steel structure bridge special anticorrosion waterproof coating

Paint and Coatings

 SWD952 Series SH119 One component moisture cure

polyurethane (elastic) system steel structure

 bridge special anticorrosion protective coating

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Descriptions              In general, after the bridge steel structure is brushed the anticorrosion coating in the factory, it will be transported to the construction site for welding molding. In the lifting and transportation process of steel structure, the anticorrosion coating is easy to be damaged. Together with the defects from welding positions anticorrosion treatment, the effect of bridge steel structure anticorrosion cannot meet the design requirements. The bridge steel structure special anticorrosion coating developed by SWD Urethane Co., USA has good performances of wear resistance and impact strength, the curing film coating can bear reasonable collision in the transportation process and without damages, now it has been widely used in many areas of the Europe and Americas.

Characteristics              Process synthesizing from high performances of one component polyurea polyurethane resin prepolymer, film coating is dense, tough with high impact strength, fitting for the installation process of steel bridge. The presence of large amount of urethane bond, ureido ester bond and oil unsaturated bond makes it to be excellent in properties of anticorrosion, wear resistance, anti-aging, temperature variation, chemical resistance. Coating has a high tolerance on construction environment, can be painted on the hand brushable low rust surface and cured on the condition of low temperature and high humidity. It is not only suitable for the new steel bridge anticorrosion and also more convenient and effective for the outdoor old steel structure repair.

Specifications

Adhesive strength                            10.2Mpa

Impact resistance                             ≥50kg•cm

Tensile strength                               17Mpa

Elongation                                   360%

Temperature variation                         -40------+180℃

Wear resistance（700g/500r）                  9.5mg

Acid resistance 40%H₂SO₄ or 15%HCI, 30d        no rust no bubbles no peel

Alkali resistance 40%NaOH, 30d                 no rust no bubbles no peel

Salt resistance 100g/L, 30d                       no rust no bubbles no peel

Salt spray resistance 2000h                       no rust no bubbles no peel

Oil resistance 0# diesel Crude oil 30d              no rust no bubbles no peel

Data of performance

Color                        Multiple colors as customers’ need

Luster                        Highlight

Density                       1.06g/cm³

Volume solid content            79%±2%

VOC                           ≤196g/L

Recommended dry film thickness   200-250μm (system)

Theoretical coverage             0.28kg/sqm (calculated by the above solids percentage and dry film thickness of 200 microns)

Practical coverage                Allow appropriate loss rate

Dry time                       1-3h

Overcoating interval              min: 3h, max: 24h

Overcoating method              Airless spray, Air spray, Brush, Roller

Flash point                      51℃

Recommend procedures

Application scopes           The repair of various of new bridge steel structure and old bridge steel structure.

Shelf life                  10 months (Indoor with dry and cool conditions)

Packing                    20kg/bucket. 25kg/bucket

Production area             Minhang District, City of Shanghai（20% 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. Avoid contacting the wet coating.

Global applicability         Our company aims to provide worldwide customers the same  coatings, but sometimes, some small 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 modification the listed data without prior notice.