| 학회 |
한국고분자학회 |
| 학술대회 |
2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 |
30권 2호 |
| 발표분야 |
복합재료 |
| 제목 |
Modification of Y-joint for filament wound composite pressure vessel by the epoxy-polysulfone semi-IPNs |
| 초록 |
Toughening was needed at the Y-joint for the filament wound composite pressure vessel when inner pressure was applied. The epoxy resin was based on diglycidyl ether of bisphenol-A(DGEBA type) and diaminodiphenylsulfone (DDS). 1K carbon fiber was used as a reinforcing material. The morphology spectrum which has gradual change of the morphological feature resulting from the concentration gradient of PSf in the composite can be obtained by inserting the PSf film and by spraying particles at the center of composite during filament winding. The relative rate of the dissolution and diffusion of the PSf in the epoxy determine the concentration gradient of the PSf. As the concentration of the PSf increases, the morphology changes from sea-island to nodular structure. The fracture toughness of the composite with 20 wt % PSf film was 2.6 times higher than that of the unmodified composite and with 21 wt % particles was 2.3 times higher than that of the unmodified composite. This result was ascribed to the plastic deformation of the continuous PSf rich phase in the semi-IPN having morphology spectrum. |
| 저자 |
윤남균1, 정상기1, 원용구1, 김성철2
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| 소속 |
1국방과학(연), 2한국과학기술원 |
| 키워드 |
\toughness; epoxy; composite
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| E-Mail |
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