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中间相沥青原料对泡沫炭结构及性能的影响

Effects of Mesophase Pitch Raw Material on the Properties and Crystal Structure of Graphite Foams

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【Author】 WANG Xiao-jun~1,ZHAN Liang~1,YANG Jun-he~2,ZHANG Rui~1,LIANG Xiao-yi~1,LING Li-cheng~1(1.State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China;2.Department of Materials Science and Engineering,Shanghai Institute of Technology,Shanghai 200235,China)

【机构】华东理工大学化学工程联合国家重点实验室；上海应用技术学院材料科学与工程系；华东理工大学化学工程联合国家重点实验室上海200237；上海200237；上海200235；

【摘要】考察了萘系和煤系中间相沥青原料对发泡工艺及石墨化泡沫炭结构及性能的影响。由于萘系中间相沥青比煤系中间相沥青的平均相对分子量低且分布宽,两者的最佳发泡条件分别为600℃/5 MPa、600℃/1.5 MPa。流线型域状结构及圆盘状分子结构的煤系中间相沥青易于得到高热导率、高压缩强度的泡沫炭,所制煤系中间相沥青泡沫炭的热导率和压缩强度分别为33.4 W/(m.K)、1.28 MPa。更多还原

【Abstract】 The effects of mesophase pitches on the foaming process,the crystal structure and the pro-(perties) of the graphite foams were studied.Because the molecular weight distribution of coal based(mesophase) pitch is narrower than that of naphthalene based mesophase pitch,and the average molecular weight is lower than that of the latter,the optimal foaming conditions for coal based mesophase pitch and naphthalene based mesophase pitch were 600 ℃/5 MPa and 600 ℃/1.5 MPa, respectively.Graphite foam prepared from coal based mesophase pitch has a thermal conductivity and a compression strength of 33.4 W/(m·K) and 1.28 MPa,respectively.更多还原

【关键词】泡沫炭；中间相沥青；热导率；压缩强度；
【Key words】 carbon foam； mesophase pitch； thermal conductivity； compression strength；

【基金】国家自然科学基金(50672025);上海市科学技术委员会登山计划资助项目

【文献出处】华东理工大学学报(自然科学版) ,Journal of East China University of Science and Technology(Natural Science Edition) , 编辑部邮箱 ,2008年03期

【分类号】TQ127.1
【被引频次】7
【下载频次】217

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