|
Production of rigid polyurethane foams from soy-based polyolsKeywords: Polyurethane , Rigid Foams , Oleochemical Polyester Polyols , Soy-Based Polyols , Ethylene Glycol Abstract: The production of rigid polyurethane foams is made varying the soy-based polyol percentage between 20 and 30% into the formulation. Four blocks of foam are obtained using two oleochemicals polyols from ethanol and ethylenglycol (with funcionalities of 2 and 6, respectively). The foams were characterized by thermal and mechanic tests finding a conductivity value between 0.022-0.026 W/mK and a compressive strength of 15-20 psi, comparables with the commercial specifications and showing the obtained product as appropriate PU foam for industrial applications.
|