Home improvement paint classification and how to choose paint

Modern home decoration, more and more attention to the aesthetic appearance of decorative materials and health and environmental protection, therefore, for the choice of paint, it is even more cautious.

1, the type of paint

According to the different parts of the home decoration coating, paint is mainly divided into several different categories of wall paint, wood paint and metal paint .

Wall paint also includes outer wall paint, inner wall paint and top paint, mainly latex paint and other varieties. Wood lacquer is mainly lacquer, polyurethane paint and so on. Metallic paints mainly refer to paints.

According to different dilution solvents, they can be divided into water paint and oil paint. Latex paint is the main water-based paint, wood paint and metal paint are oil paints.

In the general home improvement process, the parts that need to use the paint are walls, ceilings, doors, windows, etc. Most of the wall painting uses water-based latex paint, while wood and metal parts use oil paint.

2, how to choose paint

After understanding the relevant knowledge, we may wish to learn about the skills of buying paint :

(1) Look at the canning effect of the paint

High-quality paint canning effect will be very good, no water separation, and no starch, no corrosion, no mildew, if it is a real green latex paint, there is no pungent odor or industrial flavor after opening the jar . Then you can look at the water solution of the paint. After the paint has been stored for a period of time, delamination will occur. The paint particles will sink and form a layer of water solution in the upper layer. If the solution is colorless or yellowish during the selection, And it is clear and clean, no floating objects, it shows that the quality of this coating is very good. If the aqueous solution is turbid, and the color of the paint is present, there are many internal floaters, indicating that the paint quality is poor or has passed the shelf life.

In addition, in order to get a satisfactory coating, it depends on the fineness of the paint particles. The method is very simple, just take a small amount of paint in a glass of water, and then stir gently, if the water in the glass is still clear, the paint The granules were independent in clear water, no adhesion phenomenon occurred, and the granule size was relatively uniform, which proved that the quality of the coating was good. If you stir, the water in the cup becomes very turbid, and the particle size is different, which means that the paint quality is very poor. In addition to this method, it is also possible to use a wooden stick to mix the latex paint and then pick it up with a wooden stick. The high-quality latex paint will become fan-shaped when facing downflow. When touched with a finger, it will feel smooth and delicate; while the quality is poor. It will flow down the stick.

(2) The quality coating should not fall off powder

Really high-quality latex paint, the film should not be powder off, there is dust when the water can be scrubbed, so the film should have a certain scrub resistance, for this, the country has a clear rule, qualified products are not Less than 100 times, first-class goods not less than 300 times.

After the high-quality latex paint is wiped, the color of the paint film should be bright as new, and the low-quality latex paint has low resistance to scrubbing, and the coating is also prone to discoloration and breakage.

(3) Pay attention to environmental protection when buying paint

The state has promulgated standards to regulate the limits of harmful substances in paints. Interior wall coatings should meet the requirements of GB18582-2001. Solvent wood coatings should meet the requirements of GB18581-2001. Testing organizations must be approved by the State Bureau of Technical Supervision. CMA test sign. Therefore, when consumers purchase paint, they should pay close attention to whether the product meets the above-mentioned standard inspection report, and check whether the testing organization has the test qualification. On August 1, 2005, the country also implemented mandatory product certifications for nitrocellulose paints, alkyd paints, and polyurethane paints, that is, 3C certification. For products that have obtained compulsory product certification, there should be “CCC” graphic signs on the packaging. With such a sign, it shows that the hazardous substance limit of the product complies with the national mandatory standards, and consumers can use it with confidence.

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