Preparation method of Li-Al-Si porous microcrystalline glass

A porous glass-ceramic and fast technology, applied in the field of preparation of Li-Al-Si series porous glass-ceramic, can solve the problems of single crystal structure and complicated preparation process, and achieve good thermal stability, simple process, ultra-low temperature Effect of Thermal Expansion Coefficient
CN104876447AActive Publication Date: 2015-09-02XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2015-09-02

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Abstract

The invention discloses a preparation method of Li-Al-Si porous microcrystalline glass. The method is characterized in that by quickly heating to glass transition temperature and performing short-time thermal insulation in an original oxide and carbonate introduction mode, CO2 gas generated by reaction is uniformly distributed in the molten glass to obtain the porous microcrystalline glass comprising three seed structures, including lithium aluminosilicate (LiAlSi3O8), lithium disilicate (Li2Si2O5) and lithium metasilicate (Li2SiO3); and a secondary heat treatment mode is utilized to regulate the variety of the crystals inside the glass and enhance the crystal content, thereby preparing the porous microcrystalline glass product capable of satisfying the operating requirements, wherein the pore size is adjustable within the range.
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Claims

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