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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®PPF polyethylene polypropylene (polyester) waterproofing membrane is a waterproofing membrane made of polyethylene sheet, additives and high-strength polypropylene (polyester) non-woven fabric, which is compounded by an automatic production line.
l Polyethylene Sheet: Pure virgin polyethylene particles.
l Auxiliaries: anti-aging agent, stabilizer, sticking agent, etc.
Product Features
l High tensile strength, strong impermeability and low expansion coefficient.
l Pure raw polyethylene raw material manufacturing, high temperature does not wrinkle, low temperature is not brittle,-40 ℃ ~ 60 ℃ environment is stable and not deformed.
l The use of cement cementitious material paste, the base surface requirements are low, the scope of adaptation is wide, the construction is simple and easy.
l No open flame, no solvent, green environmental protection.
Specification classification
|
Kind |
FS2 (polypropylene) |
|
Thickness |
0.7mm/0.8mm/0.9mm/1.2mm |
|
Width |
1000mm/1200mm |
|
Length |
50m/100m |
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 Applicable to the construction of underground engineering, roofing engineering, kitchen and bathroom engineering.
l Suitable for planting green roof, pipe gallery roof and landscape water system.
Construction process
l Basic requirements: solid, no sediment, laitance, no empty drum, loose, sand and other phenomena.
lInterface treatment: wetting the base layer to a wet state without open water.
l Preparation of mucilage: according to the temperature and humidity, add clean water into the batching barrel according to the water cement ratio of 0.35~0.40, then add appropriate amount of 42.5Mpa ordinary Portland cement, and fully mix into uniform, fine and non-lumpy cement slurry. The construction of the facade should be mixed with 0.5 ~ 1% by weight of the slurry.
l Trial laying of coiled material: lay the coiled material flat on the base surface, align the elastic line or the overlapping edge of adjacent coiled material, adjust the overlapping width, and rewind after standing for a period of time to release the stress.
l Scraping glue: the glue is scraped on the base (plane) or scraped on the coil bonding surface (elevation), with a thickness of 2~3mm.
l Spreading coil: push and roll forward to lay the coil, drive the slurry and exhaust, so that the coil is closely bonded with the mucilage and the base.
performance index
Products in accordance with the national standard "polymer waterproof material part 1: sheet" GB18173.1-2012 production and manufacturing.
Performance indicators meet standard requirements
List of physical performance indicators of coil parts:
|
Project |
Indicator (FS2) |
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Tensile strength (normal temperature) |
≥60 n/mm |
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Elongation at break (normal temperature) |
≥ 400% |
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Tear strength |
≥50 N |
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impervious to water |
0.3MPa,30min, no leakage |
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low temperature bending |
-20 ℃, no crack |
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Composite strength (FS2 type skin and core) |
≥ 0.8 MPa |
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For FS2 composite sheets with a total thickness of less than 1.0mm, the tensile strength (longitudinal/transverse) index shall not be less than 50N/cm at normal temperature (23 ℃), and the elongation at break (longitudinal/transverse) index shall not be less than 100 at normal temperature (23 ℃). |
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