| 喷涂聚脲弹性体材料人工老化性能试验研究 |
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| 引用本文： | 李敬玮,赵波,瞿杨,孙志恒.喷涂聚脲弹性体材料人工老化性能试验研究[J].水利水电技术,2010,41(2). |
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| 作者姓名： | 李敬玮 赵波 瞿杨 孙志恒 |
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| 作者单位： | 中国水利水电科学研究院,结构材料研究所,北京,100038;水利部水工程建设与安全重点实验室,北京,100038 |
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| 摘 要： | 通过人工热空气老化试验及湿热老化试验,研究了喷涂聚脲材料的热老化和湿热老化性能,并采用动力学经验公式回归方法和Arrhenius外推法,以拉伸强度为考察指标、老化系数为0.5作为寿命临近值,对聚脲材料在热和湿热两种条件下的工程使用寿命进行了预测研究。试验结果表明,喷涂聚脲材料具有很好的热老化和湿热老化性能,并从分子结构方面对此进行了说明。试验预测结果表明,喷涂聚脲材料可以满足通常水利工程湿热条件下对材料使用寿命的要求。
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| 关 键 词： | 喷涂聚脲弹性体 热老化 湿热老化 寿命预测 水利工程 |
Study on artificial accelerated aging test of spray polyurea elastomer |
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| LI Jing-wei,ZHAO Bo,QU Yang,SUN Zhi-heng.Study on artificial accelerated aging test of spray polyurea elastomer[J].Water Resources and Hydropower Engineering,2010,41(2). |
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| Authors: | LI Jing-wei ZHAO Bo QU Yang SUN Zhi-heng |
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| Affiliation: | LI Jing-wei1,2,ZHAO Bo1,QU Yang1,SUN Zhi-heng1,2(1.Department of Structure , Materials,IWHR,Beijing 100038,China,2.Key Laboratory of Hydraulic Engineering Construction , Safety of MWR,China) |
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| Abstract: | Based on the relevant accelerated thermal aging and hydrothermal aging tests,both the thermal and the hydrothermal aging performances of the spray polyurea elastomer are studied herein,and then with the regression method of dynamic empirical equation and Arrhenius equation,the working lives of the material under the thermal and the hydrothermal conditions are predicted by taking tensile strength as the investigation index and the aging coefficient of 0.5 as the critical value of the working life.The test re... |
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| Keywords: | spray polyurea elastomer thermal aging hydrothermal aging working life hydropower project |
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