Author
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Dunn Jr, Larson |
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SHARP, PATRICIA - UNIVERSITY OF ILLINOIS |
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Submitted to: Annual Meeting and Expo of the American Oil Chemists' Society
Publication Type: Abstract Only Publication Acceptance Date: 5/1/1996 Publication Date: N/A Citation: N/A Interpretive Summary: Technical Abstract: With recent international agreements to ban the manufacture and use of chlorofluorocarbons (CFCs), alternative procedures for synthesizing foams are a target of this and other polyurethane research. Soy molasses and soy whey were incorporated into rigid polyurethane foams as alternative high moisture blowing agents. They were used as unmodified aqueous solutions of varying solids' levels as simple additives to foams or as partial replacements for isocyanate components. Other soybean products, such as flours, were used as fillers in rigid foams. Foams created, using soybean-derived materials, were compared to standard CFC-and water-blown foams in terms of density, compressive strength, friability, open cell content and thermal conductivity. Samples with less than 20% moisture generally performed equal to or better than water-blown control foams in all tests. Amounts of up to 40% by weight, based on foam polyol, were used with predictable degradation of foam properties as the amount of the soybean product was increased. A new method for measuring and predicting thermal conductivity of polymer foams was used in this work. The overall results indicate potential for future use of this technology in CFC-free systems. |
