Glass compositions, fiberizable glass compositions, and glass fibers made therefrom
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C03C-013/00
C03C-003/095
C08K-007/14
출원번호
US-0385083
(2016-12-20)
등록번호
US-10035727
(2018-07-31)
발명자
/ 주소
Li, Hong
Westbrook, Paul A.
출원인 / 주소
Li, Hong
대리인 / 주소
Kilpatrick Townsend & Stockton LLP
인용정보
피인용 횟수 :
0인용 특허 :
13
초록▼
The present invention relates generally to glass compositions incorporating rare earth oxides (RE2O3). In one embodiment, a glass composition suitable for fiber forming comprises 51-70 wt. % SiO2, 12.5-22 wt. % Al2O3, 0-20 wt. % CaO, 0-11 wt. % MgO, 0.2-1 wt. % Fe2O3, 0.05 or greater wt. % RE2O3, an
The present invention relates generally to glass compositions incorporating rare earth oxides (RE2O3). In one embodiment, a glass composition suitable for fiber forming comprises 51-70 wt. % SiO2, 12.5-22 wt. % Al2O3, 0-20 wt. % CaO, 0-11 wt. % MgO, 0.2-1 wt. % Fe2O3, 0.05 or greater wt. % RE2O3, and greater than 1 wt. % MnOx. In another embodiment, a glass composition suitable for fiber forming comprises 51-70 wt. % SiO2, 12.5-22 wt. % Al2O3, 0-20 wt. % CaO, 0-11 wt. % MgO, 0.2-1 wt. % Fe2O3, 0.05 or greater wt. % RE2O3, 0-4 wt. % BaO, 0-4 wt. % SrO, and 0-5.5 wt. % ZnO, wherein the sum of BaO+SrO+ZnO is greater than about 2 wt. %. In another embodiment, a glass composition suitable for fiber forming comprises 51-70 wt. % SiO2, 12.5-22 wt. % Al2O3, 0-20 wt. % CaO, 0-11 wt. % MgO, 0.2-1 wt. % Fe2O3, 0.05 or greater wt. % RE2O3, and from greater than 0 to 2.5 wt. % Cu2O. In another embodiment, a glass composition suitable for fiber forming comprises 51-70 wt. % SiO2, 12.5-22 wt. % Al2O3, 0-20 wt. % CaO, 0-12.5 wt. % MgO, 0.2-1 wt. % Fe2O3, 0.05 or greater wt. % RE2O3, and at least one additional feature selected from the group consisting of: La2O3 is present in an amount greater than about 2 weight percent, CaO is present in an amount less than about 2 weight percent, a MgO/CaO ratio less than about 1, and a SiO2/Al2O3 ratio greater than about 4. The glass compositions can be used to form glass fibers which can be incorporated into a variety of other fiber glass products (e.g., strands, rovings, fabrics, etc.) and incorporated into various composites.
대표청구항▼
1. A glass composition suitable for fiber forming comprising: SiO2from about 51 to about 70 weight percent;Al2O3from about 12.5 to about 22 weight percent;CaOfrom 0 to about 20 weight percent;MgOfrom 0 to about 11 weight percent;Fe2O3from about 0.2 to about 1 weight percent;RE2O3about 0.05 or greate
1. A glass composition suitable for fiber forming comprising: SiO2from about 51 to about 70 weight percent;Al2O3from about 12.5 to about 22 weight percent;CaOfrom 0 to about 20 weight percent;MgOfrom 0 to about 11 weight percent;Fe2O3from about 0.2 to about 1 weight percent;RE2O3about 0.05 or greater weight percent;BaOfrom 0 to about 4 weight percent;SrOfrom 0 to about 4 weight percent; andZnOfrom 0 to about 5.5 weight percent;wherein the sum of BaO+SrO+ZnO is greater than 2 weight percent. 2. The glass composition of claim 1, wherein the sum of BaO+SrO+ZnO is greater than 3 weight percent. 3. The glass composition of claim 1, wherein BaO is present in an amount greater than 2 weight percent. 4. The glass composition of claim 1, wherein SrO is present in an amount greater than 2 weight percent. 5. The glass composition of claim 1, wherein ZnO is present in an amount greater than 2 weight percent. 6. The glass composition of claim 1, further comprising less than 1.5 weight percent Na2O+K2O+Li2O. 7. The glass composition of claim 1, further comprising from 0 to about 1 weight percent B2O3. 8. A glass composition suitable for fiber forming comprising: SiO2from about 51 to about 65 weight percent;Al2O3from about 12.5 to about 22 weight percent;CaOfrom 0 to about 20 weight percent;MgOfrom 0 to about 12 weight percent;Fe2O3from about 0.2 to about 1 weight percent;RE2O3greater than 2 weight percent, wherein RE2O3 comprisesLa2O3 in an amount greater than 2 weight percent; and at leastone additional feature selected from the group consisting of:CaO is present in an amount less than 2 weight percent;a ratio of MgO content to CaO content (MgO/CaO) less than 1; anda ratio of SiO2 content to Al2O3 content (SiO2/Al2O3) greater than 4. 9. The glass composition of claim 8, wherein the composition comprises La2O3 in an amount greater than 3 weight percent. 10. The glass composition of claim 8, wherein MgO is present in an amount greater than 6 weight percent, and the additional feature comprises CaO in an amount less than 1.5 weight percent. 11. The glass composition of claim 8, wherein the additional feature comprises the SiO2/Al2O3 ratio in an amount greater than 4.2. 12. The glass composition of claim 8, further comprising less than 1.5 weight percent Na2O+K2O+Li2O.
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이 특허에 인용된 특허 (13)
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