The hottest Suzhou carried out supervision and spo

2022-10-22
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Suzhou carried out supervision and spot check to purchase 25 batches of interior wall paint 100% qualified

Suzhou carried out supervision and spot check to purchase 25 batches of interior wall paint 100% qualified

March 8, 2016

[China paint information] recently, Suzhou Municipal Bureau of quality supervision carried out supervision and spot check on the quality of interior wall paint, and 48 batches of samples in 50 batches were qualified, with a pass rate of 96%. Among the 25 batches of samples from physical stores, 23 batches were qualified, with a pass rate of 92%; The qualified rate of 25 batches of samples from e-commerce platforms was 100%

this time, the quality supervision department tested the volatile organic compound (VOC), the sum of benzene, toluene, ethylbenzene, xylene, free formaldehyde, soluble heavy metals (lead, cadmium, chromium, mercury), low temperature stability, contrast rate, alkali resistance, washability, etc. one by one. The main problems are the unqualified contrast rate and washability items

in this spot check, two batches of samples failed to meet the requirements of qualified products in terms of contrast rate. This situation facilitates the batch experiment; On the one hand, the reason is that the manufacturer chooses the raw materials titanium dioxide and lotion improperly or the formula design is unreasonable; On the other hand, in order to reduce costs, some enterprises have used cheap fillers such as light calcium, talc and lithopone to replace titanium dioxide pigments

one batch of interior wall coating checked according to the limit load of the test piece before the experiment revealed the bottom after only scrubbing 52 times, which was far from meeting the requirements of qualified products. The main reason for the unqualified washability is that the lotion is improperly selected or not prepared according to the specified proportion

in addition, the quality supervision department also conducted risk monitoring on the total content of ethylene glycol ether and ether ester and the resistance to artificial climate aging of all samples. The results showed that the total content of ethylene glycol ether and ether ester was not detected, and the resistance to artificial climate aging was free of blistering, peeling and cracking

relevant links

identify these points when purchasing paint

consumers should first understand some basic knowledge of paint before purchasing interior wall paint, so as to ask the dealer about product performance when purchasing

according to insiders, the contrast ratio is a test item set for white and light colored paint. It can reflect the ability of white and light colored paint to eliminate the color or color difference on the substrate, and can also indirectly reflect the amount of paint used to cover the substrate in the same area. The higher the contrast ratio, the stronger the ability to cover the substrate, and the less the amount of paint used

washability refers to the ability of the paint film to be repeatedly scrubbed with detergent without damage under the specified conditions. It is an important performance index of the paint. Unqualified washability items will greatly reduce the service life of the product,

affect the use effect. According to the requirements of the national standard "synthetic resin lotion interior wall coating" for the washing resistance index of relevant products, the requirements for superior products are not less than 5000 times, the requirements for first-class products are not less than 1000 times, and the requirements for qualified products are not less than 300 times

the greater the elasticity of the coating, the less likely it is to crack after brushing

high SCRUBBABILITY indicates that the paint film has high density and good effect, and it is easier to clean if there are stains

the stronger the covering ability of the coating, the better the covering of the base stains

if there are special mold proof requirements, you can choose mold proof paint

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