1. The category of silicone Silicone includes silane, siloxane, silicone resin, silicone rubber, etc. according to chemical composition. According to the form, it can be divided into liquid stock solution, emulsion, solution, powder, rubber and resin. 2. The necessity of building surface waterproof Prevent the migration of base alkali and salt through the pores to the surface, anti-back to alkali Prevent dissolution and destruction of adhesive Stain resistant Prevent microbial growth Maintain the mechanical strength and aesthetic appearance of the building surface 3. Features of silicone The molecule contains inorganic and organic groups, the inorganic group is Si, and the organic group is alkyl (methyl), alkoxy, etc., so it has the following characteristics: It has the durability, weather resistance (ultraviolet and ozone) and temperature resistance imparted by inorganic silicon. Water resistance with inorganic alkyl and alkoxy groups. Low surface energy has defoaming properties. The silanol group at the end has a reactivity with the surface of the inorganic building, and firmly fixes the surface and pores of the inorganic building. 4. The hydrophobic mechanism of silicone hydrophobic agent The hydrophobic treatment process is completed through two steps of hydrolysis and condensation. (1) Hydrolysis reaction After the silicone powder enters the aqueous system, the hydrolysis reaction occurs quickly. (2) Condensation reaction with cement substrate The organic group faces outwards and has good hydrophobicity. Hangzhou Silva New Material Technology Co., Ltd . is a professional China manufacturer and supplier of Innovative Silicone and silicone water repellent . Building materials treated with silicone water repellent retain their vapor permeability. This is because the silicone waterproofing agent does not seal the pores on the surface of the mineral masonry substrate, but forms a very thin layer on the pore wall. The siliconized pores are no longer wetted by water and can prevent capillaries from absorbing water. Based on its extensive experience in this field, the product's water resistance has passed various rigorous tests to ensure its effectiveness. Welcome to consult and purchase: https://www.silways.com/product/silicone-water-repellent.html