High modulus glass fibre composition, and glass fibre and composite material thereof
A high modulus glass fiber composition, and a glass fiber and a composite material thereof. The glass fiber composition comprises the following components expressed as percentage by weight: 53-68% of SiO 2 , 13-24.5% of Al 2 O 3 , 0.1-8% of Y 2 O 3 +La 2 O 3 , less than 1.8% of La 2 O 3 , 10-23% of CaO+MgO+SrO, less than 2% of Li 2 O+Na 2 O+K 2 O, and less than 1.5% of Fe 2 O 3 , and the range of a weight percentage ratio C1 is more than 0.5, wherein C1=Y 2 O 3 /(Y 2 O 3 +La 2 O 3 ). The composition significantly increases the elastic modulus of glass, significantly reduces the liquidus temperature and the forming temperature of glass, and under equal conditions, significantly reduces the crystallization rate and the bubble rate of glass. The composition effectively improves the material properties of glass, and is particularly suitable for the tank furnace production of a high modulus glass fiber having a low bubble rate.
1. A composition for producing a high modulus glass fiber, comprising the following components with corresponding percentage amounts by weight:
SiO 2
53-68%
Al 2 O 3
13-24.5%
Y 2 O 3 + La 2 O 3
0.1-8%
La 2 O 3
0.05-1.7%
CaO + MgO + SrO
10-23%
Li 2 O + Na 2 O + K 2 O
<2%
Fe 2 O 3
<1.5%
wherein
a weight percentage ratio C1=Y 2 O 3 /(Y 2 O 3 +La 2 O 3 ) is greater than 0.5.
2. The composition of claim 1 , wherein a weight percentage ratio C1=Y 2 O 3 /(Y 2 O 3 +La 2 O 3 ) is greater than 0.55.
3. The composition of claim 1 , wherein a weight percentage ratio C1=Y 2 O 3 /(Y 2 O 3 +La 2 O 3 ) is between 0.7 and 0.95.
4. The composition of claim 1 , wherein a weight percentage ratio C2=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.2.
5. The composition of claim 1 , comprising between 1.5 and 6 wt. % of Y 2 O 3 +La 2 O 3 .
6. The composition of claim 1 , comprising between 0.1 and 1.5 wt. % of Li 2 O.
7. The composition of claim 1 , comprising between 8.1 and 12 wt. % of MgO.
8. The composition of claim 1 , comprising greater than 12 and less than or equal to 14 wt. % of MgO.
9. The composition of claim 1 , comprising less than 12 wt. % of CaO.
10. The composition of claim 1 , comprising between 2 and 11 wt. % of CaO.
11. The composition of claim 1 , comprising between 0.1 and 1.5 wt. % of SrO.
12. The composition of claim 1 , comprising the following components with corresponding percentage amounts by weight:
SiO 2
53-68%
Al 2 O 3
13-24.5%
Y 2 O 3 + La 2 O 3
0.1-8%
La 2 O 3
0.05-1.7%
CaO + MgO + SrO
10-23%
Li 2 O
0.1-1.5%
Li 2 O + Na 2 O + K 2 O
<2%
Fe 2 O 3
<1.5%
wherein
a weight percentage ratio C1=Y 2 O 3 /(Y 2 O 3 +La 2 O 3 ) is greater than 0.5; and
a weight percentage ratio C2=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.2.
13. The composition of claim 1 , comprising the following components with corresponding percentage amounts by weight:
SiO 2
53-68%
Al 2 O 3
13-24.5%
Y 2 O 3 + La 2 O 3
0.1-8%
Y 2 O 3
0.1-6.3%
La 2 O 3
0.05-1.7%
CaO + MgO + SrO
10-23%
Li 2 O + Na 2 O + K 2 O
<2%
Fe 2 O 3
<1.5%
wherein
a weight percentage ratio C1=Y 2 O 3 /(Y 2 O 3 +La 2 O 3 ) is greater than 0.5; and
a weight percentage ratio C2=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.2.
14. The composition of claim 1 , comprising the following components with corresponding percentage amounts by weight:
SiO 2
53-68%
Al 2 O 3
13-24.5%
Y 2 O 3 + La 2 O 3
0.5-7%
Y 2 O 3
0.1-6.3%
La 2 O 3
0.05-1.7%
CaO + MgO + SrO
10-23%
CaO
<12%
Li 2 O + Na 2 O + K 2 O
<2%
Fe 2 O 3
<1.5%
wherein
a weight percentage ratio C1=Y 2 O 3 /(Y 2 O 3 +La 2 O 3 ) is greater than 0.5; and
a weight percentage ratio C2=((Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.2.
15. The composition of claim 1 , comprising the following components with corresponding percentage amounts by weight:
SiO 2
53-68%
Al 2 O 3
13-24.5%
Y 2 O 3 + La 2 O 3
0.5-7%
Y 2 O 3
0.1-6.3%
La 2 O 3
0.05-1.7%
CaO + MgO + SrO
10-23%
CaO
2-11%
Li 2 O
0.1-1.5%
Li 2 O + Na 2 O + K 2 O
<2%
Fe 2 O 3
<1.5%
wherein
a weight percentage ratio C1=Y 2 O 3 /(Y 2 O 3 +La 2 O 3 ) is greater than 0.5; and
a weight percentage ratio C2=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.2.
16. The composition of claim 1 , comprising the following components with corresponding percentage amounts by weight:
SiO 2
54-64%
Al 2 O 3
14-24%
Y 2 O 3 + La 2 O 3
1.5-6%
Y 2 O 3
1-5.5%
La 2 O 3
0.1-1.5%
CaO + MgO + SrO
10-23%
CaO
2-11%
Li 2 O
0.1-1.5%
Li 2 O + Na 2 O + K 2 O
<2%
Fe 2 O 3
<1.5%
wherein
a weight percentage ratio C1=Y 2 O 3 /(Y 2 O 3 +La 2 O 3 ) is greater than 0.6; and
a weight percentage ratio C2=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.22.
17. The composition of claim 1 , comprising the following components with corresponding percentage amounts by weight:
SiO 2
53-68%
Al 2 O 3
greater than 19% and less than or equal to 23%
Y 2 O 3 + La 2 O 3
0.1-8%
La 2 O 3
0.05-1.7%
CaO + MgO + SrO
10-23%
MgO
<11%
Li 2 O + Na 2 O + K 2 O
<1%
Fe 2 O 3
<1.5%
wherein
a weight percentage ratio C1=Y 2 O 3 /(Y 2 O 3 +La 2 O 3 ) is greater than 0.5.
18. A glass fiber, being produced using the composition of claim 1 .
19. A composite material, comprising the glass fiber of claim 18 .