| 摘要: |
| 将动态热机械分析(DMA)技术应用于非水反应高聚物材料动态黏弹特性研究中，设计并制作了非水反应高聚物材料的DMA试验模具，解决了精确测定非水反应高聚物材料温度谱和频率谱的关键试验问题；分析了非水反应高聚物材料频率谱，研究了其黏弹特性随频率和密度的变化规律并探讨了相关机理，并研究了高聚物材料的高、低温性能，对比分析了非水反应高聚物材料在浸泡条件与非浸泡条件下的黏弹特性差异，给出了浸泡条件下其储能模量、损耗因子与密度和频率的函数关系式.研究表明：非水反应高聚物材料是一种耐热性和耐寒性均良好的工程材料，在非水环境下该材料的黏弹性受频率(大于20Hz)影响较大，在水环境下受密度的影响较大，在工程应用上需引起注意. |
| 关键词: 非水反应高聚物材料 动态热机械分析 动态黏弹特性 储能模量 损耗因子 |
| DOI：103969/j.issn.1007 9629202006019 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(51909243)；中国博士后面上基金资助项目(2018M632803)；河南省高等学校重点科研项目计划(18A570002)；河南省科技攻关项目（202102310293） |
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| Dynamic Viscoelastic Property of Non water Reacted Polymer Materials Based on Dynamic Thermomechanical Analysis |
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LI Jia, CHEN Shuo, ZHANG Jingwei, WANG Julong
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School of Hydraulic Science and Engineering, Zhengzhou University, Zhengzhou 450002, China
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| Abstract: |
| Dynamic thermomechanical analysis(DMA) was used to study the dynamic viscoelastic properties of non water reacted polymer materials. The moulds for DMA tests of non water reacted polymer materials were designed and prepared. The important problems for accurately testing viscoelastic properties of non water reacted polymer materials were solved. Then frequency and temperature spectra of non water reacted polymer materials were analyzed and the changing rules of the variation of frequency and density for dynamic viscoelastic properties were studied. Also high and low temperature properties and engineering applicability of polymer materials were researched. Meanwhile the difference of dynamic viscoelastic properties with water or without water was contrasted, the functional relations of storage modulus and loss factor with density and frequency were also obtained. The results show that non water reacted polymer material is an engineering material with good thermal conservation and cold resistant abilities. The viscoelasticity of the material is greatly affected by the frequency(greater than 20 Hz) without water, and in water environment is greatly affected by density, which should arouse adequate attention in engineering application. |
| Key words: non water reacted polymer material dynamic thermomechanical analysis dynamic viscoelastic property storage modulus loss factor |
