Product Description
With China paying more attention to ocean strategy, the marine engineering development projects increased year by year, which has a higher demand for the projects anticorrosion as well. STWD9592 is a high performance one component moisture cure polyurethane coating material, the coating adopts large amount of urea bond, two urea bond, urethane bond and hydrogen bond during the pre polymerization process, it is cured after absorption with air moisture, the dense cross-linked interpenetrating network make the coating film has robust chemical resistance and physical property. It has excellent infiltration and permeability characteristics, and it will react with the hydroxyl bond of the substrate so that the adhesive strength is greatly improved with chemical and physical adhesion. It is flexible material can be long term applied on metal bridges and avoid cracking, it is an ideal material for the marine heavy duty anticorrosion projects protection.
Features and advantages
* excellent adhesive strength, bond solid with carbon steel, concrete and other substrates.
* high solid content and meet the requirements of environmentally friendly
*excellent mechanical property, wearable, impact resistance and scratch resistance; flexible coating to resist the cyclic stress
*excellent waterproof property
*excellent anticorrosion property and resistance to many chemical rust medium such as salt spray, acid rain etc.
*it has high sealing property, to effectively insulate the corrosion channels
*can be applied by hand or other machines spraying
*single component, easy to apply and can guarantee the uniform quality film.
Typical use Anticorrosion protection coating of various marine projects.
Product information
| Item |
Results |
| Appearance |
Color adjustable |
| Viscosity (cps )@20ºC |
300 |
| Solid content (%) |
≥68 |
| surface dry time (h) |
1-3 |
| Pot life (h) |
1h |
| theoretical coverage |
0.20kg/m2(thickness 150um) |
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 |
1.02 |
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, 80g/L,30d |
No rust, no bubbles, no peel off |
| Salt spray resistance, 3000h |
No rust, no bubbles, no peel off |
| Oil resistance 0# diesel, crude 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 detailed data.) |
Application environment
Relative temperature: -5~-+35ºC
Relative humidity: RH%:35-85%
Dew point: the temperature of metal surface must have 3ºC than dew point.
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