| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Enhancement of cross-linking density and ductility of an epoxy resin by tertiary amine-functionalized polyrotaxane additives. |
| 초록 |
A novel accelerator capable of simultaneously enhancing the cross-linking density and ductility of an epoxy resin without sacrificing the reaction rate is developed. The basic concept of the proposed accelerator is the functionalized polyrotaxane (PRX_NR1) accelerator modified with a tertiary amine: a molecular necklace structure that can increase cross-linking density and ductility of epoxy resin. FT-IR and DSC measurements confirmed that the PRX_NR1-containing epoxy resin afforded a high reaction rate. In addition, the cross-linking density and mechanical properties of the epoxy resin were confirmed by DMA, tensile test and impact test. The epoxy resin exhibited a simultaneous increase in cross-linking density and ductility which is important to avoid brittle fracture of the epoxy resins. These results imply that the proposed molecular necklace-like supramolecular PRX_NR1 accelerator is highly effective to overcome the conventional drawbacks of an epoxy resin. |
| 저자 |
서지애, 서소정, 서지훈
|
| 소속 |
고려대 |
| 키워드 |
supramolecule; polyrotaxane; cross-linker; accelerator; epoxy
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| E-Mail |
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