What is lithium silicate, what use does lithium silicate have

The friend that contacts chemical industry knows, sodium silicate (sodium sodium sodium silicate, shavings alkali) it is a kind of commonly used silicate, because its price is cheap and utility is extensive. In recent years, potassium silicate has gradually become popular. But lithium silicate, because of its high price, used to be used less frequently than sodium silicate and potassium silicate. So what is lithium silicate? What does it do? Today we're going to focus on that.

Lithium silicate, also known as lithium water glass, is a compound formed by the combination of metallic lithium and silicate structure, and the molecular formula is: Li2SiO3. Lithium silicate is a odorless, tasteless, transparent liquid with a pH of about 11, which is alkaline. Soluble in water and alkaline solutions, but insoluble in alcohols and organic solvents. Lithium silicate, like sodium silicate and potassium silicate, reacts with the acid to free the gel. Self-drying, solution water evaporation, can produce a dry film insoluble in water, with water irreversibility, so the waterproof effect is particularly obvious.

Since the radius of lithium ions is much smaller than that of sodium and potassium ions, the lithium silicate aqueous solution also has some unique properties compared with that of sodium silicate:

1. When SiO2 particles are about 1 m, the appearance of lithium silicate liquid is clear and transparent, its viscosity will be low, water resistance, fire resistance, weather resistance will be very good.

2. When SiO2 particles are about 3 m, the solution is microcolloid, with high viscosity and good film-forming property.

3. The allowable modulus of lithium silicate aqueous solution is up to 8, and the stability is still very good under the condition of ultra-high modulus.

4. The aqueous solution of lithium silicate is self-drying and can generate a dry film insoluble in water, with excellent dry and wet resistance.

First of all, lithium silicate is widely used in inorganic zinc-rich coatings to achieve better water and moisture resistance instead of sodium silicate. Inorganic zinc-rich coatings are widely used in offshore engineering, oil pipelines, ships, Bridges and building coatings and coatings for building materials.

High anticorrosive coating for Marine platform

Secondly, lithium silicate can be used as an adhesive, can be used in wood, paper, plastic, glass, metal, concrete, brick, asbestos, and so on.

Adhesive for carton

Third, lithium silicate can be made into a metal surface treatment agent, direct use, can also be appropriate to add sodium silicate, potassium silicate to improve film-forming, used as steel surface rustproof liquid, metal components of the corrosion inhibitor, non-ferrous metal daily necessities crafts color and light retention agent.

Used for treating metal surface

In addition, lithium silicate coated on glass, can form excellent light transmission, low reflectivity of the surface coating; Coated on galvanized iron sheet without corrosion in salt water; Coated on plastic film, can improve its moisture and gas resistance, but also made of good performance of advanced electrode.

With the great development of China's economy in the past 30 years, products have been constantly upgraded, updated and upgraded. It has become an inevitable trend for high-end products to use lithium silicate instead of cheap sodium silicate. It will be one of our next work projects to explore the more extensive use of lithium silicate.