Patent ID: 8883869
Filing Date: 2014-11-11
Classification: B29C,B29K,C08G,C08J,C08K,G01K,G01N

Abstract:
1. An impact absorbing foam comprising: a polymeric foam; and ceramic particulates dispersed in the polymeric foam; wherein the ceramic particulates have an average diameter in the range from about 1 to about 400 microns and a crushing strength in the range from about 100 to about 2,000,000 psi; wherein the ceramic particulates comprise a frangible material such that at least some of the ceramic particulates are crushed when impact energy is delivered to the foam, thereby providing an energy absorbing effect; wherein the ceramic particulates comprise alumino-silicate hollow spheres coated with sodium silicate; and wherein the impact absorbing foam comprises gas bubbles and/or void spaces that provide the impact absorbing foam with a volumetric expansion in the range from about 50% to about 400%.