A color-stable, antimicrobial glass powder obtained by partial ion exchange at a temperature of 300° C. to 350° C. and an exchange time of 1 to 120 minutes, is formed of a mixture of porous glass particles having micropores and macropores made of borosilicate glass continuously foamed by extrusion having a Fe.sub.2O.sub.3 content <0.2 wt %, in which the obtained glass foam is subsequently comminuted by dry grinding to average particle sizes of 1.0 to 8.0 μm. The mixture includes color stabilizers containing 0.1% to 0.2% of ammonium ions and antimicrobial metal ions from dissolved metal salts, wherein the metal ions may be silver and/or zinc and/or copper ions. A method for the production of a color-stable, antimicrobial glass powder and applications for using the color-stable, antimicrobial glass powder are also provided.

The present invention relates to functionalized hollow glass microspheres for recovering fine hydrophobic particles, and to their preparation method. The invention also relates to a system for carrying out the method for preparing the functionalized microspheres, to a method for selectively recovering fine material and, lastly, to the use of the microspheres in the separation of, inter alia, minerals, micro drops of organic materials, plastics, and pollutants.

A glass filler powder includes a bubble therein, a volume fraction of the bubble being from 0.2% to 2%.

A method of forming an insulation material for a vacuum insulated structure includes heating glass flakes to at least a glass transition temperature of the glass flakes to induce a phase separation of the glass into an acid insoluble silica phase and an acid soluble phase. The glass flakes can be derived from a glass composition containing (by weight): SiO.sub.2 from about 40% to about 80%, B.sub.2O.sub.3 from about 10% to about 40%, Na.sub.2O from about 1% to about 10%, Li.sub.2O from about 0% to about 3%, CaO from about 0% to about 10%, ZnO from about 0% to about 5%, P.sub.2O.sub.5 from about 0% to about 10%, and Al.sub.2O.sub.3 from about 0% to about 10%. The method also includes a step of etching the glass flakes to dissolve the acid soluble phase to form porous glass flakes.

A method of forming an insulation material for a vacuum insulated structure includes heating glass flakes to at least a glass transition temperature of the glass flakes to induce a phase separation of the glass into an acid insoluble silica phase and an acid soluble phase. The glass flakes can be derived from a glass composition containing (by weight): SiO.sub.2 from about 40% to about 80%, B.sub.2O.sub.3 from about 10% to about 40%, Na.sub.2O from about 1% to about 10%, Li.sub.2O from about 0% to about 3%, CaO from about 0% to about 10%, ZnO from about 0% to about 5%, P.sub.2O.sub.5 from about 0% to about 10%, and Al.sub.2O.sub.3 from about 0% to about 10%. The method also includes a step of etching the glass flakes to dissolve the acid soluble phase to form porous glass flakes.

Provided is an alkali-resistant porous glass member suitable as a gas sensor element. A porous glass member contains, in terms of % by mass, over 0% ZrO.sub.2+TiO.sub.2+Al.sub.2O.sub.3+BeO+Cr.sub.2O.sub.3+Ga.sub.2O.sub.3+CeO.sub.2 and has a light transmittance of over 1% at any one of wavelengths from 200 to 2600 nm at a thickness of 0.5 mm.

Provided is an alkali-resistant porous glass member suitable as a gas sensor element. A porous glass member contains, in terms of % by mass, over 0% ZrO.sub.2+TiO.sub.2+Al.sub.2O.sub.3+BeO+Cr.sub.2O.sub.3+Ga.sub.2O.sub.3+CeO.sub.2 and has a light transmittance of over 1% at any one of wavelengths from 200 to 2600 nm at a thickness of 0.5 mm.

An evaporator is provided that includes a porous sintered body. The porous sintered body is formed by a composite of at least one electrically conductive material and at least one dielectric material. The sintered body has an open porosity in a range from 10 to 90% and an electrical conductivity in a range from 0.1 to 105 S/m. The fraction of electrically conductive material in the sintered body is a maximum of 90 wt. %.

A lightweight modified filter material, a preparation method therefor and use thereof, the lightweight modified filter material being prepared from the following components in parts by mass: 75-100 parts of waste glass, 5-20 parts of a metal oxide modifier and 1-10 parts of a foamer. The lightweight modified filter material has the advantages of being lightweight, having large specific surface area, a high isoelectric point, porosity and the like, increasing the isoelectric point and service life of the filter material. The added metal oxide can be combined with SiO2 in the glass to form Si—O-Me (Me metal ions) and enter the glass network.

The invention discloses porous, bioactive glass and glass ceramic morsels or pellets to be used as tissue graft substitute materials and processes for obtaining the same wherein the bioactive glass and glass ceramic morsels or pellets are made up of natural agents like phosphate, calcium, sodium and other elements which are not alien to the human or animal body. The said preparation process encompasses various steps like quenching sintering, foaming, and sol-gel casting which render the glass morsels or pellets unique bioactivity and enhanced porosity which may facilitate tissue repair and augmentation during tissue graft replacement.