The film-forming principle of inorganic coatings is different from that of organic coatings, and special inorganic coating primers are required. If an ordinary organic paint primer is used, the use of inorganic paint for the top coat may cause difficulty or poor film formation of the inorganic paint, which will seriously affect the quality of the inorganic paint project.

The film-forming principle of inorganic coatings:
Steps:
1) Carbon dioxide reacts with sodium silicate to precipitate sodium carbonate and free silicic acid.
2) The precipitated free silicic acid is re-dissolved in the unreacted sodium silicate, which increases the modulus of the original sodium silicate aqueous solution, and the higher and higher silicate aqueous solution finally forms a film.
     Generally speaking, water-based inorganic coatings have good bonding performance with inorganic substrates with porous surfaces, because inorganic water-based coatings can penetrate into porous surfaces. In the voids of the silicate material, the silicate material in the base material is further bonded, and the precipitate is firmly combined with the base layer in the void. The coating film has sufficient adhesion to the substrate. Wood, plastic, and metal structures are non-mineral materials that cannot bond with water-based inorganic coatings. Therefore, water-based inorganic coatings cannot be used directly on these materials.
      Simon United has launched a special inorganic paint primer, which specifically solves the problem of combining water-based inorganic paint with the base layer.
Special primer for inorganic coatings specially developed for inorganic coatings. Alkaline products can be combined with walls under alkaline wall conditions, with one-way ventilation and high adhesion.
Suitable for mineral-based walls or old inorganic paint coatings, such as: all kinds of cement mortar plastering surfaces, concrete, lime plastering surfaces, gypsum products, cement blocks and bricks and other walls. It cannot be applied directly on non-mineral materials such as metal panels, wood panels, and plastic panels.
      Simon A+ inorganic coating is non-combustible, non-polluting and non-mildew. Professional supporting products Professional inorganic paint primer.