industry building wall anticorrosion waterproof coating

Paint and Coatings

SWD952 Series SH114 One component

moisture cure polyurea polyurethane (elastic) system

industry building wall anticorrosion waterproof coating

Descriptions              The corrosion of industry building reinforced concrete material has two types: First is corrosion directly damage the concrete self due to lack of durability, second is that corrosive acid medium penetrated inside to stimulate steel structure then caused the steel bar surface lost passivation then be active for corrosion. When the concrete was invaded by acid gases or other substances to lower its surface alkalinity, the steel material turns from passive state into activated state and starts to corrode. The acid gas such as carbon dioxide gradually penetrates along the concrete cracks or pores from external to internal and takes place neutralization reaction with the calcium hydroxide in concrete known as carbonation. In order to effectively suppress chemical plant wall corrosion, avoid accidents and extend its work life, SWD Urethane Co., USA developed industry building wall anticorrosion waterproof coating since 1980s and it has been widely used in American market.

Characteristics            SWD one component moisture cure polyurea/ polyurethane coating is simply performance, no environmental pollution. With high density, flexible, high adhesive strength, formed film coating bonds with substrate without seams, able to effectively prevent variety of corrosive gases and moisture to penetrate the wall and then damage the wall internal structure. Inside of the formed coating film contains large amount of carbamate bonds, biuret bond and urea bond. The hydrogen bond is specially existed to make high molecules cohesive force. It caused coating possessed super strong properties of anticorrosion, wear resistance, temperature variation, aging resistance and chemicals resistance etc. and provide long-term effective protection for wall.

Specifications

Adhesive strength                               3.2 Mpa( or substrate broken)

Impact strength                                  ≥50kg•cm

Tensile strength                                  18Mpa

Elongation                                      330%

Penetrate resistance                               2.5Mpa

Temperature variation                             -40------+160℃

Wear resistance  （700g/500r）                     12mg

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

Alkali resistance 30%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  

Date of performance

Color                        Multiple colors as customers’ need

Luster                        half glazed

Density                       1.05g/cm

Volume solid content            82%±2%

VOC                         ≤173g/L

Recommended dry film thickness   150-200μm

Theoretical coverage             0.23kg/sqm (calculated by the above solids percentage and dry film thickness of 175 microns)

Practical coverage                Allow appropriate loss rate

Dry time                       1-3h

Overcoating interval              min: 3h, max: 26h

Overcoating method              Airless spray, Air spray, Brush, Roller

Flash point                      65℃

Recommend procedures

Application scopes          Various industry buildings internal and external wall anticorrosion and waterproof

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

Packing                    20kg/bucket, 25kg/bucket

Production area              Minhang District, City of Shanghai (25% 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 some small adjustments will be made to follow up different 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.