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http://dx.doi.org/10.3744/SNAK.2019.56.6.515

Mechanical and Thermal Characteristics of Polyurethane Foam with Two Different Reinforcements and the Effects of Ultrasonic Dispersion in Manufacturing  

Kim, Jin-Yeon (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Kim, Jeong-Dae (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Lee, Jae-Myung (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.56, no.6, 2019 , pp. 515-522 More about this Journal
Abstract
Since Liquefied Natural Gas (LNG) is normally carried at 1.1 bar pressure and at -163℃, special Cargo Containment System (CCS) are used. As LNG carrier is becoming larger, typical LNG insulation systems adopt a method to increase the thickness of insulation panel to reduce sloshing load and Boil-off Rate (BOR). However, this will decrease LNG cargo volume and increase insulation material costs. In this paper, silica aerogel, glass bubble were synthesized in polyurethane foam to increase volumetric efficiency by improving mechanical and thermal performance of insulation. In order to increase dispersibility of particles, ultrasonic dispersion was used. Dynamic impact test, quasi-static compression test at room temperature (20℃) and cryogenic temperature (-163℃) was evaluated. To evaluate the thermal performance, the thermal conductivity at room temperature (20℃) was measured. As a result, specimens without ultrasonic dispersion have a little effect on strength under the compressive load, although they show high mechanical performance under the impact load. In contrast, specimens with ultrasonic dispersion have significantly increased impact strength and compressive strength. Recently, as the density of Polyurethane foam (PUF) has been increasing, these results can be a method for improving the mechanical and thermal performance of insulation panel.
Keywords
Two different reinforcements; Polyurethane foam; Silica aerogel; Glass bubble; Ultrasonic dispersion;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Ahn, J.H., et al., 2018. Development and mechanical and thermal performance evaluation of polyurethane foam composites reinforced with glass bubbles. Journal of the Korean Society of Marine Engineering, 42(9), pp.708-714.
2 Ahn, J.H., et al., 2017. Mechanical behavior of polymer foam reinforced with silica aerogel. Journal of the Ocean Engineering and Technology, 31(6), pp.413-418.   DOI
3 Bae, J.H., Hwang, B.K., & Lee, J.M., 2019. Compression dynamic performance of glass bubble/epoxy resin adhesion. Composites Research, 32(2), pp.90-95.
4 Blumm, J., 2012. Thermal conductivity of engineering materials. Handbook of Measurement in Science and Engineering, pp.1151-1188.
5 Choi, S.W., Roh, J.U., Kim, M.S., & Lee, W.I., 2012. Analysis of two main LNG CCS (cargo containment system) insulation boxes for leakage safety using experimentally defined thermal properties. Applied Ocean Research, 37, pp.72-89.   DOI
6 Gaztransport & Technigaz, 2015. Mark III High Density (HD) Foam, URL: https://www.gtt.fr/en/news/nouveau-numero-de-gttinside-la-newsletter-trimestrielle-de-gtt-january-2015 [Accessed 30 Jan 2015].
7 Goods, S.H., Neuschwanger, C.L., Whinnery, L.L., & Nix, W.D., 1999. Mechanical properties of a particle‐strengthened polyurethane foam. Journal of Applied Polymer Science, 74(11), pp.2724-2736.   DOI
8 Kim, Y.H., et al., 2007. Effects of organoclay on the thermal insulating properties of rigid polyurethane foams blown by environmentally friendly blowing agents. Macromolecular, 15(7), pp.676-681.   DOI
9 Lee, Y., Baek, K.H., Choe, K., & Han, C., 2016. Development of mass production type rigid polyurethane foam for LNG carrier using ozone depletion free blowing agent. Cryogenics, 80, pp.44-51.   DOI
10 McGee, S.D., Batt, G.S., Gibert, J.M., & Darby, D.O., 2017. Predicting the effect of temperature on the shock absorption properties of polyethylene foam. Packaging Technology and Science, 30(8), pp.477-494.   DOI
11 Nazeran, N., & Moghaddas, J., 2017. Synthesis and characterization of silica aerogel reinforced rigid polyurethane foam for thermal insulation application. Journal of Non-Crystalline Solids, 461(1), 1-1.   DOI
12 Tseng, C. J., Yamaguchi, M., & Ohmori, T., 1997. Thermal conductivity of polyurethane foams from room temperature to 20 K. Cryogenics, 37(6), pp.305-312.   DOI