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1. (WO2017190405) HIGH MODULUS GLASS FIBRE COMPOSITION, AND GLASS FIBRE AND COMPOSITE MATERIAL THEREOF

Pub. No.:    WO/2017/190405    International Application No.:    PCT/CN2016/086022
Publication Date: Fri Nov 10 00:59:59 CET 2017 International Filing Date: Fri Jun 17 01:59:59 CEST 2016
IPC: C03C 13/00
C03C 13/02
C03C 3/095
Applicants: JUSHI GROUP CO., LTD.
巨石集团有限公司
Inventors: ZHANG, Lin
章林
CAO, Guorong
曹国荣
XING, Wenzhong
邢文忠
ZHANG, Yuqiang
张毓强
GU, Guijiang
顾桂江
Title: HIGH MODULUS GLASS FIBRE COMPOSITION, AND GLASS FIBRE AND COMPOSITE MATERIAL THEREOF
Abstract:
A high modulus glass fibre composition, and a glass fibre and a composite material thereof. The content, given in weight percentage, of each component of the glass fibre composition is as follows: 55.7-58.9% of SiO2, 15-19.9% of Al2O3, 0.1-4.3% of Y2O3, less than or equal to 1.5% of La2O3, less than or equal to 1.2% of CeO2, 6-10% of CaO, 9.05-9.95% of MgO, less than or equal to 2% of SrO, less than or equal to 0.99% of Li2O + Na2O + K2O, less than or equal to 0.65% of Li2O, less than 1% of Fe2O3, and 0.1-1.5% of TiO2, and the range of a weight percentage ratio C1 is more than 0.6, wherein C1 = Y2O3 / (Y2O3 + La2O3 + CeO2). The composition significantly increases the elastic modulus of glass, significantly reduces the liquidus temperature and the forming temperature of glass, and under equal conditions, significantly reduces the crystallisation rate and the bubble rate of glass. The composition is particularly suitable for the tank furnace production of a high modulus glass fibre having a low bubble rate.