There are three main application areas for soluble glass determined by its physical-chemical and rheological properties:
1. Usage of binding properties of soluble glass:
- Used as a binding agent in composite materials; the composition of such solution can be described as “soluble glass + filling material”;
- Used as a component of heterogeneous systems (cements).
Conveniently the composition of such materials can be described as:
- Soluble glass (confining liquid for powder part) + filling material + fine powders (soluble glass interreacts chemically with components in such systems);
- Used as inorganic adhesive that is like a homogeneous uniform mixture, this mixture hardens and gives its properties when it is unwatered or interreacts with hardeners that are in solid, liquid or gaseous states. This system can be described as “soluble glass + hardener”.
2. Usage of soluble glass as a source of soluble colloidal silica (silicon oxide) for:
- silica gels and sols;
- accelerants based on silicon oxide;
- white black (aerosil).
3. Usage of soluble glass based on colloid-chemical properties and high concentration of sodium (potassium) oxide in such areas as detergent and chemical-cleaning industries.
Particularly potassium silicate is used:
- as a binding agent in painting solutions for internal and external works as it helps to avoid whitish (salt) spots on the surface (as against sodium silicate);
- as a component in silicate paints manufacturing;
- as a binding agent for repair process of high-temperature furnaces;
- for production of welding electrodes;
- for getting of sodium-potassium or potassium-sodium silicate, depending on proportions and required properties of solutions.
Both potassium and sodium silicates are resistible to water, acids and atmospheric effects. Soluble sodium and potassium silicates are applied in many industries. There are some of them: