Low-density high-performance glass fiber composition, glass fiber and composite material thereof
The present disclosure provides a low-density high-performance glass fiber composition, and a glass fiber and a composite. The glass fiber composition comprises the following components expressed as percentage by weight: SiO 2 : 58.1%-61.9%, Al 2 O 3 : >19.8% and ≤23%, MgO: 9.6%-12.7%, CaO: 4.1%-7.9%, SrO+Li 2 O: 0.05%-2.2%, SrO: 0%-2%, Li 2 O: 0%-0.39%, Na 2 O: 0.05%-1.0%, R 2 O=Na 2 O+K 2 O+Li 2 O: 0.2%-1.6%, Fe 2 O 3 : 0.05%-1%, TiO 2 : 0.01%-2%, B 2 O 3 : 0%-2%, ZrO 2 : 0%-2%, and SiO 2 +Al 2 O 3 : 78%-84%. The components have a total content of greater than or equal to 98.5%; a weight percentage ratio C1=SiO 2 /(CaO+Li 2 O) is greater than or equal to 7.05, a weight percentage ratio C2=(R 2 O+SrO)/Al 2 O 3 is greater than or equal to 0.012, and a weight percentage ratio C3=(MgO+SrO)/CaO is greater than or equal to 1.22. The glass fiber composition has the characteristics of low density and high modulus, and has higher specific modulus and specific strength, better lightweight level, and cost advantages.
1 . A low-density high-performance glass fiber composition, comprising the following components expressed as percentage by weight:
SiO 2
58.1-61.9%
Al 2 O 3
>19.8% and ≤23%
MgO
9.6-12.7%
CaO
4.1-7.9%
SrO + Li 2 O
0.05-2.2%
SrO
0-2%
Li 2 O
0-0.39%
Na 2 O
0.05-1.0%
R 2 O = Na 2 O + K 2 O + Li 2 O
0.2-1.6%
Fe 2 O 3
0.05-1%
TiO 2
0.01-2%
B 2 O 3
0-2%
ZrO 2
0-2%
SiO 2 + Al 2 O 3
78-84%
wherein a total content of the above components is greater than or equal to 98.5%; a weight percentage ratio C1=SiO 2 /(CaO+Li 2 O) is greater than or equal to 7.05, a weight percentage ratio C2=(R 2 O+SrO)/Al 2 O 3 is greater than or equal to 0.012, and a weight percentage ratio C3=(MgO+SrO)/CaO is greater than or equal to 1.22;
wherein the composition is free of rare earth oxides.
2 . The low-density high-performance glass fiber composition according to claim 1 , wherein a weight percentage ratio C4=SiO 2 /(Al 2 O 3 +Li 2 O) is greater than or equal to 2.64.
3 . The low-density high-performance glass fiber composition according to claim 1 , wherein a weight percentage ratio C5=(SiO 2 +Al 2 O 3 )/(CaO+R 2 O) is greater than or equal to 8.8.
4 . The low-density high-performance glass fiber composition according to claim 1 , wherein the weight percentage ratio C1=SiO 2 /(CaO+Li 2 O) is greater than or equal to 8.25.
5 . The low-density high-performance glass fiber composition according to claim 1 , wherein the weight percentage ratio C3=(MgO+SrO)/CaO is greater than 1.50.
6 . The low-density high-performance glass fiber composition according to claim 1 , wherein the weight percentage of CaO is 4.1%-6.9%.
7 . The low-density high-performance glass fiber composition according to claim 1 , wherein the weight percentage of SrO is 0.05%-2%.
8 . The low-density high-performance glass fiber composition according to claim 1 , comprising the following components expressed as percentage by weight:
SiO 2
58.4-61.5%
Al 2 O 3
>19.8% and ≤23%
MgO
9.6-12.7%
CaO
4.1-7.5%
SrO + Li 2 O
0.05-2.2%
SrO
0-2%
Li 2 O
0-0.39%
Na 2 O
0.05-1.0%
R 2 O = Na 2 O + K 2 O + Li 2 O
0.2-1.6%
Fe 2 O 3
0.05-1%
TiO 2
0.01-2%
B 2 O 3
0-2%
ZrO 2
0-2%
SiO 2 + Al 2 O 3
78.3-84%
CaO + MgO + R 2 O
≤20.3%
wherein the total content of the above components is greater than or equal to 98.5%; the weight percentage ratio C1=SiO 2 /(CaO+Li 2 O) is greater than or equal to 7.45, the weight percentage ratio C2=(R 2 O+SrO)/Al 2 O 3 is greater than or equal to 0.012, the weight percentage ratio C3=(MgO+SrO)/CaO is greater than or equal to 1.30, and the weight percentage ratio C4=SiO 2 /(Al 2 O 3 +Li 2 O) is greater than or equal to 2.60.
