| 학회 |
한국재료학회 |
| 학술대회 |
2017년 가을 (11/15 ~ 11/17, 경주 현대호텔) |
| 권호 |
23권 2호 |
| 발표분야 |
4. 유해화학물질 대응 최적방제기술 및 시뮬레이션(Optimal mitigation technology and simulation for hazardous chemicals) |
| 제목 |
A Dual-Stimuli-Responsive Self-Reporting Chemical Reservoir Coating |
| 초록 |
We have developed a novel dual-stimuli-responsive self-reporting thiol-epoxy thermoset (DSRTET) coating that can detect both crack occurrence and pH variation. For crack detection, microcapsules containing 1,1,2,2-tetraphenylethylene (TPE) that exhibit aggregation induced emission (AIE) were prepared via a multi-step emulsion polymerization and dispersed in the DSRTET coating. For pH variation detection, the commercial pH indicator thymol blue was added into the polymer matrix. The effects of the microcapsule content of the DSRTET coating on its curing behavior, material properties, and crack sensitivity were characterized by using oscillatory rheology, the rigid body pendulum test (RPT), the nano-indentation test (NST), a universal test machine (UTM), and a scratch tester. It was found that the crack sensitivity of the DSRTET coating is strongly influenced by the material properties and the microcapsule content. The transitions in the color of the DSRTET coating in response to acid and base solutions were quantitatively investigated by using a multi-angle spectrophotometer in simple acid and base solution drop tests. The color of the DSRTET coating changes from pale green to red in the presence of an acidic solution and to blue in the presence of a basic solution. Finally, the DSRTET was applied to a laboratory scale chemical reservoir in order to assess its performance as a dual-stimuli-responsive self-reporting coating that can detect both cracks in the coated material and chemical spills due to leakages from the reservoir. |
| 저자 |
이태희1, 송영규2, 박선희3, 박영일1, 노승만4, 김진철1
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| 소속 |
1한국화학(연), 2UNIST, 3그린정밀화학연구센터, 4경북대 |
| 키워드 |
<P>Extrinsic self-reporting material; aggregation induced emission; pH variation; thiol-epoxy click reaction; curing kinetics; scratch test</P>
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| E-Mail |
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