| 학회 |
한국고분자학회 |
| 학술대회 |
2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 |
29권 2호, p.136 |
| 발표분야 |
복합재료 |
| 제목 |
Toughening of carbon fiber/epoxy composite by the epoxy-polysulfone semi-IPNs with morphology spectrum |
| 초록 |
Fracture toughness of epoxy composite with polysulfone(PSf) to form morphology spectrum was investigated. The epoxy resin was based on diglycidyl ether of bisphenol-A(DGEBA type) and diaminodiphenylsulfone(DDS). 1K carbon fabric was used as the 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 in carbon fiber reinforced epoxy prepreg before cure. 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 2.7 times higher than that of the unmodified composite and with 21 wt % large size particles was 2.2 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, 원용구2, 김성철1
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| 소속 |
1한국과학기술원, 2국방과학(연) |
| 키워드 |
composite; epoxy; polysulfone; semi-IPN; toughness
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| E-Mail |
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