新型炭材料（中英文）2024，Vol.39Issue(4)：668-680,13.DOI:10.1016/S1872-5805(24)60867-X
Raman和FTIR光谱半定量分析中间相沥青基泡沫炭的结构演变行为
Semi-quantitative analysis of the structural evolution of mesophase pitch-based carbon foams by Raman and FTIR spectroscopy
摘要
Abstract
Graphitized carbon foams(GFms)were prepared using mesophase pitch(MP)as a raw material by foaming(450 ℃),pre-oxidation(320 ℃),carbonization(1 000 ℃)and graphitization(2 800 ℃).The differences in structure and properties of GFms prepared from different MP precursors pretreated by ball milling or liquid phase extraction were investigated and compared,and semi-quantitative calculations were conducted on the Raman and FTIR spectra of samples at each preparation stage.Semi-quantitat-ive spectroscopic analysis provided detailed information on the structure and chemical composition changes of the MP and GFm de-rived from it.Combined with microscopic observations,the change from precursor to GFm was analyzed.The results showed that ball milling concentrated the distribution of aromatic molecules in the pitch,which contributed to uniform foaming to give a GFm with a uniform pore distribution and good properties.Liquid phase extraction helped remove light components while retaining large aromatics to form graphitic planes with the largest average size during post-treatment to produce a GFm with the highest degree of graphitization and the fewest open pores,giving the best compression resistance(2.47 MPa),the highest thermal conductivity(64.47 W/(m·K))and the lowest electrical resistance(13.02 μΩ·m).Characterization combining semi-quantitative spectroscopic ana-lysis with microscopic observations allowed us to control the preparation of the MP-derived GFms.关键词
中间相沥青/泡沫炭/拉曼光谱/红外光谱/石墨化Key words
Mesophase pitch/Carbon foams/Raman/FTIR/Graphitization分类
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刘越,常胜凯,苏展鹏,黄祖健,覃吉,杨建校..Raman和FTIR光谱半定量分析中间相沥青基泡沫炭的结构演变行为[J].新型炭材料（中英文）,2024,39(4):668-680,13.基金项目
This work was supported by the National Natur-al Science Foundation of China(52372044,22276191),Shccig-Qinling Program Found(SMYJY20230072)and CNPC Innovation Found(2022DQ02-0411). （52372044,22276191）
