Interior wall latex paint.
With the continuous improvement of living standards and extensive attention to the quality of life, the quality of interior decoration projects has received more and more attention. Interior wall latex paint has gradually become the leading decorative material in interior decoration projects and personal home decoration projects due to its rich color, fast drying, scrub resistance, low toxicity and safety, and convenient construction. Therefore, it is particularly important to accurately identify and rationally select such materials.
What is interior wall latex paint.
On the market, a variety of interior wall latex paint products emerge in an endless stream, such as "anti-mildew latex paint", "formaldehyde-resistant latex paint", "three-in-one", "five-in-one" and so on, which makes people overwhelmed, what is latex paint?
Latex paint is a kind of polymer emulsion as a film-forming material, figuratively speaking, like a cocktail, it is made of different materials, interior wall latex paint is made of four parts: emulsion, pigment filler, additives and water.
01. Emulsion.
Emulsions, i.e. binders or film-forming substances, are mainly synthetic resin emulsions, whose function is to condense and bind pigments and fillers to the wall surface to form a paint film. According to the performance of the emulsion, the emulsion can be divided into silicon acrylic emulsion, pure acrylic emulsion, styrene acrylic emulsion, vinegar acrylic emulsion, vinegar acrylic emulsion and so on. The quality of emulsion directly affects the product quality and performance of interior wall latex paint.
02. Pigment and filler.
Generally, it is iron white powder, calcium carbonate and talcum powder, which is used to give the coating film hiding power and color, increase the thickness of the coating film, and improve the durability and wear resistance of the coating film.
03. Additives.
Additives: rich variety, common such as dispersant, wetting agent, thickener, antifungal agent, etc., its main role is to give or enhance the specific properties of the coating, such as mildew resistance, construction, scrub resistance, etc. Therefore, a variety of latex paints with various properties on the market are actually achieved by adding various functional additives.
How to choose right.
01. Check the test report.
When purchasing, be sure to check the test report, generally speaking, the test report of the sampling inspection is more objective than the one submitted for inspection, and the national testing agency is more authoritative than the local agency. At the same time, check whether the purchased latex paint meets the following national standard requirements.
The standards implemented by interior wall latex paint are:
GB T 9756-2018 "Synthetic Resin Emulsion Interior Wall Coatings", GB 18582-2020 "Limits of Harmful Substances in Building Wall Coatings".
According to GB 18582-2020 "Limits of Harmful Substances in Building Wall Coatings", latex paints that meet green environmental protection standards must meet the following indicators:
02. Check the performance of latex paint.
From the performance of latex paint, two parameters need to be paid attention to: the number of washes and the contrast ratio. In order to improve the washing resistance of latex paint, the formula must be continuously improved, and the content of the emulsion must also be increased. Therefore, to a certain extent, it can also be said that the higher the number of scrubbing resistance, the better the overall quality of latex paint.
According to the requirements of GB T 9756-2018 "Synthetic Resin Emulsion Interior Wall Coating", the number of times of washing and brushing of latex paint is 350 times, 1500 times for first-class products, and 6000 times for excellent products.
The hiding power of latex paint is mainly reflected in the contrast ratio, the higher the contrast ratio, the better the hiding power, and the more economical the paint, the comparison rate of qualified products stipulated in the national standard is 09. The first-class product is 093, 0 for excellent products95。
03. Pay attention to the product packaging mark.
In the process of purchasing and using interior wall latex paint, the first thing to ensure is that the packaging barrel is intact. Next, the appearance and logo are checked in detail, including information such as registered trademarks, product standard numbers, production dates, batches, and product certificates. It should be noted that the normal storage period of interior wall latex paint is one year, and consumers should ensure that the latex paint is within the shelf life when purchasing. Once it is found that there are vertical changes, agglomeration, agglomeration, precipitation and other phenomena after opening, it means that the latex paint has deteriorated and is no longer suitable for continued use.
04. Pay attention to the environment in which the paint is used.
Choose emulsion paint with different functions according to the regional environment, for example, due to the heavy rain in the southern region, you should choose the interior wall emulsion paint with good anti-mildew and anti-algae performance.