Home building materials set off "environmental wind" The paint market is intriguing

2018-11-18 10:34:04

　　Phenomenon 1: The barrel paint is "clean"

　　In recent years, as consumers pay more and more attention to the environmental protection of home building materials, the coatings market has also set off an “environmental protection wind”. Many merchants are rushing to launch “net odor” coatings, and “clean” the products they sell. ", "Green" words.

　　expert's point

　　Song Guangsheng, director of the National Indoor Environment and Indoor Environmental Product Quality Supervision and Inspection Center, said in an interview that at present, the country has not yet established a unified standard for paint odor, and there is no special standard and requirement for "net taste". "Net taste" is only a manufacturer. Proposed sales concept. "Net odor" coatings are primarily functional, functional coatings that purify odors and toxicities in the air, which are virtually non-toxic. However, the "net taste" coatings produced by many small manufacturers do not have the net taste function, but the smell is small. At present, most of the products on the market belong to the two kinds of pure taste principles of “emulsion technology directly eliminates odor” and “fragrance covers emulsion odor”. The former is a true net taste technology, and the latter is a pseudo-clean taste technology. When consumers buy paint, they can open the product on site to test it. The good clean taste product should have no irritating taste. If there is obvious irritating smell or other fragrance, it may be added flavor or The “pseudo-net taste” products of harmful substances also cause harm to the human body and the environment.

　　Phenomenon 2: I don't know what VOC is.

　　Recently, the industry has continuously exposed the excess formaldehyde in coatings. First, in August, the Beijing Municipal Administration of Industry and Commerce released the quality monitoring results of interior decoration materials, and some of the latex paint free formaldehyde projects failed. Subsequently, the Guangdong Provincial Quality Supervision Bureau also released the results of quality supervision and inspection of internal and external wall coating products, and 13 batches of products were unqualified, mainly due to excessive formaldehyde. What is free formaldehyde? What harm does it have? The free formaldehyde index of the coating product is directly related to the VOC content of the coating. VOC is the abbreviation of volatile organic compounds, and its value refers to the content of volatile organic compounds such as formaldehyde and benzene per liter of paint. The lower the VOC content, the more environmentally friendly the coating. If the VOC content of the coating product is too high, the free formaldehyde produced will also exceed the standard, causing indoor air pollution. If consumers are in this environment for a long time, it is easy to cause chronic respiratory diseases.

　　expert's point

　　Ren Changqing, secretary general of the China Building Decoration Materials Association, said that the harm caused by VOC to people is slow and not easy to be detected in the short term. However, when the VOC reaches a certain concentration, people may have symptoms such as headache, nausea, and weakness of the limbs. In severe cases, they may cause convulsions and coma. Therefore, consumers must pay attention to the VOC content of the paint when purchasing. The national mandatory standards stipulate that the VOC content of interior latex paint should not exceed 200 g / liter. However, for some brand sales personnel claiming that “the VOC content of the product is close to zero”, Ren Changqing suggested that when the VOC content in the paint is less than 1 gram or tends to zero, it is internationally known as “zero VOC”. Therefore, if the merchant claims that the VOC content of his product is lower than the national standard, it should be supported by the test report of the authoritative organization. Otherwise, this statement is not credible.

　　Phenomenon 3: Water-based paint is not good

　　It is well known that some volatile impurities contained in paints have a volatilization time of up to 10 years. In contrast, water-based coatings are environmentally friendly, odorless, non-flammable, non-explosive, etc., and are low volatile organic content coatings. However, according to industry insiders, there are not many companies that have water-based paint production lines on the market. Some companies have switched back to selling traditional oil-based paints after selling them for several years.

　　In addition, the price of water-based paint products is about 500 yuan higher than the price of traditional oil-based paint products. Due to the high price of waterborne coatings, most consumers lack sufficient knowledge and understanding of such products, and can only be discouraged. Therefore, many people do not know what is water-based paint, worry about its environmental protection, and the price is quite expensive, they still prefer traditional oil-based paint.

　　expert's point

　　Sun Lianying, chairman of the China Coatings Industry Association, said that traditional coatings have long been one of the important sources of home improvement. At present, most of the coatings on the market in China still use organic solvents as solvents and diluents. Organic solvents are extremely harmful to the environment and people's health. In contrast, water-based paints can replace water with organic solvents and can be diluted directly with water. Construction tools can also be washed with water, reducing environmental pollution.

　　At present, there are many water-based paint products on the market, but due to consumer consumption habits and price factors for a long time, whether it is production or sales, oil paints in China have always occupied an absolute strong position. Although in recent years, as consumers pay more attention to environmental protection, water-based coatings have been accepted and recognized by more high-end consumer groups, but for the larger low-to-medium consumer market, it is still the world of oil-based coatings. At present, the coating effect of most domestic waterborne coating products can not fully reach the same level as oily coatings, and the coating process of waterborne coatings is greatly affected by climate and environment, and the construction period is long. Therefore, waterborne coatings are still very It is difficult to really occupy the market. If the upgrade of product quality is not achieved, water-based paint is difficult to be widely accepted in the domestic market.