1. First take a wooden stick to stir the paint in the container. If it shows a uniform state, there is no agglomeration, precipitation, particle flocculation, then the paint has not expired.
2. Brush the paint on a cement asbestos board or glass plate, and wait until the coating is dry to observe any abnormalities such as pores and impurities. At the same time, the sample plate is placed under natural scattered light to observe the color of the coating, and whether the color of the coating is consistent with the standard color plate is judged. If the coating surface is smooth and bright, and the color is uniform and conforms to the standard plate, the appearance and color effect of the coating can be considered to meet the requirements. 1
3. The technical quality requirements of coatings include two points: First, it is proposed to ensure smooth construction, such as coating viscosity, film adhesion, minimum film formation temperature, and drying time. The second is the necessary conditions to ensure the firmness, completeness and durability of the coating, such as hiding power, stain resistance, durability, water resistance, scrub resistance, heat resistance, ignition resistance, and abrasion resistance. These technical performances meet the requirements to ensure that the coating finish resists the effects of various factors during use without cracking, chalking, and fading.
In addition, when purchasing, users should purchase it at a regular sales outlet, because high-end paint packaging is generally one-time, and it is impossible to open the packaging when purchasing, and many properties cannot be visually inspected. Regular sales outlets can guarantee a good after-sales service to ensure that the quality defects of the paint will not cause too much damage to consumers. To buy a brand with higher credibility, quality can be guaranteed.
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