Soybean-Oil-Based Polyisocyanurate Rigid Foams |
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Authors: | I Javni W Zhang Z S Petrovi? |
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Institution: | (1) Kansas Polymer Research Center, Pittsburg State University, Pittsburg, KS, 66762;(2) Kansas Polymer Research Center, Pittsburg State University, Pittsburg, KS, 66762 |
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Abstract: | Polyisocyanurate foams were prepared from polymeric 4,4-diphenylmethane diisocyanate (MDI), soy polyol and polypropylene oxide polyol by varying isocyanate index from 110 to 350. The higher isocyanate index produced polyisocyanurate foams with higher thermal stability, improved flame resistance, tensile strength, higher modulus, and higher glass transition. Soy-based foams displayed better thermal stability, lower flammability, higher rigidity (modulus) and higher compression strength than those based on the propylene oxide polyols of the same molecular weight and functionality. |
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Keywords: | Soy oil polyol polyisocyanurate foam thermal stability |
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