Abstract: The present invention relates to thermal interface materials comprising a filler dispersed in a polymer, wherein the filler has an average aggregate particle size of less than or equal to 1 micron. Preferably the filler is a synthetic alumina, such as fumed alumina.

Abstract: The present invention relates to thermal interface materials comprising a filler dispersed in a polymer, wherein the filler has an average aggregate particle size of less than or equal to 1 micron. Preferably the filler is a synthetic alumina, such as fumed alumina.

Abstract: A hybrid insulation material comprises of porous ceramic substrate material impregnated with nanoporous material and method of making the same is the topic of this invention. The porous substrate material has bulk density ranging from 6 to 20 lb/ft3 and is composed of about 60 to 80 wt % silica (SiO2) 20 to 40 wt % alumina (Al2O3) fibers, and with about 0.1 to 1.0 wt % boron-containing constituent as the sintering agent. The nanoporous material has density ranging from 1.0 to 10 lb/ft3 and is either fully or partially impregnated into the substrate to block the pores, resulting in substantial reduction in conduction via radiation and convention. The nanoporous material used to impregnate the fiber substrate is preferably formed from a precursor of alkoxysilane, alcohol, water, and an acid or base catalyst for silica aerogels, and from a precursor of aluminum alkoxide, alcohol, water, and an acid or base catalyst for alumina aerogels.

Abstract: A hybrid insulation material comprises of porous ceramic substrate material impregnated with nanoporous material and method of making the same is the topic of this invention. The porous substrate material has bulk density ranging from 6 to 20 lb/ft3 and is composed of about 60 to 80 wt % silica (SiO2) 20 to 40 wt % alumina (Al2O3) fibers, and with about 0.1 to 1.0 wt % boron-containing constituent as the sintering agent. The nanoporous material has density ranging from 1.0 to 10 lb/ft3 and is either fully or partially impregnated into the substrate to block the pores, resulting in substantial reduction in conduction via radiation and convention. The nanoporous material used to impregnate the fiber substrate is preferably formed from a precursor of alkoxysilane, alcohol, water, and an acid or base catalyst for silica aerogels, and from a precursor of aluminum alkoxide, alcohol, water, and an acid or base catalyst for alumina aerogels.

Abstract: A highly abrasion resistant and durable, low density ablator composition is provided that comprises a base silicone resin, silica microballoons as a filler, a catalyst, and a thinning fluid to control the viscosity of the base silicone resin. The density of the resulting composition is approximately 0.32 g/cc yet the composition has excellent abrasion resistance. Furthermore, the ratio of filler to base silicone resin, by weight, is approximately 0.91. The ablator composition is also RF (radio frequency) transparent, moisture resistant, and low cost. Methods of mixing the ablator composition and forming ablative structures are also provided.

Abstract: A highly abrasion resistant and durable, low density ablator composition is provided that comprises a base silicone resin, silica microballoons as a filler, a catalyst, and a thinning fluid to control the viscosity of the base silicone resin. The density of the resulting composition is approximately 0.32 g/cc yet the composition has excellent abrasion resistance. Furthermore, the ratio of filler to base silicone resin, by weight, is approximately 0.91. The ablator composition is also RF (radio frequency) transparent, moisture resistant, and low cost. Methods of mixing the ablator composition and forming ablative structures are also provided.