Toughened Cyanate Ester Alloys via Reaction-induced Phase Separation.
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- HIROHATA Toshiro
- Osaka R & D Laboratories, Sumitomo Electric Industries, Ltd.,
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- KURODA Masatoshi
- Osaka R & D Laboratories, Sumitomo Electric Industries, Ltd.,
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- NISHIMURA Akira
- Osaka R & D Laboratories, Sumitomo Electric Industries, Ltd.,
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- INOUE Takashi
- Professor, Department of Organic & Polymeric Materials, Tokyo Institute of Technology
Bibliographic Information
- Other Title
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- 反応誘発型相分解による耐衝撃性シアネートエステルアロイ
- ハンノウ ユウハツガタソウ ブンカイ ニヨル タイ ショウゲキセイ シアネート
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Description
Numerous attempts to toughen thermosets like epoxies by incorporation of thermoplastics like PES or PEI have been made. Recently, we found that cyanate ester (CE) /soluble polyimide (PI) system can be a tough alloy with excellent heat resistance. Structure development during the curing reaction in a binary mixture of CE and soluble PI was investigated by light scattering. In the early stage of curing, the binary blend was a single-phase mixture. As the cure reaction proceeded, phase separation took place via the spinodal decomposition induced by the increase in the molecular weight of CE. This was supported by the characteristic change in light scattering profile with curing time. We also found that a ternary system, CE/epoxy/soluble PI system, render tough materials. In the ternary system, structure formation proceeded also by the reaction-induced spinodal decomposition. By incorporating epoxy, the miscibility with soluble PI was enhanced, so that the periodic distance in the two-phase structure was reduced to attain higher fracture toughness. The two-phase structure and fracture toughness in the ternary system was also affected by epoxy content and curing temperature.
Journal
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- Journal of the Japan Society for Composite Materials
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Journal of the Japan Society for Composite Materials 24 (2), 69-74, 1998
The Japan Society for Composite Materials
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Details 詳細情報について
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- CRID
- 1390001204623480320
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- NII Article ID
- 10002465439
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- NII Book ID
- AN00196748
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- ISSN
- 18848559
- 03852563
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- NDL BIB ID
- 4445852
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed