Click on the image to check the artwork
Descriptions Since the reform and opening up 30 years in China, the urban overpasses construction project has come up rapidly as spring plants in each beautiful city. The project contributed significant benefits to the urban transport development and public convenience. However, the accidents of overpass suddenly snapped or collapsed occur frequently in recent years. It caused by incorrectly or unqualified anticorrosion and waterproof protective treatment and makes significant damage to people’s life and state property security. Therefore, the overpass safety maintenance becomes the most important research task for the urban administration. According to the demand of urban transport construction development the SWD Urethane Co. started to develop and produce the overpass protective anticorrosion waterproof coating since the 1980s. It has been already successfully applied in many countries in the Americas and Europe, etc.
Characteristics SWD urban overpass special anticorrosion waterproof coating takes the high performance one component polyurea/polyurethane prepolymer resin as main film forming substances cured by absorption and reaction with air moisture. With inside the high molecule structure of the film coating contains hydrogen bond to make large cohesive force among molecules. The role of hydrogen bonds and urea bonds makes the coating film to be excellent in properties of anticorrosion, waterproof, heat resistance and chemical products resistance.
Specifications
Adhesive strength 3.5 Mpa（or substrate broken）
Impact strength ≥50kg•cm
Tensile strength 18Mpa
Elongation 350%
Penetrate resistance 2.3Mpa
Temperature variation -40------+160℃
Wear resistance (700g/500r） 6mg
Acid resistance 20%H2SO4 or 10%HCI, 30d No rusts no bubbles no peel
Alkali resistance 30%NaOH, 30d No rusts no bubbles no peel
Salt resistance 80g/L, 30d No rusts no bubbles no peel
Salt spray resistance 1000h No rusts no bubbles no peel
Oil resistance (0# diesel, Crude oil 30d) No rusts no bubbles no peel
Data of performance
Color Multiple colors as customer’s need
Luster glazed
Density 1.05g/cm
Volume solid content 81%±2%
VOC ≤185g/L
Recommended dry film thickness 200-350 μm
Theoretical coverage 0.25kg/sq m (calculated by the solids percentage and dry film thickness of 200 microns)
Practical coverage Allow appropriate loss rate
Dry time 1-3 h.
Overcoating interval Min: 3h, Max: 24h
Overcoating method Airless spray, Air spray, Brush, Roller
Flash point 63℃
Recommend procedures
|
No. |
Name of products |
Layers |
Dry film thickness（μm） |
1 |
SWD polyurea special primer |
1 |
50 |
2 |
SWD urban overpass anticorrosion waterproof coating |
1 |
80-150 |
3 |
SWD urban overpass anticorrosion waterproof coating |
1 |
70-150 |
Total |
|
3 |
200-350 |
Application scopes A variety of urban overpass, viaduct, bridge, water conservancy dam project.
Shelf life 10 months (Indoor with dry and cool conditions)
Packing 20kg/bucket. 25kg/bucket
Production area Minghang District, City of Shanghai (30% of raw materials imported from SWD US)
Security To apply this product must be accordance with the relevant national regulation of sanitation, safety and environment protection. Do not even contact the surface of wet coating.
Global applicability Our company aims to provide worldwide customers the same coating products, but sometimes, some adjustments are made to satisfy each region conditions and international norms, in this case, an alternative product data will be provided.
Integrity declaration Our company guarantees the reality of the listed data, due to the diversity and variability of the application environment, please test and verify it before use. We don’t take any other responsibilities except the coating quality self and reserve the right of modifying the listed data without prior notice.