Ways to prevent mold on the glass:
On the one hand, it is related to the surface characteristics of the glass itself, and also closely related to the anti-mold treatment measures, the degree of packaging sealing, and the storage and transportation conditions taken before the float glass packaging. When the float glass is formed and annealed, it is generally packaged in-line, and the temperature of the glass is about 50 to 100 ° C. The packaged glass must be in stock and shipped to the user, sometimes for a long time. If you encounter high temperature, high humidity season, improper storage and transportation, moldy glass will appear mold.
Moldy appearance on the air surface of float glass, because the mechanism of the tin surface of the glass itself is defective, the original sheet is packaged and transported during storage, the moldy process at room temperature or slightly above room temperature, the fresh glass surface will The moisture and oil are adsorbed from the surrounding environment, and the form of the OH-group adsorbing water combines with Si4+ to affect the structure of the glass surface. Since OH-ions can form hydrogen chains and adsorb other substances, the cleaned glass surface can be rendered hydrophilic by water, ethanol or sulfuric acid surfaces, but becomes hydrophobic due to the attachment of other substances.
The surface of the glass has the following characteristics: 1 during the annealing process, the alkali ions move to the surface of the glass; 2 the surface is easy to react with O2, SO2, H2O and HCL; 3 the surface strength is low, and the Griffith crack is easy to occur; 4 is easy on the glass surface. Ion exchange; the glassy Sio2 on the surface of 5 can be hydrolyzed to break the Si-O bond; 6 the surface component is easy to evaporate and decompose; 7 the surface is easy to devitrify; 8 the surface has temperature and the like.
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