urban overpass special anticorrosion waterproof coating

Paint and Coatings

 SWD952 Series SH113 One component moisture         cure polyurea polyurethane (elastic) system

        urban overpass special anticorrosion waterproof coating

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

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.