Views: 0 Author: Site Editor Publish Time: 2020-10-28 Origin: Site
Silicone waterproofing agents have two properties: water-based and oily. Water-based organosilicon waterproofing agent is milky white. When it is mixed into cement mortar, it can also act as a retarder, water reducer and enhancer. Therefore, it is suitable for the construction industry, exterior wall facing, underground engineering, antique buildings, pools, bricks and tiles, cement, gypsum products and thermal insulation materials with perlite as the main material, and the waterproofing, moisture-proof and pollution-proof treatment of rural roofs. . The oily silicone waterproofing agent is transparent, and is generally used for glaze, ceramic tiles, floor tiles, ceramics, etc. It can be diluted with some solvents and is convenient to use.
The water-repellent principle of silicone emulsion: When the silicone emulsion is heated to above 140°C, the silicone wrists are aligned on the fabric, and the hydrophobic group—CH3 faces outwards. The silicon atoms, oxygen atoms and the fibers of the silicone emulsion Certain atoms form coordination bonds and hydrogen bonds, so water vapor and air can pass through the fabric, but water drops cannot. The hydroxyl group at the top of the silicone oil emulsion chain is grafted with hydrogen-containing silicone oil, that is, Si in the hydrogen-containing silicone oil. The H bond is hydrolyzed to Si. H, it is dehydrated and grafted with silicone oil terminal hydroxyl groups 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 on the fabric surface at 150-180°C to form a polyorganosiloxane resin film that is insoluble in water and solvents. The methyl group in the silane structure faces outwards, resulting in water repellency, discontinuity and air permeability.
Silicone waterproofing agent is a non-polluting and non-irritating new type of college waterproofing material, which is widely used in advanced countries in the world. After spraying (or brushing) this product on the surface of the building, it can form on the surface that is not noticeable by the naked eye. A layer of colorless, transparent, UV-resistant breathable film. When rain blows on it or encounters moist air, the water droplets will flow naturally, and the moisture in the residence can invade. At the same time, it can also wash away the dust on the surface of the building, thereby making the inner wall Moisture-proof, anti-mildew, exterior wall cleaning and weathering prevention.
Scope of application:
This product is widely applicable to the internal and external walls of various buildings, especially to solve the indoor mildew problem caused by water seepage in the east and north walls of civil houses. In addition, it can also be widely used for moisture-proof and mildew-proof treatment before interior decoration. Anti-pollution cleaning, anti-weathering, and anti-acid rain treatment of the internal and external walls of industrial plants, as well as the waterproofing of reservoirs, water towers, reservoirs, sewage treatment plants, and agricultural irrigation and drainage channels; for ancient buildings, stone monuments, ceramic tiles, libraries, and precision instruments It is also applicable to computer room, computer room, power distribution room, warehouse, etc.