Highly temperature-resistant glass fiber and preparation method therefor

US10981824B2 · kind B2 · utility

Assignee

• CHONGQING POLYCOMP INTERNATIONAL CORPORATION · CN

Inventors

• Cong Zhang · Shandong, CN
• Hongbin Li · Shanghai, CN
• Bo Yu · 安丰镇, CN
• Yuan Yao · Stanford, US
• Bin Zhou · Zhaoqing, CN
• Guoyun Yang · Chongqing, CN
• Baijiang Gong · Chongqing, CN
• Shaorong Ban · Chongqing, CN
• Lixiong Han · Chongqing, CN

Key dates

• Filing date: Mar 30, 2018
• Grant date: Apr 20, 2021
• Expiry date: Jul 21, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2213/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A highly temperature-resistant glass fiber and a preparation method therefor. The glass fiber comprises 62-66 wt % of SiO2, 14-19 wt % of Al2O3, 15-20 wt % of CaO, 0-2 wt % of MgO, 0-3 wt % of Fe2O3, and 0-1.2 wt % of TiO2, the total content of Na2O and K2O is 0.1-0.8 wt %. By precisely controlling the mixture of the components, the glass fiber has good resistance to high temperature and formability, and significantly increases the high-temperature softening point. The glass fiber has a forming temperature of not exceeding 1380° C., an upper limit temperature of devitrification of lower than 1280° C., and a high temperature softening temperature of 950° C. or above.