The most concerned about people's decoration is whether the furniture formaldehyde exceeds the standard and whether the floor formaldehyde exceeds the standard, but often ignores an important source of formaldehyde pollution, that is, the wooden door. Recently, the topic of excessive formaldehyde in wooden doors has caused a lot of heated discussion. The national mandatory standards for wooden doors stipulate that the formaldehyde emission standard for indoor use of wooden doors is E1, that is, it cannot exceed 1.5 mg/L. If the formaldehyde emission of wooden doors exceeds this standard, it will easily cause indoor formaldehyde pollution exceeding the standard, endangering the body. health.
How to judge whether the wooden door is environmentally friendly?
Insiders told us that to buy a wooden door, we must first look at the environmental protection index. The formaldehyde emission of the wooden door should be less than 1.5mg/L. In addition, attention should be paid to whether the heavy metal content exceeds the standard. For example, the soluble lead should be less than 90mg/kg, and the soluble cadmium should not be greater than 75mg/kg.
The wooden doors on the market today are mainly classified into two types: original wood doors and composite doors. Original wood doors, as the name suggests, all parts are machined from a single piece of wood, without the use of adhesive compound splicing, the parts are connected by a gutter structure; and the connection between the plate body and the parts of the composite door is glued. The agent is bonded. In general, the formaldehyde content of composite doors is much higher than that of original wood doors.
So, will the original wooden door be safe and reliable?
The answer given by the industry is not necessarily, the original wooden door may not be absolutely safe and formaldehyde free. Although, in theory, the original wood door is made of pure natural wood, it should not contain glue and paint. However, in actual production, this pure natural wood door is often unstable in quality and is prone to cracking and deformation. Therefore, the “original wooden door†currently on the market is not a pure original wooden door, and glue and paint must be used to some extent. With the current manufacturing process, the wooden door can not achieve absolute zero formaldehyde.
The composite door has a large amount of glue used in the process from assembly to skinning, and the pollution is more difficult to avoid.
The insiders remind consumers to purchase the wooden door, the right to ask the business to issue environmental protection materials related certification and authoritative department inspection report. Many brands of wooden doors verbally emphasize the environmental protection of products during the sales process, but they cannot get the relevant inspection basis. This situation should be carefully purchased.
What should I do if I buy a wooden door with excessive formaldehyde?
1. Multiple ventilation can reduce indoor air pollution to some extent.
2. Use formaldehyde to remove formaldehyde from the source of pollution. The most commonly used formaldehyde scavenger is photocatalyst, and the photocatalyst used for wooden doors and wooden furniture is preferably a "photocatalyst wood essential oil" which has a curing effect on the board. Since the wooden door is the most frequently used furniture in the home every day, the surface is easily scratched, and the photocatalytic wood essential oil can reduce the occurrence of scratches while removing formaldehyde.
3. Solid formaldehyde removal products are easier to use. The most commonly used solid formaldehyde removal products on the market today are activated carbon and Maya blue. The most effective removal of formaldehyde in activated carbon is the "coconut activated carbon" made from coconut shell, followed by bamboo charcoal.
The principle of formaldehyde removal of Maya blue and activated carbon is slightly different. In addition to the adsorption of formaldehyde, Maya Blue focuses on the decomposition of formaldehyde, which better prevents secondary pollution.
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