초록 ▼

A glass composition suitable for use in manufacturing glass fibers is described which possesses good electrical properties. The glass is characterized by having a boron oxide content below normal glass fiber glass and increased alkaline earth metal oxides with small quantities of magnesium oxide bei

A glass composition suitable for use in manufacturing glass fibers is described which possesses good electrical properties. The glass is characterized by having a boron oxide content below normal glass fiber glass and increased alkaline earth metal oxides with small quantities of magnesium oxide being present. The glasses produced by the composition have acceptable viscosities in the glass fiber making range and exhibit good stability to devitrification. Opacity is not encountered with these glasses as would be expected.

대표청구항 ▼

A glass fiber of an improved glass composition having a reduced boron content but still maintaining acceptable properties of liquidus temperature, softening point, and tensile strength consisting of 54 to 55 percent SiO2, 13 to 14 percent Al2O3, 22 to 24 percent CaO, 0.2 to 0.5 percent MgO, 5.5 to 6

A glass fiber of an improved glass composition having a reduced boron content but still maintaining acceptable properties of liquidus temperature, softening point, and tensile strength consisting of 54 to 55 percent SiO2, 13 to 14 percent Al2O3, 22 to 24 percent CaO, 0.2 to 0.5 percent MgO, 5.5 to 6.8 percent B2O3 and 0.7 to 1.4 percent F2, and less than 1 percent of each of the other substituents including Fe2O3, Na2O, TiO2, K2O all percents being by weight of the composition.