Description

Lithium silicate is an aqueous solution of silica (SiO2) and lithium alkali (Li2O) compounds. An important advantage of lithium silicates is that Stable, low-viscosity lithium silicate solutions can be prepared at much higher molar ratios than sodium and potassium silicate solutions. In the case of sodium silicate, a solution of 4.5 mole ratio with silica (SiO2) content at least 20% is highly viscous and unstable. Lithium silicate, on the other hand, has a silica concentration of 20% and a stable and low viscosity at room temperature even when the molar ratio is close to 8. Compared with sodium silicate or potassium silicate, it has low alkali content and low alkali solubility, so it does not easily dissolve by moisture and does not cause efflorescence. Adding lithium silicate to sodium silicate or potassium silicate can help improve water resistance and heat resistance. The molar ratio is calculated as follows:

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