product manual
A two-component thick-coated aliphatic polyurethane topcoat composed of a hydroxy acrylic resin and an aliphatic isocyanate is prepared by using a word as a base material, a coloring pigment, an auxiliary agent, a solvent, and the like. The product has low VOC content, good thick coating workability, and good adhesion to epoxy coatings. The film is tough, lustrous, has excellent weather resistance, gloss retention and color retention, and has good decorative properties. It is resistant to mineral oil, vegetable oil, petroleum solvents and petroleum products, and has good chemical resistance, water resistance, impact resistance and wear resistance.
Product Usage
It is suitable for high-performance topcoats for high-grade products such as large vehicles, train cars, locomotive fronts, yachts, ships, docks, bridges, machine tools, instrumentation, grain machinery and other advanced products or engineering.
Physical characteristics
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colour |
Various colors
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|
Volume solids (mixed)
|
63±3%
|
|
Recommended film thickness
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Dry film: 40μm
Wet film: 65μm
|
|
Theoretical dosage
|
0.082kg/㎡ @40μm
|
|
Dry（23±2℃）
|
≤2h
|
|
Hard work（23±2℃）
|
≤24h
|
|
Fully cured（23±2℃）
|
7d
|
* Different color finishes, product parameters may be slightly different than the given data
Surface treatment
The front paint should be completely dry
Remove all oil and debris from the paint film
Construction instructions
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The mixing ratio |
Component A: Component B = 4:1 (weight ratio)
Stir well with mechanical agitation
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Maturing time
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5~30min（23±2℃）
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|
Mixed use period
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≤4h（23±2℃）
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|
Thinner
|
HY epoxy thinner
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Construction method
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Painting method |
Brushing, roller coating (applicable)
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Air spray (applicable)
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Airless spray (recommended)
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|
Dilution rate
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0~10%
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0~10%
|
0~5%
|
Airless spraying: ejection pressure: 15~17MPa
Nozzle diameter: 0.4~0.5mm
Air spray: Adjust the viscosity with the matching diluent: 25-30 S (coating -4/23 ± 2℃)
Recoat interval
|
Construction temperature |
5℃
|
20℃
|
30℃
|
|
Minimum recoating time
|
24h
|
16h
|
8h
|
|
Maximum recoating time
|
not limited
|
not limited
|
not limited
|
* When the paint film is exposed for a long time outdoors or the surface is smooth, it has a bad influence on the adhesion of the heavy coating. Therefore, the surface of the paint film must be subjected to brushing, sand sweeping or high-pressure fresh water rinsing, and sufficient time can be maintained during recoating. Interlayer adhesion.
Tool cleaning All tools must be cleaned with ZH polyurethane thinner.
Safety
Use this product with care. Please refer to the MSDS of this product before starting work.
Please pay attention to the safety precautions on the packaging label before and during use. In addition, the safety regulations prescribed by the relevant national or local government should also be observed.
Personal protection includes, but is not limited to, lung, eye and skin protection. If swallowed or otherwise in contact with this product, seek medical attention immediately. Precautions must be taken to prevent fire, explosion and environmental protection.
Precautions
The construction site shall be protected from open flames and may only be constructed in a well ventilated condition. Strong ventilation is required in applications where it is confined or where air is not circulating.
Air humidity: When the relative humidity of the air is greater than 80%, construction is not recommended.
Ambient temperature: When the ambient temperature is below 5℃ or above 40℃, construction is not recommended.
Surface temperature of the substrate: When the surface temperature of the steel is lower than the dew point temperature of 3℃, the construction is not recommended. If the surface temperature of the steel is too high, the surface of the paint film will be defective. Therefore, when the surface temperature of the steel is higher than 50℃, the construction conditions should be adjusted and it will be noon. The construction will be moved to the morning and evening, or the awnings will be erected or moved to the workshop.
Other aspects: There should be good ventilation during construction. When painting, it should prevent the surrounding environment from causing pollution to the paint film, such as sandblasting and paint fog lamps. Avoid construction in the case of rain, snow, fog, sandstorms, and stop construction in areas with strong winds or high pollution. Excessive ventilation will cause the coating to dry too quickly and the paintability of the coating will deteriorate, and a large amount of pollutants ( Such as sand, salt particles, corrosion deposits) will cause the film properties to deteriorate, and the loss will increase.
