Highlights
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Colloid chemistry method is used to prepare hydrated Na2O–B2O3–SiO2 glass.
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Sodium silicate solution and H3BO3 used as precursor and the source of boron
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The hydrated Na2O–B2O3–SiO2 glass has a relatively good chemical durability.
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Tg of the hydrated glass increases with the decrease of the water content.
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The hydrated glass powder can be transformed into a lightweight insulating board.