“The winter decoration materials are sloppy and there is no problem because the colder the weather, the less obvious the smell.†This is a post-wine mantra of a decoration company CEO. Experts of the Shanghai Indoor Environmental Purification Association expressed concern that the ambient temperature of indoor air quality testing was not stipulated due to the relevant national standards, resulting in high indoor air quality in the winter, and that in June and July of summer, due to The release rate of pollutants in the decoration materials will increase with the increase of temperature, and the complaint rate for excessive decoration pollution will increase significantly.
The expert explained that the experimental data showed that for every 1 degree Celsius increase in room temperature, formaldehyde volatilization in wood products, floors, etc., will increase the concentration of formaldehyde in indoor air by 0.15-0.37 times. Similarly, other pollutants
Most of the dyed materials also have similar characteristics. In other words, in the same room, when the temperature is above 30 degrees Celsius in summer, the indoor pollution level may be 3 to 7 times higher than when the temperature is below 10 degrees Celsius in winter. Therefore, many rooms that pass the test in winter may be unqualified during summer testing. Worryingly, people generally use air conditioners in the summer, and the indoor air exchange rate is low. In this environment, people feel as if they are stinging and itchiness in their eyes as if they are in a closed room that is sprayed with insecticide. However, at that time, consumers complained that they would not be able to detect the original test report or move into furniture, resulting in no complaints.
According to the reporter's understanding, the current indoor testing industry specifications have specific provisions on the testing conditions. For example, the testing should be arranged after the renovation is completed at least 7 days. After full ventilation, close the external doors and windows after 1 hour sampling, etc., but when sampling The ambient temperature has no corresponding regulations. In this regard, real estate, decoration industry, people are clearly more clear than the average consumer, an industry source reminded reporters: Most of the room to fully furnished rooms concentrated in the end.
Experts of the Shanghai Indoor Environmental Purification Association reminded the public of the winter decoration that after the renovation is completed, it is best to turn on air conditioners and heaters to feel that the smell has become significantly darker. If it is necessary to carry out tests, it is better to raise the indoor temperature before sampling. .
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Length (m) |
Width (m) |
Height (m) |
Wire diameter (mm)
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Mesh aperture (mm) |
diaphragm |
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Mesh wire |
Selvedge wire |
helical spiral |
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2.7-5.0
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Thicker 1mm than mesh wire |
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50*50 50*100, 100*100, 50*70, 76*76 75*75 |
no |
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1.5 |
1.0 |
0.5 or1.0 |
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no |
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2.0 |
1.0 |
0.5 or1.0 |
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1 |
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3.0 |
1.0 |
0.5 or1.0 |
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2 |
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4.0 |
1.0 |
0.5 or1.0 |
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3 |
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5.0 |
1.0 |
0.5 or1.0 |
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4 |
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