Is the PU primer for wooden doors the same in winter as in summer?

Dig excellent water-based wood paint (you can paint it yourself).

Wood paint solid color paint can retain obvious concave and convex wood grain, if it is flat, it is covered with wood grain, which can directly cover the original paint, antique paint is translucent, is to retain the original wood grain, and is constructed on the log or white background. The product is the nature of the bottom surface integration, regardless of the primer topcoat, the taste is light and can be used by brushing, no need to cooperate with the closed primer construction, the operation is simple, after stirring evenly, it is painted about 3 times on the clean and dry construction surface, and the interval between each time is more than 3 hours, you can brush the colored wood paint for two days, it is recommended that you paint about 3 times of transparent wood paint, which can make the scratch resistance and waterproofness of the paint surface better: Precautions for wood paint construction:

3 It can be used for 5 days but avoid bumps and scratches, and the paint surface reaches the best hardness in about 7 days.

The primer is mainly used to improve the adhesion of the topcoat, increase the fullness of the topcoat, provide alkali resistance, anti-corrosion function, etc., and at the same time, the primer can ensure the uniform absorption of the topcoat, so that the paint system can play the best effect. According to the coating requirements, the primer can be divided into the first primer, the second primer, etc.

Primer refers to a coating that can be directly applied to the surface of the object as a solid foundation of the topcoat, which is the first layer of the paint system, and some people say that the topcoat can be used without primer, which is incorrect, because the function of the topcoat is different from that of the primer, the topcoat focuses on the final decorative effect, while the primer focuses on improving adhesion, anti-corrosion function, alkali resistance and other effects.

You'd better take a closer look at the smoothness of the door panel before spraying, after all, there is always a moment of mistake.

The temperature of PE primer is low and slow drying in winter, and the addition of PE drier can speed up the drying when making paint. Cat3200 is a specially modified polyester organic compound, which can accelerate the actual drying speed inside the paint film and shorten the grinding time in the unsaturated polyester coating. 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 resins or coatings. Dosage: Generally, the full amount is added later.

Increasing the trimer content of the curing agent, as well as adjusting the diluent to dry faster, can be solved.

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.

Furniture PU primer workers should pay attention to smoking, fire prevention, the primer is oily and can only be prepared with oil-based thinner, and the water-based primer can only be diluted with water-based thinner, and rubber gloves and masks should be worn when using.

A lot of this paint is toxic, this is something to pay attention to, and there is a clean place to protect.

: Intervals until dry. 6 hours in summer and 24 hours in winter. The site is kept clean and free of dust. The temperature is above 5 degrees Celsius.

Is the curing agent not enough?

PU paint is the general name of the dismantled brother Yujiao polyester coating, and its film-forming method is natural film-forming, without special technology.

Polyurethane paint has a two-component chemical structure

The isocyanate group (-NCO) of component A (curing agent) is hydroxyl group (-OH) = polyurethane of component B (lacquer).

Polymer (paint film) diluent (Tianna water): It only plays a dilution role in adjusting the viscosity and facilitating construction.

Composition: main agent, curing agent, diluent.

Primer with PU primer is also available. Spraying directly with topcoat requires multiple sprays and is too costly.

Unlike the primer, the primer mainly fills the voids of the wood, while the topcoat insulates the air, increases the gloss of the surface of the furniture, and protects the wood inside from erosion. In addition, the materials used for primer and topcoat are not the same, vaguely remember that the ratio of curing agent is different, and now it seems that some furniture companies in order to save the process and materials, adjust the proportion of curing agent appropriately with the head, and then omit the primer, spray paint and topcoat, so if you have the time and experience, you can try it.