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Quality standards of interior wall latex paint

  • Categories:Industry News
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  • Time of issue:2016-10-26
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Quality standards of interior wall latex paint

(Summary description)Now the decoration is inseparable from the interior wall latex paint. Everyone knows that paint is one of the sources of formaldehyde in the home, so many owners are concerned about the quality standard of interior wall latex paint. Let’s take a look at the following: 1. Free formaldehyde Free in interior wall paint Formaldehyde is mainly derived from additives such as synthetic resin emulsions and mildew inhibitors, which can ensure the chemical stability of the paint during production and transportation and extend the storage time of the paint.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2016-10-26
  • Views:0
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Now the decoration is inseparable from the interior wall latex paint. Everyone knows that paint is one of the sources of formaldehyde in the home, so many owners care about the quality standards of interior wall latex paint. Let's understand below:

1. Free formaldehyde

​​​​​The free formaldehyde in interior wall coatings mainly comes from synthetic resin emulsions and mildewproofing agents. It can ensure the chemical stability of the coatings during production and transportation and extend the storage time of the coatings. However, free formaldehyde will form into the environment as the paint dries and releases into the environment. If this index exceeds the standard, it will easily cause indoor air pollution. At high concentrations, it may cause nausea, vomiting, cough, chest tightness, asthma, and emphysema. , Or even cause death, the free formaldehyde content of qualified paint is ≤0.1g/kg.
2. Volatile Organic Compounds (VOC)
The content of total volatile organic compounds in interior wall coatings should only affect human health and indoor environment pollution during the production, construction and use of the coating. The national implementation standard for this item is ≤200g/L
3. Freeze-thaw resistance
Determination of freeze-thaw resistance of latex paint in 2008 "Determination of freeze-thaw resistance of latex paint" 244KB
4. Washing resistance
Scrub resistance is one of the important technical indicators of interior wall coatings. Household life is more likely to stain the walls. Good coatings can be wiped with water at any time without being wiped off. The national standard stipulates that the scrub resistance qualified product: ≥ 200 times; the first-class product: ≥ 500 times; the excellent product ≥ 1000 times.
5. Contrast ratioThe contrast ratio is a test item set for white and light-colored paints. It can reflect the ability of white and light-colored paints to eliminate the color or color difference on the substrate, and can also indirectly reflect the amount of paint used to cover the same area of the substrate. . The lower the contrast ratio of the paint, the worse the ability of the product to cover the substrate, the worse the coating effect, and the greater the amount of paint per unit area. The quality standard of interior wall latex paint is related to the quality of our home decoration environment, so we must pay attention to understand the quality of latex paint when choosing interior wall latex paint.

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