苯乙烯存在下马来酸酐熔融接枝聚丙烯的研究Study on Melt-Grafting of Maleic Anhydride onto Polypropylene in the Presence of Styrene
张才亮,许忠斌,冯连芳,王嘉骏,顾雪萍
摘要(Abstract)：
分别在哈克流变仪(Haake)和双螺杆挤出机(TSE)中,研究了苯乙烯(St)存在下马来酸酐(MAH)熔融接枝聚丙烯(PP)的过程。讨论了过氧化二异丙苯(DCP)用量、St用量、MAH用量、反应时间、反应温度、螺杆转速以及反应器型式对接枝反应的影响。实验发现:随DCP用量的增加,MAH的接枝率先增加后减小,熔体流动速率(MFR)一直增加;保持MAH用量不变增加St用量时,MAH的接枝率在MAH与St的摩尔比为1:1时达到最大,MFR却一直减小;保持St用量不变增加MAH用量,MAH的接枝率先增加后略有减小,MFR却存在极大值;随反应时间的增加,MAH的接枝率与MFR都先增加后减小;温度过高,MAH的接枝率降低,PP热降解较严重;螺杆转速较低时,MAH的接枝率较低,螺杆转速较高时,PP降解增加;在TSE中的MAH接枝率比Haake中的低,但降解比Haake中的小得多。
关键词(KeyWords)： 聚丙烯;马来酸酐;苯乙烯;熔融接枝
基金项目(Foundation): 国家自然科学基金重大项目(50390097);; 国家重点基础研究发展规划项目(2001CB711203)
作者(Author): 张才亮,许忠斌,冯连芳,王嘉骏,顾雪萍
参考文献(References)：
- [1]Costas Tzoganakis.Reactive extrusion of polymers:A review[J].Advances in Polymer Technology,1989,9(4):321-330.
- [2]YAN Wei(烟伟),LIU Hong-lai(刘洪来),ZHENG An-na(郑安呐).Studies on the experiment of reactive extrusive processes for the synthesis of polystyrene(苯乙烯反应挤出聚合过程的实验研究)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2004,18(4):447-452.
- [3]Bettini S H P,Agnelli J A M.Grafting of maleic anhydride onto polypropylene by reactive extrusion[J].Journal of Applied Polymer Science,2002,85:2706-2717.
- [4]Bettini S H P,Agnelli J A M.Grafting of maleic anhydride onto polypropylene by reactive processing.I.Effect of maleic anhydride and peroxide concentrations on the reaction[J].Journal of Applied Polymer Science,1999,74:247-255.
- [5]Bettini S H P,Agnelli J A M.Grafting of maleic anhydride onto polypropylene by reactive processing.II.Effect of rotor speed and reaction time[J].Journal of Applied Polymer Science,1999,74:256-263.
- [6]Dohood Chang,White L.Experimental study of maleation of polypropylene in various twin-screw extruder systems[J].Journal of Applied Polymer Science,2003,90:1755-1764.
- [7]HervéCartier,Hu Guo-hua.Styrene-assisted free radical grafting of glycidyl methacrylate onto polyethylene in the melt[J].Journal of Polymer Science:Part A:Polymer Chemistry,1998,36:2763-2774.
- [8]XIE Xu-ming(谢续明),LI Ying(李颖),ZHANG Jing-chun(张景春),YANG Xun(杨讯).Study of melt free radical grafting of maleic anhydride and styrene onto polypropylene and its properties(马来酸酐-苯乙烯熔融接枝聚丙烯的影响因素及其性能研究)[J].Acta Polymerica Sinica(高分子学报),2002,(1):7-12.
- [9]Li Ying,Xie Xu-Ming,Guo Bao-Hua.Study on styrene-assisted melt free-radical grafting of maleic anhydride onto polypropylene[J].Polymer,2001,42:3419-3425.
- [10]Norman G Gaylord,Rajendra Mehta,Doraisamy R Mohan,Vijay Kumar.Maleation of linear low-density polyethylene by reactive processing[J].Journal of Applied Polymer Science,1992,44:1941-1949.