| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 봄 (04/10 ~ 04/12, 부산컨벤션센터(BEXCO)) |
| 권호 |
44권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Highly Self-Healable and Scratch-Resistant Automotive Clear-Coat based on Reversible Polymer Network |
| 초록 |
Dynamic chemistry is a promising way to allow the development of effective self-healing materials. Among them reversible covalent bonds (e.g., Diels-Alder/retro-Diels-Alder reaction) can provide higher mechanical properties compared to non-covalent bonds (e.g., hydrogen bonding). However, the former, self-healing behavior can be limited and often required external stimuli such as high thermal energy. In this research, we designed tetraethylene glycol based binder containing bulky urea bonds based on dynamic chemistry. Tetraethylene glycol improves mechanical properties of coating systems and bulky urea bonds can effectively perform self-healing behavior through a dynamically reversible bond. Especially, thermally reversible crosslinking and de-crosslinking structures at bulky urea was monitored using an 1H-NMR and self-healing efficiency was analyzed using a nano-scratch tester with an optical microscope (OM) and atomic force microscope (AFM). |
| 저자 |
김기영1, 성수진1, 노승만1, 정인우2, 김진철1
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| 소속 |
1한국화학(연), 2경북대 |
| 키워드 |
self-healing; Scratch-resistantce; Hindered urea; thermally reversible bond
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| E-Mail |
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