In the automotive painting industry, 1k automotive paint is widely used for its convenience and excellent performance. 1K paint, also known as one-component paint, is different from 2K paint (two-component paint) in that it does not require mixing with a curing agent and can be used by mixing with a suitable proportion of diluent.
The correct mixing ratio is a key factor in ensuring the painting effect. This article will discuss in detail the mixing ratio, application method, usage precautions and advantages of 1k car paint.
What is 1k automotive paint?
1k automotive paint is a one-component paint that usually includes two types of color paint and clear paint. Its formula already contains all the necessary ingredients and only needs to add the appropriate amount of diluent to use it without adding a curing agent. 1K paint dries in the air and is easy to apply. It is widely used for touch-up spraying and overall painting of automobiles.
What are the types of 1k automotive paint?
● 1K color paint: used to provide color and hiding power to the surface of the car, usually needs to be applied on the primer or intermediate paint layer.
● 1K clearcoat: used to provide gloss and protective layer, usually covered on the color paint layer to increase the wear resistance and UV resistance of the coating.
What is the mixing ratio of 1k car paint?
1. General mixing ratio
The mixing ratio of 1k automotive paint is usually provided by the manufacturer, and it may vary for different brands and models of paint. In general, the mixing ratio of 1K color paint and 1K clearcoat is roughly as follows:
● 1K color paint: The mixing ratio of 1K color paint and thinner is usually 4:1, that is, 4 parts of 1K color paint to 1 part of thinner.
● 1K clearcoat: The mixing ratio of 1K clearcoat and thinner is usually 2:1, that is, 2 parts of 1K clearcoat to 1 part of thinner.
These ratios are general reference ratios, and the specific mixing ratios should be adjusted according to the technical specifications of the paint products.
2. Adjustment factors of mixing ratio
The mixing ratio is not fixed, it will be affected by many factors:
● Ambient temperature and humidity: In a high temperature and high humidity environment, it may be necessary to increase the proportion of thinner to ensure the leveling and drying speed of the paint film.
● Spraying equipment: Different types of spraying equipment (such as gravity spray guns, suction spray guns) have different requirements for the viscosity of the paint, and the mixing ratio needs to be adjusted according to the equipment.
● Painting requirements: According to the different requirements of the coating layer (such as primer, intermediate paint, topcoat) and the coating effect, the mixing ratio should be adjusted appropriately to achieve the best construction effect.
1k car paint application method
1. Surface treatment
Before spraying 1k car paint, surface treatment is a key step. Make sure that the coating surface is clean, dry, free of grease and dust. Common surface treatment steps include:
● Sanding: Sand the coating surface with sandpaper to remove the old paint layer and rust and increase the adhesion of the new paint film.
● Cleaning: Clean the polished surface with a cleaner and degreaser to ensure that there is no grease and dust residue.
● Primer application: Apply anti-rust primer to the bare metal surface to enhance the anti-corrosion performance.
2. Mixing and spraying
● Mixing: Mix 1K paint and thinner evenly according to the mixing ratio provided by the manufacturer. Use a stirrer or stir manually to ensure that the mixture is free of precipitation and lumps.
● Spraying: Use a suitable spray gun to spray according to the specified spraying pressure and nozzle size. Usually 2-3 layers are required, and a proper drying time (about 5-10 minutes) is maintained between each layer.
3. Drying and sanding
● Drying: After spraying, the paint film needs to be allowed to dry naturally. 1K color paint usually dries within 20-30 minutes, and it takes 1-2 hours to dry completely. The surface drying time of 1K clear varnish is about 10-20 minutes, and it takes 2-3 hours to dry completely.
● Sanding: For situations where multiple spraying is required, after each layer of paint film dries, lightly sand it with fine sandpaper (such as P800-P1000) to increase the adhesion of the next layer of paint film.
What are the precautions for using 1k automotive paint?
1. Environmental control
● Temperature and humidity: The painting environment temperature should be maintained at 15-25°C, and the humidity should be controlled between 50-70%. Too high or too low temperature and humidity will affect the leveling and drying speed of the paint film.
● Ventilation: Maintain good ventilation to ensure that the solvent evaporates quickly and avoid bubbling and sagging of the paint film.
2. Construction safety
● Protective measures: Wear a mask, protective gloves and goggles during construction to avoid inhaling paint mist and contact with the skin.
● Fire prevention measures: 1k automotive paint and thinner are flammable items. Avoid fire sources and maintain good ventilation at the construction site.
3. Accuracy of mixing ratio
● Accurate measurement: Use a special measuring cup or scale to ensure that the mixing ratio of 1K paint and thinner is accurate. Inaccurate mixing ratios can affect the performance and effect of the paint film.
● Timely use: The mixed paint should be used as soon as possible to avoid long-term storage. Mixed paint stored for too long will cause the diluent to volatilize, affecting the spraying effect.
What are the advantages of 1k automotive paint?
1. Convenience
1k car paint does not require the addition of curing agent. It can be used by mixing with diluent. It is easy to operate and reduces the construction steps. It is suitable for quick repairs and small-area spraying.
2. Excellent construction performance
1k car paint has good leveling and hiding power. After spraying, the paint film is flat and smooth, with uniform color and high gloss. Fast drying speed shortens construction time and improves work efficiency.
3. Environmental protection
Hyundai 1k automotive paint adopts a low VOC (volatile organic compound) formula to reduce pollution to the environment and health hazards to construction workers. Water-based 1K paint is a representative of environmentally friendly paint and has gradually become the mainstream choice in the market.
Conclusion
1k automotive paint is widely used in automotive painting and repairing due to its convenient operation and excellent performance. The correct mixing ratio is the key to ensure the coating effect. It should be mixed strictly according to the ratio provided by the manufacturer, and appropriately adjusted according to environmental conditions and construction requirements.
In actual operation, construction workers need to pay attention to environmental control, construction safety and the accuracy of the mixing ratio to ensure the smooth progress of the coating process. With the improvement of environmental awareness, low VOC and water-based 1k car paint have gradually become the mainstream choice of the market, promoting the green development of the automotive coating industry.