Glass composition for the manufacture of fibers and process
View Patent ↗Improved glass batch compositions and processes of fiberizing the compositions to form fibers are provided. The batch of the present composition can include: 40-60 wt % SiO 2 ; 15-50 wt % Al 2 O 3 ; 0-30 wt % MgO; 0-25 wt % CaO; 0-5 wt % Li 2 O; 0-9 wt % B 2 O 3 ; and 0-5 wt % Na 2 O. The fibers formed of the compositions may have a Young's modulus of greater than 82.7 GPa (12 MPSI). The fibers may also have good biosolubility (k dis ), of at least 100 ng/cm 2 /hour.
1. Glass fibers formed from a composition comprising:
40.0-54.0 wt. % SiO 2 ;
31.0-50.0 wt. % Al 2 O 3 ;
15.0-30.0 wt. % MgO;
0-14.0 wt. % CaO;
0-5.0 wt. % Na 2 O;
0-1.0 wt. % Fe 2 O 3 ;
0-1.0 wt. % TiO 2 ;
0-5.0 wt. % Li 2 O; and
0-9.0 wt. % B 2 O 3 ,
wherein the glass fibers are biosoluble with a k dis greater than 100.0 ng/cm 2 /hour.
2. The glass fibers of claim 1 , wherein the glass fibers have a k dis greater than 300.0 ng/cm 2 /hour.
3. The glass fibers of claim 2 , wherein the glass fibers have a k dis greater than 1,000 ng/cm 2 /hour.
4. The glass fibers of claim 1 , wherein the composition comprises:
45.0-51.0 wt. % SiO 2 ;
31.0-45.0 wt. % Al 2 O 3 ;
15.0-25.0 wt. % MgO;
3-9.0 wt. % CaO;
0-5.0 wt. % Na 2 O;
0-1.0 wt. % Fe 2 O 3 ;
0-1.0 wt. % TiO 2 ;
0-5.0 wt. % Li 2 O; and
0-5.0 wt. % B 2 O 3 .
5. The glass fibers of claim 1 , wherein the composition comprises:
45.0-49.0 wt. % SiO 2 ;
31.0-25.0 wt. % Al 2 O 3 ;
15.0-20.0 wt. % MgO;
5-9.0 wt. % CaO;
0-5.0 wt. % Li 2 O;
0-1.0 wt. % Fe 2 O 3 ;
0-1.0 wt. % TiO 2 ;
0-5.0 wt. % Na 2 O; and
0-5.0 wt. % B 2 O 3 .
6. The glass fibers of claim 1 , wherein the glass fibers have a Young's modulus greater than 82.7 GPa.
7. The glass fibers of claim 6 , wherein the glass fibers have a Young's modulus greater than 89.6 GPa.
8. The glass fibers of claim 1 , wherein the glass fibers have a density from 2.4 to 3.0 g/cc.
9. Biosoluble glass fibers formed from a composition comprising:
40.0-54.0 wt. % SiO 2 ;
31.0-50.0 wt. % Al 2 O 3 ;
15.0-30.0 wt. % MgO;
0-14.0 wt. % CaO;
0-5.0 wt. % Na 2 O;
0-1.0 wt. % Fe 2 O 3 ;
0-1.0 wt. % TiO 2 ;
0-5.0 wt. % Li 2 O; and
0-9.0 wt. % B 2 O 3 ,
wherein the biosoluble glass fibers have a Young's modulus greater than 82.7 GPa.
10. The biosoluble glass fibers of claim 9 , wherein the biosoluble glass fibers are suitable for reinforcing a composite.
11. The biosoluble glass fibers of claim 9 , wherein the biosoluble glass fibers are formed by a mineral wool process.
12. The biosoluble glass fibers of claim 9 , wherein the biosoluble glass fibers have a Young's modulus greater than 89.6 GPa.
13. The biosoluble glass fibers of claim 9 , wherein the biosoluble glass fibers have a k dis greater than 200.0 ng/cm 2 /hour.
14. The biosoluble glass fibers of claim 13 , wherein the biosoluble glass fibers have a k dis greater than 300.0 ng/cm 2 /hour.
15. A method of forming glass fibers, the method comprising:
providing a glass batch comprising:
40.0-54.0 wt. % SiO 2 ;
31.0-50.0 wt. % Al 2 O 3 ;
15.0-30.0 wt. % MgO;
0-14.0 wt. % CaO;
0-5.0 wt. % Na 2 O;
0-1.0 wt. % Fe 2 O 3 ;
0-1.0 wt. % TiO 2 ;
0-5.0 wt. % Li 2 O; and
0-9.0 wt. % B 2 O 3 , and
fiberizing the glass batch using a mineral wool process to form the glass fibers,
wherein the glass fibers are biosoluble with a k dis greater than 100.0 ng/cm 2 /hour.
16. The method of claim 15 , wherein the glass fibers have a k dis greater than 200.0 ng/cm 2 /hour.
17. The method of claim 15 , wherein the glass fibers have a k dis greater than 300.0 ng/cm 2 /hour.
18. The method of claim 15 , wherein the glass fibers have a density from 2.4 to 3.0 g/cc.
19. The method of claim 15 , wherein the glass fibers have a Young's modulus greater than 82.7 GPa.