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To paint the wall, you need to choose the type of paint and water paint. Each of them has its own advantages and characteristics. Therefore, we will decide according to their functional characteristics when choosing. However, first of all, we need everyone to first Take a look at the disadvantages of water paint. You must know its disadvantages before you can use it. Moreover, many people still don’t know what the difference between water paint and paint is.

Disadvantages of water paint

Water-based coatings have high requirements on the cleanliness of the construction process and the surface of the material. Due to the large surface tension of water, the dirt is likely to cause shrinkage of the coating film; the dispersion stability of water-based coatings against strong mechanical forces is poor, and the flow rate in the conveying pipeline changes rapidly When the dispersed particles are compressed into solid particles, the coating film will be pitted. It is required that the conveying pipeline is in good shape and the pipe wall is free of defects.

The water-based paint is highly corrosive to the coating equipment, so an anti-corrosion lining or stainless steel material is required, and the equipment cost is high. The corrosion of the water-based paint to the transmission pipeline, the dissolution of the metal, the precipitation of dispersed particles, and the pitting of the coating film, also require the use of stainless steel pipes.

Baking water-based coatings have stricter requirements on construction environmental conditions (temperature, humidity), which increases the investment in temperature and humidity control equipment, and also increases energy consumption. The latent heat of evaporation of water is large, and the energy consumption of baking is large. Cathodic electrophoretic coatings need to be baked at 180°C; latex coatings take a long time to dry completely. Organic co-solvents with high boiling point produce a lot of oil fumes during baking, and drop on the surface of the coating film after condensation to affect the appearance.

The difference between water paint and paint

1. Different meanings

Water-based paint: Paint that uses water as a diluent. It has the characteristics of energy saving and environmental protection, non-combustible and non-explosive, ultra-low emission, low-carbon and healthy.

Paint: Paint made of benzene and other organic solvents as diluents to decorate and protect items. Benzene solvents are toxic and carcinogenic, have high VOC emissions, are flammable and explosive, and pollute the environment.

2. Different diluents

Water paint: Use only water as a thinner.

Paint: Paint uses highly toxic, polluting and combustible organic solvents as diluents.

3. Different volatiles

Water paint: mostly the volatilization of water.

Paint: volatilization of organic solvents such as benzene.

4. Different construction requirements

Water paint: There are no special requirements. After simple training, it can be painted. It is very convenient for painting and repairing. Generally, it does not need the assistance of professional labor protection supplies or special fire protection treatment. However, water-based paint dries relatively slowly at room temperature and is greatly affected by temperature and humidity.

Paint: You must go through professional training and practice before you can paint, you must be equipped with professional labor protection supplies, such as gas masks, etc., and fireworks must be prohibited.

5. Different environmental performance

Water paint: low carbon, environmental protection, energy saving, low VOC emissions.

Paint: contains a lot of organic solvents, which are harmful to human health.

6. Other properties are different

Water-based paint: It is a new type of paint, the paint film is soft and thin, the scratch resistance is worse than that of the paint, and the drying time is slow, but the paint film has good flexibility and strong weather resistance.

Paint: The product technology is mature, the paint film is full and hard, the scratch resistance is strong, and the drying time is short.

After reading the knowledge mentioned in this article, I have understood the shortcomings of water-based paints. Water-based paints have relatively high requirements on the cleaning process of the construction process and the surface of the material, because the surface tension of water is large. If it is not cleaned in place Otherwise, the effect will be particularly poor, so we can choose according to its shortcomings, and we also know the difference between water paint and paint.