Waterproof mechanism of polyurethane waterproof coating

The waterproof mechanism of waterproof coating is introduced by the editor of Hebei Hongou New Material Waterproof Coating:

Polyurethane waterproof coating. Non tar polyurethane waterproof coating Non tar polyurethane waterproof coating is a two-component material that uses water as a chain extender to avoid the toxicity of amine based chain extenders.

After curing, it forms an elastic and seamless rubber waterproof layer. 1、 Product features: 1. Construction at room temperature, easy to operate, non-toxic and harmless. 2. Natural leveling, good extensibility, can overcome leakage caused by cracking of the base layer. 3. It has excellent weather resistance, oil resistance, seawater resistance, and corrosion resistance. 4. It can be constructed in damp conditions (without visible water), with strong adhesion to shorten the construction period. 2、 Usage: Used for waterproofing in basements, bathrooms, water storage tanks, grain depots, roofs, exterior walls, etc. 3、 Technical specifications: Implementation standard GB/T 19250-2003 project index Tensile strength/MPa ≥1.9 Elongation at break/% ≥450 Tear strength/(N/mm) ≥12 Low temperature bendability/℃ ≤-35 Impermeability 0.3MPa for 30 minutes ：no leak Solid content/% ≥92 Dry time/h ≤8 Practical time/h ≤24 4、 Construction requirements 1. The base surface should be flat, clean, and free from sand and looseness. 2. Pour B material into A material in proportion and stir for 5 minutes using an electric mixer. Generally, apply it in two to three coats using a scraper, applying even and steady force Generally, a 2cm thick cement mortar is used as the protective layer. When making the facade protective layer, sand can be sprinkled on the wall before the last coat of paint is completely cured to enhance the bonding strength 5、 Packaging, transportation, and storage: 1. This product is stored in a dry, ventilated, and cool place, with a shelf life of 6 months from the date of production if not opened. 2. Transportation shall be handled as non dangerous goods.