POROUS GLASS MEMBER PRODUCTION METHOD

Provided is a method for producing a porous glass member whereby cracking during production is less likely to occur and a porous glass member having excellent alkali resistance can be produced. A method for producing a porous glass member includes the steps of: subjecting a glass base material conta...

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Bibliographische Detailangaben
1. Verfasser:	AITOKU, Takashi
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	Provided is a method for producing a porous glass member whereby cracking during production is less likely to occur and a porous glass member having excellent alkali resistance can be produced. A method for producing a porous glass member includes the steps of: subjecting a glass base material containing, in terms of % by mole, 40 to 80% SiO2, over 0 to 40% B2O3, 0 to 20% Li2O, 0 to 20% Na2O, 0 to 20% K2O, over 0 to 2% P2O5, over 0 to 20% ZrO2, 0 to 10% Al2O3, and 0 to 20% RO (where R represents at least one selected from among Mg, Ca, Sr, and Ba) to thermal treatment to separate the glass base material into two phases; and removing one of the two phases with an acid.