Composition for high performance glass fibers and fibers formed therewith
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C03C-013/06
C03C-013/00
C03C-003/085
출원번호
US-0341985
(2008-12-22)
등록번호
US-8338319
(2012-12-25)
발명자
/ 주소
McGinnis, Peter Bernard
Hofmann, Douglas A.
출원인 / 주소
OCV Intellectual Capital, LLC
대리인 / 주소
Calfee, Halter & Griswold LLP
인용정보
피인용 횟수 :
3인용 특허 :
81
초록▼
A composition for the manufacture of high strength glass fibers suitable for manufacture in a refractory lined glass melter is disclosed. The glass composition of the present invention includes 64-75 weight % SiO2, 16-24 weight % Al2O3, 8-11 weight % MgO and 0.25 to 3.0 weight % R2O where R2O is the
A composition for the manufacture of high strength glass fibers suitable for manufacture in a refractory lined glass melter is disclosed. The glass composition of the present invention includes 64-75 weight % SiO2, 16-24 weight % Al2O3, 8-11 weight % MgO and 0.25 to 3.0 weight % R2O where R2O is the sum of Li2O and Na2O. A composition of the present invention includes 64-75 weight % SiO2, 16-24 weight % Al2O3, 8-11 weight % MgO and 0.25 to 3.0 weight % Li2O. Another composition includes 68-69 weight percent SiO2, 20-22 weight percent Al2O3, 9-10 weight percent MgO and 1-3 weight percent Li2O. By using oxide based refractory lined furnaces the cost of production of glass fibers is substantially reduced in comparison with the cost of fibers using a platinum lined melting furnace. Fibers formed by the present invention are also disclosed. The fibers have a fiberizing temperature of less than 2650° F., a ΔT of at least 80° F. Further, the glass fibers have a strength in excess of 680 KPSI, in some instances a strength in excess of about 700 KPSI, and in others a strength in excess of about 730 KPSI. The glass fibers will desirably have a modulus greater than 12.0 MPSI, in some instances greater than about 12.18 MPSI, and in certain instances greater than about 12.7 MPSI.
대표청구항▼
1. A composition for high strength glass fibers comprising: 64-75 weight percent SiO2;16-24 weight percent Al2O3;8-11 weight percent MgO;0.25-3 weight percent Li2O; andno more than 1.0 weight percent of CaO impurities, wherein said glass fibers produced from said composition have a fiberizing temper
1. A composition for high strength glass fibers comprising: 64-75 weight percent SiO2;16-24 weight percent Al2O3;8-11 weight percent MgO;0.25-3 weight percent Li2O; andno more than 1.0 weight percent of CaO impurities, wherein said glass fibers produced from said composition have a fiberizing temperature of less than about 2650° F. and a strength of greater than about 700 KPsi. 2. The composition of claim 1, wherein the composition further comprises less than 5 weight percent total of one or more compounds selected from the group consisting of P2O5, ZnO, ZrO2, SrO, BaO, SO3, F2, B2O3, TiO2 and Fe2O3. 3. The composition of claim 1, wherein glass fibers produced from said composition have a ΔT of at least 80° F. 4. The composition of claim 1, wherein: said Al2O3 is present in said composition in an amount from about 17 to about 22 weight percent;said MgO is present in said composition in an amount from about 9 to about 11 weight percent; andsaid Li2O is present in said composition in an amount from about 1.75 to 3.0 weight percent. 5. The composition of claim 1, wherein the components of said composition are meltable in a refractory-lined melter. 6. A high strength glass fiber formed from a composition comprising: 64-75 weight percent SiO2;16-24 weight percent Al2O3;8-11 weight percent MgO;0.25-3 weight percent Li2O, andno more than 1.0 weight percent of CaO impurities, wherein said glass fiber has a fiberizing temperature of less than about 2650° F. and a strength of greater than about 700 KPsi. 7. The high strength glass fiber of claim 6, wherein the fiber has a modulus greater than about 12.0 MPsi. 8. The high strength glass fiber of claim 6, wherein said fiber has a pristine fiber tensile strength greater than about 730 KPsi. 9. The high strength glass fiber of claim 6, wherein said fiber has a fiberizing temperature less than about 2600° F. 10. The high strength glass fiber of claim 9, wherein said fiber has a liquidus temperature that is at least 80° F. below said fiberizing temperature. 11. The high strength glass fiber of claim 6, wherein said fiber has a ΔT of at least 80° F. 12. The high strength glass fiber of claim 6, wherein said fiber has a liquidus temperature that at least 80° F. below the fiberizing temperature. 13. The composition of claim 6, wherein Li2O is present in said composition in an amount from about 1.75 to 3.0 weight percent. 14. A glass fiber formed composition comprising: 64-75 weight percent SiO2;16-24 weight percent Al2O3;8-11 weight percent MgO;0.25-3 weight percent Li2O; andno more than 1.0 weight percent of CaO impurities, wherein said glass fibers produced from said composition have a fiberizing temperature of less than about 2650° F., a modulus of greater than 12 MPsi, and a strength of greater than about 700 KPsi. 15. The high strength glass fiber of claim 14, wherein said fiber has a liquidus temperature that is at least 80° F. below the fiberizing temperature. 16. The high strength glass fiber of claim 14, wherein said fiber has a fiberizing temperature less than about 2600° F. 17. The glass fiber of claim 16, wherein said fiber has a liquidus temperature that is at least 80° F. below said fiberizing temperature. 18. The glass fiber of claim 14, wherein said fiber has a pristine fiber tensile strength greater than about 730 KPsi. 19. The glass fiber of claim 14, wherein said fiber has a ΔT of at least 80° F. 20. The glass fiber of claim 14, wherein: said Al2O3 is present in said composition in an amount from about 17 to about 22 weight percent;said MgO is present in said composition in an amount from about 9 to about 11 weight percent; andsaid Li2O is present in said composition in an amount from about 1.75 to 3.0 weight percent.
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