文献类型：期刊文献

中文题名：中间相沥青的预氧化对石墨化泡沫炭微裂纹的影响

英文题名：Effect of preoxidation on microcracks in graphite foams

作者：李娟[1];王灿[1];张翠翠[1];詹亮[1];乔文明[1];梁晓怿[1];凌立成[1]

机构：[1]华东理工大学,化学工程联合国家重点实验室,上海200237

年份：2010

卷号：25

期号：4

起止页码：303

中文期刊名：新型炭材料

外文期刊名：New Carbon Materials

收录：CSTPCD;;EI(收录号：20103813251724);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000281534800011)】；北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：National Natural Science Foundation of China (50672025, 5073003, 20806024), China Doctoral Science Foundation (20070251008)

语种：中文

中文关键词：泡沫炭;中间相沥青;预氧化;微裂纹

外文关键词：Carbon foam; Mesophase pitch; Preoxidation; Microcrack

摘要：通过对萘系中间相沥青进行预氧化处理,研究族组成变化对石墨化泡沫炭微结构的影响机制。结果表明:中间相沥青经过预氧化处理后,喹啉不溶物含量提高、族组成分布变窄,导致石墨化过程中泡沫炭泡孔的孔壁、韧带处热应力的梯度差异变小,进而使得微裂纹的数量、长度及间隙减小。
The formation mechanisms of microcracks in graphite foams were investigated by varying the preoxidation temperature of the precursor mesophase pitch. Results indicated that after the mesophase pitch was preoxidized, its quinolineinsoluble component became the dominant fraction, which leads to a decrease in heat stress gradient and as a result, a decrease in the amount, length and width of microcracks.