| 摘要 |
PURPOSE: Provided is an antibacterial glass ceramic composition with high porosity and surface area, and high far-infrared emission efficiency at room temperature so that it is used for bowls, sanitary fixture and food storage cases. CONSTITUTION: The preparation method comprises the steps of: reacting Ag2O Li2CO3, CaCO3, TiO2(anatase) with H3PO4 to be the composition of 0-5Ag2O, 0-5LiO2, 30-40CaO, 10-25TiO2, 20-30P2O5 in a molar ratio; adding 0.3-1.5wt.% of CuO to give a far-infrared emission effect with water for a slurry, and drying; grinding to powders less than 300mesh; heating at 700-900deg.C for 1hr. and melting 1250-1350deg.C; quenching by pouring the melt on a heated graphite plate to get a mother glass; forming nuclei by heating at 600-620deg.C for 5-20hrs.; crystallizing at 720-740deg.C for 10-20hrs.; soaking in an acidic solution for 1-5hrs. to elute crystalline Ca3(PO4)2.
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