탄소나노튜브 보강 여부에 따른 자가치료용 마이크로캡슐의 박막 특성 평가Evaluation of Thin-Shell Properties of Self-Healing Microcapsules by Reinforcement of Carbon Nanotubes
- Other Titles
- Evaluation of Thin-Shell Properties of Self-Healing Microcapsules by Reinforcement of Carbon Nanotubes
- Authors
- 장정근; 김현지; 윤성호
- Issue Date
- Jan-2023
- Publisher
- 한국정밀공학회
- Keywords
- Self-healing microcapsules; Carbon nanotubes; Storage capability test; Micro-compressive test; 자기치료용 마이크로캡슐; 탄소나노튜브; 보관성능시험; 미소압축시험
- Citation
- 한국정밀공학회지, v.40, no.1, pp 71 - 77
- Pages
- 7
- Journal Title
- 한국정밀공학회지
- Volume
- 40
- Number
- 1
- Start Page
- 71
- End Page
- 77
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/26164
- DOI
- 10.7736/JKSPE.022.089
- ISSN
- 1225-9071
2287-8769
- Abstract
- In this study, thin-shell surface observation, storage capability test, and micro-compressive test were performed for selfhealing microcapsules using a field emission scanning electron microscope (FE-SEM) and a micro-compressive testingmachine. A microcapsule having a melamine-urea-formaldehyde thin-shell and a microcapsule having a melamine-ureaformaldehyde thin-shell reinforced with carbon nanotubes were used. Two carbon nanotube contents were considered: 0.17 wt% and 0.50 wt%. Thin-wall shell state was relatively smooth when microcapsules were not reinforced with carbon nanotubes. It was uneven when microcapsules were reinforced with carbon nanotubes. Prepared microcapsules showed little decreases of weights even when the exposure time was increased regardless of whether they were reinforced with carbon nanotubes. Thus, their storage capability was good. When carbon nanotube content was the same, the fracture load was almost constant without being affected by the diameter of the microcapsule. However, fracture displacement increased with increasing diameter of the microcapsule. When diameters of microcapsules were similar, fracture load and fracture displacement increased when carbon nanotube content increased. It was found that self-healing microcapsules had good storage capability and mechanical properties. Thus, they could be applied to repair damage to composite materials if thin-shell formation mechanism for adding carbon nanotubes is supplemented.
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