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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®Spraying polyurea waterproof coating is an elastomer waterproof coating composed of isocyanate compound as component A and amine compound as component B. The two components are mixed and reacted to form a high-strength waterproof film layer by spraying process.
Product Features
L high reactivity, fast curing speed, can be in any curved surface, inclined plane and vertical surface spray molding, does not produce sagging phenomenon, 5 seconds gel, 1 minute to reach walking strength.
L high solid content, complete sets of equipment spraying, a spray can reach the design thickness, high efficiency, to overcome the shortcomings of many times in the past.
L and all kinds of base (including concrete, metal, glass, wood, polyurethane foam board, etc.) have strong adhesion.
L is not sensitive to temperature and humidity, and is less affected by the environment during construction.
l Good weather resistance, aging resistance, high and low temperature stability, can be used for a long time at 120 ℃, and can withstand short-term thermal shock at 350 ℃.
l Excellent basic physical and chemical properties, such as tensile strength, tear strength, impact strength, adhesion, low temperature toughness, insulation strength, elongation, wear resistance, etc.
L coating continuous, compact, seamless, no pinhole, can be added to a variety of pigments, fillers, made of different colors and functions of the coating, both waterproof, decorative, anti-corrosion, anti-slippery function, beautiful and practical.
l Use complete sets of equipment for spraying, convenient construction, high efficiency, a construction can meet the design thickness requirements, to overcome the shortcomings of the past many times brushing.
Specification classification
|
By Physical Performance |
Type I/Type II |
Scope of application
l It can be widely used in various fields and types of waterproof and anti-corrosion projects, and is most suitable for the following types of projects:
l Bridge deck waterproofing for high-speed railways, tunnels, and concrete pavements.
l Waterproof and moisture-proof of underground works of industrial and civil buildings, and waterproof of structures such as indoor swimming pools and fire pools.
l Subway, sewage treatment plant, landfill and other municipal engineering waterproof.
l Waterproof and anti-corrosion of water conservancy facilities such as canals and pools; waterproof and anti-corrosion of sports grounds and stadium stands; waterproof and anti-corrosion of industrial storage tanks and large components.
l Bridge, apron, industrial floor, parking lot and other wear-resistant waterproof layer.
Executive standards
Products in accordance with the national standard "spray polyurea waterproof coating" GB/T23446-2009 production and manufacturing.
Performance indicators meet standard requirements
Part of the physical performance indicators at a glance:
|
Project |
Indicator (Type I) |
Indicators (Class II) |
|
Solid content |
≥ 96% |
≥98% |
|
Gel time |
≤ 45s |
≤ 45s |
|
Table dry time |
≤ 120s |
≤ 120s |
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Tensile strength |
≥ 10.0MPa |
≥ 16.0MPa |
|
Elongation at break |
≥ 300% |
≥ 450% |
|
Tear strength |
≥ 40N/mm |
≥ 50N/mm |
|
Low temperature bending |
≤-35 ℃ |
≤-40 ℃ |
|
impervious to water |
0.4MPa, impervious to water for 2h |
0.4MPa, impervious to water for 2h |
|
Heating expansion rate |
Elongation ≤ 1.0% Shrinkage ≤ 1.0% |
Elongation ≤ 1.0% Shrinkage ≤ 1.0% |
|
bond strength |
≥ 2.0MPa |
≥ 2.5MPa |
|
water absorption |
≤5.0% |
≤5.0% |
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