Low borosilicate glass and preparation method thereof

• Main Authors: XIAO ZIFAN, PING WENLIANG, LIU HONGGANG, ZHENG WENGANG, DAI BIN, CHEN FENG, JIANG QING, LIN WENCHENG
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2022
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

The invention relates to low borosilicate glass and a preparation method thereof. The low borosilicate glass comprises the following components in percentage by mass: 70%-84% of SiO2, 0-10% of Al2O3, 4%-8% of B2O3, 0-3% of Li2O, 2%-7% of Na2O, 0-1% of K2O, 2%-7% of MgO and 0-7.5% of CaO. The low borosilicate glass has a low melting temperature, a high softening point and a low thermal expansion coefficient by adjusting the components and the ratio of the glass, the melting temperature is about 1630 DEG C, the softening point is not lower than 810 DEG C, the thermal expansion coefficient at 50-300 DEG C is 40 * 10 <-7 >/DEG C to 50 * 10 <-7 >/DEG C, and the low borosilicate glass has good fire resistance and good chemical stability, has the low melting temperature, and can be used as a fire-resistant material. Clarified molten glass can be obtained at a low temperature, and the loss of a kiln in production is low. 本发明涉及一种低硼硅酸盐玻璃及其制备方法。该低硼硅酸盐玻璃，按照质量百分比计，包括：SiO2 70％～84％、Al2O3 0～10％、B2O3 4％～8％、Li2O 0～3％、Na2O 2％～7