[China Glass Net] Water glass is in the state of sodium silicate solution, which is called water glass in the south and soda alkaloid in the north. Do you know the main properties of water glass?
1. High adhesion and strength
The main components of the water glass after hardening are silicone gel and solid, and have a large specific surface area, thereby having a high adhesion. However, the quality of the water glass itself, the properties of the batch materials and the construction and maintenance have a significant impact on the strength.
2, good acid resistance
It is resistant to almost all inorganic and organic acids except hydrofluoric acid (HF), hot phosphoric acid and higher fatty acids.
3, good heat resistance
The silica mesh skeleton formed after hardening has a small decrease in strength at high temperatures. When water-resistant glass mortar and concrete are prepared by using heat-resistant refractory aggregate, the heat resistance can reach 1000 °C. Therefore, the heat resistance of the water glass concrete can also be understood as mainly depending on the heat resistance of the aggregate.
4, poor alkali resistance and water resistance
Because water is soluble in alkali, water glass cannot be used in an alkaline environment. Also, since NaF and Na2CO3 are both soluble in water and not resistant to water, the hardened water glass can be pickled with a medium concentration of acid to improve water resistance.
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