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    Home > Coatings News > Paints and Coatings Market > Coating standard: new formaldehyde emission standard will be issued soon, and E2 standard in the original standard will be eliminated

    Coating standard: new formaldehyde emission standard will be issued soon, and E2 standard in the original standard will be eliminated

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: it is understood that the national standard committee will make a revision recently This time, it is mainly aimed at the mandatory national standard GB18580-2001 indoor decoration materials, wood-based panels and their products formaldehyde emission limit The E2 standard in the original standard will be removed The formaldehyde emission limits of wood-based panel and its products in China are divided into two grades: E2 ≤ 5.0mg/l, E1 ≤ 1.5mg/l The more stringent E0 grade (< 0.5mg / L) appears as the recommended standard in plywood (GB / t9846 Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Paint Home News: it is understood that the national standard committee will make a revision recently This time, it is mainly aimed at the mandatory national standard GB18580-2001 indoor decoration materials, wood-based panels and products formaldehyde emission limit The E2 standard in the original standard will be removed The formaldehyde emission limits of wood-based panel and its products in China are divided into two grades: E2 ≤ 5.0mg/l, E1 ≤ 1.5mg/l However, the more stringent E0 grade (< 0.5mg / L) appears in plywood (GB / t9846.1 ~ 9846.8) as a recommended standard, which is not mandatory Compared with the difference of one order of magnitude between E0 and E1, the difference of 3.5 orders of magnitude between E2 and E1 The large difference between grades is one of the reasons why the standards are not scientific According to the introduction, domestic plate industry enterprises are pursuing "zero formaldehyde" technology at present, the formaldehyde emission is very small or ignored, Europe, Japan and other countries are also developing in this regard, especially large brand enterprises pay more attention to environmental protection indicators related to health "E2 grade boards are actually more suitable for outdoor and packaging applications, and it's reasonable to remove them," said Mr Li, the relevant director of a well-known flooring manufacturer "In fact, the removal of this grade requires more stringent formaldehyde emission from the boards." The industry is on the verge of upgrading The industry believes that if the newly revised formaldehyde emission limit standard is issued, it will have an impact on the enterprises that produce flooring and floor adhesives The adhesives that previously meet the E2 standard are forbidden to be used, increasing the production cost of some enterprises However, the formaldehyde emission limit requirements are more and more strict, which is the general trend of the industry development At present, the whole floor industry has performed well in this respect, and most of the enterprise production standards have already reached E1, or even E0 levels As for when the new national standard will be revised, no more information has been obtained Formaldehyde harm mainly comes from wood floor and furniture base material, and adhesive is the key to formaldehyde emission Urea formaldehyde adhesive with low price and poor quality will volatilize more formaldehyde, especially board furniture, low-density board is more terrible Small workshop is the disaster area of unqualified adhesive application Experts pointed out that the wood materials of household building materials contain formaldehyde, "zero formaldehyde" is only the concept of sales promotion, in fact, there is no absolute "zero formaldehyde" products In fact, the main cause of high formaldehyde content is adhesives The cost of using poor adhesives is low, but the harm is great Some domestic furniture and floor manufacturers usually use urea formaldehyde adhesive It is one of the main ways to reduce the formaldehyde emission of wood-based panel by improving the ratio and synthesis process of urea formaldehyde glue At the same time, the research and development of new non aldehydes adhesives has also become the focus of forestry research In recent years, non aldehydes thermoplastic resin adhesives have some advantages This kind of adhesive does not contain formaldehyde component, and has no free formaldehyde release in the process of production and use It is safe, environmental friendly, simple and cost-effective At the same time, the thermoplastic resin as a bonding material can isolate the water flow between slabs, which has good water resistance and high stability As the public pay more and more attention to the formaldehyde content of furniture, manufacturers are trying to produce low formaldehyde products, which is the general trend of the industry Low formaldehyde is not a technical problem many times, but a cost problem in the final analysis They are willing to buy better adhesives Relevant people think that the elimination of E2 level standard will accelerate the industry upgrading process Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,
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