초록

Fiberizable glass compositions are disclosed. The fibers may be produced from sand, clay, limestone, dolomite or other suitable raw materials. The fibers can be used to make low density composites for ceiling tile or boards.

대표청구항 ▼

Mineral wool fibers having a composition consisting essentially by weight of: ________________________________ -Weight Percent ________________________________ SiO2 38-42 Al2O3 6-10 MgO 12-16 CaO 35-40 Fe2O3 ≤2 Other impurities ≤2 ________________________________ wherein the composition consists of

Mineral wool fibers having a composition consisting essentially by weight of: ________________________________ -Weight Percent ________________________________ SiO2 38-42 Al2O3 6-10 MgO 12-16 CaO 35-40 Fe2O3 ≤2 Other impurities ≤2 ________________________________ wherein the composition consists of akermanite modified with Al2O3; wherein the composition has a viscosity of log n=1.0 at a temperature of 2600°F. or less, and wherein the fibers have a high softening temperature as indicated by a viscosity of log n=12.0.