| 聚丙烯腈基碳纳米管复合材料的制备及其表征 |
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| 引用本文： | 刘玉兰,王延相,周海萍,刘峰钰,王成国,谢奔.聚丙烯腈基碳纳米管复合材料的制备及其表征[J].材料科学与工程学报,2011(4):596-600. |
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| 作者姓名： | 刘玉兰 王延相 周海萍 刘峰钰 王成国 谢奔 |
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| 作者单位： | 山东大学材料科学与工程学院材料液固结构演变与加工教育部重点实验室;山东大学材料科学与工程学院碳纤维工程技术研究中心 |
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| 基金项目： | 山东大学自主创新基金资助项目IIFSDU(2009TS004);山东省自然科学基金资助项目(Z2008F02);国家973子项目资助项目(2011CB605601) |
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| 摘 要： | 碳纳米管添加到聚合物中对其结构和性能都有深远的影响,本文通过浓硝酸对碳纳米管改性后,采用水相沉淀聚合的方法制备了聚丙烯腈/碳纳米管复合材料,同时研究了碳纳米管经过浓硝酸处理后其化学结构的变化;探讨了碳纳米管对聚丙烯腈复合材料热学和结晶性的影响。研究表明,浓硝酸常温处理不仅能除去杂质,还可以在碳纳米管表面引入羧基等含氧基团;加入碳纳米管后,聚丙烯腈的预氧化温度有一定程度的提前,放热量明显降低,同时对聚合物的结晶度也有一定程度的影响。
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| 关 键 词： | 聚丙烯腈/碳纳米管 复合材料 水相沉淀聚合 热性能 结晶性 |
Preparation and Characterization of Polyacrylonitrile/Carbon Nanotube Composites |
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| LIU Yu-lan,WANG Yan-xiang,ZHOU Hai-ping,LIU Feng-yu,WANG Cheng-guo,XIE Ben.Preparation and Characterization of Polyacrylonitrile/Carbon Nanotube Composites[J].Journal of Materials Science and Engineering,2011(4):596-600. |
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| Authors: | LIU Yu-lan WANG Yan-xiang ZHOU Hai-ping LIU Feng-yu WANG Cheng-guo XIE Ben |
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| Affiliation: | 1.Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education),Shandong University,Jinan 250061,China;2.Carbon Fiber Engineering Research Center,Faculty of Materials Science,Shandong University,Jinan 250061,China) |
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| Abstract: | Treated carbon nanotubes have a great influence on the structure and performance of the carbon nanotube modified polymers.Powdery polyacrylonitrile/mutiwalled carbon nanotube(MWCNT) composites were prepared by aqueous deposited polymerization method after modifing MWCNTs with concentrated nitric acid.We studied the effect of strong nitric acid on the MWCNTs and their chemical-structural changes,and discussed the effects of carbon nanotubes on the thermal and crystallization properties of polyacrylonitrile/MWCNT composites.It indicated that the normal processing of MWCNTs with concentrated nitric acid can not only remove impurities but also bring in the carboxyl groups onto the surfaces of carbon nanotubes.The preoxidation temperature of polyacrylonitrile/MWCNT composites decreased to some extent,moreover the heat release obviously reduced,the crystallinities of polymers varied without changing the basic structures of powdery polymers. |
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| Keywords: | PAN/MWCNT composite aqueous deposited polymerization thermal properties crystallization |
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