|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||106/50 ; 106/54|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 11 인용 특허 : 1|
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.
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.