Low boron glass fibers with low index of refraction

Details Low boron glass fibers with low index of refraction Low boron glass fibers with low index of refraction

1986-09-29

1988-09-13

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 35, 501 38, 501 59, 501 66, 501 70, 501903, C03C 1304, C03C 400

Patent

active

047710195

ABSTRACT:
Reduced boron containing glass fibers are provided which have a refractive index similar to that of higher boron-containing glass fiber compositions. The glass fibers with a refractive index in the range of greater than 1.5495 to around 1.57 have in weight percent SiO.sub.2 - 55-56.5, CaO - 20-23, Al.sub.2 O.sub.3 14.5-15.5, B.sub.2 O.sub.3 - 5 to 5.8, R.sub.2 O - 1-1.5, wherein R is an alkali metal and F.sub.2 - 0.4 to 0.6. In addition, the glass fiber composition can have minor constituents such as TiO.sub.2 of up to around 0.6 weight percent and an MgO of up to around 0.3 weight percent and ferric oxide of up to around 0.3 weight percent. Basically, the glass fibers have a reduced content of both B.sub.2 O.sub.3 and CaO over standard glass fiber compositions such as E-glass and 621-glass and also has elevated amounts of alkali and of refractory constituents such as SiO.sub.2 and Al.sub.2 O.sub.3. The glass fibers are formed with an elevated temperature of 40.degree. to 50.degree. F. (22.degree.-28.degree. C.) above the temperature used to form glass fibers from E-glass and 621-glass.

REFERENCES:
patent: 2334961 (1943-11-01), Schoenlaub
patent: 2571074 (1951-10-01), Tiede et al.
patent: 2853393 (1958-09-01), Beck et al.
patent: 2944994 (1960-07-01), Singleton et al.
patent: 3095311 (1963-06-01), von Wranau et al.
patent: 3687850 (1972-08-01), Gagin
patent: 3847626 (1974-11-01), Erickson et al.
patent: 3847627 (1974-11-01), Erickson et al.
patent: 3876481 (1975-04-01), Erickson et al.
patent: 3881945 (1975-05-01), Trojer et al.
patent: 3945838 (1976-03-01), Erickson et al.
patent: 4046948 (1977-09-01), Zlochower
patent: 4066466 (1978-01-01), Neely, Jr.
patent: 4110094 (1978-08-01), Motsinger et al.
patent: 4166747 (1979-09-01), Neely, Jr.
patent: 4199364 (1980-04-01), Neely

Affiliated with

Also associated with

Rating

Low boron glass fibers with low index of refraction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low boron glass fibers with low index of refraction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low boron glass fibers with low index of refraction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-806872