| Project/Area Number |
25630292
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Composite materials/Surface and interface engineering
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| Research Institution | University of Fukui |
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Principal Investigator |
HASHIMOTO Tamotsu 福井大学, 工学(系)研究科(研究院), 教授 (00198681)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 高分子合成 / 高分子材料 / リサイクル / 分解 / 炭素繊維 / 繊維強化プラスチック / 複合材料 / アセタール |
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| Outline of Final Research Achievements |
Two epoxy resins containing degradable acetal linkages were synthesized by the reaction of cresol novolak-type phenolic resin (CN) with vinyl ethers containing a glycidyl group [cyclohexane dimethanol vinyl glycidyl ether (CHDMVG) and 4-vinyloxybutyl glycidyl ether (VBGE). Carbon fiber-reinforced plastics (CFRPs) were prepared by heating laminated prepreg sheets with CN-CHDMVG resin (derived from CN and CHDMVG) and CN-VBGE resin (derived from CN and VBGE), in which carbon fibers are impregnated with epoxy resins containing curing agents [dicyandiamide (DICY)] and curing accelerator (3,4-dichlorophenyl)-1,1-dimethylurea (DCMU)]. CN-CHDMVG-based CFRPs and CN-VBGE-based CFRPs exhibited almost the same tensile strength as the conventional bisphenol-A-based CFRPs. CN-CHDMVG-based CFRPs and CN-VBGE-based CFRPs underwent smooth breakdown with the treatment of hydrochloric acid in tetrahydrofuran at room temperature for 24 h to regenerate strands of carbon fibers for chemical recycling.
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