Glass fiber composition, glass fiber and composite material thereof
A composition for producing a glass fiber, including the following components with corresponding percentage amounts by weight: SiO 2 : 57.4-60.9%; Al 2 O 3 : greater than 17% and less than or equal to 19.8%; MgO: greater than 9% and less than or equal to 12.8%; CaO: 6.4-11.8%; SrO: 0-1.6%; Na 2 O+K 2 O: 0.1-1.1%; Fe 2 O 3 : 0.05-1%; TiO 2 : lower than 0.8%; and SiO 2 +Al 2 O 3 : lower than or equal to 79.4%. The total weight percentage of the above components in the composition is greater than 99%. The weight percentage ratio of Al 2 O 3 +MgO to SiO 2 is between 0.43 and 0.56, and the weight percentage ratio of CaO+MgO to SiO 2 +Al 2 O 3 is greater than 0.205. The composition can significantly increase the glass modulus, effectively reduce the glass crystallization rate, secure a desirable temperature range (ΔT) for fiber formation and enhance the refinement of molten glass, thus making it particularly suitable for high performance glass fiber production with refractory-lined furnaces.
1. A composition for producing a glass fiber, comprising the following components with corresponding percentage amounts by weight:
SiO 2
57.4-60.9%
Al 2 O 3
>17% and ≤19.8%
MgO
>9% and ≤12.8%
CaO
8.1-10.85%
SrO
0%
Na 2 O + K 2 O
0.1-1.1%
Fe 2 O 3
0.05-1%
TiO 2
<0.8%
SiO 2 + Al 2 O 3
≤79.4%
wherein
a total weight percentage e f the above components is greater than 99%;
a weight percentage ratio C1=(Al 2 O 3 +MgO)/SiO 2 is between 0.43 and 0.56; and
a weight percentage ratio C2=(CaO+MgO)/(SiO 2 +Al 2 O 3 ) greater than 0.205.
2. The composition of 1 , comprising the following components with corresponding percentage amounts by weight:
SiO 2
58.1-60.5%
Al 2 O 3
17.1-18.8%
MgO
9.1-12.5%
CaO
8.1-10.85%
SrO
0%
Na 2 O + K 2 O
0.15-1%
Li 2 O
0-0.75%
Fe 2 O 3
0.05-1%
TiO 2
<0.8%
SiO 2 + Al 2 O 3
≤79%
wherein
a total weight percentage of the above components is greater than 99.5%;
a weight percentage ratio C1=(Al 2 O 3 +MgO)/SiO 2 is between 0.435 and 0.525; and
a weight percentage ratio C2=(CaO+MgO)/(SiO 2 +Al 2 O 3 ) is between 0.215 and 0.295.
3. The composition of claim 1 , comprising the following components with corresponding percentage amounts by weight:
SiO 2
58.1-60.5%
Al 2 O 3
17.1-18.8%
MgO
9.1-11.8%
CaO
8.1-10.85%
SrO
0%
Na 2 O + K 2 O
0.15-1%
Li 2 O
0-0.75%
Fe 2 O 3
0.05-1%
TiO 2
<0.8%
F 2
<0.4%
SiO 2 + Al 2 O 3
75.4-79%
wherein
a weight percentage ratio C1=(Al 2 O 3 +MgO)/SiO 2 is between 0.435 and 0.525; and
a weight percentage ratio C2=(CaO+MgO)/(SiO 2 +Al 2 O 3 ) is between 0.215 and 0.295.
4. The composition of claim 1 , wherein a combined weight percentage Al 2 O 3 +MgO is between 26.1% and 31%.
5. The composition of claim 1 , wherein a weight percentage ratio C3=(MgO+SrO)/CaO is between 0.8 and 1.6.
6. The composition of claim 1 , comprising between 58.1 and 59.9 wt. % of SiO 2 .
7. The composition of claim 1 , further comprising less than 1 wt. % of Li 2 O, ZrO 2 , CeO 2 , B 2 O 3 and F 2 , or a mixture thereof.
8. The composition of claim 1 , further comprising no more than 0.55 wt. % of Li 2 O.
9. The composition of claim 1 , wherein, when the weight percentage ratio (CaO+MgO)/Al 2 O 3 is greater than 1 and the weight percentage ratio (MgO+SrO)/CaO is greater than 0.9, the composition is free of Li 2 O.
10. The composition of claim 1 , comprising no more than 0.65 wt. % of Na 2 O.
11. The composition of claim 1 , comprising MgO with a weight percentage greater than 11% and less than or equal to 12.5%.
12. The composition of claim 2 , comprising the following components with corresponding percentage amounts by weight:
SiO 2
58.1-59.9%
Al 2 O 3
17.1-18.8%
MgO
9.1-11.8%
CaO
8.1-10.85%
wherein the composition has a liquidus temperature lower than or equal to 1250° C.
13. A glass fiber, being produced using the composition of claim 1 .
14. A composite material, comprising the lass fiber of claim 13 .