(SPUA) what is polyurea two component polyurea spray coating
Polyurea is a type of compound reacted by isocyanate component (short to part A) and amide blend (short to part B). Following the high-solids coatings, waterborne coatings, radiation curable coatings, powder coatings and other pollution free coating technologies, Spray Polyurea Elastomer (referred SPUA) technology is a solvent-free, pollution-free green application coating advanced technology developed to meet environmental requirements in nearly two decades abroad. It’s a revolutionary leap of traditional construction technology which combines new technology new material and new procedures together. Its a breakthrough for changing the traditional anticorrosion protective concept and set up a higher standard for the industrial material protection industry.
Characteristics
SWD two component solvent free environment friendly pure polyurea industrial coating is developed by SWD Urethane Co., USA in 1992. Based on the high reactivity and fast curing property, it can be sprayed forming at any bent, inclined and vertical surface without sagging. With super adhesive strength and impact resistance characteristics, the coating is flexible, impact resistant and seamless that able to completely insulate air and water and oxygen penetration. It integrated anticorrosion, waterproof, wear resistance, aging resistant performances, no pulverization and crack peel up or fall down after long- term outdoor work with alternating ambient conditions of cold, heat, rain and snow.
Specifications
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 470%
Penetrate resistance 2.3Mpa
Temperature variation -40------+120℃
Wear resistance (700g/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 30g/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 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
Overcoating interval min: 1h, max: 24h
Overcoating method Special polyurea equipment spray (imported or local support)
Flash point 200℃
Recommended procedures
No. | Name of products | Layers | Dry film thickness(μm) |
1 | SWD polyurea special primer | 1 | 50 |
2 | SWD900 spray polyurea elastomer | 1 | 2000 |
Total | | 2 | 2050 |
Application scopes Anticorrosion waterproof protection in the fields of construction, chemical, traffic, metallurgy, power generation, aerospace, marine, shipping industries and etc.
grinder project application (great wear-resistance)
package pic.