초록 ▼

Cellular glass structures are made by foaming select silicone resins. A foaming agent is reacted together with the silicone resin to form a foam that carries the resin as a continuous separate phase distributed throughout the foam. The foaming agent is removed by decomposition, and the remaining sil

Cellular glass structures are made by foaming select silicone resins. A foaming agent is reacted together with the silicone resin to form a foam that carries the resin as a continuous separate phase distributed throughout the foam. The foaming agent is removed by decomposition, and the remaining silicone resin is crosslinked to retain the foamed structure. The silicone resin is then heated in a non-oxidizing atmosphere at a temperature that will pyrolize the resin. During pyrolysis, the resin densifies to foam a unique glass composition comprised of silicon, oxygen and carbon, where carbon is chemically bonded to silicon, but there are essentially no chemical bonds between carbon and oxygen.

대표청구항 ▼

A method for preparing a cellular glass structure comprising: foaming an intimate mixture of a precursor resin and a foaming agent to form a carrier foam with the resin disposed throughout the carrier foam as a continuous separate phase, the resin being formed into a foamed structure; crosslinking t

A method for preparing a cellular glass structure comprising: foaming an intimate mixture of a precursor resin and a foaming agent to form a carrier foam with the resin disposed throughout the carrier foam as a continuous separate phase, the resin being formed into a foamed structure; crosslinking the resin to retain the foamed structure without the support of the carrier foam; heating the foamed structure to remove the carrier foam by decomposition of the carrier foam; and heating the foamed precursor resin in a non-oxidizing atmosphere at a temperature that will pyrolize the resin, the heating of the precursor resin being performed for a period of time ending when weight loss from the pyrolizing resin substantially ends, the pyrolized resin forming a cellular glass structure that remains structurally stable at temperatures up to at least 1650°C.