How to solve the difficulty of grinding the paint when the paint dries slowly in winter?

If the indoor ventilation is not good or the temperature is too low, the paint will dry slowly. At this point, you can open all doors and windows to promote ventilation, or put a heater in the room to increase the room temperature. If the problem persists, it may be that the painted surface is greasy.

At this time, the paint can be removed with a chemical paint remover or heat, and the surface can be thoroughly wiped clean before re-painting.

The dosage of PE paint drier Dowsen CAT-3200 is only used to accelerate the actual drying speed inside the paint film and shorten the grinding time in unsaturated polyester coatings. It does not affect the weather resistance, is not easy to yellow, and has good recoatability. An ideal alternative to fast-drying resins.

Physical Properties: Appearance: Yellow Liquid Color: MAX400APHA Active Ingredients: 100% Composition: Special polyester copolymer.

Functions: 1. Special structure, obvious catalytic effect.

2. Accelerate the practical effect in the paint film.

3. Improve hardness and grindability.

4. It has good storage stability.

Scope of application: Unsaturated polyester resin or coating.

PE primer is slow drying, you can use fast-drying resin to achieve the effect of fast drying, but the cost is high and troublesome, simple and effective method: add polyester modified PE drier in the paint to speed up the drying. CAT3200 is an environmentally friendly reactive curing accelerator that can accelerate the actual drying speed inside the paint film and shorten the grinding time in unsaturated polyester coatings.

It does not affect the weather resistance and has good recoatability. Functions: 1. Special structure, obvious catalytic effect.

2. Accelerate the practical effect in the paint film. 3. Improve hardness and grindability. 4. It has good storage stability.

Scope of application: Unsaturated polyester resin or coating. Dosage:

Generally, for the full amount, it is added later. Search for new materials.

1. Abnormal ambient temperature and humidity: the indoor temperature is too low, the humidity is too high, and the dry conditions cannot be reached. Workaround:

Indoor sun lamps to raise the temperature of the room; Or use an electric hair dryer to blow hot air on the place where the paint has not dried; You can also put a basin of carbon in the room, and with enough heat in the room, the paint will dry easily. If the humidity is too low, you can put some moisture-absorbing objects indoors to absorb moisture from the air.

2. The indoor air does not collapse to accompany the communication: the air is not circulated, and there is no fresh air coming in, which makes it difficult for the paint to dry. Solution: Open the doors and windows of the room to let the outside air in, stir up the dull air in the room, and speed up the drying of the paint.

3. The paint thinner is unqualified: the water content of the thinner is too high, or the alcohol content is high, and the paint cannot be dried quickly. Solution: Replace the thinner with a quick-drying thinner to speed up the drying of the paint, or reduce the thickness of the paint film.

Winter painting, 1, the relative humidity can not be lower than 85%, you check your local weather forecast online, there is a report of relative humidity (every hour), this is very important, remember!

2. The outdoor temperature is controlled above 7. The construction time is between 10 o'clock and 3 o'clock in the afternoon, and the temperature can be extended to 4 o'clock.

3. The film thickness of each paint construction should not be too thick. After the surface is dry, apply the second degree of paint (press with the general force of your hand without leaving fingerprints).

4. Pay attention to ventilation during construction, and close the doors and windows when the temperature drops at night, or when the relative humidity is greater than 85%. Pay attention to opening windows in the morning.