| 聚乙烯膜料老化抗裂模型试验研究 |
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| 引用本文： | 李改琴,李学军,王春草. 聚乙烯膜料老化抗裂模型试验研究[J]. 辽宁工程技术大学学报(自然科学版), 2009, 28(2) |
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| 作者姓名： | 李改琴 李学军 王春草 |
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| 作者单位： | 1. 杨凌职业技术学院,陕西,杨凌,712100
2. 西安.产灞生态区管委会,陕西,西安,710024 |
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| 基金项目： | 国家自然科学基金，陕西省教育厅科研计划项目 |
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| 摘 要： | 为研究解决渠道防渗聚乙烯(PE)膜料的冻融老化问题,依据薄膜理论对PE水压力变形及应力应变模型进行了数学推导.在室内冻融老化条件下对PE抗拉、抗裂性能分别进行了对比试验.研究表明,冻融老化100次循环后PE的性能均有所降低.用圆形中心变位模型模拟了PE冻融老化抗裂强度与鼓包高度关系曲线,经检验模拟曲线与观测曲线基本吻合.表明该模型可用于PE抗裂强度或变形计算,为PE应用于渠道防渗设计提供了理论依据.
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| 关 键 词： | 聚乙烯(PE) 冻融 老化试验 抗裂强度 |
Research on model of aging crack resistance of PE film |
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| LI Gaiqin,LI Xuejun,WANG Chuncao. Research on model of aging crack resistance of PE film[J]. Journal of Liaoning Technical University (Natural Science Edition), 2009, 28(2) |
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| Authors: | LI Gaiqin LI Xuejun WANG Chuncao |
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| Affiliation: | 1.Yangling Vocational and Technical College;Yangling 712100;China;2.The Administrative Committee of Xi'an Chanba Ecological District;Xi'an 710024;China |
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| Abstract: | In order to solve the freeze-thaw ageing problem of the PE film used in canal lining,based on the thin film theory,the film deformation under water pressure and stress-strain model were deducted.The aging tensile strength and crack resistance of PE was tested.The results show that PE aging performance are decreased.With the circle mathematical model,the relationship between breaking resistance and deformation height was simulated and is proved that the curve of simulation accords with the observation curve.... |
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| Keywords: | PE film freeze-thaw aging test breaking resistance |
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