| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 봄 (04/05 ~ 04/07, 대전컨벤션센터) |
| 권호 |
42권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Synthesis of PDMS-based self-healing microcapsules embedded in Polyurethane matrix with enhanced mechanical and thermal stability |
| 초록 |
To develop self-healing skin layers of instrument panels in automobiles, healing agents-cotained mechanically and thermally stable microcapsules were prepared and incorporated into a polyurethane (PU) matrix. Two different poly(urea-formaldehyde) (PUF) microcapsules containing either a polydimethylsiloxane (PDMS)/Pt catalyst (Pt) blend or crosslinker were synthesized using in situ emulsion polymerization. After all, the synthesized microcapsules which were mechanically and thermally weak were greatly enhanced by decreasing the capsule size and depositing an additional urea-formaldehyde (UF) layer onto pre-formed PUF microcapsules. The two different optimized microcapsules were successfully embedded in a PU matrix and could be broken upon matrix cracking, thereby releasing the healing agent to the target areas via capillary effects. Consequently, it was confirmed that the cracked portions were repaired through chemical and/or physical interactions within the healing system. |
| 저자 |
민지홍, 김민수, 조강희, 국윤민, 홍혜진, 유병용, 공혜연, 고원건
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| 소속 |
연세대 |
| 키워드 |
polyurethane; PDMS; microcapsules; self-healing
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| E-Mail |
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