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Product classification
Water-based polyurethane two-component topcoat
Classification:
Water-Based Paint
E-mail:WZS1973@163.com
【Overview】Low VOCs content, two-component polyurethane water-based paint.
【Characteristics】High gloss, high hardness, excellent decorative effect, good weather resistance, and excellent chemical resistance. Can be paired with water-based primer or solvent-based primer, with a wide range of applications.
【Composition】Water-based hydroxyl acrylate emulsion resin, modified isocyanate, pigments, additives, deionized water.
【Application】Field of application: Suitable for various high decorative topcoats on metal surfaces such as steel, cast iron, and aluminum. For example: passenger cars, construction machinery, agricultural machinery, vehicles, bus exteriors, wind turbine towers, etc.
【Original Paint Performance】
|
Serial Number |
Item |
Index |
Test Method |
|
1.1 |
Original Paint State |
No foreign matter or hard sediment |
Visual Inspection |
|
1.2 |
Fineness μm, ≤ |
10 |
GB/T1724-2007 |
|
1.3 |
Solid Content %, ≥ |
45 |
GB/T1725-2007 |
|
1.4 |
(Shelf Life) Months |
(6) |
GB6753.3-1986 |
[Construction Performance]
|
Serial Number |
Item |
Index |
|
82 |
Dilution % |
5-10 |
|
2.2 |
Sag limit μm, ≥ |
50 |
|
2.3 |
diluent |
Deionized water |
|
2.4 |
Typical dry film thickness |
30-40μm |
|
2.5 |
Coating method |
Airless spraying, air spraying, brushing, roller coating |
|
2.6 |
Spraying environment |
Temperature: 25±2°C, Humidity: 65±5%RH |
|
2.7 |
Curing conditions |
Naturally dried, 80°C×30min baking curing |
|
2.8 |
Natural curing time |
≤10℃:≈48h; 10-20℃:≈24h; 20-35℃:≈18h; ≥35℃:≈12h |
【Paint film performance】
|
Serial Number |
Item |
Index |
Test Method |
|
3.1 |
Paint film appearance |
In line with the standard plate, smooth and particle-free |
Visual Inspection |
|
3.2 |
Gloss 60°≥ |
85 |
GB/9754-2007 |
|
3.3 |
Pencil hardness (abrasion), ≥ |
H |
GB/T1728-1989 |
|
3.4 |
Impact-resistant Kg ·cm, ≥ |
50 |
GB/T1732-1993 |
|
3.5 |
Flexibility mm, ≤ |
1 |
GB/T1731-1993 |
|
3.6 |
Adhesion, grade, ≤ |
1 |
GB/T1720-1989 |
|
3.7 |
耐酸(50g/L H2SO4)240h |
Non-foaming, allowing for slight discoloration |
GB/T1733-1993 |
|
3.8 |
耐碱(50g/L NaOH)120h |
Non-foaming, allowing for slight discoloration |
GB/T17331993 |
|
3.9 |
耐水性(40℃×240h) |
No discoloration, no blistering, no shedding |
GB/T1733-1993 |
|
3.10 |
Artificially accelerated aging, 1000h |
Non-blistering, non-shedding, allowing for slight discoloration and loss of light |
GB/T1865-2009 |
|
3.11 |
VOCs(g/L),≤ |
250 |
GB/T23985-2009 |
【Construction Instructions】
This product is a two-component coating and is filled in two barrels. When used, it should be mixed according to the prescribed proportion. Once blended, it must be used within the specified use-by time.
(1) After opening the barrel, component A needs to be stirred evenly first, and it is recommended to use a power stirrer to stir.
(2) Mix the curing agent (component B) and the main paint (component A) in the specified proportion, and stir evenly with a mixer.
Varnish-solid ratio: 4:1 (mass ratio)
Dilution ratio: 5-20% (clean water)
Activation after paint adjustment:
|
5℃ |
10℃ |
15℃ |
20℃ |
25℃ |
30℃ |
35℃ |
|
4h |
4h |
3.5h |
3.5h |
3 hours |
2.5h |
2 hours |
[Compatibility] Various types of anti-corrosion primers, electrophoretic primers, etc.
Coating methods: airless spraying, air spraying, brushing, rolling. It is recommended to use airless spraying or air spraying (with pressure tank). The thickness of a single spray should not be too thick, with a wet film thickness not exceeding 120μm. The interval for recoating can proceed once the previous coat is dry to the touch.
Cleaner: Alkaline clean water
Environmental requirements: Minimum construction temperature: 5℃;
Maximum construction humidity: 80% R.H.
Precautions: Do not let the paint remain in the paint tube, spray gun or spraying equipment.
Cleaning: Thoroughly rinse all equipment with cleaner.
Key words:
Water-Based Paint
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