Patent ID: 11932576
Assignee: TUNGHSU TECHNOLOGY GROUP CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 5:
6. A method of preparing aluminosilicate glass, the method comprising:
providing raw materials that are required by the aluminosilicate glass composition to make the aluminosilicate glass comprising:
69-72 mol % of SiO2;
12-14 mol % of Al2O3;
0-2 mol % of B2O3;
4-7 mol % of MgO;
4-7 mol % of CaO;
0-2 mol % of SrO;
3-6 mol % of BaO;
0.5-1.5 mol % of ZnO;
0.1-1.5 mol % of RE2O3;
less than 0.05 mol % of R2O;
wherein RE represents rare earth elements, and R represents alkali metals;

mixing the raw materials to obtain a mixture M1;
adding NH 4 NO 3 into the mixture M1 to obtain a mixture M2;
performing a melting treatment on the mixture M2;
performing an annealing treatment on the mixture M2; and
performing a machining treatment on the mixture M2,
thereby preparing the aluminosilicate glass,
wherein based on 100 g of the obtained aluminosilicate glass, the addition amount of NH4NO3 is 5-15 g.