UV-resistant and alkaline-resistant borosilicate glass and use thereof
Disclosed is a type of borosilicate glass, the composition of which, based on oxides, contains the following components by weight percentage (wt %): 2.0 wt %-5.0 wt % of TiO 2 , 0.25 wt %-2.5 wt % of CeO 2 and 0.25 wt %-3.0 wt % of Y 2 O 3 , and does not contain any iron compound, such as ferric oxide. The glass has better UV resistance and alkaline resistance properties, and a better light transmission rate, and is particularly suitable for use in the field of pharmaceutical packaging materials.
1. A borosilicate glass comprising the following constituents based on oxide: 2.0-5.0 wt % of TiO 2 , 0.25-2.5 wt % of CeO 2 , 0.25-3.0 wt % of Y 2 O 3 , wherein the borosilicate glass is free of an iron compound, and wherein the borosilicate glass is free of As 2 O 3 and Sb 2 O 3 apart from inevitable impurities.
2. The borosilicate glass of claim 1 , wherein the total amount of SiO 2 , TiO 2 , and CeO 2 is not less than 72.0 wt %.
3. The borosilicate glass of claim 1 , further comprising the following constituents: 65.0-75.0 wt % of SiO 2 , 6.0-12.0 wt % of B 2 O 3 , 3.5-6.5 wt % of Al 2 O 3 ; and the total amount of Na 2 O, K 2 O and Li 2 O is 5.5-9.5 wt %; and the total amount of CaO, MgO and BaO is 1.0-5.5 wt %.
4. The borosilicate glass of claim 1 , wherein the total amount of Na 2 O, K 2 O and Li 2 O is 5.5-9.5 wt %; the total amount of CaO, MgO and BaO is 1.0-5.5 wt %; and the total amount of SiO 2 , TiO 2 and CeO 2 is not less than 72.0 wt %.
5. The borosilicate glass of claim 1 , wherein the amount of CeO 2 is 0.5-1.5 wt %.
6. The borosilicate glass of claim 1 , wherein the amount of CeO 2 is 0.5-1.5 wt %, and the total amount of SiO 2 , TiO 2 , and CeO 2 is not less than 72.0 wt %.
7. The borosilicate glass of claim 1 , wherein the amount of CeO 2 is 0.5-1.5 wt %, the amount of SiO 2 is 65.0-75.0 wt %, the amount of B 2 O 3 is 6.0-12.0 wt %, the amount of Al 2 O 3 is 3.5-6.5 wt %; and the total amount of Na 2 O, K 2 O and Li 2 O is 5.5-9.5 wt %; and the total amount of CaO, MgO and BaO is 1.0-5.5 wt %.
8. The borosilicate glass of claim 1 , wherein the amount of CeO 2 is 0.5-1.5 wt %, the amount of SiO 2 is 65.0-75.0 wt %, the amount of B 2 O 3 is 6.0-12.0 wt %, the amount of Al 2 O 3 is 3.5-6.5 wt %; and the total amount of SiO 2 , TiO 2 and CeO 2 is not less than 72.0 wt %; the total amount of Na 2 O, K 2 O and Li 2 O is 5.5-9.5 wt %; and the total amount of CaO, MgO and BaO is 1.0-5.5 wt %.
9. The borosilicate glass of claim 1 , comprising the following constituents based on oxide:
SiO 2
65.0-75.0
wt %
B 2 O 3
6.0-12.0
wt %
Al 2 O 3
3.5-6.5
wt %
Na 2 O
4.5-8.5
wt %
K 2 O
0-2.5
wt %
Li 2 O
0-1.0
wt %
wherein Σ(Na 2 O + K 2 O + Li 2 O)
5.5-9.5
wt %
CaO
0.5-3.5
wt %
MgO
0-1.0
wt %
BaO
0-2.0
wt %
wherein Σ(CaO + MgO + BaO)
1.0-5.5
wt %
TiO 2
2.0-5.0
wt %
CeO 2
0.25-2.5
wt %
NaCl
0-1.0
wt %
Y 2 O 3
0.25-3.0
wt %
ZrO 2
0-4.0
wt %
ZnO
0-2.0
wt %
La 2 O 3
0-2.0
wt %.
