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-0344130
(2008-12-24)
등록번호
US-8252707
(2012-08-28)
발명자
/ 주소
McGinnis, Peter B.
Hofmann, Douglas
출원인 / 주소
OCV Intellectual Capital, LLC
대리인 / 주소
Calfee, Halter & Griswold LLP
인용정보
피인용 횟수 :
4인용 특허 :
81
초록▼
A composition for the manufacture of high strength glass fibers suitable for manufacture in both precious metal lined furnaces and refractory lined glass melter is disclosed. The glass composition of the present invention includes 62-68 weight % SiO2, 22-26 weight % Al2O3, 8-15 weight % MgO and 0.1
A composition for the manufacture of high strength glass fibers suitable for manufacture in both precious metal lined furnaces and refractory lined glass melter is disclosed. The glass composition of the present invention includes 62-68 weight % SiO2, 22-26 weight % Al2O3, 8-15 weight % MgO and 0.1 to 3.0 weight % Li2O. One suitable composition of the present invention includes 64-66.5 weight percent SiO2, 23-24.5 weight percent Al2O3, 9-11 weight percent MgO and 0.3-0.35 weight percent Li2O. Another suitable composition includes 66.5 weight percent SiO2, 23.4 weight percent Al2O3, 9.8 weight percent MgO and 0.3 weight percent Li2O. Yet another suitable composition is about 66 weight percent SiO2, about 23 weight percent Al2O3, about 10.5 weight percent MgO and about 0.3 weight percent Li2O. 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 25° F. Further, the glass fibers of the present invention typically have a strength in excess of 700 KPSI, in one embodiment, a strength in excess of about 730 KPSI, and, in yet another embodiment, a strength in excess of about 750 KPSI. The glass fibers will typically have a modulus greater than 12.8 MPSI, in one embodiment, greater than about 13 MPSI, and, in yet another embodiment, greater than about 13.2 MPSI.
대표청구항▼
1. A high strength glass fiber comprising: 62-68 weight percent SiO2;22-26 weight percent Al2O3;8-11.1 weight percent MgO;0.1-3.0 weight percent Li2O; andless than 2 weight percent CaO, wherein said fiber has a pristine fiber tensile strength greater than 700 KPSI and a fiberizing temperature less t
1. A high strength glass fiber comprising: 62-68 weight percent SiO2;22-26 weight percent Al2O3;8-11.1 weight percent MgO;0.1-3.0 weight percent Li2O; andless than 2 weight percent CaO, wherein said fiber has a pristine fiber tensile strength greater than 700 KPSI and a fiberizing temperature less than about 2650° F. 2. The high strength glass fiber of claim 1, further comprising: less than about 3 weight percent total of one or more compounds selected from the group consisting of P2O5, ZnO, ZrO2, SrO, BaO, S03 F2, B2O3, TiO2 and Fe2O3. 3. The high strength glass fiber of claim 1, wherein said SiO2 is present in said glass in amount between 64 and 67 weight percent. 4. The high strength glass fiber of claim 1, wherein said fiber has a modulus greater than about 12.8 MPSI. 5. The high strength glass fiber of claim 1, wherein said fiber has a liquidus temperature that is at least 25° F. less than said fiberizing temperature. 6. The high strength glass fiber of claim 1, wherein: said SiO2 is present in said fiber in an amount from about 64 to about 66.5 weight percent;said Al2O3 is present in said fiber in an amount from about 23 to about 24.5 weight percent;said MgO is present in said fiber in an amount from about 9 to about 11 weight percent; andsaid Li2O is present in said fiber in an amount from about 0.1 to about 2.0 weight percent. 7. The high strength glass fiber of claim 1, wherein said fiber has a delta T of at least 25° F. 8. The high strength glass fiber of claim 1, wherein said Li2O is present in said fiber in an amount from 1.75 to 3.0 weight percent. 9. A composition for forming a glass fiber comprising: SiO2 in an amount from about 62 to about 68 weight percent;Al2O3 in an amount from about 22 to about 26 weight percent;MgO in an amount from about 8 to about 11.1 weight percent;Li2O in an amount from about 0.1 to about 3 weight percent; andless than 2 weight percent CaO, wherein said fiber has a pristine fiber tensile strength greater than 700 KPSI. 10. The composition of claim 9, further comprising less than about 3 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. 11. The composition of claim 9, wherein: said SiO2 is present in said fiber in an amount from about 64 to about 66.5 weight percent;said Al2O3 is present in said fiber in an amount from about 23 to about 24.5 weight percent;said MgO is present in said fiber in an amount from about 9 to about 11 weight percent; andsaid Li2O is present in said fiber in an amount from about 0.1 to about 2.0 weight percent. 12. The composition of claim 9, wherein said Li2O is present in said fiber in an amount from 1.75 to 3.0 weight percent.
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