한국재료학회지 (Korean Journal of Materials Research)

  • 제26권9호
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  • Pages.472-477
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  • 2016
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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정전분무법으로 제작된 열경화성 Phenol-formaldehyde resin 코팅층의 1차원적 미세구조 형성 메카니즘

1-D Microstructure Evolution of Electrostatic Sprayed Thermosetting Phenol-formaldehyde Resin Coating

  • 김백현 (한국항공대학교 항공재료공학과) ;
  • 배현정 (한국항공대학교 항공재료공학과) ;
  • 고유민 (한국항공대학교 항공재료공학과) ;
  • 권도균 (한국항공대학교 항공재료공학과)
  • Kim, Baek Hyun (Department of Materials Engineering, Korea Aerospace University) ;
  • Bae, Hyun Jeong (Department of Materials Engineering, Korea Aerospace University) ;
  • Goh, Yumin (Department of Materials Engineering, Korea Aerospace University) ;
  • Kwon, Do-Kyun (Department of Materials Engineering, Korea Aerospace University)
  • 투고 : 2016.04.18
  • 심사 : 2016.07.29
  • 발행 : 2016.09.27
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초록

Microstructure evolutions of thermosetting resin coating layers fabricated by electrostatic spray deposition (ESD) at various processing conditions were investigated. Two different typical polymer systems, a thermosetting phenol-formaldehyde resin and a thermoplastic polyvinylpyrrolidone (PVP), were employed for a comparative study. Precursor solutions of the phenol-formaldehyde resin and of the PVP were electro-sprayed on heated silicon substrates. Fundamental differences in the thermomechanical properties of the polymers resulted in distinct ways of microstructure evolution of the electro-sprayed polymer films. For the thermosetting polymer, phenol-formaldehyde resin, vertically aligned micro-rod structures developed when it was deposited by ESD under controlled processing conditions. Through extensive microstructure and thermal analyses, it was found that the vertically aligned micro-rod structures of phenol-formaldehyde resin were formed as a result of the rheological behavior of the thermosetting phenol-formaldehyde resin and the preferential landing phenomenon of the ESD method.

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