Q2 ENGINEERING, CHEMICAL

Polymer Engineering and Science Pub Date : 2024-09-09 DOI:10.1002/pen.26957

Hao Zhang, Xiaocheng Chu, Qingjun Ding, Gai Zhao, Huafeng Li

引用次数: 0

Abstract

This study investigates the impact of zinc oxide nanoparticles on epoxy resin systems and the ultraviolet (UV) aging resistance of modified epoxy resin composites using molecular dynamics (MD) simulations and experimental methods. Initially, various epoxy resin cross‐linking models are established through MD simulations to understand the influence of different nano ZnO contents on resin modification, further validated by experiments. Subsequently, the UV radiation resistance of nano ZnO–epoxy resin composites is assessed by subjecting them to high‐intensity UV radiation equivalent to 3 years of natural environmental conditions, analyzing changes in tensile properties, impact performance, hardness, and glass transition temperature of epoxy resin before and after UV radiation exposure. The findings suggest that the addition of nano zinc oxide reduces the impact of UV radiation on epoxy resin, with optimal UV radiation resistance observed at a nano zinc oxide mass fraction of 0.3 wt%.

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通过实验和 MD 模拟研究氧化锌改性环氧树脂的抗紫外线老化性能

本研究采用分子动力学（MD）模拟和实验方法研究了纳米氧化锌对环氧树脂体系的影响以及改性环氧树脂复合材料的抗紫外线（UV）老化性能。首先，通过 MD 模拟建立了各种环氧树脂交联模型，以了解不同纳米 ZnO 含量对树脂改性的影响，并进一步通过实验进行验证。随后，将纳米 ZnO-环氧树脂复合材料置于相当于 3 年自然环境条件下的高强度紫外线辐射下，评估其抗紫外线辐射性能，分析紫外线辐射前后环氧树脂的拉伸性能、冲击性能、硬度和玻璃化转变温度的变化。研究结果表明，添加纳米氧化锌可降低紫外线辐射对环氧树脂的影响，纳米氧化锌的质量分数为 0.3 wt%时，抗紫外线辐射性能最佳。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymer Engineering and Science 工程技术-高分子科学

CiteScore

5.40

自引率

18.80%

发文量

329

审稿时长

3.7 months

期刊介绍： For more than 30 years, Polymer Engineering & Science has been one of the most highly regarded journals in the field, serving as a forum for authors of treatises on the cutting edge of polymer science and technology. The importance of PE&S is underscored by the frequent rate at which its articles are cited, especially by other publications - literally thousand of times a year. Engineers, researchers, technicians, and academicians worldwide are looking to PE&S for the valuable information they need. There are special issues compiled by distinguished guest editors. These contain proceedings of symposia on such diverse topics as polyblends, mechanics of plastics and polymer welding.