| 老化对风电叶片用环氧树脂性能的影响 |
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| 引用本文： | 卢 敏,唐先贺.老化对风电叶片用环氧树脂性能的影响[J].湖南工业大学学报,2011,25(4):33-36. |
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| 作者姓名： | 卢 敏 唐先贺 |
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| 作者单位： | 1. 湖南工业大学包装新材料与技术重点实验室,湖南株洲,412007
2. 株洲时代新材料科技股份有限公司,湖南株洲,412007 |
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| 摘 要： | 采用差式扫描量热法、红外光谱分析法、静态力学分析法测试了树脂浇注体老化前后的玻璃化转变温度Tg和力学强度参数,并对环氧树脂浇注体的老化机理进行了分析。结果表明:经240 h湿热和盐雾老化后力学强度参数值和Tg都下降了,而经240 h冷热循环老化后力学强度参数值和Tg均有所提高。老化机理分析表明:湿热和盐雾老化后,树脂浇铸体由于水分子的浸入,产生了增塑效果,导致力学性能和Tg下降;而冷热老化后,树脂发生后固化反应,分子链交联密度进一步增大,因此,力学性能和T g均提高。
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| 关 键 词： | 环氧树脂 老化 力学性能 玻璃化转变温度 |
| 收稿时间： | 4/8/2011 12:00:00 AM |
Effects of Aging on Properties of Epoxy Resin for Wind Turbin Blade |
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| Lu Min and Tang Xianhe.Effects of Aging on Properties of Epoxy Resin for Wind Turbin Blade[J].Journal of Hnnnan University of Technology,2011,25(4):33-36. |
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| Authors: | Lu Min and Tang Xianhe |
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| Affiliation: | Lu Min1,Tang Xianhe2(1.Key Laboratory of New Materials and Technology for Packaging,Hunan University of Technology,Zhuzhou Hunan 412007,China,2.Zhuzhou Times New Materials Technology Co.,Ltd,China) |
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| Abstract: | By means of DSC, FITR and static mechanic tests, determined the glass transition temperature Tg and mechanical properties of epoxy resin castings before and after aging. The results showed that the mechanical properties and Tg decreased after 240 h hydrothermal aging and salt-spray test, while after 240 h thermal circulation aging, the mechanical properties and Tg increased. The aging mechanism analysis showed that after hydrothermal aging and salt-spray aging, Tg and mechanical properties decreased owing to the plasticization caused by water molecules immersion, while after thermal circulation aging, the Tg and mechanical properties increased because of cross-linking density caused by post-curing. |
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| Keywords: | epoxy resin aging mechanical properties glass transition temperature |
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