| 偏氟乙烯/六氟丙烯乳液共聚反应动力学 |
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| 引用本文： | 余永重,冯东东,谢众,庄启昕,韩哲文.偏氟乙烯/六氟丙烯乳液共聚反应动力学[J].功能高分子学报,2008,21(3). |
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| 作者姓名： | 余永重 冯东东 谢众 庄启昕 韩哲文 |
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| 作者单位： | 1. 华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海200237
2. 上海三爱富新材料股份有限公司,上海,200241 |
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| 摘 要： | 对气相含氟单体偏氟乙烯(VDF)/六氟丙烯(HFP)的乳液共聚反应动力学机理进行了研究.结果表明:在80℃下,上述两种单体共聚反应速率r对乳化剂浓度(S)、引发剂浓度(I)和反应总压力(p)分别呈0.05级、0.31级和1.59级反应,由此推导得乳液共聚的反应速率表达式为:r一1.11×10-4S0.05I0.31P1.59,其中速率常数k=1.11×10-4g-0.37L0.37(MPa)-0.59min-1.由上述动力学方程计算得到的乳液共聚反应速率与实验结果一致.同时对两种单体的竞聚率做了初步讨论.
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| 关 键 词： | 乳液共聚 偏氟乙烯 六氟丙烯 动力学 竞聚率 |
Emulsion Copolymerization Kinetics of VDF/HFP |
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| YU Yong-zhong,FENG Dong-dong,XIE Zhong,ZHUANG Qi-xin,HAN Zhe-wen.Emulsion Copolymerization Kinetics of VDF/HFP[J].Journal of Functional Polymers,2008,21(3). |
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| Authors: | YU Yong-zhong FENG Dong-dong XIE Zhong ZHUANG Qi-xin HAN Zhe-wen |
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| Institution: | YU Yong-zhong~1,FENG Dong-dong~2,XIE Zhong~1,ZHUANG Qi-xin~1,HAN Zhe-wen~1(1.Key Laboratory for Utrafine Materials of Ministry of Education,School of Materials Science , Enigneering,East China University of Science , Technology,Shanghai 200237,China,2.Shanghai 3F New Material Co.Ltd.,Shanghai 200241,China) |
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| Abstract: | The emulsion copolymerization kinetic of vinylidene fluoride(VDF)/ hexafluoropropene(HFP) was studied and the copolymerization rate was measured according to the pressure of reaction system.Results show that the emulsion copolymerization rate is proportional to the 0.05 power of the concentration of emulsifier(S).It is also found that emulsion copolymerization rate of VDF/HFP is proportional to the 0.31 and 1.59 power to the initial initiator concentration(I) and the total gaseous pressure of the reaction s... |
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| Keywords: | emulsion copolymerization vinylidene fluoride hexafluoropropene kinetics (reactivity)(ration) |
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