Potassium Silicate Solution: Versatile Inorganic Binder & High-Temp Adhesive
Adhesive-specific potassium silicate is a high-strength, high-temperature-resistant, environmentally friendly and non-toxic water-based inorganic adhesive. It is an ideal alternative to organic adhesives and is particularly suitable for bonding and encapsulation in harsh environments.. It is a colorless or slightly yellow semi transparent to transparent liquid with hygroscopicity. It has a pH value between 11-12 and a relative density between 1.16-1.45 (20 ℃).
Appearance and Packaging
This is a colorless or slightly yellow semi transparent liquid with hygroscopicity.
It is usually packaged in ICB barrels or 200-liter plastic barrels.
The core advantages and features of liquid potassium silicate solution for adhesive
1.Potassium silicate exhibits outstanding high-temperature resistance:
Potassium silicate is an inorganic substance with an extremely high melting point. After curing, the adhesive layer can withstand temperatures above 1000°C for a long time without melting or decomposing. It is an ideal adhesive for manufacturing high-temperature furnaces and kilns, bonding refractory materials, and the aerospace industry.
2.Potassium silicate has a highly strong chemical bonding:
Potassium silicate can form strong chemical bonds with the surfaces of glass, ceramics, stone, metal oxides, etc. It offers a bonding strength and durability far exceeding that of common organic adhesives, and is particularly suitable for bonding load-bearing structural components.
3.Potassium silicate has excellent durability:
Potassium silicate is mainly composed of silicon-oxygen bonds and has extremely stable chemical properties. It does not age, does not yellow, is resistant to ultraviolet rays, resistant to acid and alkali corrosion, and has a service life that is synchronized with the substrate. It is suitable for outdoor permanent buildings.
4.Silicate potassium environmental friendliness and safety:
Silicate potassium is a water-based system, containing no organic solvents or harmful substances. During production and use, it is harmless to operators, has no fire risk, the finished product does not volatilize, and can be used in food-grade equipment or enclosed spaces.
5.Potassium silicate exhibits excellent air permeability and fire resistance:
After curing, it forms a microporous structure and is non-flammable. It allows water vapor to pass through, preventing damage to the adhesive layer due to pressure differences inside and outside; it meets the A1-level fire safety standard.
Application scenarios of potassium silicate solution for adhesive
| Fire-resistant material bonding | Fire-resistant brick masonry, bonding of fire-resistant cast-in-place components, and repair of kilns. |
| High-temperature sealing and packaging | Sealing and packaging of electric heating tubes, thermocouples, and automotive exhaust treatment devices. |
| Building material bonding | Bonding of inorganic materials such as glass, ceramics, stone, and microcrystalline boards. |
| Special coatings | As the film-forming binder for inorganic zinc-rich coatings and inorganic mineral coatings. |
| Casting industry | As the binder for casting molding sand. |
Guide for the Use of potassium silicate for binder
1.Surface treatment: The surface of the object to be bonded should be clean, dry, free of oil stains and loose layers.
2.Gluing: Apply evenly by brushing or scraping onto the surface of the object to be bonded.
3.Adhesion: Apply a certain amount of pressure to ensure the bonding surfaces are closely adhered together.
4.Curing: It undergoes slow curing by absorbing carbon dioxide at room temperature. The curing process can be accelerated by heating (80 – 150°C).
Notes: Not suitable for direct bonding of reactive metals such as copper and aluminum (corrosion may occur). Store in a sealed container to prevent the formation of scale.
