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http://dx.doi.org/10.7234/composres.2021.34.1.016

Study on Microstructure and Physical Properties of PUF by the Impeller Type of Agitator  

Lee, Chae-Rim (Carbon Composite Department, Korea Institute of Materials Science (KIMS))
Kim, Jung Soo (Carbon Composite Department, Korea Institute of Materials Science (KIMS))
Park, Byeongho (Carbon Composite Department, Korea Institute of Materials Science (KIMS))
Um, Moon-Kwang (Carbon Composite Department, Korea Institute of Materials Science (KIMS))
Park, Teahoon (Carbon Composite Department, Korea Institute of Materials Science (KIMS))
Publication Information
Composites Research / v.34, no.1, 2021 , pp. 16-22 More about this Journal
Abstract
Polyurethane foam (PUF) can be manufactured in soft, semi-rigid, and hard forms, so it is used in various fields industrially. Among them, rigid PUF has excellent mechanical properties and low thermal conductivity, and is used as a thermal insulation material for buildings and as a cold insulation material in the natural gas transportation field. In this field, there is a steady demand on higher mechanical strength and lower thermal conductivity. In this study, a rigid PUF was manufactured, and the microstructure and physical properties were studied according to the impeller type (propeller, dispersed turbine) of the agitator. Through FE-SEM and Micro-CT analysis, it was confirmed that the average pore size of the foam manufactured with the dispersed turbine was 21.5% smaller than that of the pore made by the propeller. The compressive strength was improved by 15.4%, and the thermal conductivity decreased by 3.1% in the foam with small pores. This result can be utilized for fabricating PUF composites.
Keywords
Polyurethane foam; Dispersed turbine; Cell structure;
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Times Cited By KSCI : 2  (Citation Analysis)
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