| 聚氨酯胶粘剂的动态流变行为研究 |
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| 引用本文： | 孙晓微,杜庆丽,李家臻,张晨.聚氨酯胶粘剂的动态流变行为研究[J].中国胶粘剂,2012(6):10-13. |
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| 作者姓名： | 孙晓微 杜庆丽 李家臻 张晨 |
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| 作者单位： | 北京化工大学碳纤维及功能高分子教育部重点实验室;广东国望精细化学品有限公司 |
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| 基金项目： | 广东省省部产学研结合项目专项资金资助(2010B090400221) |
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| 摘 要： | 采用HAAKE旋转流变仪及旋辑黏度计研究了聚氨酯(PU)胶粘剂的非牛顿性、黏流活化能及松弛时间谱。结果表明:PU胶粘剂属于假塑性流体;PU胶粘剂预聚物的黏度及其温度敏感性是与聚合物的氢键密度相关的,氢键密度越高,黏流活化能越大,温度敏感性越强;探讨了PU胶粘剂预聚物的松弛时间谱及其影响因素,其测试结果对掌握复膜过程中胶液的流动性具有理论指导意义。
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| 关 键 词： | 聚氨酯 胶粘剂 预聚物 非牛顿性 活化能 松弛时间谱 |
Study on dynamic rheology of polyurethane adhesive |
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| Sun Xiaowei,Du Qingli,Li Jiazhen,Zhang Chen.Study on dynamic rheology of polyurethane adhesive[J].China Adhesives,2012(6):10-13. |
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| Authors: | Sun Xiaowei Du Qingli Li Jiazhen Zhang Chen |
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| Affiliation: | 1 (1.The Key Laboratory of Carbon Fiber and Functional Polymers,Ministry of Education,Beijing University of Chemical Technology,Beijing 100029,China;2.Guangdong Wang Fine Chemicals Limited, Jiangmen 529100,China) |
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| Abstract: | The non-Newtonian property,the viscous activation energy and the relaxation time spectra for polyurethane(PU) adhesive were investigated by HAAKE torque rheometer and rotational viscometer.The results showed that the PU adhesives belong to pseudoplastic fluids.The viscosity and its temperature sensibility of adhesive prepolymer were related to the hydrogen-bond density of polymer,namely viscous activation energy and temperature sensibility were increased with increasing hydrogen-bond density.The relaxation time spectra of PU adhesive prepolymer and their,influencing factors were investigated,and their testing results had a theoretically guiding significant for grasping adhesive fluidity in laminating process. |
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| Keywords: | polyurethane(PU) adhesive prepolymer non -Newtonian property activation energy relaxation time spectra |
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