Polyurea Waterproof, Antibacterial, and Wear-Resistant Coating for Drinking Water

• CAS No.: 9014
• Color: All Color Can Offer
• Appearance: Liquid
• Main Raw Material: Polyurethane
• Method: Spray
• Level: Finish Coat
• Model NO.: 9014
• Drying Method: Chemical Mechanical Curing
• Certification: ISO14001, ISO9001
• Substrate: Steel
• Components: Film Forming Matter
• Formation Mechanism: Conversion Type
• Transport Package: Barrel/Pallet
• Specification: 210L
• Trademark: STWD
• Origin: China
• Production Capacity: 80000pieces/Year

Product Description

Descriptions               STWD900 SPUA potable water anticorrosion waterproof coating is a polymer reacted by Isocyanate (party A) and Amino compound (party B). The technical formulation is imported from STWD Urethane Company, the raw materials and production process adopted are harmless and toxic free, it meets the requirements of Standard Specification for Potable Water Products and gained   License Number of Health permit of Ministry of chemical industry. The operative norm is (Jiangsu) sanitary water (2016) number 3200-0005. Following the high-solids coatings, waterborne coatings, radiation curable coatings, powder coatings and other low (no) pollution coating technologies, Spray Polyurea Elastomer (short as SPUA) technology is a new solvent-free, pollution-free green application technology which is developed to meet environmental requirements in nearly two decades abroad. It has been used in drinking water pipelines, storage tanks and water tanks that meet the food standards, with its outstanding waterproof, anticorrosion and protective capabilities, as well as environmental protection, pollution-free sanitary performance.
       
Characteristics             The product has high reactivity, complete chemical reaction, no harmful substances in the cured film, also with no chemical precipitation in actual use. Rapid cure, can be sprayed forming on any bent, slope and vertical surfaces without sagging. Dense and seamless coating, completely isolated from air, water, and other media infiltration or penetration. It has excellent adhesive strength and impact resistance, combines good anticorrosion waterproof, abrasion resistance, anti-aging and safe environment protection performance. The hardness is adjustable to meet high elasticity and high ductility or high hardness and high strength support requirements.
                          
Characteristics
Adhesive strength (concrete base)                   ≥2.9 Mpa( or substrate broken)
Adhesive strength (steel base)                      11.3 Mpa
Tear strength                                    80.6kN/m
Tensile strength                                  17.8Mpa
Elongation                                      472%
Hardness                                        Shore A ~ Shore D
Penetrate resistance                               2.3Mpa
Temperature variation                             -40------+120ºC
Wear resistance (750g/500r)                        5mg
Acid resistance (10%H₂SO₄ or 10%HCI, 30d)           no rust no bubbles no peel
Alkali resistance 10%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
Hygienic performance                         conforms to the regulation for the evaluation of protective materials for drinking water, issued by Sanitary license approval [2001]161
                          
Data of performance
Color                        White
Luster                        glazed
Density                       1.01g/cm³  
Volume solid content            99% ±1%
VOC                         0
Recommended dry film thickness   1000-3000μm
Theoretical coverage             2.04kg/sqm (calculated by the above solids percentage and dry film thickness of 2000 microns)
Practical coverage                Allow appropriate loss rate
Dry time                       5-20s solid dry time: 20 min
Overcoating interval              min: 1h, max: 24h
Overcoating method             Special polyurea equipment spray (imported or local support)
Flash point                      200ºC

Recommended procedures (or as design requirements)

No.	Name of products	Layers	Dry film thickness(μm)
1	STWD polyurea special primer	1	50
2	STWD900 SPUA drinking water anticorrosion waterproof coating material	1	2000
Total		2	2050

Application scopes           Water pipes, water purification pipelines, water tanks, water pools, water storage tanks and other areas of drinking water sanitation standards of anti-corrosion waterproof projects
                                                                               
Shelf life                  8 months (Indoor with dry and cool conditions)
                                                                                
Packing                    Component A: 220kg/bucket, component B: 200kg/bucket
                                                                                

Production places              Minhang Shanghai City, and Nantong coastal industrial park production base in Jiangsu (15% of the raw materials imported from STWD US, 30% from multinational company in Shanghai, 55% from local support)
                                                                                
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 with standard coating products, however custom adjustments can be made to adapt and leverage different regional conditions and international norms. In this case, additional 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.