초록 ▼

Provided is a glass composition useful in preparing fiberglass, with the composition comprising SiO2 in an amount ranging from 52-62 weight percent: B2O3 in an amount ranging from 3.5-5.5 weight percent; CaO in an amount ranging from 18-25 weight percent; MgO in an amount ranging from 0.5-4 weight p

Provided is a glass composition useful in preparing fiberglass, with the composition comprising SiO2 in an amount ranging from 52-62 weight percent: B2O3 in an amount ranging from 3.5-5.5 weight percent; CaO in an amount ranging from 18-25 weight percent; MgO in an amount ranging from 0.5-4 weight percent; Al 2O3 in an amount ranging from 10-15 weight percent; and Na2O in an amount ranging from 0.25-2 weight percent. The glass composition has an HTV of no greater than 2300째 F. and a liquidus temperature at least 150 째 F. less than the HTV temperature. The composition allows one to realize costs savings associated with lower batch costs and abatement requirements, without significantly increasing the energy required for melting the glass, reducing fiberization efficiency, or requiring the development of new bushing technology.

대표청구항 ▼

What is claimed is: 1. A glass composition useful in preparing fiberglass, comprising: SiO2 52-62 wt. % B2O3 3.5-5.5 wt. % CaO 18-25 wt. % MgO 0.5-4 wt. % Al2O3 10-15 wt. % Na2O 0.25-2 wt. %; and wherein the glass composition has an HTV of no greater than

What is claimed is: 1. A glass composition useful in preparing fiberglass, comprising: SiO2 52-62 wt. % B2O3 3.5-5.5 wt. % CaO 18-25 wt. % MgO 0.5-4 wt. % Al2O3 10-15 wt. % Na2O 0.25-2 wt. %; and wherein the glass composition has an HTV of no greater than 2300째 F. and a liquidus temperature at least 150째 F. less than the HTV temperature. 2. The glass composition of claim 1, wherein the amount of SiO2 ranges from 53 to 57 wt. %. 3. The glass composition of claim 2, wherein the amount of B2O3 ranges from 4 to 5 wt. %. 4. The glass composition of claim 1, wherein the amount of CaO ranges from 20-24 wt. %. 5. The glass composition of claim 1, wherein the amount of MgO ranges from 1-3.5 wt. %. 6. The glass composition of claim 1 wherein the amount of Al2O3 ranges from 12-15 wt. %. 7. The glass composition of claim 1, wherein the amount of Na2O ranges from 0.5-1.5 wt. %. 8. The glass composition of claim 1, wherein the composition contains the following amounts of ingredients: SiO2 53-57 wt. % B2O3 4-5 wt. % CaO 20-24 wt. % MgO 1-3.5 wt. % Al2O3 12-15 wt. % Na2O 0.5-1.5 wt. %. 9. The glass composition of claim 8, wherein the amount of SiO2 ranges from 54-56 wt. %. 10. The glass composition of claim 8, wherein the amount of CaO ranges from 21-23.5 wt. %. 11. The glass composition of claim 10, wherein the amount of MgO ranges from 1.5-3 wt. %. 12. The glass composition of claim 8, wherein the amount of Al2O3 ranges from 14-15 wt. %. 13. The glass composition of claim 1, wherein the HTV is less than 2250째 F. 14. The glass composition of claim 1, wherein the HTV is less than 2200째 F. 15. The glass composition of claim 1, wherein the liquidus temperature is at least 160째 F. less than that of the HTV temperature. 16. The glass composition of claim 1, wherein the amount of B2O3 ranges from 4.5 to 5.0 wt. %.