• Journal of the Society of Naval Architects of Korea
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• v.51 no.6
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• pp.495-502
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• 2014

Glass-reinforced polyurethane foam (R-PUF) is widely used as the primary and secondary insulation of Mark-III type liquefied natural gas (LNG) cargo system. And, polyurethane foam (PUF) and polyisocyanurate foam (PIR) are often used for insulation of onshore structures or LNG storage and pipeline system. These polymeric foam materials are known for the characteristics that mechanical properties are dependent on strain rate and temperature. In this study, compression tests for R-PUF, PIR, and PUF were carried out for the estimation of mechanical behaviors under the cryogenic environment. The range of thermal condition was from room temperature to 110K and strain rates were $10^{-3}s^{-1}$ and $10^{-4}s^{-1}$. The test results were analyzed based on the conditions of strain-rate and temperature.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2003.10a
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• pp.60-65
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• 2003

Semi-Rigid 폴리우레탄 foam의 한 종류인 PIR(Polyisocyanurate) foam은 당량적으로 과량의 MDI가 투입되어 생성된 Isocyanate Trimer(Isocyanurate)가 높은 Char Formation을 형성, 우수한 난연특성, 낮은 SMOKE INDEX, 높은 OXYGEN INDEX를 나타낸다. 국내엔 1988년 단열재용 폴리우레탄 foam으로는 최초로 미국의 UL Mark를 획득하여 건설, 건축등 관련업계에서 요구하는 난연특성 및 단열제로서의 제반요건에 부응하며 꾸준히 연구 개발되어 왔다.(중략)

• Composites Research
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• v.31 no.4
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• pp.133-138
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• 2018

Polymer foams were used to fill the void in the structure in addition to flame retardant and heat insulation. Polymer foams such as polyurethane, polyisocyanurate, poly(vinyl chloride), polyethylene terephthalate were used to weight lighting materials. In this study, epoxy foam was used to improve mechanical properties of polymer foam. Acid anhydride type hardener reacts with polyol. Using this phenomenon, if blowing agent was added into epoxy resin using acid anhydride type hardener, formation and compressive properties of epoxy foam was studied. Formation of polymer foam was compared with type of blowing agent and concentration of blowing agent via compressive test. As these results, optimized condition of epoxy foam was found and epoxy foam had better compressive property than other polymer foam.