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Dayu GroupDayu Group was founded in 1998. It is a large-scale modern comprehensive enterprise integrating R & D, production, sales, construction and technical services. It is one of the leading enterprises in China's waterproof industry. Waterproof industry's top ten most influential brands, China's top 500 building materials enterprises, China's top 500 real estate enterprises preferred material suppliers.
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ProductsDayu Group has advanced production equipment and R & D resources, domestic and foreign joint R & D center and production base. With exquisite technology to achieve continuous upgrading and innovation of products, a number of products have been included in the national construction industry waterproof special scientific and technological achievements promotion project, obtained the first-class construction qualification of waterproof, thermal insulation and anti-corrosion integration, and provided high quality waterproof series products and construction services for many national major projects.
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ApplicationDayu Group and China Academy of Building Research have jointly established Dayu Technology Research and Development Center (provincial level) and Engineering Research and Development Center. Waterproof materials can be widely used in underground, roof, tunnel, high-speed rail, subway, bridge, municipal, environmental protection and other fields. In order to solve the problem of building waterproof leakage to provide a comprehensive and efficient solution, to achieve the same life of waterproof materials and buildings.
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CaseDayu Group has provided high quality waterproof products and construction services for major national projects such as the Olympic Village of the Beijing Olympic Games, Wukesong Gymnasium, Beijing Morgan Center, Shenyang Metro, Qingdao Metro and so on. at the same time, it has also reached strategic cooperation with many well-known real estate enterprises such as Longhu Real Estate, China Merchants Group and Greenland Group.
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Contact UsNational unified hotline: 400-990-6678
Email: lndy@lndy.top
Join us: +86-427-5918022
Started in 1998, the world's leading integrated provider of waterproof services
Since 1998，Leading Integrated Waterproof Provider In The World！
Product overview
Dayu®Two-component polyurethane coating is a two-component chemical reaction curing waterproof coating. When in use, the and B components are uniformly coagulated according to the specified proportion, and after brushing, they are cross-linked and cured on the base surface to form a rubber-like elastic coating waterproof layer.
l A component: an isocyanate-terminated prepolymer obtained from a polyether and an isocyanate.
L B component: plasticizer, curing agent, thickening agent, initial setting agent, filler and other color liquid.
Product Features
l Chemical reaction curing, low temperature adaptation, rapid film formation.
l Good bonding performance, high tensile strength, high elongation, good elasticity, good resistance to high and low temperature performance.
l The film is dense, no pinhole bubbles *, no seams, waterproof and anti-permeability.
l Good sealing performance, especially suitable for special-shaped structure waterproof, such as pipe root, floor drain, gutter, tiger window and other node processing.
* Can be achieved under qualified base and strict process conditions.
Specification classification
|
Kind |
Two-component (M) |
|
Model |
Type I/Type II/Type III |
Scope of application
l It is suitable for industrial, civil, municipal and other construction projects, including administrative, residential, commercial, scientific research, medical, school, grain depot, pipe gallery and other buildings.
l Suitable for building basement, roof, toilet bath room *, swimming pool and other waterproof parts.
l It is only used for waterproofing the facing water surface of the fortified part.
* Ventilated or anti-toxic conditions before use.
Construction process
L grass-roots requirements: solid, dry, clean, free of sediment, laitance, no empty drum, loose, sand and other phenomena, yin and yang angle should be rammed arc angle.
l Ingredients: Weigh strictly according to the ratio marked by the packaging barrel, add component A to component B and stir well.
l Coating methods: scraping (scraper), rolling (wool roller), spraying (matching spraying equipment).
L primer: depending on the ambient temperature, add appropriate amount of compatible solvent * to adjust the diluted coating, and evenly apply thin coating * to the base layer.
* Solvent type: non-alcoholic unleaded gasoline, acetone, naphthenic oil, other solvents should be tested.
* Incorporation ratio: 10% ~ 30%.
* Thin coating: thickness should not exceed 0.3mm.
L surface coating: multiple thin coating films shall be formed, and the second coating shall be applied only after the front coating is completely dry (non-sticky), and the brushing direction of each coating shall be perpendicular to each other.
Each thickness: not more than 0.5mm, according to the design thickness to determine the number of brushing.
Reference dosage: 1.5~1.8kg/㎡ · mm.
Consistency adjustment: if the consistency is high and the construction is inconvenient, add the above matching solvent, which should not exceed 5% of the amount of ingredients.
Strengthening treatment: Yin and Yang angle, node can be placed in the process of brushing alkali-resistant glass fiber mesh cloth, and in the appropriate thick coating.
L optional anti-aircraft drum measures: nail and hang steel wire mesh, wipe interface adhesive, and sand spreading on surface layer (priority is given in order).
performance index
Products in accordance with the national standard "polyurethane waterproof coating" GB/T19250-2013 production and manufacturing.
The performance index meets the requirements of category M in the standard.
Part of the physical performance indicators at a glance:
|
Project |
Indicator (Type I) |
Indicators (Class II) |
Indicators (Class III) |
|
Solid content |
≥ 92% |
≥ 92% |
≥ 92% |
|
Table dry time |
≤ 12h |
≤ 12h |
≤ 12h |
|
Done time |
≤ 24h |
≤ 24h |
≤ 24h |
|
Tensile strength |
≥ 2.00 MPa |
≥ 6.00 MPa |
≥ 12.0 MPa |
|
Elongation at break |
≥ 500% |
≥ 450% |
≥ 250% |
|
Tear strength |
≥15 n/mm |
≥30 n/mm |
≥40 n/mm |
|
Low temperature bending |
-35 ℃, no crack |
-35 ℃, no crack |
-35 ℃, no crack |
|
impervious to water |
0.3MPa，120min impervious to water |
0.3MPa，120min impervious to water |
0.3MPa，120min impervious to water |
|
bond strength |
≥ 1.0MPa |
≥ 1.0MPa |
≥ 1.0MPa |
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