Product Description
STWD8001 is a two component universal polyurethane topcoat, can be re-coated, with anticorrosion and decoration function.
Product features and advantages
* coating film is tough, shine, various color is available
* no-yellow, no-powdery and anti-aging, with excellent weather resistance and color keeping decoration effect
* high adhesive strength, with good compatible with polyurethane, epoxy, chlorinated rubber, alkyd, phenolic and other coatings.
* excellent wearable and impact resistance
* excellent chemical resistance to acid, alkali and salt.
* excellent anticorrosion effect
* excellent waterproof property
* durable, reduce the maintenance cost for life long
* extend the service life of the sprayed structure
Typical use
Steel structure anticorrosion decoration of petroleum, chemistry, buildings, transportation, electricity, steel, ocean, ports, coal mining, municipal protection and other areas.
Product information
| Item |
Part A |
Part B |
| Appearance |
Light yellow liquid |
Color adjustable |
| Specific gravity (g/cm3 ) |
1.05 |
1.25 |
| Viscosity (cps) at 20ºC |
70 |
550 |
| Solid content (%) |
45 |
70 |
| Mix ratio (by weight) |
1 |
4 |
| surface dry tme (h) |
1-3 |
| theoretical coverage (dft) |
0.12kg/m2 (thickness 50um) |
Physical property
| Item |
Test standard |
Results |
| Pencil hardness |
GB/T 6739-2006 |
1H |
| Bending strength (cylindrical mandrel) mm |
GB/T 6742-1986 |
1 |
| Adhesive strength/Mpa (pull-off test) |
GB/T 5210-2006 |
8Mpa |
| Abrasion resistance (750g/500r)mg |
HG/T 3831-2006 |
6 |
| Impact resistance kg·cm |
GB/T 1732 |
50 |
| Weather resistance artificial accelerated aging 1000h |
GB/T14522-1993 |
Loss of light <1, powdery<1 |
Chemical resistance
| Acid resistance 30%H2SO4 or 10%HCl,30d |
no rust, no bubbles, no peel off |
| Alkali resistance 30%NaOH, 30d |
no rust, no bubbles, no peel off |
| Salt resistance 30g/L,30d |
no rust, no bubbles, no peel off |
| Salt spray resistance, 2000h |
no rust, no bubbles, no peel off |
| Oil resistance 0# diesel, 30d |
no rust, 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) |
Application environment
Environment temperature: -5 ~+ 35ºC
Relative humidity: ≤85%
Dew point: ≥3ºC
Application tips
Hand brush, roller
Air spray, air pressure 0.3-0.5Mpa
Airless spray, spray pressure 15-20Mpa
Recommended dft: 30-60 um
Re-coating interval: ≥2h
Application note
Agitate part B well prior to use.
Mix it well with right ratio, pour out the limited material to use.
The rest material in the buckets should be sealed well immediately to avoid moisture adsorption.
Keep dry and clean during application, forbidden to contact with water, alcohol, acid, alkali.
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