Preparation of environmentally friendly materials for indoor environmental pollution caused by waterproof coatings

Beware of waterproof coatings polluting indoor environment and environmentally-friendly materials. Once the waterproof coating containing contaminants is used, it will cause indoor environmental pollution for a long time.

In the decoration of the kitchen and the bathroom, waterproofing is a necessary procedure, and in the 10 mandatory national standards, there is no regulation standard for the harmful substances of the waterproof coating, so it is necessary to further strengthen the management during the home decoration. The Indoor Environment Monitoring Center of China Interior Decoration Association has also received consultations from consumers. Some homes have found that the smell in the bathroom and kitchen is relatively large. After testing, the inspection center found that the pollution is mainly caused by waterproof coatings. It is not easy to remove. Ms. Wang, who lives in the Kowloon Garden, has no choice but to remove all the renovated bathrooms and re-waterproof them. Experts remind people not to overlook the other important part of indoor decoration pollution - waterproof coating pollution.

Waterproof construction 8 minutes poisoning

Not long ago, a waterproofing coating poisoning occurred in a hotel renovation site in Beijing, causing the consequences of one death and two injuries. The poisoning was caused by the waterproof coating and the toxic gas released by the workers during the construction of the waterproof coating on site.

According to the survivors, on the day of the incident, three construction workers began to apply waterproof coatings at 8:20 in the morning. One of the workers found a respirator to work under the pool. After about 8 minutes of work, three workers felt uncomfortable. The person fainted, and the other two people fainted in the ambulance process. After 20 minutes, the poisoned person was sent to the hospital for rescue by the emergency center. One of them died when they arrived at the hospital, and the other two were out of danger after being rescued. Workers who had no previous history of liver disease after poisoning showed elevated transaminase, and there was still no significant improvement. The cause of construction workers' poisoning is the toxic gas released by the workers during the construction of the on-site waterproof coating. The raw materials are the polyurethane waterproof coatings produced by a waterproof building materials company in Beijing, which is bought by the workers, and produced by a paint factory in Beijing. Nitro thinner.

There are still markets for obsolete products

At present, in the renovation project, it is necessary to waterproof the kitchens and toilets where the water environment is frequently used. The indoor environmental monitoring center found that some of the tar-containing polyurethane products are more serious in the waterproof coatings. These materials are generally made of coal tar or raw materials containing some coal tar. The volatile coke oil has a pungent odor. Because the molecular weight of coke oil is relatively large, it is easy to deposit in an indoor environment where air does not flow. Excessive inhalation of coke oil and gas can lead to rapid poisoning death; another drawback of this type of waterproof coating is the use of organic solvents as diluents, organic solvents such as toluene, xylene and other toxic substances? Long-term low-dose inhalation of coke oil and benzene Can cause respiratory diseases and dizziness, nausea, and cause cancer. At present, this product has been designated by the relevant state departments to eliminate building decoration materials.

However, due to the irregular management of the decoration market, some inferior products still have their own space for survival. In particular, the “decoration guerrillas” only value short-term interests. Most of the constructors do not have basic health knowledge, and consumers do not have enough knowledge of waterproof knowledge. They often introduce pollution into their homes without knowing it.

Environmentally friendly materials are strictly controlled

Experts reminded that some decoration companies and consumers mistakenly believe that the indoor waterproofing treatment area is not very large, and there are cement and ceramic tiles on the surface after treatment, which is not easy to cause pollution. In fact, because the indoor waterproof layer generally has to reach a certain thickness before it can have the corresponding waterproof function, the use of the material is relatively large. Once the waterproof coating containing the pollutants is used in the waterproof construction, the indoor environment pollution will be caused for a long time.

At present, the pollution of waterproof coatings for controlling interior decoration and decoration mainly needs to be controlled from the materials used. Non-toxic and environmentally friendly waterproof coatings should be preferred. At present, acrylate waterproof coatings and tar-free polyurethane waterproofing materials are proven non-toxic and odorless environmentally friendly products, and indoor interiors treated with such waterproof coatings can meet the requirements of indoor environmental protection. Consumers should choose materials from reputable markets and choose qualified home improvement companies for construction.

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