Borosilicate glass with high chemical resistance and application thereof
The invention discloses a borosilicate glass with high chemical resistance and an application thereof. The borosilicate glass contains 0.25-4.0 wt % of Y 2 O 3 based on the oxide. The borosilicate glass has a high chemical stability, a suitable linear thermal expansion coefficient and is suitable for use in the field of pharmaceutical packaging materials.
1. A borosilicate glass comprising the following constituents based on oxide:
SiO 2
70-77
wt %,
B 2 O 3
9.0-12
wt %,
Al 2 O 3
3.0-7.0
wt %,
Na 2 O
5.0-8.0
wt %,
K 2 O
0-2.0
wt %,
Li 2 O
0-1.0
wt %,
wherein Σ(Na 2 O + K 2 O + Li 2 O)
5.0-8.0
wt %,
CaO
0-3.0
wt %,
MgO
0-1.0
wt %,
BaO
0-2.0
wt %,
wherein Σ(CaO + MgO + BaO)
0-5.0
wt %,
CeO 2
0-1.0
wt %,
NaCl
0-1.0
wt %,
Y 2 O 3
0.25-4.0
wt %.
2. The borosilicate glass of claim 1 comprising at least one of La 2 O 3 , ZrO 2 , and ZnO in a total amount from 0.49 to 4.0 wt %, wherein the content of each oxide is independently from 0 to 4.0 wt %.
3. The borosilicate glass of claim 1 comprising at least one of La 2 O 3 , ZrO 2 , and ZnO in a total amount from 0.49 to 3.0 wt %%, wherein the content of each oxide is independently from 0 to 3.0 wt %.
4. The borosilicate glass of claim 1 , wherein the borosilicate glass is free of As 2 O 3 and/or Sb 2 O 3 apart from inevitable impurities.
5. The borosilicate glass of claim 1 , having a coefficient of linear thermal expansion α20/300 from 4.6×10 −6 /K to 5.2×10 −6 /K, a class 1 water resistance according to YBB00362004-2015, a class 1 acid resistance according to YBB00342004-2015, and/or a class 1 alkali resistance according to YBB00352004-2015.
6. A process of using the borosilicate glass of claim 1 , wherein the glass is melted and formed into an article for a packaging material for a pharmaceutical, a container or a chemical device for a chemically erosive liquid, a sealing glass for an alloy or a glass fiber.
7. The process of claim 6 , wherein the glass fiber is for reinforcing concrete.
8. A borosilicate glass comprising the following constituents based on oxide:
SiO 2
70-76
wt %,
B 2 O 3
9.0-11.5
wt %,
Al 2 O 3
3.5-6.5
wt %,
Na 2 O
5.0-7.0
wt %,
K 2 O
0-1.0
wt %,
Li 2 O
0-1.0
wt %,
wherein Σ(Na 2 O + K 2 O + Li 2 O)
6.5-8.0
wt %,
CaO
0-2.0
wt %,
MgO
0-1.0
wt %,
BaO
0-1.5
wt %,
wherein Σ(CaO + MgO + BaO)
0-4.5
wt %,
CeO 2
0-0.5
wt %,
Y 2 O 3
0.5-3.5
wt %.
9. The borosilicate glass of claim 8 , comprising at least one of La 2 O 3 , ZrO 2 , and ZnO in a total amount from 0.49 to 4.0 wt %, wherein the content of each oxide is independently from 0 to 4.0 wt %.
10. The borosilicate glass of claim 8 , comprising at least one of La 2 O 3 , ZrO 2 , and ZnO in a total amount from 0.49 to 3.0 wt %, wherein the content of each oxide is independently from 0 to 3.0 wt %.
11. The borosilicate glass of claim 8 , wherein the borosilicate glass is free of As 2 O 3 and/or Sb 2 O 3 apart from inevitable impurities.
12. The borosilicate glass of claim 8 , having a coefficient of linear thermal expansion α 20/300 from 4.6×10 −6 /K to 5.2×10 −6 /K, a class 1 water resistance according to YBB00362004-2015, a class 1 acid resistance according to YBB00342004-2015, and/or a class 1 alkali resistance according to YBB00352004-2015.
13. A process of using the borosilicate glass of claim 8 , wherein the glass is melted and formed into an article for a packaging material for a pharmaceutical, a container or a chemical device for a chemically erosive liquid, a sealing glass for an alloy or a glass fiber.
14. A borosilicate glass comprising the following constituents based on oxide:
SiO 2
71-75.5
wt %,
B 2 O 3
9.1-11.0
wt %,
Al 2 O 3
3.8-6.5
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
0-1.5
wt %,
MgO
0-0.5
wt %,
BaO
0.5-1.5
wt %,
wherein Σ(CaO + MgO + BaO)
0.5-3.5
wt %,
CeO 2
0-1.0
wt %,
NaCl
0-1.0
wt %,
Y 2 O 3
0.5-3.0
wt %.
15. The borosilicate glass of claim 14 , comprising at least one of La 2 O 3 , ZrO 2 , and ZnO in a total amount from 0.49 to 4.0 wt %, wherein the content of each oxide is independently from 0 to 4.0 wt %.
16. The borosilicate glass of claim 14 , comprising at least one of La 2 O 3 , ZrO 2 , and ZnO in a total amount from 0.49 to 3.0 wt %, wherein the content of each oxide is independently from 0 to 3.0 wt %.
17. The borosilicate glass of claim 14 , wherein the borosilicate glass is free of As 2 O 3 and/or Sb 2 O 3 apart from inevitable impurities.
18. The borosilicate glass of claim 14 , having a coefficient of linear thermal expansion α 20/300 from 4.6×10 −6 /K to 5.2×10 −6 /K, a class 1 water resistance according to YBB00362004-2015, a class 1 acid resistance according to YBB00342004-2015, and/or a class 1 alkali resistance according to YBB00352004-2015.
19. A process of using the borosilicate glass of claim 14 , wherein the glass is melted and formed into an article for a packaging material for a pharmaceutical, a container or a chemical device for a chemically erosive liquid, a sealing glass for an alloy or a glass fiber.