-
Categories
-
Pharmaceutical Intermediates
-
Active Pharmaceutical Ingredients
-
Food Additives
- Industrial Coatings
- Agrochemicals
- Dyes and Pigments
- Surfactant
- Flavors and Fragrances
- Chemical Reagents
- Catalyst and Auxiliary
- Natural Products
- Inorganic Chemistry
-
Organic Chemistry
-
Biochemical Engineering
- Analytical Chemistry
- Cosmetic Ingredient
-
Pharmaceutical Intermediates
Promotion
ECHEMI Mall
Wholesale
Weekly Price
Exhibition
News
-
Trade Service
China Coatings Network
: At present, China's
coatings
testing standards are: synthetic emulsion
exterior paint
-GB/T9755-1995
synthetic emulsion
inner wall coating
-GB/T9756-1995; GB/T18582-2001
For the outer wall
building coating
, people are more concerned about the aging resistance of the coating, because the outer wall paint exposed to the atmosphere, subject to severe environmental testing, the need for good aging resistance, the national standard detection using xenon lamp artificial accelerated aging method detection. This method simulates the loss of paint due to changes in the weather environment, the current standard is: 200 hours of qualified products; For the interior wall building paint, people are most concerned about the paint wash resistance, the national standard is also the use of artificial accelerated testing methods, the current requirements of China's national standard is more than 300 times.
addition, the detection indicators include the status in the container, construction, coating appearance, drying time, alkaline resistance, freeze-resistant melting, and coating temperature resistance and crack-resistant elongation.
should say that the domestic testing standards are very low, much lower than the standards of developed countries abroad, such as: anti-aging in foreign countries generally require more than 500 hours.
GB 18582-2001 (inner wall coating hazardous substances limit)
1, the volatile organic matter (VOC) content in the product should be less than 200g/L;
2, product production process, not artificially add compounds containing heavy metals, the total content should be less than 90 mg/kg (in lead);
3, the production process should not artificially add formaldehyde and its formaldehyde polymer, the content should be less than 100mg/kg.