Three major mistakes in the purchase of paints and coatings
Three major mistakes in the purchase of paints and coatings: Paint can also be drunk? From 0voc to the current low-carbon environmental protection, from scrubbing to covering cracks, there is an endless stream of high-environment, high-performance propaganda. According to experts, when purchasing, consumers are more or less affected by these propaganda, and even entered the misunderstanding of “the more environmentally friendly, the better the function is, the better.†Here are three misunderstandings, Xiaobian will take you to see it! Myth 1: Zero VOC is the best As with other building materials, the environmental friendliness of coatings has become the focus of businesses and consumers. The VOC of a coating refers to the total amount of organic compounds contained in the coating, and these organic compounds are the main components of the main film-forming material that constitutes the coating. The role of the main film-forming material is to enhance the viscosity of the coating, which is what the saying goes to play the wall. If the content of VOC is lowered, it is likely to cause a decrease in the viscosity of the coating, which may result in powder falling, foaming, cracking, and low scrub resistance. If the quality of the coating is not considered, simply reducing the VOC content is simple. For example, adding more water to the coating can reduce the VOC content. Therefore, some small paint manufacturers can make VOC very low, but the quality is not guaranteed. As a product that directly enters the home, paint has a mandatory national standard. The qualified products sold in the market have already reached this standard, and are environmentally friendly and harmless to the human body. Therefore, consumers do not have to keep an eye on the “environmental protection†and VOC content when purchasing paints. As long as they are qualified products that meet the national standards, they can be purchased with confidence. Misunderstanding 2: Pursue self-cleaning function and scrub resistance At present, many painters use the product's self-cleaning function and thousands of times of scrubbing as a promotional point. The self-cleaning statement is applied to exterior wall paints, which refers to the stain resistance of paints, which is also known as the dirt resistance. Specifically, the paint is not easily stained with ash after being treated, and the ash that has been stained on the surface can be washed away by the scouring of the rainwater, thereby achieving a clean effect. Although some merchants have injected self-cleaning functions into interior wall paints, in practice most interior wall cleaning is still done by manual scrubbing. The national standard stipulates that the number of scrubs of qualified paints is not less than 300 times, and some paints promote the number of scrubs up to 10,000 times. This is a good thing, indicating that these paints have good scrub resistance, but the cost should be increased accordingly. As a consumer, rubbing the wall once a day, only 3560 times in 10 years. Therefore, consumers should not excessively pursue self-cleaning function and scrub resistance when purchasing interior wall paint. Misunderstanding 3: It is the crack-proof coating that can cover the crack. Many consumers believe that coatings that cover cracks are crack-proof coatings. In fact, the function of crack prevention and coating to cover fine cracks is two different things. It is not that the wall is cracked and the paint will not crack. There are indeed elastic coatings with thick paint films on the market, but such coatings are mostly used for exterior walls, which are basically difficult to use in indoor walls and are expensive. There are no specific requirements for the elasticity of paint in national standards. In some coastal areas, due to the sinking of the foundation every year, the wall surface is prone to cracking. This elastic coating is widely used. However, as an ordinary consumer, it is not necessary to use a high-cost elastic paint in the home decoration. Experts suggest that when consumers buy paint, they may wish to look at the paint report and make a comprehensive analysis of other aspects of the paint. For example, the alkali resistance of the paint: the alkali resistance of the paint. If the alkali resistance of the paint is not strong, it is easy to yellow after a period of time. After making a comprehensive analysis, choose the products you really need. 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