[논문]셀룰로오스 나노섬유를 활용한 해양 방오 코팅제에 관한 기초 연구

장낙섭; 김태균; 오홍섭

doi:10.14190/jrcr.2021.9.4.469

[국내논문] 셀룰로오스 나노섬유를 활용한 해양 방오 코팅제에 관한 기초 연구
A Basic Study on the Marine Anti-Fouling Coating Using Cellulose Nanofiber 원문보기

Journal of the Korean Recycled Construction Resources Institute = 한국건설순환자원학회 논문집, v.9 no.4, 2021년, pp.469 - 477

장낙섭 (경상국립대학교 토목공학과) , 김태균 (경상국립대학교 토목공학과) , 오홍섭 (경상국립대학교 토목공학과)

초록
AI-Helper

본 연구에서는 해양환경에 노출된 구조물의 내구성과 안전성 저하를 방지하는 셀룰로오스 방오 코팅제에 대한 기본적인 역학 성능을 평가하였다. 셀룰로오스 나노섬유와 AKD 및 폐유리 미분말을 주요 재료로 구성하여 제조하였으며, 접촉각 시험, 건조 시간, 점성 분석, 미세구조 분석을 실시하였다. 셀룰로오스 방오 코팅제를 1회 코팅할 경우 상대적으로 강재 시편에서 높은 소수성능을 발휘하는 것으로 나타났으며, 시멘트 모르타르에서는 AKD 함유량이 증가할수록 접촉각이 증가하는 것이 확인되었다. 3회 코팅시 최대 151.6°의 초소수성을 표면을 확인하였으며, 폐유리 미분말 혼입시 상대적으로 높은 소수성능을 갖는 것이 나타났다. 셀룰로오스와 증류수를 1:1 비율로 제조할 경우 의가소성 유체에 해당하여 코팅제로의 활용에 적합할 것으로 판단되었다.

Abstract ▼ AI-Helper

In this study, the mechanical property of anti-fouling coating using CNF was evaluated to prevent the durability and stability of structure exposed the marine environment. Anti-fouling coating using CNF was prepared by CNF, AKD and waste glass powder, and contact angle test, drying time, viscosity analysis and microstructure were performed. When coating on one number of times, It was showed to relatively high hydrophobic performance in steel. And It was confirmed that the contact angle increased as the content of AKD increased in cement mortar. When coating on three number of times, the surface was confirmed super-hydrophobic at maximum of 151.6°. When mixing waste glass powder, the surface was showed to relatively high hydrophobic. It is pseudo plastic fluid when CNF and distilled water were prepared in a ratio of 1:1, And Anti fouling coating is judged to be suitable for use as coating on marine structure.

Keyword

표/그림 (16)

그림 Fig. 1. Chemical structure of Cellulose
그림 Fig. 2. Grading curve of waste glass powder
표 Table 1. Chemical composition of CNF
표 Table 2. Chemical composition of AKD
표 Table 3. Mix proportion of anti-fouling coating using CNF and result for pH test
그림 Fig. 3. Classification of surface property according to contact angle(Lee et al., 2017)
그림 Fig. 4. Contact angle on the cement mortar and steel with/without anti-fouling coating using CNF
그림 Fig. 5. Contact angle of surface coating on one number of times with anti-fouling coating using CNF
그림 Fig. 6. Contact angle of cement mortar surface with anti-fouling coating using CNF
그림 Fig. 7. The concept of hydrophobic on surface of anti-fouling coating using CNF
표 Table 4. Drying time by anti-fouling coating using CNF
그림 Fig. 8. Qualitative flow curves for different types of fluids(Chhabra 2010)
그림 Fig. 9. Variation of shear stress with shear rate on anti-fouling coating using CNF
그림 Fig. 10. EDS spectrum
그림 Fig. 11. SEM Image of cement mortar surface coated with anti-fouling coating using CNF
그림 Fig. 12. SEM Image of anti-fouling coating using CNF

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