Analysis of the main points of buying paint

Painting and finishing are the last process in the home decoration process, and also the most "effect" of the renovation project. Generally can be divided into two categories: coatings for wall coverings, ceilings, such as latex paint; coatings for wood products, that is, paints, such as varnish. In the home decoration, the commonly used wood coatings are divided into functional primers and topcoats; according to the parts of use, there are furniture paints, floor paints and other methods.

At present, the paints commonly used in home decoration mainly include: nitrocellulose lacquer (NC), polyurethane lacquer (PE), polyester lacquer (PU) and the like. Among them, nitrocellulose lacquer has always been the main material for the production of high-grade furniture in China. Now, polyester lacquer has gradually occupied a large market with its superior performance and technology. Common brands include crocodile, bauhinia, Dabao, Nippon, and four season flowers. As for the "crystal paint" and "all-round paint" sold in the market, most of them will not be in the range of polyurethane and polyester paint. There are also "high gloss paints" and "matte paints", which do not involve too much intrinsic properties or performance problems, but the latter adds a certain amount of matting agent to the formulation.

Pay attention to the following points when purchasing paint:

There are many kinds of paints and different performances. The quality is excellent, depending on its protection, decoration, craftsmanship and economy, environmental protection and other aspects, in order to facilitate construction and quality assurance, please refer to the instructions when purchasing. Quality indicators on the.

Protective: The paint film is required to have a certain mechanical strength, necessary heat resistance, water resistance and durability, and is resistant to the corrosive and cold resistance of chemicals. At the same time, it must be flexible enough to withstand the deformation caused by the change in moisture content of the wood. Please refer to the quality indicators on the manual when purchasing.

Decorative: The film is required to be full and thick, smooth and smooth with strong light or matt. For clear paints, it is required to clearly show the texture of the wood. For opaque paints, aesthetics are required and can last for a long time.

Processability: It requires convenient construction and fast drying.

Economical: Low cost and low price. However, do not use paint that exceeds the shelf life because it is cheap. The storage period of the paint is generally one year (calculated from the date of production).

Environmental protection: Environmental protection factors have received more and more attention from people. Currently, the paints sold on the market contain more or less free isocyanate and xylene, which are harmful to human body. From the perspective of the long-term effects on the human body, of course, the varieties with lower contents are preferred.

Pay attention to the products of the regular manufacturer, and have a quality guarantee, see the batch number and date of the production, and confirm that it is a qualified product before purchase.

Make an estimate of the amount to be used, and purchase it at a time to avoid a slight color difference in the paints that have been purchased. At present, the paints on the market are marked with a three-degree area (ie, a barrel or a group of areas that can be coated three times), and some give an area that can be coated once per liter, etc. Generally, a single group The wood paint (such as floor paint, etc.) is divided into a gallon bucket of about 12 square meters. It is best to use the same brand or matching paint for the primer and topcoat to prevent chemical reaction between the primer and the topcoat. When purchasing, carefully read the type (or finish) of the primer (or finish) specified in the package instructions.

Open the paint bucket cover for inspection. If the texture of the paint is more delicate, the effect will be better after painting, and vice versa. Look at the phenomenon of whether the paint has delamination and agglomeration. If it is, it indicates that the quality of the paint is poor.