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材料导报  2021, Vol. 35 Issue (16): 16160-16165    https://doi.org/10.11896/cldb.20030017
  高分子与聚合物基复合材料 |
不同环境因素作用下玻纤/环氧乙烯基酯复合材料的冲蚀行为
李过, 孙耀宁, 王国建, 代礼葵
新疆大学机械工程学院,乌鲁木齐 830047
Erosion Behavior of Glass Fiber/Epoxy Vinyl Ester Composites Under Different Environmental Factors
LI Guo, SUN Yaoning, WANG Guojian, DAI Likui
School of Mechanical Engineering, Xinjiang University, Urumqi 830047, China
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摘要 为探究环境因素对玻璃纤维增强环氧乙烯基酯树脂基(GF/EVE)复合材料性能的影响,对其进行了湿热和碱腐蚀老化试验,通过对不同老化时间下GF/EVE复合材料吸湿率、微观形貌、表面元素含量、表面化学结构及冲蚀失重率变化的分析,探讨了GF/EVE复合材料在湿热环境和碱腐蚀介质中的老化机理以及不同老化时间下的抗冲蚀性能变化。结果表明:随着老化时间延长,吸湿率增大,且碱性介质中的吸湿率较湿热环境大;在水分子及腐蚀介质的扩散作用下,树脂基体发生塑化、水解,纤维/基体界面出现脱黏,纤维表面腐蚀降解;同时老化造成树脂分子链断裂,交联密度降低,导致树脂初始分解温度下降;湿热和碱腐蚀老化初期冲蚀失重率分别下降了3.2%和1.8%,老化结束后分别增加了17.6%和20.8%。
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李过
孙耀宁
王国建
代礼葵
关键词:  树脂基复合材料  湿热老化  碱腐蚀  吸水率  热稳定性  冲蚀    
Abstract: In order to explore the influence of environmental factors on the properties of glass fiber reinforced epoxy vinyl ester resin-based (GF/EVE) composites, hydro-thermal and alkaline corrosion aging tests were carried out. Through the analysis of GF/EVE composite moisture absorption rate, micro-morphological appearance, surface element content, surface chemical structure and erosion weight loss rate at different aging times. The aging factor of GF/EVE composite materials in wet heat environment and alkali corrosion medium and the change of anti-erosion performance of different aging times were discussed. The results show that, with the aging time, the moisture absorption rate increased, and the environmental impact of alkaline medium was more significant. Under the diffusion of water molecules and corrosive media, the resin substrate is plasticized, hydrolysis and the fiber/base interface is de-adhesive and the fiber surface is corroded and degraded. At the same time, aging causes the resin molecular chain to break and the crosslink density to decrease, resulting in the initial decomposition temperature of the resin to decrease. The rate of erosion weight loss decreased by 3.2% and 1.8% respectively in the early stages of wet heat and alkali corrosion aging, and increased by 17.6% and 20.8% respectively after aging.
Key words:  resin composite    hydro-thermal aging    alkali corrosion    water absorption    heat stability    erosion
                    发布日期:  2021-09-07
ZTFLH:  TB332  
基金资助: 国家自然科学基金(51465055)
通讯作者:  xj_syn@126.com   
作者简介:  李过,新疆大学材料科学与工程专业硕士研究生,主要从事复合材料领域的研究。
孙耀宁,新疆大学,教授。2008年7月毕业于兰州理工大学,获材料加工工程专业博士学位。同年加入新疆大学机械工程学院工作至今,主要从事复合材料性能及表面改性等领域的研究。在国内外期刊发表文章30多篇。
引用本文:    
李过, 孙耀宁, 王国建, 代礼葵. 不同环境因素作用下玻纤/环氧乙烯基酯复合材料的冲蚀行为[J]. 材料导报, 2021, 35(16): 16160-16165.
LI Guo, SUN Yaoning, WANG Guojian, DAI Likui. Erosion Behavior of Glass Fiber/Epoxy Vinyl Ester Composites Under Different Environmental Factors. Materials Reports, 2021, 35(16): 16160-16165.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.20030017  或          http://www.mater-rep.com/CN/Y2021/V35/I16/16160
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