Alkaline aluminosilicate protective glass capable of realizing ion exchange and preparation method thereof
An ion exchange and aluminosilicate technology, applied in the field of glass production, can solve the problems of shallow depth of ion exchange layer and insufficient surface compressive stress, and achieve the effect of reducing fuel consumption and pollution
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Embodiment 1
[0038] An ion-exchangeable alkali aluminosilicate protective glass, calculated by the total mass percentage, its components include: 61.65% SiO 2 , 19.51% Al 2 O 3 , 4.15% B 2 O 3 , 12.95% Na 2 O, 0.01% K 2 O, 1.46% MgO, 0.03% CaO and 0.23% SnO 2 .
[0039] The thin glass obtained according to the above steps 1 to 3, at 390 ° C KNO 3 Place in molten chemical strengthening solution for 7h. After the chemically strengthened glass sample was wiped clean, it was placed on a prism coated with refraction liquid. The surface compressive stress of the sample after strengthening was 907.3 MPa, and the depth of the strengthened ion exchange layer was 61.5 μm as measured by the surface stress meter.
Embodiment 2
[0041] An ion-exchangeable alkaline aluminosilicate protective glass, calculated by the total mass percentage, its components include: 62.9% SiO 2 , 15% Al 2 O 3 , 1.0% B 2 O 3 , 13.0% Na 2 O, 5.0% K 2 O, 3.0% MgO, and 0.1% SnO 2 .
[0042] The thin glass obtained according to the above steps 1 to 3, at 410 ° C KNO 3 Place in molten chemical strengthening solution for 6h. After the chemically strengthened glass sample was wiped clean, it was placed on a prism coated with refraction liquid. The surface compressive stress of the sample after strengthening was 893.7MPa measured by a surface stress meter, and the depth of the strengthened ion exchange layer was 63.2μm.
Embodiment 3
[0044] An ion-exchangeable alkaline aluminosilicate protective glass, calculated by the total mass percentage, its components include: 62.58% SiO 2 , 16.89% Al 2 O 3 , 4.59% B 2 O 3 , 13.36% Na 2 O, 0.01% K 2 O, 1.9% MgO, 0.27% CaO and 0.4% SnO 2 .
[0045] The thin glass obtained according to the above steps 1 to 3, at 440 ° C KNO 3 Place in molten chemical strengthening solution for 5h. After the chemically strengthened glass sample was wiped clean, it was placed on a prism coated with a refraction liquid. The surface compressive stress of the sample after strengthening was 853.6 MPa, and the depth of the strengthened ion exchange layer was 57.3 μm as measured by a surface stress meter.
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