Paint common sense: wall paint can remove formaldehyde

Core tip: when "haze" is no longer a new word, and people can only "cover their mouths" when they go out, more and more urban people begin to pay more attention to the harm of air pollution to their health Therefore, the air quality in the home environment, especially the residual problem of harmful substances such as benzene and formaldehyde, has been paid more and more attention! The topic "wall paint can remove formaldehyde" has become the focus of different opinions Today we are going to the Chinese society of Environmental Sciences Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Paint Home News: when "haze" is no longer a new word, and when people go out, they can only "cover their mouths", more and more urban people begin to pay more attention to the harm of air pollution to health Therefore, the air quality in the home environment, especially the residual problem of harmful substances such as benzene and formaldehyde, has been paid more and more attention! The topic "wall paint can remove formaldehyde" has become the focus of different opinions Today, we are going to invite Dr Li Jingguang, executive member of China Society of Environmental Sciences, indoor environment and health branch and professor level senior engineer, to answer "formaldehyde" Q: Dr Li, in order to effectively reduce the formaldehyde concentration in the home environment, what should be paid attention to in the decoration process? A: In the early stage of decoration, it is very important to choose building materials such as board, furniture and coating reasonably, so as to effectively prevent pollution from the source of pollution Secondly, in the process of decoration, we should take effective ventilation means to keep the air smooth all the time If conditions permit, such as purifier, filter, purification materials, etc can be used as the choice of domestic air purification Q: What method or instrument can be used to detect the formaldehyde concentration in the air scientifically and effectively? Does the state have such standards? A: In fact, China has a long time for the detection of formaldehyde concentration in the air of standard methods The most common method is to use spectrophotometer to analyze formaldehyde, such as phenol reagent method, acetylacetone method, etc Many domestic testing institutions can carry out relevant testing, but the quality of testing varies, so I suggest that if there is such a demand for formaldehyde testing, an authoritative testing institution such as "national construction engineering material quality supervision and inspection center" can be entrusted for testing Q: General market sales of paint coatings mentioned in the purification of formaldehyde function, whether it can really do? What are the principles through which they are achieved? What method can be adopted? A: some wall paints on the market do have the function of purifying formaldehyde, but their purification ability is different There are two main removal principles, one is the physical adsorption of formaldehyde, such as the use of activated carbon products to clean air; the other is the chemical reaction principle, that is, the use of a functional material to react with formaldehyde to generate other harmless substances Q: Nowadays, there are many methods to test the formaldehyde removal ability of coatings on the market Are these methods scientific and accurate? A: At present, there are many methods to test the formaldehyde removal ability of coatings in the market Whether the test results are reliable and accurate needs to be compared with the national standard methods and instruments before it is clear whether it is feasible The test environment usually needs to be considered in comparison, including formaldehyde concentration, temperature, humidity and other factors such as chemical interference In fact, for the test method of formaldehyde removal ability of coating products, relevant experts of China Academy of building materials and other units have formulated relevant standards as early as 2008, namely, indoor air purification function coating material purification performance JC / t1074-2008 Most coating enterprises refer to this standard to require the related performance of formaldehyde removal coating products Q: Is it correct that absorbing formaldehyde is equivalent to degrading formaldehyde? Some paint coatings absorb formaldehyde in a short period of time, whether it also shows that the function of formaldehyde removal is better? A: "Absorption" refers to the transfer of formaldehyde from the air to the adsorbed substance, and the formaldehyde content has not changed in essence; while "degradation" refers to breaking the chemical bond of formaldehyde to generate other substances There are many factors that affect the adsorption capacity of coatings, such as the density of paint film, so some high-end coating products are not as fast as the relatively low-end products in terms of absorption speed because of their very dense paint film If the coating product only plays the role of adsorbing formaldehyde in the air in a short period of time, it can not be said that its formaldehyde removal function is better Therefore, whether the coating products can really play a role in removing formaldehyde depends not only on the purification efficiency, but also on the purification life 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,