| 水工环氧防护修补材料应力松弛性能研究 |
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| 引用本文： | 赵波,李敬玮,鲁一晖. 水工环氧防护修补材料应力松弛性能研究[J]. 水利水电技术, 2011, 42(11): 107 |
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| 作者姓名： | 赵波 李敬玮 鲁一晖 |
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| 作者单位： | (中国水利水电科学研究院水利部水安全重点实验室，北京100038) |
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| 摘 要： | 对实验室研制的水工环氧防护材料的蠕变和应力松弛行为进行了试验研究。采用DMTA测试确定材料的起始弹性模量为1. 41 GPa，结合蠕变实验结果，采用双推迟时间Kelvin模型和标准线性固体模型，通过Laplace变换得到了材料的应力松弛函数。结果表明:在一20℃条件下，标准线性固体模型得到的结果接近于双推迟时间的Kelvin模型结果，但较宽温度范围内Kelvin模型更接近于材料的实际物理状态。试验结果表明该环氧修补材料在低温情况下具有较好的力学松弛性能。
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| 关 键 词： | 环氧修补材料 蠕变 应力松弛 Kelvin模型 标准线性固体模型 |
Study of stress relaxation behavior of hydraulic engineering epoxy resin repairing material |
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| ZHAO Bo,LI Jingwei,LU Yihui. Study of stress relaxation behavior of hydraulic engineering epoxy resin repairing material[J]. Water Resources and Hydropower Engineering, 2011, 42(11): 107 |
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| Authors: | ZHAO Bo LI Jingwei LU Yihui |
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| Affiliation: | (Key Laboratory of Hydraulic Engineering Construction and Safety of MWR, China Institute of Water Resources and Hydmpower Research, Beijing 100038，China) |
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| Abstract: | An experimental study is made on the creep and stress relaxation behavior of the hydraulic engineering epoxy resin repairing material developed in laboratory of IWHR.The material initial elastic modulus of 1.41 GPa is determined for the material by the testing of DMTA(Dynamic Mechanical Thermal Analysis) and the stress relaxation function of the material is obtained through the Laplace transform based on the Kelvin model along with the double retardation time and standard linear solid model.The result shows... |
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| Keywords: | epoxy resin repairing material creep stress relaxation Kelvin model standard linear solid model |
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