聚酰亚胺
碳化
微型多孔材料
材料科学
固化(化学)
热解
高分子化学
傅里叶变换红外光谱
碳纤维
化学工程
有机化学
化学
复合材料
复合数
扫描电子显微镜
工程类
图层(电子)
作者
Naoto Ohta,Yoko Nishi,Takahiro Morishita,Tetsuro Tojo,Michio Inagaki
出处
期刊:Tanso
[The Carbon Society of Japan]
日期:2008-01-01
卷期号:2008 (233): 174-180
被引量:14
标识
DOI:10.7209/tanso.2008.174
摘要
Imidization and carbonization behaviors of various aromatic polyimide films synthesized from an anhydride with different diamines were investigated by FTIR and TG/DTG methods. Imidization of poly (amic acid) s with pendant -CH3 and-CF3 groups directly bonded to phenyl ring required long times for curing at 300°C. Pyrolysis and carbonization of polyimides having pendant groups occurred over a little wider temperature range than those having no pendant groups. The carbonize films were of ultramicroporous character with pore width of ca. 0.5 nm. Pore development in carbon films was found to depend strongly on whether the precursor polyimide contains fluorine or not ; fluorine containing polyimide gave a high microporous surface area of 1400 m2/g and micropore volume of 0.39 mL/g.
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