• Title/Summary/Keyword: 코트

Search Result 208, Processing Time 0.03 seconds

Comparison on the fire performance of additional insulation materials for improving the fire retardancy in engine-room of FRP vessel (FRP 선박 기관실 난연성 향상을 위한 추가 방열재의 화재성능비교)

  • Choi, Jung-Min;Um, Han-Chan;Jin, Young-Hwa
    • Journal of Advanced Marine Engineering and Technology
    • /
    • v.38 no.9
    • /
    • pp.1150-1155
    • /
    • 2014
  • To prevent the flame spread in FRP vessel in fire, the engine-room of the vessel should be constructed additionally with laminated fire-retardant resin over 3 times or equivalent insulation materials to former according to the relevant standard for FRP vessel structure. It is surveyed that insulation materials called 'Gel coat' are widely used in FRP fishing vessel, however, test method and its criteria for Gel coat are not clearly establish and have not been evaluated yet, while test method and criteria for fire-retardant resin and fire-retardant polyurethane composite are described in test standard for type-approval. In this study, 3 fire-retardant resins, 4 gel coats, 1 flame-retardant paint and 1 polyurethane composite were selected based on the survey and were evaluated according to both IMO FTP Code part 5 and flame-retardant test. When comparing based on CFE values from flame-spread test, average value for 4 gel coats were lower than that of 3 fire-retardant resins. As for flame-retardant test, there were no significant differences between fire-retardant resin and gel coat, based on charred area.

줌업: 최근 광학기술 시장동향 및 KOTRA 글로벌사업 세미나 -한국광학기기협회 주최, 11월 26일 코트라 세미나실에서 열려

  • Park, Ji-Yeon
    • The Optical Journal
    • /
    • s.131
    • /
    • pp.34-36
    • /
    • 2011
  • 최근 광학산업의 흐름과 기술동향에 대해 짚어보고 정부의 중소기업의 해외시장 진출 지원 서비스 등에 관해 알아보는 세미나가 한국광학기기협회 주최로 지난 11월 26일 코트라 세미나실에서 열렸다. 아울러 협회에서는 중소기업 독자적으로 추진하기 어려운 사업개발 영역에 대해 협회를 주축으로 컨소시엄을 구성하여 국가 R&D사업을 추진하는 방법에 대한 소개와 업체들의 의견을 수렴하는 시간도 가졌다.

  • PDF

Synthesis of Vinyl-nano Silica Ball Composite : Its Application to Clearcoat (비닐-나노실리카볼 화합물의 클리어코트 특성 연구)

  • Kim, Bong-Gyeom;Park, Gun-Hee;Lee, Yong-Hwa;Noh, Seung-Man;Lee, Jae-Woo;Park, Seung-Kyu
    • Applied Chemistry for Engineering
    • /
    • v.21 no.6
    • /
    • pp.670-675
    • /
    • 2010
  • Inorganic-organic hybrid material such as vinyl-nano sized silica ball was synthesized by acrylo-alkoxysilane and nano silica ball with different particle size. And then they were formulated into acrylic-melamine clearcoat. This material is fully characterized with various analytical methods and applied for strength measurement. The glossy effect, matting effect and anti-scratching properties of materials were investigated for further growth and maintenance. When the particle size of nano silica ball is 20~30 nm, the glossy retain effect was increased by 7% compared to bare acrylic-melamine clearcoat. When a commercially available silica Aerosil 200 (Hydrophilic fumed silica, average particle size 12 nm, Degussa) react with vinyl alkoxysilane vinyl-fumed silica complex form. The vinyl-fumed silica along with clearcoat increases only 2% increase at glossy retain. Nano-scratch test results also support the glossy retain effect of vinyl nano-sized silica ball in clearcoat.