Silicone Water Repellent : What Is Silicone Waterproofing Agent


    Silicone waterproof agent is a new type of high-efficiency waterproof material that is non-polluting and non-irritating, and is widely used by advanced countries in the world. After the product is sprayed (or painted) on the surface of the building, it can form a colorless transparent, UV-resistant breathable film on the surface of the building. When the rain blows on it or encounters humid air, the water droplets will naturally Flowing, preventing water intrusion, at the same time, it can wash away the dust on the surface of the building, so as to protect the inner wall from moisture, mildew, clean the outer wall and prevent weathering.

    Silicone waterproofing agent has two properties: water-based and oily. The water-based silicone waterproofing agent is colorless or light yellow. When it is mixed into cement mortar, it can also play the role of retarder, water reducer and enhancer. Therefore, it is suitable for the construction industry, exterior wall finishes, underground engineering, antique buildings, pools, bricks and tiles, cement, gypsum products and perlite-based insulation materials and rural roof waterproof, moisture, and pollution treatment . The oily silicone waterproofing agent is transparent, and is generally used for glaze, ceramic tiles, floor tiles, ceramics, etc. It can be diluted by adding some solvents appropriately, which is convenient to use.

    Water repellency principle
    The principle of water repellency of silicone milk: When the silicone milk is heated to above 140 ℃, the polysiloxane is oriented on the fabric, the hydrophobic group-CH3 faces outward, the silicon atoms, oxygen atoms of the silicone oil emulsion and the Some atoms form covalent bonds and hydrogen bonds, so that water vapor and air can pass through the fabric, but water droplets cannot. The hydroxyl group at the top of the silicone oil emulsion chain is grafted with hydrogen-containing silicone oil, that is, Si in hydrogen-containing silicone oil. H bond is hydrolyzed to Si. H, it is dehydrated and grafted with silicone oil terminal hydroxyl group to form long-chain molecules. The molecules become larger and softer, which can increase water repellency. Silicone oil and hydrogen-containing silicone oil are cross-linked at 150-180 ° C on the fabric surface to form a polyorganosiloxane resin film that is insoluble in water and solvents. In the silane structure, the methyl group faces outwards, resulting in water repellency, membrane discontinuity and breathability.

    Scope of application
    It is widely applied to the inner and outer walls of various buildings, especially to solve the indoor mildew problem caused by the water leakage of the east and north walls of civil houses. In addition, it can also be widely used for moisture and mildew treatment before interior decoration, industrial plants Anti-pollution cleaning, weathering, and acid rain treatment of internal and external walls, as well as waterproofing of reservoirs, water towers, water storage tanks, sewage treatment plants, and agricultural drainage and irrigation channels; Computer rooms, substation rooms, warehouses, etc. are also applicable.


    Silway provides various solutions for the agricultural industry, including: silicone adjuvant , silicone defoamers,    silicone water repellent   , and methylated seed oil surfactants. :