Evaluation of an Organic-Inorganic Hybrid Insulation Material using an Inorganic Filler and Polyurethane with a Foaming Condition

Abstract

In this work, the properties of an organic-inorganic hybrid insulating material using an inorganic filler and polyurethane foam with different foaming conditions were investigated.At weight ratios of polyol and isocyanate of 1 to 1.2 good foaming properties were noted.In addition, an addition of 0.4 g of water, 0.1 g of surfactant, and 0.1 g of catalyst with respect to the composites of polyol at 5 g and isocyanate at 6 g showed the lowest apparent density and thermal conductivity.The pore size was smaller in the organic -inorganic hybrid foaming body with an increase in the CaCO 3 addition amount.Moreover, the apparent density and thermal conductivity were increased when the added amount of CaCO 3 increased.Increasing the amount of CaCO 3 powder is expected to improve the flame retardant capabilities; however, doing this tends to increase the apparent density and thermal conductivity.