Alkali-free silicate glass and preparation method and application thereof
A technology of silicate glass and alkali silicate, which is applied in glass manufacturing equipment, glass production, glass molding, etc., and can solve the problems of reduced mechanical strength and easy deformation of glass
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Embodiment 1-8
[0049] Weigh each component according to the glass composition shown in Table 1, mix well, pour 1Kg of the mixture into a platinum crucible, then heat in a resistance furnace at 1620°C for 7 hours, and stir with a platinum rod to remove air bubbles. Pour the molten glass into a stainless steel cast iron mold to form a specified block glass product, then anneal the glass product in an annealing furnace for 1 hour, turn off the power and cool down to 25°C with the furnace. The glass product is cut, ground, polished, cleaned with deionized water and dried to obtain a finished glass product. Various properties of each glass product were measured respectively, and the results are shown in Table 1.
[0050] Table 1
[0051]
[0052]
Embodiment 9-13
[0054] Weigh each component according to the glass composition shown in Table 2, mix well, pour 1Kg of the mixture into a platinum crucible, then heat in a resistance furnace at 1620°C for 7 hours, and stir with a platinum rod to remove air bubbles. Pour the molten glass into a stainless steel cast iron mold to form a specified block glass product, then anneal the glass product in an annealing furnace for 1 hour, turn off the power and cool down to 25°C with the furnace. The glass product is cut, ground, polished, cleaned with deionized water and dried to obtain a finished glass product. Various properties of each glass product were measured respectively, and the results are shown in Table 2.
[0055] Table 2
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[0057]
[0058] From the data of each embodiment in the table 1-2 as can be known, the method of the present invention utilizes the SiO that contains specific content 2 、Al 2 o 3 , B 2 o 3 , MgO, CaO, SrO, BaO, TiO 2 、 Ta 2 o 5 and Tl 2 o 3 The...
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