Following the "smoke type" and "photochemical smog type" pollution, modern people are entering the third pollution period marked by "indoor air pollution". According to the statistics of the China Center for Disease Control and Prevention, more than 92% of newly renovated homes have exceeded indoor formaldehyde standards. According to statistics from Beijing Children's Hospital, more than 90% of children with leukemia in the city have been renovated within six months. Pediatricians say that building and decorative materials are a major source of potential indoor air pollution, and coatings are one of the main indoor pollutants.
Pollution 1: benzene pollution
The harmful substances contained in paints and putty mainly include volatile organic compounds voc, benzene, formaldehyde, heavy metals (lead, mercury, etc.). Among them, benzene and benzene are the main pollutants. Benzene can cause leukemia and aplastic anemia is also recognized by the medical community. Patients who inhale excessive benzene may have dizziness, nausea, chest tightness, fatigue, severe coma and even death due to respiratory and circulatory failure. Chronic benzene poisoning may have irritating effects on the skin, eyes and upper respiratory tract.
The benzene in households and office buildings mainly comes from the use of a large number of chemical raw materials in architectural decoration, such as paints, fillers and various essential solvents, which contain a large amount of organic compounds, which are sent to the interior after renovation. Some of the raw materials can make the indoor air benzene content more than 14.7 times the highest allowable concentration in the country. The indoor air benzene content should not exceed 0.09/m2.
Choosing some water-based wood lacquer is the fundamental way to prevent and reduce benzene pollution in home interior decoration. Be careful not to seal the bottom of the wall with paint. This is a process that seriously pollutes the indoor environment and causes long-term benzene pollution problems. Do not use furniture made of inferior large core or MDF. It releases formaldehyde or benzene in large quantities over a long period of time.
Pollution 2: Formaldehyde pollution
Formaldehyde, which is brought about by decoration materials such as paints, has become the number one killer of indoor environment. It has been identified as a type of carcinogen by the World Health Organization, and it is believed that there is a causal link between formaldehyde and leukemia. Long-term exposure to low doses of formaldehyde can cause chronic respiratory diseases, which can cause cancer or even death.
formaldehyde. Formaldehyde mainly comes from low-grade 106 coatings. These coatings have been eliminated due to poor scrub resistance and high formaldehyde content. Another major source of formaldehyde is putty putty, because these putties are formulated with building glue, and the building glue currently used contains formaldehyde to varying degrees. Due to the large number of ash and the large amount of putty, the content of free formaldehyde is high, and formaldehyde is slowly released during the aging process of the coating after several months of decoration. In addition, the preservative in latex paint also contains a small amount of formaldehyde, which is also a source of formaldehyde pollution that is not neglected. Formaldehyde is a suspected carcinogen. Low concentrations of formaldehyde can cause skin irritation and dry and itchy throat. High concentrations of formaldehyde can cause pneumonia, pulmonary edema, and even death.
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