Study on the Aging Behavior and Mechanisms of Polyolefin Elastomer Encapsulation Films under Different Accelerated Aging Conditions

Wen-yue Zhuo; Zi-ye Yang; Tong Zhao; Yan-hua Niu; Guang-xian Li

doi:10.11777/j.issn1000-3304.2026.26012

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Study on the Aging Behavior and Mechanisms of Polyolefin Elastomer Encapsulation Films under Different Accelerated Aging Conditions

Research Article | 更新时间：2026-07-08

- Study on the Aging Behavior and Mechanisms of Polyolefin Elastomer Encapsulation Films under Different Accelerated Aging Conditions
- Acta Polymerica Sinica Vol. 57, Issue 7, Pages: 1526-1536(2026)
- 作者机构：
  
  四川大学高分子科学与工程学院先进高分子材料全国重点实验室成都 610065
- 作者简介：
  
  Yan-hua Niu, E-mail: yhniu@scu.edu.cn
  Guang-xian Li, E-mail: guangxianli@scu.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2026.26012
  CLC：
- CSTR：32057.14.GFZXB.2026.7594
- Received：18 February 2026，
  
  Accepted：27 March 2026，
  
  Online First：17 June 2026，
  
  Published：20 July 2026
- 稿件说明：
移动端阅览
卓文越, 杨子夜, 赵桐, 牛艳华, 李光宪. 不同加速老化条件下聚烯烃弹性体封装膜的老化行为和机理研究. 高分子学报, 2026, 57(7), 1526-1536.

Zhuo, W. Y.; Yang, Z. Y.; Zhao, T.; Niu, Y. H.; Li, G. X. Study on the aging behavior and mechanisms of polyolefin elastomer encapsulation films under different accelerated aging conditions. Acta Polymerica Sinica (in Chinese), 2026, 57(7), 1526-1536.
卓文越, 杨子夜, 赵桐, 牛艳华, 李光宪. 不同加速老化条件下聚烯烃弹性体封装膜的老化行为和机理研究. 高分子学报, 2026, 57(7), 1526-1536. DOI： 10.11777/j.issn1000-3304.2026.26012. CSTR： 32057.14.GFZXB.2026.7594.

Zhuo, W. Y.; Yang, Z. Y.; Zhao, T.; Niu, Y. H.; Li, G. X. Study on the aging behavior and mechanisms of polyolefin elastomer encapsulation films under different accelerated aging conditions. Acta Polymerica Sinica (in Chinese), 2026, 57(7), 1526-1536. DOI： 10.11777/j.issn1000-3304.2026.26012. CSTR： 32057.14.GFZXB.2026.7594.

摘要

采用多种室内加速老化实验研究了聚烯烃弹性体(POE)封装膜在热氧、湿热、氙灯、碘镓灯等条件下的老化行为，探索了POE封装膜对不同老化因子的敏感程度. 通过表征力学性能、交联度、光学性能、热稳定性、表面形貌、化学结构，评价了老化前后宏观性能和微观结构的变化，对比分析了不同老化条件下POE的老化机理和助剂析出行为. 研究发现热氧条件下存在氧化降解与后交联的竞争，导致宏观性能无明显变化；光氧老化对分子链的降解有显著的加速作用，低辐照度的氙灯老化后氧化降解最严重，高辐照度的碘镓灯老化后分子链大量断裂. 环境温度和湿度影响着材料基体中的小分子助剂析出能力，高温高湿条件下助剂析出现象更加明显，从而影响了材料的抗老化能力.

Abstract

A variety of indoor accelerated aging experiments were con

ducted to study the aging behavior of polyolefin elastomer (POE) encapsulation films under conditions such as thermal oxygen

damp heat

xenon lamps

and iodized gallium lamps

and to explore the sensitivity of POE encapsulation films to different aging factors. By characterizing the changes in mechanical properties

crosslinking degree

optical properties

thermal stability

surface morphology

chemical structure

etc

the changes in macroscopic properties and microstructure before and after aging were evaluated. The aging mechanism and additive precipitation behavior of POE under different aging conditions were compared and analysed. It was found that under thermal oxygen conditions

there is a competition between oxidative degradation and post-crosslinking

resulting in no significant change in macroscopic properties. Photo-oxidative aging showed a significant accelerating effect on the degradation of molecular chains. Xenon lamps with low irradiation showed the most severe oxidative degradation after aging

while iodized gallium lamps with high irradiation led to the break of molecular chains after aging. The temperature and humidity of the environment affected the precipitation ability of small-molecule additives in the material matrix. Under high-temperature or high-humidity conditions

the precipitation phenomenon of additives was more obvious

thereby affecting the anti-aging ability of the material.

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