9 . The low-density high-performance glass fiber composition according to claim 1 , wherein the weight percentage of Li 2 O is 0.01%-0.35%.
10 . The low-density high-performance glass fiber composition according to claim 1 , comprising the following components expressed as percentage by weight:
SiO 2
58.1-61.9%
Al 2 O 3
>19.8% and ≤23%
MgO
9.6-12.7%
CaO
4.1-7.9%
SrO + Li 2 O
0.05-2.2%
SrO
0.01-2%
Li 2 O
0.01-0.35%
Na 2 O
0.05-1.0%
R 2 O = Na 2 O + K 2 O + Li 2 O
0.2-1.6%
Fe 2 O 3
0.05-1%
TiO 2
0.01-2%
B 2 O 3
0-2%
ZrO 2
0-2%
SiO 2 + Al 2 O 3
78-84%
wherein the total content of the above components greater than or equal to 98.5%; the weight percentage ratio C1=SiO 2 /(CaO+Li 2 O) is greater than or equal to 7.05, the weight percentage ratio C2=(R 2 O+SrO)/Al 2 O 3 is greater than or equal to 0.012, and the weight percentage ratio C3=(MgO+SrO)/CaO is greater than or equal to 1.22.
11 . The low-density high-performance glass fiber composition according to claim 1 , wherein the weight percentage of SiO 2 is 58.4%-60.45%.
12 . The low-density high-performance glass fiber composition according to claim 1 , wherein the weight percentage of Al 2 O 3 is greater than 19.8% and less than or equal to 20.45%.
13 . The low-density high-performance glass fiber composition according to claim 1 , comprising the following components expressed as percentage by weight:
SiO 2
58.8-60.45%
Al 2 O 3
>19.8% and ≤23%
MgO
9.6-12.5%
CaO
4.1-6.9%
SrO + Li 2 O
0.05-2.2%
SrO
0-2%
Li 2 O
0-0.39%
Na 2 O
0.05-1.0%
R 2 O = Na 2 O + K 2 O + Li 2 O
0.2-1.35%
Fe 2 O 3
0.05-1%
TiO 2
0.01-2%
B 2 O 3
0-2%
ZrO 2
0-2%
SiO 2 + Al 2 O 3
>79% and ≤83.3%
wherein the total content of the above components is greater than or equal to 98.5%; the weight percentage ratio C1=SiO 2 /(CaO+Li 2 O) is greater than or equal to 8.25, the weight percentage ratio C2=(R 2 O+SrO)/Al 2 O 3 is greater than or equal to 0.012, and the weight percentage ratio C3=(MgO+SrO)/CaO is greater than or equal to 1.40.
14 . The low-density high-performance glass fiber composition according to claim 1 , wherein the total content of SiO 2 , Al 2 O 3 , MgO, and CaO is less than 99%.
15 . The low-density high-performance glass fiber composition according to claim 1 , comprising the following components expressed as percentage by weight:
SiO 2
58.8-60.45%
Al 2 O 3
>19.8% and ≤23%
MgO
10-12.5%
CaO
4.1-6.9%
SrO + Li 2 O
0.05-2.2%
SrO
0.05-2%
Li 2 O
0-0.39%
Na 2 O
0.05-1.0%
R 2 O = Na 2 O + K 2 O + Li 2 O
0.2-1.35%
Fe 2 O 3
0.05-1%
TiO 2
0.01-2%
B 2 O 3
0-2%
ZrO 2
0-2%
SiO 2 + Al 2 O 3
>79% and ≤83.3%
CaO + MgO + R 2 O
≤19.6%
wherein the total content of the above components is greater than or equal to 98.5%; the weight percentage ratio C1=SiO 2 /(CaO+Li 2 O) is greater than or equal to 8.25, the weight percentage ratio C2=(R 2 O+SrO)/Al 2 O 3 is greater than or equal to 0.012, the weight percentage ratio C3=(MgO+SrO)/CaO is greater than or equal to 1.40, and the weight percentage ratio C4=SiO 2 /(Al 2 O 3 +Li 2 O) is greater than or equal to 2.74.
16 . The low-density high-performance glass fiber composition according to claim 1 , wherein the composition is free of Li 2 O.
17 . The low-density high-performance glass fiber composition according to claim 1 , wherein the glass density of the composition is less than 2.60 g/cm 3 .
18 . A glass fiber, prepared by the glass fiber composition according to claim 1 .
19 . A composite material, incorporating the glass fiber according to claim 18 .