COMPOSITION OF CRYSTALLIZED GLASS AND PREPARATION METHOD THEREOF

A glass ceramic is composed of glass frit powder (1) and 1-10 wt.% - cordierite fine powder (2) with the average particle size of 0.01- 0.2 μm. The glass frit powder (1) contains 45-55 wt.% SiO2, 15- 25 wt.% Al2O3, 15-25 wt.% MgO, 0.4-0.5 wt.% CaO, 0.9-1.5 wt.% B2O3 and 1.4-1.5 wt.% P2O3. A weight r...

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Bibliographische Detailangaben
Hauptverfasser:	SON, YONG - BAE, JU, KI - TAE, KIM, JONG - DON, JANG, SONG - DO, YUN, BOK - GYU
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS LIME, MAGNESIA METALLURGY MINERAL OR SLAG WOOL REFRACTORIES SLAG SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	A glass ceramic is composed of glass frit powder (1) and 1-10 wt.% - cordierite fine powder (2) with the average particle size of 0.01- 0.2 μm. The glass frit powder (1) contains 45-55 wt.% SiO2, 15- 25 wt.% Al2O3, 15-25 wt.% MgO, 0.4-0.5 wt.% CaO, 0.9-1.5 wt.% B2O3 and 1.4-1.5 wt.% P2O3. A weight ratio of coarse glass frit powder to fine glass frit powder is 1:1.5-2.5. The above powder is molded by pressure molding method or doctor blade molding method, and it is heated to the temperature range of 800-1000 deg.C at a rate of 180-360 deg.C/hr, maintained for 20-120 min, and cooled at a rate of 120-240 deg.C/hr.