Nippon Electric Glass Co., Ltd.

Hiroshi Sawasato

Shinsaku Nishida

Yuki Yokota

Minoru Matsumoto

Provided is a glass fiber having a low spinning temperature and a low liquidus temperature, and besides, having a large difference between the liquidus temperature and the spinning temperature, and a method of manufacturing the same. The glass fiber of the present invention includes as a glass composition, in terms of mass % on an oxide basis, 50% to 65% of SiO, 0% to 3% of AlO, 0% to 1% of MgO, 0% to less than 0.7% of CaO, 0% to 1% of LiO, 10% to 20% of NaO, 0% to 2% of KO, 6% to 10% of TiO, and 15% to 20% of ZrO, and has a value for (NaO+KO)/(MgO+CaO) of 6.0 or more.

Glass fiber and method for producing same

Provided is a glass composition for a glass fiber, which has excellent alkali resistance, acid resistance, and hydrolytic resistance, is useful as a reinforcing material for composite materials such as calcium silicate board and GRC and as a corrosion-resistant material for battery separators or the like, and has a low glass drawing temperature and liquidus temperature of the glass and thus which is excellent in productivity. The glass composition comprises, in mass % on an oxide base, 50 to 65% of SiO, 0 to 5% of AlO, 0 to 10% of CaO, 10 to 20% of LiO+NaO+KO, 0 to 5% of LiO, 10 to 20% of NaO, 0 to 5% of KO, 5 to 10% of TiO, and 10 to 20% of ZrOas a glass composition.

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Otsu, Japan

Hiroshi Sawasato