工信部推广煤气化节能技术

2012年4月乔晋忠等,多壁碳纳米管/聚碳酸酸复合材料的制备与性能●3.0. 8%时达到最大值67 MPa,比纯PC薄膜拉伸强度参考文献:提高了12%。这主要是由于,经硝化氧化处理并在离子液体存在下,碳纳米管发生了相当程度的解缠,[1] 赵文元,赵文明,王亦军.聚合物材料的电学性能及其有利于其分散。同时,碳纳米管与咪唑类离子液体应用[ M].北京:化学工业出版社,2006.的π_π交联作用,有利于其在PC基体中的分散和[2] Lijima s. Helical microtubules of graphitic carbon[J].Nature , 1991 ,354(6348) :56-58.碳纳米管与PC基体间的相互作用。当添加量小于1.0%时,在复合薄膜中能有效地抑制团聚现象,提[3] Holzinger M, Vostrowsky 0, Hirsch A, et al. Sidewallfunctionalization of carbon nanotubes [J]. Angew Chem高碳纳米管与PC基体间的相容性和界面结合能力Int Ed ,200 ,40(21) :4002 4005.(见图2所示),从而使复合材料的力学性能得到提[4] Kocharova N, Leiro J, Kankare J, et al. Aqueous disper-升。当碳纳米管质量分数超过1.0%时,薄膜的拉sion, surface thiolation , and direct self-assembly of carbon伸强度较快地下降。这可能是因为,随着添加量的nanotubes on gold[J]. Langmuir ,2007 ,23 :3-3371.增多,碳纳米管之间的团聚现象增多,导致- -定程度[$]Fukushima T, Kosaka A, Yamamoto Y, et al. Dramatic的相分离。effect of dispersed carbon nanotubes on the mechanicaland electroconductibe properties of polymers derived from3结论ionic liquids[J]. Small ,2006 ,2(4) :554-560.多壁碳纳米管在相容剂[ Bmim]PF的存在下，[6] Marcilla R,Cumi M L,Cozzoli P D,et al. Nano obiects ona round trip from water to organics in a polymeric ionic经溶液混合法制备了MWNTs/PC纳米复合薄膜;利liquid vehicle[ J]. Small 2006 ,2(4) :507-512.用TEM、SEM等检测手段对碳纳米管处理前后的形[7] Bellayer s,Gilman J W ,Eideman N,et al. Preparation of态结构、复合薄膜的表观形态进行了表征;改善了碳homogeneously disperesed multiwalled carbon nanotube/纳米管与PC的相容性,复合材料的拉伸强度得到polystyrene nanocomposites via melt extrusion using trial-了提高,导电阈值出现在碳纳米管质量分数为kyl inidazolium compatibilizer [J]. Adv Funet Mater,1.0%~2.0%的范围内。对复合材料剪切断面的扫2005 ,15 :910-916.描电镜分析表明,碳纳米管比较均匀地分散在PC[8田蓉,李少卿,万 丽,等.离子液体在碳纳米管功基体中,没有明显的相分离,对PC起到了一定的增能化及复合材料中的应用研究进展[J].化工进展，2008, 27(10): 1569-1573.强作用。Preparation and properties of MWNTs/ polycarbonate compositeQIAO Jin-zhong, WANG Tong( School of Science, North University of China, Taiyuan Shanxi 030051, China)Abstract: Carbon nanotube/ polycarbonate nanocomposites were prepared via solution mixing using [ Bmim ] PF。compatibilizer. TEMand SEM were used to analyse micro-morphology of modified M WNTs and composite films. The content of MWNTs influencing on the electrical and mechanical properties were investigated. The results show that MWNTs were well dispersed in PC and the nanocomposite's mechanical properties is inhanced. Meanwhile, the percolation threshold of composites appears when the content of MWNTs is inrange of 1. 0% ~2. 0%.Key words: polycearbonate; MWNT; ionic liquids工信部推广煤气化节能技术为提高能源利用效率,工业和信息化部(简称工信部)将在“十二五”期间,选择19家左右的以煤为原料的大、中型合成氨等煤化工企业进行技术改造,形成-定规模的以先进煤气化技术为龙头的煤气化| 中国煤化工压固定床煤气化能力,实现年节约标准煤171万t。这些企业将为合成氨等煤化工生产企业在MYHCN M H降低生产成本、实现节能降耗发挥积极的作用。(捕自《山西煤化工》)