Fiberglass composition for insulation fiber in rotary fiberization process

摘要

Glass compositions suitable for rotary fiberization. The compositions contain SiO₂ in an amount of about 49-56 wt %, Al₂O₃ in an amount of about 5.0-8.0 wt %, B₂O₃ in an amount of about 10-15 wt %, RO (MgO+CaO) in an amount of about 8-11 wt %, and R₂O (Na₂O+K₂O) in an amount of about 18-25 wt %. The compositions have an HTV in the range of about 1675°-1775° F. and a liquidus at least 100° F. below the HTV.