Study of Pyrolytic Conversion of Polycarbodiimide to Glass-like Carbon Film
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- Maeda Seiji
- Organic & Polymeric Materials, Tokyo Institute of Technology
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- Hashimoto Toshimasa
- Organic & Polymeric Materials, Tokyo Institute of Technology
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- Takaku Akira
- Organic & Polymeric Materials, Tokyo Institute of Technology
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- Hagiwara Atsushi
- Tokyo Research Center, Nisshinbo Industries Inc.
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- Saito Kazuo
- Tokyo Research Center, Nisshinbo Industries Inc.
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- Suzuki Toshio
- Tokyo Research Center, Nisshinbo Industries Inc.
Bibliographic Information
- Other Title
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- ポリカルボジイミドのガラス状炭素フイルムへの熱的変性に関する研究
Description
We have developed a new starting polymer for glass-like carbon film; poly-carbodiimide (PCDI). The purposes of this paper are to determine the structure of the carbonized PCDI and to reveal the mechanism for the carbonization.<BR>After heat treatment at 1000°C, the total yield was ca. 75 % and the density reached 1.78g/cm3. These values are much higher than the ordinary starting resins, such asphenolic resin, cellulose and PVC. The carbonized PCDI also has higher mechanical strength and gas permeability. These properties can be explained by the high density of the crystalline and the inter-crystalline structures.<BR>The IR spectrum shows that two kinds of crosslinkage, dimer and trimer, are formed densely below 230°C in air. These crosslinkages come from reactive carbodiimide groupsin the molecular main chain of PCDI. Partial oxidation of the sample promote the formation of the trimer from the dimer and the carbodiimide groups, so that the sample becomes more heat stable.
Journal
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- TANSO
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TANSO 1995 (168), 149-156, 1995
THE CARBON SOCIETY OF JAPAN
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Keywords
Details 詳細情報について
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- CRID
- 1390282679202827648
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- NII Article ID
- 130004121376
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- ISSN
- 18845495
- 03715345
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed