The Study And Control Of Decoration Materials On The Indoor Air Formaldehyde Pollution

This paper aims to release the study and test of formaldehyde pollution in decoration materials caused by indoor air formaldehyde pollution and the main source of indoor air formaldehyde wood-based panel.Rough housing and hardcover room formaldehyde in indoor air testing by phenol reagent spectrophotometry, combined with the interior condition analysis, concluded as follows:①The rough housing indoor use of building materials is not caused by indoor air pollution sources of formaldehyde pollution;②Indoor formaldehyde pollution and indoor decoration degree, the higher the concentration of renovation the more complex formaldehyde, usually indoor formaldehyde concentration hardcover room> Cube room>rough housing;③Completion of the renovation time the longer the indoor formaldehyde concentration is low, usually less than three months after the completion of the renovation formaldehyde in indoor air pass rate lower;④The decoration density affect indoor formaldehyde pollution, decoration materials, the higher the greater the amount of formaldehyde concentration in the indoor unit space volume, even if the indoor decoration materials and furniture products with formaldehyde emission meets the appropriate standards, and also due to the use of materials the density is too large to cause pollution of indoor air formaldehyde;⑤Indoor formaldehyde pollution choice of decoration materials, such as paving all types of wood flooring of the room above the tiled room, the wall pasted wallpaper a room higher than the wall paint latex paint room only⑥Types of wood laying on the ground floor, the artificial wooden furniture made of all kinds of wood-based panel of formaldehyde in the indoor air contribution maximum is the main source of pollution of indoor formaldehyde pollution control this sources of pollution of indoor wood-based panel and its products, will effectively reduce the concentration of formaldehyde in the indoor air;⑦Indoor air concentration of formaldehyde in the indoor temperature, the higher the temperature, indoor decoration materials formaldehyde emission rate, the faster the greater the concentration of formaldehyde in indoor air.Detect and analysis wood-based panel formaldehyde emission by desiccator method, concluded as follows:①Wood-based panel formaldehyde emission increases with increasing temperature,25℃increase is particularly significant, which can be drawn, the higher the room temperature, the higher the indoor air concentration of formaldehyde and formaldehyde emission of wood-based panel with increasing temperature increases.②Artificial wood placed longer the smaller the formaldehyde emission, but is reduced to a certain extent after the formaldehyde emission of balanced stable phase under ambient conditions, is difficult to continue to decrease.③After heat treatment of artificial wood formaldehyde to release a quantity to decrease, the higher the heat treatment temperature, the plate formaldehyde treatment after the release amount is small, but the temperature of110℃plate occurred deformation,cracking phenomenon, has seriously affected the plate other performance indicators, in addition to considering energy-saving low angle, and does not influence the plate other performance index, conservative advice heat treatment temperature of40℃-60℃④Artificial wood surface after the sealing treatment formaldehyde emission is reduced significantly.The actual significance of the cause of indoor formaldehyde pollution control decoration materials:①Correctly select the scientific and rational use of materials in the decoration process, try to choose the formaldehyde emission materials. For example, the ground decoration materials tile and pure solid wood flooring better than laminate wood flooring and carpet; wall decoration materials, the aqueous interior latex superior wallpaper and wooden acoustic panels, wooden sound-absorbing board is mainly made of inorganic materials available ore cotton acoustic board instead. ②Use40℃-60℃heat treatment, rapid emission of formaldehyde in the plate, reaching the lower degree of balance and stability before wood-based panel processing.①Made of artificial wood products, it is necessary to do a good job of sealing treatment of the surface. For example, both sides to seal the deal furniture plates, the plates exposed to the cross-section and the end face, flooring interface.