Glass bottle products should be eroded by water, acid, alkali, salt, gas, and other chemical reagent solutions during use, and the resistance of glass to these erosion is referred to as chemical stability. The chemical stability of glass bottle utensils is mainly reflected in the erosion of water to glass and the erosion of the atmosphere on the glass.
In the production of domestic glass bottle utensils, some small factories sometimes think that in order to reduce the melting temperature of the glass, it is believed that the NA2O content in the formation of glass chemistry or reduces the SiO2 content to reduce the chemical stability performance of the glass. The glass bottle utensils with poor chemical stability have been stored for a long time in a humid environment, resulting in hair hair on the surface of the product and losing the gloss and transparency of the glass itself. The stabilization of glass anti -hydraulic chemistry decreases.
This should attract sufficient attention. Do not excessively pursue lowering the melting temperature and increasing the NA2O content. Some feldling agents should be introduced appropriately, or chemical composition to reduce the melting temperature, otherwise it will bring serious quality problems to the product. Sometimes due to poor chemical stability, it seems that the "back alkali" at that time, but after exporting to some countries with large air humidity, "alkali returning" will cause greater economic losses. Therefore, in the production of glass production, the chemical stability of the glass must be sufficient.