poyurea special primer

Paint and Coatings

     SWD959 Series SH132 One component

              moisture cure polyurethane (rigid) system

polyurea special primer

Descriptions                Polyurea spray elastomer performance requires cooperating with special primer. The two main functions of primer are, firstly, it can seal air and moisture of the substrate surface, solid the residual particles for foundation reinforcement, avoid bubbles and pinholes generation of the polyurea coating surface. Second, it also increases the adhesive strength between polyurea coating and primer. The one component polyurea special primer developed by SWD Urethane Co., USA is a green and environment friendly product which has high penetration of substrate, high performance of close property, easy to use. It has been successfully applied in many major polyurea projects such as Olympic stadium, the China Railway High-speed, sea water desalination in Australia, etc.

Characteristics               This primer is one component product and easy to perform. With its high penetration properties, it can deep penetrate into the porous surface of the substrate, fix micro defects, and integrate with the substrate together. The film of primer is dense, tough, with high plugging resistance, high performances of anticorrosion, temperature variation, water resistance, without peeling off after long-term immersion in water. With high bonding strength it can significantly increase the adhesive strength of the polyurea coating.

Specifications

Adhesive strength (concrete base)                2.9Mpa（or substrate broken）

Adhesive strength (steel base)                    11.5Mpa

Impact resistance                             ≥50kg•cm

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

Wear resistance（700g/500r）                  12mg

Acid resistance 20%H₂SO₄ or 10%HCI, 30d        no rust no bubbles no peel

Alkali resistance 20%NaOH, 30d                 no rust no bubbles no peel

Salt resistance 60g/L, 30d                       no rust no bubbles no peel

Salt spray resistance 1000h                      no rust no bubbles no peel

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

Data of performance

Color                        colorless and transparent

Luster                        half glazed

Density                       1.05g/cm³

Volume solid content            76%±2%

VOC                         ≤189g/L

Recommended dry film thickness   30-60μm

Theoretical coverage             0.07kg/sqm (calculated by the above solids percentage and dry film thickness of 50 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                      57℃

Recommend procedures                        

Application scopes          Special spray polyurea elastomer for the surface of metal, concrete, wood

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

Packing                    20kg/bucket. 25kg/bucket

Production area            Minhang District, City of Shanghai (10% 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.