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    Home > Coatings News > Paints and Coatings Market > The China Coatings Association has called for the suspension of "anti-formaldehyde" for publicity

    The China Coatings Association has called for the suspension of "anti-formaldehyde" for publicity

    • Last Update: 2021-01-26
    • Source: Internet
    • Author: User
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    China Coatings Network
    News:
    Recently, China
    Coatings
    Industry Association on the market for some brand paint sampling, to analyze the paint industry and consumers in recent years are very important to the construction
    intra-wall coatings
    of the "anti-formaldehyde" or "net aldehyde" function, is it true or just a gimmick?
    that the sampling test of the Chinese Tu Association mainly extracted the market popular, price-equivalent products. In the ordinary retail way from Beijing's ten-lihe building materials city, actually home and other formal distribution sites, through the formal channels to buy 8 kinds of labeled with "anti-formaldehyde" function of the paint samples, and then divided into a unified packaging and numbering (each product number is only clear, China Coatings Industry Association commissioned the National Building Materials Quality Supervision and Inspection Center for testing. According to the national standards involved in interior wall coating GB/T9756-2009 "synthetic resin emulsion interior wall coating", GB18582-2008 "interior decoration materials - interior wall coating in the limit of harmful substances" and JC/T1074-2008 "indoor air purification function coating material purification performance" and other testing.
    From the sampling comparison results can be seen, in the internal wall
    built coatings
    basic performance data of the physical performance indicators, the current market in Beijing sales of inner wall coating products in the high-grade products have a good ratio, the sampling product test results are in line with the requirements of first-class or superior products. Inner wall paint scrub resistance is a reflection of the film anti-scrubbing ability, this 8 samples are all excellent products, that is, 5000 times not exposed. On the other hand, it also shows the importance that manufacturers and consumers attach to these two performance.
    for the public concerned about formaldehyde purification performance as an auxiliary performance of coatings on the consumer decoration in the end how much impact, consumers on the building materials industry standard JC/T1074-2008 indicator meaning is clear? Relevant industry experts analysis said that consumers of the building interior wall coating formaldehyde purification performance is questionable.
    From the coating itself, the amount of thin coating film thickness adsorption or degradation of formaldehyde is limited (the building interior wall coating after coating into a film, the general thickness is only 30 to 100 microns). While the solid state of the coating film, the internal formaldehyde purification aid can not be migrated to the surface to play a role, only the coating surface formaldehyde purification aid can be in contact with formaldehyde and play a role.
    , the formaldehyde purification performance of coatings has yet to be strengthened in terms of time persistence. Formaldehyde purification aids on the surface of the film to be applied are doomed to gradually weaken their purification properties after failure due to multiple adsorption or degradation of formaldehyde, and no new additives are expected to supplement them. Building materials industry standard JC/T1074-2008 although also considered the durability of formaldehyde purification performance, but its persistence consideration of the time is only set for 4 days, a longer period of formaldehyde purification performance to be further demonstrated. Especially after home wear, consumers will generally choose to use 1 to 2 months to open the window ventilation after the official check-in, its critical period of formaldehyde hazards are generally concentrated in the second half of the stay period.
    in terms of environmental impact on the bedroom, formaldehyde purification performance indicators will tell us some hidden secrets. All samples sampled in this sample, this indicator is generally 90%, that is, there are still 10% formaldehyde residue, its residue is generally about 0.23mg/m3. According to the national "indoor air quality standards" GB/T18883-2002, indoor formaldehyde concentration should not exceed 0.1mg/m3, that is, after coating purification of the space formaldehyde concentration is still more than double the national standard, and this single-view final percentage is unknown. Experts say the residual value would be greater if formaldehyde decayed less naturally during testing. Theoretically, the higher the formaldehyde concentration, the more prominent the purification effect. When the indoor formaldehyde concentration is reduced, the probability of contact between the wall coating and the formaldehyde molecules in the air will be reduced accordingly, and the purification performance of formaldehyde will be reduced. However, the term "low" here is relative, and exceeding national standards is bound to cause harm to the human body.
    association said formaldehyde as an auxiliary function of the building's interior wall coating, was advertised as the main selling point is not appropriate. In formaldehyde purification performance on indoor air before the actual role of scientific and careful demonstration, the Chinese coating association called on all relevant enterprises in the internal wall paint products to promote, temporarily no longer "anti-formaldehyde" as a selling point for publicity, and called on the vast number of consumers not to use such publicity as a reference for the choice and purchase of paint. Coating industry two common standards GB18582-2008 and HJ/T201-2005, the interior wall paint VOC, benzene, xylene, formaldehyde, lead, mercury, etc. have been strictly limited, paint harmful substances are lower than the national standard limit, is the most important basis for determining whether this coating product environmental protection or not.
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