The higher the temperature, the faster will formaldehyde evaporate?

After renovating a new house, many friends will conduct air testing in their homes in different seasons and time periods, usually in winter and summer. The reason is that formaldehyde evaporates at different rates at different temperatures. of.

According to incomplete statistical data, in different seasons of the year, there are certain differences in the formaldehyde exceedance rate for newly renovated homes. The lowest formaldehyde exceeding standard rate in winter is 25%, the formaldehyde exceeding standard rate is 37% in spring, the highest formaldehyde exceeding standard rate is 90% in summer, and the formaldehyde exceeding standard rate in autumn is 68%. The results fully demonstrate that temperature is one of the decisive factors affecting formaldehyde release. one.

Let’s look at the comparison between temperature and formaldehyde volatilization speed through data.

In fact, roughly around 2005, when the formaldehyde problem first entered people’s attention, researchers from formaldehyde removal companies engaged in related industries conducted a study and comparison on the impact of indoor temperature and formaldehyde release. The results show that the high temperature in summer will directly cause the release of formaldehyde in the indoor air to be 50% to 70% higher than usual. For every 1°C increase in indoor temperature, formaldehyde volatilized from various pollution sources such as wooden furniture and floors will increase the amount of formaldehyde released. Formaldehyde concentration in indoor air increases 2-3 times.

The boiling point of formaldehyde is -19 degrees, which means that it is impossible for formaldehyde in our homes to stop volatilizing. When the indoor temperature rises by 10 degrees Celsius, the concentration of formaldehyde will approximately double. In terms of formaldehyde release, the rate of formaldehyde release will also double accordingly; when the indoor temperature rises from 19°C to 39°C, the amount of formaldehyde released increases from the original 0.08mg/㎡/h to 0.4mg/㎡/h?. If a person is in this environment, it will be like being in a closed room sprayed with pesticides. First, the eyes will gradually sting, and then the throat will become itchy, causing abnormalities in the trachea and the entire respiratory system, which will be harmful to health. Its big.

So what items will release a large amount of formaldehyde after the decoration of a new house?

Let’s briefly talk about the formaldehyde removal company. First of all, it is not just wooden furniture that causes indoor formaldehyde to exceed the standard, such as wallpaper, paint, leather products, composite floors and various carpets, bright colors All textile items will release formaldehyde to varying degrees.

For example, wardrobes, cabinets, bookcases, drawers, etc. made of boards are made by pressing adhesives and high temperatures during the production of boards, so the natural formaldehyde content is relatively high. For example, wallpaper, paint, leather products, and flooring production processes also need to add formaldehyde to ensure the integrity and aesthetics of the items. The formaldehyde content is relatively low, but it is unavoidable.

Now is the summer, which is the peak period for formaldehyde exceeding the standard. Whether it is a newly renovated house or a house that has been ventilated for a certain period and feels that there is no problem before moving in, we are reminded that we should first conduct some inspections on the living environment. After checking before moving in, if the air quality does not meet the standards, you must take decisive measures and do not trust various local methods. There are specialties in the industry, and professional formaldehyde removal companies are needed for professional tasks.