10. The borosilicate glass of claim 9 , wherein the summation of the amounts of SiO 2 , TiO 2 and CeO 2 is ≥72.0 wt %.
11. The borosilicate glass of claim 1 , comprising the following constituents based on oxide:
SiO 2
68.5-72.5
wt %
B 2 O 3
8.0-10.0
wt %
Al 2 O 3
4.1-5.9
wt %
Na 2 O
5.5-7.0
wt %
K 2 O
0-1.0
wt %
Li 2 O
0-0.5
wt %
wherein Σ(Na 2 O + K 2 O + Li 2 O)
6.0-8.0
wt %
CaO
1.0-1.8
wt %
MgO
0-0.8
wt %
BaO
0.4-1.0
wt %
wherein Σ(CaO + MgO + BaO)
1.5-3.0
wt %
TiO 2
2.0-3.5%
wt %
CeO 2
0.5-1.5
wt %
NaCl
0-0.5
wt %
Y 2 O 3
0.5-2.0
wt %
ZrO 2
0-2.0
wt %
ZnO
0-1.0
wt %
La 2 O 3
0-1.0
wt %.
12. The borosilicate glass of claim 1 , comprising the following constituents based on oxide:
SiO 2
68.5-72.0
wt %
B 2 O 3
8.0-10.0
wt %
Al 2 O 3
4.6-5.9
wt %
Na 2 O
5.5-7.0
wt %
K 2 O
0-1.0
wt %
Li 2 O
0-0.5
wt %
wherein Σ(Na 2 O + K 2 O + Li 2 O)
6.0-8.0
wt %
CaO
1.0-1.8
wt %
MgO
0-0.8
wt %
BaO
0.4-1.0
wt %
wherein Σ(CaO + MgO + BaO)
1.5-3.0
wt %
TiO 2
2.0-3.0%
wt %
CeO 2
0.5-1.2
wt %
NaCl
0-0.5
wt %
Y 2 O 3
0.5-2.0
wt %
ZrO 2
0-2.0
wt %
ZnO
0-1.0
wt %
La 2 O 3
0-1.0
wt %.
13. The borosilicate glass of claim 1 , further comprising at least one of ZrO 2 , ZnO and La 2 O 3 in an amount from 0-1.0 wt %.
14. The borosilicate glass of claim 1 , having an ultraviolet-visible light transmittance T % less than 10% when the wavelength is ≤380 nm and a class 1 alkali resistance according to YBB00352004-2015.
15. The borosilicate glass of claim 1 , having an ultraviolet-visible light transmittance T % less than 10% when the wavelength is ≤380 nm, a class 1 alkali resistance according to YBB00352004-2015, a class 1 water resistance according to YBB00362004-2015 and a class 1 acid resistance according to YBB00342004-2015.
16. A process comprising using the borosilicate glass of claim 1 to prepare a packaging material for a pharmaceutical; or a container or a chemical device for a chemically corrosive liquid; or a sealing glass for an alloy.
17. The borosilicate glass of claim 12 , further comprising at least one of ZrO 2 , ZnO and La 2 O 3 in an amount from 0-1.0 wt %.
18. The borosilicate glass of claim 17 , having an ultraviolet-visible light transmittance T % less than 10% when the wavelength is ≤380 nm, a class 1 alkali resistance according to YBB00352004-2015, a class 1 water resistance according to YBB00362004-2015 and a class 1 acid resistance according to YBB00342004-2015.
19. A process comprising using the borosilicate glass of claim 18 to prepare a packaging material for a pharmaceutical; or a container or a chemical device for a chemically corrosive liquid; or a sealing glass for an alloy.