High-modulus glass fiber composition, glass fiber and composite material therefrom
The present invention provides a high-modulus glass fiber composition, a glass fiber and a composite material therefrom. The glass fiber composition comprises the following components expressed as percentage by weight: 55-64% SiO 2 , 13-24% Al 2 O 3 , 0.1-6% Y 2 O 3 , 3.4-10.9% CaO, 8-14% MgO, lower than 22% CaO+MgO+SrO, lower than 2% Li 2 O+Na 2 O+K 2 O, lower than 2% TiO 2 , lower than 1.5% Fe 2 O 3 , 0-1.2% La 2 O 3 , wherein the range of the weight percentage ratio C1=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.26. Said composition can significantly increase the glass elastic modulus, effectively inhibit the crystallization tendency of glass, decrease the liquidus temperature, secure a desirable temperature range (ΔT) for fiber formation and enhance the fining of molten glass, thus making it particularly suitable for production of high-modulus glass fiber with refractory-lined furnaces.
1. A high-modulus glass fiber composition, comprising the following components expressed as percentage by weight:
SiO 2
55-64%
Al 2 O 3
16.7-24%
Y 2 O 3
0.1-2.4%
CaO
3.4-10.9%
MgO
9.4-14%
CaO + MgO + SrO
<22%
Li 2 O + Na 2 O + K 2 O
<2%
TiO 2
<2%
Fe 2 O 3
<1.5%
La 2 O 3
0-1.2%
wherein, the range of the weight percentage ratio C1=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.26.
2. The high-modulus glass fiber composition according to claim 1 , wherein the content range of Li 2 O by weight is 0.1-1.5%.
3. The high-modulus glass fiber composition according to claim 1 , wherein the content range of SrO by weight is 0.1-2.5%.
4. The high-modulus glass fiber composition according to claim 1 , wherein the content range of CaO by weight is 6-10.3%.
5. The high-modulus glass fiber composition according to claim 1 , wherein the content range of MgO by weight is 9.4-13%.
6. The high-modulus glass fiber composition according to claim 1 , wherein the content range of La 2 O 3 by weight is 0.1-1%.
7. The high-modulus glass fiber composition according to claim 1 , comprising CeO 2 with the weight percentage of 0-1%.
8. The high-modulus glass fiber composition according to claim 1 , wherein the range of the weight percentage ratio C2=MgO/(CaO+SrO) is 0.8-2.1.
9. The high-modulus glass fiber composition according to claim 8 , wherein the content range of Y 2 O 3 by weight is 0.5-2.4%.
10. The high-modulus glass fiber composition according to claim 8 , wherein the content range of Y 2 O 3 by weight is 1.5-2.4%.
11. A glass fiber, characterized by, being produced from the glass fiber compositions according to claim 1 .
12. The glass fiber according to claim 11 , characterized by, having the range of the elastic modulus 90-103 GPa.
13. A composite material, characterized by, incorporating the glass fiber according to claim 11 .
14. The high-modulus glass fiber composition according to claim 1 , comprising the following components expressed as percentage by weight:
SiO 2
56-60.4%
Al 2 O 3
16.7-24%
Y 2 O 3
0.1-2.4%
CaO
3.4-10.9%
MgO
9.4-14%
CaO + MgO + SrO
<22%
SrO
<3%
Li 2 O + Na 2 O + K 2 O
<2%
TiO 2
<2%
Fe 2 O 3
<1.5%
La 2 O 3
0-1.2%
wherein, the range of the weight percentage ratio C1=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.26.
15. The high-modulus glass fiber composition according to claim 1 , comprising the following components expressed as percentage by weight:
SiO 2
56-60.4%
Al 2 O 3
16.7-24%
Y 2 O 3
0.5-2.4%
CaO
3.4-10.9%
MgO
9.4-14%
CaO + MgO + SrO
<22%
SrO
<3%
Li 2 O
0.1-1.5%
Li 2 O + Na 2 O + K 2 O
<2%
TiO 2
<2%
Fe 2 O 3
<1.5%
La 2 O 3
0-1.2%
wherein, the range of the weight percentage ratio C1=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.26, and the weight percentage ratio C2=MgO/(CaO+SrO) is 0.8-2.1.
16. The high-modulus glass fiber composition according to claim 1 , comprising the following components expressed as percentage by weight:
SiO 2
56-60.4%
Al 2 O 3
16.7-24%
Y 2 O 3
0.5-2.4%
CaO
3.4-10.9%
MgO
9.4-14%
CaO + MgO + SrO
<22%
SrO
<3%
Li 2 O
0.1-1.5%
Li 2 O + Na 2 O + K 2 O
<2%
TiO 2
<2%
Fe 2 O 3
<1.5%
La 2 O 3
0-1.2%
wherein, the range of the weight percentage ratio C1=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.28, and the weight percentage ratio C2=MgO/(CaO+SrO) is 0.8-2.1.
17. The high-modulus glass fiber composition according to claim 1 , comprising the following components expressed as percentage by weight:
SiO 2
57-60.4%
Al 2 O 3
16.7-24%
Y 2 O 3
0.5-2.4%
CaO
5-10.6%
MgO
9.4-14%
CaO + MgO + SrO
<21%
SrO
<3%
Li 2 O
0.1-1%
Li 2 O + Na 2 O + K 2 O
<2%
TiO 2
<2%
Fe 2 O 3
<1.5%
La 2 O 3
0-1.2%
wherein, the range of the weight percentage ratio C1=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.28, and the weight percentage ratio C2=MgO/(CaO+SrO) is 0.8-2.1.
18. The high-modulus glass fiber composition according to claim 1 , comprising the following components expressed as percentage by weight:
SiO 2
57-60.4%
Al 2 O 3
16.7-23%
Y 2 O 3
1.5-2.4%
CaO
6-10.3%
MgO
9.4-13%
CaO + MgO + SrO
<21%
SrO
<3%
Li 2 O
0.1-1%
Li 2 O + Na 2 O + K 2 O
<2%
TiO 2
<2%
Fe 2 O 3
<1.5%
La 2 O 3
0-1.2%
wherein, the range of the weight percentage ratio C1=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.29, and the weight percentage ratio C2=MgO/(CaO+SrO) is 0.9-1.8.
19. The high-modulus glass fiber composition according to claim 1 , comprising the following components expressed as percentage by weight:
SiO 2
57-60.4%
Al 2 O 3
16.7-23%
Y 2 O 3
1.5-2.4%
CaO
6-10.3%
MgO
9.4-13%
CaO + MgO + SrO
<21%
SrO
<3%
Li 2 O
0.1-1%
Li 2 O + Na 2 O + K 2 O
<2%
TiO 2
<2%
Fe 2 O 3
<1.5%
La 2 O 3
0-1.2%
wherein, the range of the weight percentage ratio C1=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.29, and the weight percentage ratio C2=MgO/(CaO+SrO) is 0.9-1.7.
20. The high-modulus glass fiber composition according to claim 1 , comprising the following components expressed as percentage by weight:
SiO 2
55-64%
Al 2 O 3
greater than 19% and not greater than 21%
Y 2 O 3
0.1-2.4%
CaO
3.4-10.9%
MgO
9.4-10.5%
CaO + MgO + SrO
<22%
Li 2 O + Na 2 O + K 2 O
≤1%
TiO 2
<2%
Fe 2 O 3
<1.5%
La 2 O 3
0-1.2%
wherein, the range of the weight percentage ratio C1=(Li 2 O+Na 2 O+K 2 O)/(Y 2 O 3 +La 2 O 3 ) is greater than 0.26.