Product Description
STWD959 moisture cure polyurethane industrial anticorrosion protective coating takes one component polyurethane resin polymer as raw material. The film membrane is dense, compact and elastic, it can adapt to the slight deformation without cracks from vibration and weather changes on various metal structure of industrial enterprises. It avoids the penetration of air, moisture and other corrosion media to be anti rust of metal structure. The coating film has a lot of urea bond, biuret bond, urethane bond and hydrogen bond to make excellent physical properties and anticorrosion performance.
Features and advantages
* excellent adhesive strength, bond solid with carbon steel, concrete and other substrates.
* coating membrane is dense and flexible, to withstand the damage of cyclic stress failure
* high solid content and meet the requirements of environmentally friendly
*excellent mechanical property, abrasion resistance, impact resistance and scratch resistance
*excellent waterproof
*excellent anticorrosion property and resistance to many chemical rust medium such as salt spray, acid rain.
*excellent anti-aging, no crack and no powder after long term outdoor use.
*hand brushable coating, easy to apply, multiple application method is suitable
*single component, easy application without need of mix ratio with other parts.
Typical use
Anticorrosion waterproof protection in the industrial enterprises of oil, chemistry, transportation, construction, power plant etc.
Product information
| Item |
Results |
| Appearance |
Color adjustable |
| Viscosity (cps )@20ºC |
250 |
| Solid content (%) |
≥65 |
| surface dry time (h) |
2-4 |
| Pot life (h) |
1 |
| theoretical coverage |
0.13kg/m2(thickness 100um) |
Physical property
| Item |
Test standard |
Results |
| pencil hardness |
GB/T 6739-2006 |
2H |
| bending test (cylindrical mandrel) mm |
GB/T 6742-1986 |
1 |
| breakdown resistance strength (kv/mm) |
HG/T 3330-1980 |
250 |
| impact resistance (kg·cm) |
GB/T 1732 |
60 |
| resistance to temperature changes (-40--150ºC) 24h |
GB/9278-1988 |
Normal |
| adhesive strength (Mpa), metal base |
ASTM D-3359 |
5A (highest) |
| density g/cm3 |
GB/T 6750-2007 |
1.03 |
Chemical resistance
| Acid resistance 50% H2SO4 or15%HCl, 30d |
No rust, no bubbles, no peel off |
| Alkali resistance 50%NaOH, 30d |
No rust, no bubbles, no peel off |
| Salt resistance, 50g/L,30d |
No rust, no bubbles, no peel off |
| Salt spray resistance, 2000h |
No rust, no bubbles, no peel off |
| Oil resistance 0# diesel, crud e oil, 30d |
No bubbles, no peel off |
| ( For reference: pay attention to the influence of ventilation, splash and spillage. Independent immersion testing is recommended if requires other specific data.) |
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