The shelf life of paint is about 1-3 years
"Do you look at the shelf life when you pick paint?" At the home of the House of Fame, the reporters asked Ms. Zhou who is choosing paint. Ms. Zhou told reporters that she did not know that the paint also has a shelf life.
In fact, there are not a few consumers who do not know that paint has a shelf life, like Ms. Zhou. Although paint has become one of the most common wall decoration materials, consumers are also familiar with paint products of various brands and functions, but the shelf life of paint is easily overlooked by consumers.
According to Yuan Yu, general manager of Germany Fangfang Paint China, the paint will add some mildew-inhibiting materials during the production process. The amount of these materials added will directly determine the shelf life of the paint. In addition, whether the water used to produce the paint is non-polluting will also affect the length of the paint's shelf life. In general, the shelf life of paint is 1-3 years. Yuan Zhen suggested that consumers should not only look at the effectiveness of the paint when choosing paint, but also pay attention to the date of production and the shelf life of the paint on the outer packaging of the paint to prevent the purchase of products that have expired or will expire.
The use of expired paint will produce film defects
High-quality paint can enhance the taste of the entire home and give the family more abundant meaning. However, the use of coatings that exceed the shelf life may not only affect the decorative effect, but also may lay a hidden danger for future life.
Li Baoyin, Chief Engineer of Ferris Paints, stated that in the coatings that exceed the shelf life, various components may change due to various factors and thus cannot achieve their proper functions and functions, and this deterioration is sometimes irreversible, even if it is kept in an airtight manner. The overall performance and efficacy of the coating can also be affected. According to Yuan Hao, the coating itself is a mixture. If the shelf life is exceeded, there may be delamination, odor, and agglomeration of the coating. The amount of bacteria in the coating will also greatly exceed the normal level. Chen Chunfang, product testing engineer of Guangdong Huarun Coating Co., Ltd., said that if such expired coatings are used, there will be many defects in the paint film, such as the phenomenon that the film adhesion is not strong, easy to fall off, cracking, bubbles, etc., so that the performance of the paint performance And the inherent performance is greatly reduced.
Although experts in the industry do not recommend the use of coatings that exceed the shelf life, Chen Chunfang said that coatings that have exceeded the shelf life of about one month can be tested in a small range without exception. Yuan Zhen also told reporters that if the coating exceeds the shelf-life soon, you can stir it to see if there are obvious overdue phenomena such as stratification, odor, and agglomeration. If not, you can use it as appropriate.
After coating is not easy to save
The decoration will inevitably lead to the phenomenon that the paint is not used up after opening, and many consumers will save these paints for future use only from time to time. In this regard, industry experts have warned that the preservation of paint has skills, if not properly saved, will directly affect the effect of the remaining paint.
In an interview with reporters, Yuan Yu and Li Baoyin both stated that the paint should be used within one month after it was opened, because waterborne paint may be contaminated by dirty water after it has been conditioned, and the roller is picking up mold. Microbial wall construction can also cause rapid deterioration of the paint.
For unopened paints, Chen Chunfang recommends storing in ventilated and cool conditions. Li Baoyin told reporters that the general storage temperature of water-based paint is 0 °C -35 °C, summer preservation of the main concern about the temperature and humidity of the paint, most bacteria reproduce at about 36 °C the fastest, most mold growth at 28 °C or so fastest. In addition, Yuan Zhen also reminded consumers that there is more sunshine in the summer, and the paint must not be exposed to sunlight for a long time. This will also lead to deterioration of the paint.
Reporter's notes: expired paint recycling channels need to be improved
Through interviews, the reporter learned that the expired paint cannot be used, but also knows how to properly store the paint. However, how to deal with it? When a reporter asked about this issue, two industry experts said that the chemical substances contained in the paint would cause environmental pollution, so they cannot be thrown away directly.
Can not be thrown away directly, can not continue to use, then how should we treat expired paint? Yuan Hao told reporters that paint manufacturers will also have the problem of overdue product backlog. For large quantities of expired paints, they will send them to chemical recycling companies for disposal. However, there is currently no recycling for ordinary consumers on the market. way.
When paint companies advertise their products, they will be marked with the words "green" and "environmental protection" to attract consumers' attention. Then, at the same time as the production of green paints and green paints, can paint companies continue to move forward with the issue of expired paint recycling?
We look forward to the day when, like a recycling box with the words “Discarded Battery Recycling†written at the entrance of the mall, an “outdated paint recycling bin†will appear outside the paint supermarket.
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