So Jeong Park, Mina Park, Soo Been Jeong, Yerin Lee, Minsoo Jeong, and Yeong Don Park†
Department of Energy and Chemical Engineering, Incheon National University, Incheon 22012, Korea
인천대학교 에너지화학공학과
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Hydrophobic water-repellent coating is a key technology for controlling surface properties and protecting surfaces not only in industrial fields but also in everyday life. Since the hydrophobic surface has functionalities such as self-cleaning, anti-corrosion, and anti-fouling as well as waterproof, it plays a role in protecting the surface and increasing durability in various fields. In this study, the surface of hydrophilic silica nanoparticles was modified to be hydrophobic through non-solvent vapor deposition. A simple spray coating formulation was developed by dispersing silica nanoparticles in a solvent together with a polymer binder, poly(methyl methacrylate). The surface morphology, roughness, and transmittance were investigated with the silica nanoparticle size, solvent type, and polymer concentration, and the hydrophobic surface was optimized by measuring the water contact angle.
소수성의 발수 코팅은 산업분야 뿐만 아니라 일상생활에서도 표면특성 제어와 표면보호를 위해 중요한 기술이다. 소수성의 표면은 방수 뿐만 아니라 자가세정, 부식방지, 오염방지 등의 기능성도 가지고 있기 때문에 다양한 분야에서 표면을 보호하고 내구성을 높이는 역할을 한다. 본 연구에서는 비용매 기상증착 방법을 통하여 친수성의 실리카 나노입자를 소수성으로 표면개질하였다. 실리카를 고분자 바인더인 폴리메틸 메타크릴레이트와 함께 용매에 분산하여 내후성이 좋은 간편한 스프레이 코팅제를 개발하였다. 실리카 나노입자크기, 용매의 종류, 고분자의 농도 조절에 따른 표면 모폴로지와 거칠기 변화, 투과도를 분석하였으며, 물 접촉각 측정을 통해 소수성의 표면을 최적화하였다.
Keywords: hydrophobic, silica nanoparticle, poly(methyl methacrylate), trichloro(octyl)silane, spray coating.
2023; 47(6): 780-785
Published online Nov 25, 2023
Department of Energy and Chemical Engineering, Incheon National University, Incheon 22012, Korea