Nano-healing mechanism of surface flaws on high strength carbon fibers with high-temperature vapor deposition polymerization polyimide coatings
| Project/Area Number |
22710091
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Nanostructural science
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
NAGANUMA Tamaki 独立行政法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, MANA研究者 (40391213)
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| Project Period (FY) |
2010 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 表面・界面 / ナノ構造 / ヒーリング / 高温蒸着重合 / 炭素繊維 / 繊維引張強度 |
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| Research Abstract |
The effect of polyimide coatings on the filament tensile strength of high strength polyacrylonitrile-based carbon fiber was studied by using a high-temperature vapor deposition polymerization(VDP) coating processes. We found that this coating has a positive impact on those fibers with artificial notches less than 30 nm in depth and the potential to heal nano-ordered surface flaws(nano-flaws) of the fibers, resulting in a 25% increase of the filament tensile strength. The formation of a high-dense phase and a weak interface near a fiber surface seem to contribute to increase the filament tensile strength as well as efficient infiltration of the VDP coating into nano-flaws.
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Report
(3 results)
Research Products
(7 results)
