초록 ▼

Hollow glass microspheres made from a low heat conductivity glass composition containing a high vacuum and a thin metal coating deposited on the inner wall surface of the microspheres are described. The hollow glass microspheres are used to make superior insulation materials in the construction of h

Hollow glass microspheres made from a low heat conductivity glass composition containing a high vacuum and a thin metal coating deposited on the inner wall surface of the microspheres are described. The hollow glass microspheres are used to make superior insulation materials in the construction of highly efficient solar energy collectors. The hollow glass microspheres can also be made to contain a thin transparent or reflective metal coating deposited on the inner wall surface of the microspheres by adding to the blowing gas small dispersed metal particles and/or gases of organo metal compounds and decomposing the organo metal compounds. The hollow glass microspheres can be made from low heat conductivity glass compositions. The microspheres can be used to make improved insulation materials and composites and insulating systems. The hollow glass microspheres can be used as filler materials in plastics, in plastic foam compositions and in concrete and asphalt compositions. The hollow glass microspheres can also be made in the form of filamented glass microspheres with a thin glass filament connecting adjacent glass microspheres.

대표청구항 ▼

A solar energy collector comprising an outer transparent cover and an inner cover, and having disposed therebetween a black coated heat absorber and at least one heat exchange medium tube, wherein said outer cover consists of a transparent sheet or panel comprising a mass of hollow glass microsphere

A solar energy collector comprising an outer transparent cover and an inner cover, and having disposed therebetween a black coated heat absorber and at least one heat exchange medium tube, wherein said outer cover consists of a transparent sheet or panel comprising a mass of hollow glass microspheres cemented together by fusion or sintering or bonded together with an organic or inorganic bonding agent or adhesive, said microspheres being of substantially uniform diameter of 500 to 6,000 microns and of substantially uniform wall thickness of 0.5 to 400 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections, sealing tips and bubbles.