The knowledge of water-based paint has a lot to do, let's see how much you know?

1. What thinner to choose for water-based paint? Reference answer: Water is the best diluent product for diluting water-based paint. When choosing water for diluting water-based paint, it only needs to meet the national drinking water standard. For two-component water-based paint, it is recommended to add the curing agent and stir and mix, and then add water to dilute and stir. 2. What should be paid attention to when diluting water-based paint? Reference answer: When diluting water-based paint with water, the first thing to pay attention to is the PH value of the water, to prevent the addition of acidic water, which will affect the stability of the paint solution in the future, resulting in the pigments and fillers in the paint being easy to settle or difficult to stir. PH value adjustment principle: adopt the principle of dilution in a small amount and many times, and the total amount of dilution should not exceed 10%. 3. What is the amount of water added to the water-based paint varnish? How long is the drying time? How much is the brushing area? Reference answer: The primer is usually added with 30% water, and the topcoat is usually added with 5~15% water. It is usually dry to touch after 10 to 15 minutes, and can be overcoated in 4 to 6 hours. Brushing area: the primer is about 70㎡/pass, and the topcoat is 20-25㎡/twice. Knowledge of water-based paints 4. What is the amount of water added to the water-based paint? How long is the drying time? How much is the painting area? Reference answer: Water-based paint primers and topcoats usually add about 30 to 40% water. Dry to touch after 10 to 15 minutes, and overcoating after 4 to 6 hours. Brushing area: primer and topcoat are about 30㎡/pass, brush 20-25㎡/twice. 5. What is the most important thing to pay attention to when applying water-based paint? Reference answer: First, if a new wool brush is used, it must be immersed in clean water mixed with detergent for more than 2 hours, and then rinsed with clean water; Drying and other surface-drying conditions (≤5 minutes), otherwise, with the surface drying of the paint film, it will cause brush marks and affect the flow of the paint film. 6. What should be paid attention to when spraying water-based paint? Reference answer: First, the model of the nozzle of the spray gun is generally Ф1.5; the second is the air pressure of 6 to 8 Pa; the third is to use a uniform spray wet film-forming method of one gun pressing one gun. Fourth, when spraying large workpieces, the nozzle should be slightly outward, spraying from near to far, and it is strictly forbidden to spray from far to near, otherwise paint mist pollution will easily occur. 7. Why do some water-based paints need to be operated without ventilation? Reference answer: Generally, the product has poor performance and the film forming method is harsh. Once ventilated, the surface will be dried too quickly, and the malignant effect of dry surface and non-drying will easily occur, which will eventually lead to whitening and cracking. 8. What should be paid attention to when using water-based paint when the humidity is high and the temperature is low? Reference answer: When the temperature is lower than 5 °C and the humidity is higher than 85%, the surface of the water-based paint will appear white and the surface will dry slowly. If you are in a hurry for construction, please take measures to heat up and dehumidify, increase heating tools such as infrared light irradiation, and increase the ambient temperature. 9. After the water-based paint is painted, how long should it not be wet? Reference answer: After the water-based paint is painted, it should not be wet for at least 7 days (25°C, humidity of about 50%). If the temperature is low and the humidity is high, the drying time of the paint film must be postponed. 10. What are the storage environment and packaging and transportation requirements for water-based paint? Reference answer: Water-based paints are non-flammable and non-explosive non-dangerous goods, so storage and transportation should not be considered as dangerous goods. Because the system contains water, the packaging materials should consider anti-rust treatment. The recommended storage conditions are 0-35 ℃, cool, dry and ventilated indoor warehouse. The storage period is one year.