A composite material includes, in an exemplary embodiment a polyurethane foam and a plurality of inorganic particles dispersed therein. The polyurethane foam is formed from a reaction mixture that includes a first polyether polyol having a first molecular weight and a functionality of about 3 or less, a second polyether polyol having a second molecular weight less than the first molecular weight and a functionality of greater than about 3, and at least one isocyanate. The ratio of an amount of the first polyol in the reaction mixture to an amount of the second polyol in the reaction mixture is between about 1:1 to about 5:1.