Sodium silicate, commonly known as "water glass" and "alkali". It is a soluble silicate mineral that combines sodium oxide and silicon dioxide. Sodium silicate comes in three shapes: small solids, powders, and liquids. Solid, powder and liquid sodium silicate all have some common characteristics.
(1) steam with water glass casting high adhesion and strength.
Magnesium chloride gum solid is the main component of sodium silicate before hardening, the specific surface is large, so the bonding force is strong. But the quality of the sodium silicate itself, ingredient characteristics and construction maintenance has a significant impact on the strength.
(2) water glass casting process good alkali resistance
Whether in small pieces or divided solid anhydrous sodium silicate, it is difficult to match with hydrochloric acid (HF), and almost all strong oxidants and organics are reflected in addition to hot phosphoric acid and advanced fatty acids. Hydrochloric acid decomposition produces volatile SiF IV, alkali metal chlorides.
(3) water glass casting products with good temperature resistance
When heat-resistant refractory aggregate is selected to be equipped with sodium silicate mortar and concrete, the strength of the silica network frame formed after hardening is reduced very little at high temperatures, and the heat resistance can reach 10,000 ℃. Therefore, according to the heat resistance of stone, the heat resistance of sodium silicate concrete can also be understood as the key.
(4) Poor acid and water resistance.
Sodium silicate cannot be used in alkaline environment, and strong alkali can dissolve solid sodium silicate. Sodium silicate reflects quickly, especially in fine powder form. Same as HF,NaF,Na2CO are soluble in water, not water resistant, but can choose medium concentration acid corresponding to hardened sodium silicate for pickling and improve water resistance.
Water glass use cleaning, textile, forging, fireproof material, anti-corrosion engineering, reinforced soil, building waterproof, etc. Water glass is one of the key uses of construction quick-setting agent. Its advantages: First, the quick-setting effect is particularly fast. Secondly, there is no pressure on the environment. Thirdly, it is low cost and highly adaptable. Fourth, it is easy to construct and highly executable. It is suitable for daily chemical cleaning, textile, forging, fireproof material, anti-corrosion engineering, reinforced soil, building waterproof, etc. Water glass is one of the key uses of construction quick-setting agent.
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