Many people say that the new house must be ventilated for at least half a year. If you use environmental protection material as far as possible for house decoration, dry only for one or two months, formaldehyde measurement value is lower than standard, can you rest assured to move in? It is understood that formaldehyde emission in 3 to 15 years. If formaldehyde meets the standard during measurement, will it exceed the standard again during the time of living?

How to effectively control the source of harmful substances in the selection stage?
What are the methods and precautions?
How to judge that harmful substances have caused harm to us, and what are the performance characteristics?
How to deal with the pollution sources effectively to achieve good results?

Check out this article to find out all the answers.

Is It Necessary To Dry The Newly Decorated House For Half A Year?

Decorating a house is something that everyone and every family will experience. In many reports, we have also seen a lot of news about the house pollution source exceeding the standard, which leads to the unfortunate death of newborn children. At the same time, it also pollutes the indoor environment. It is really necessary to ventilate and dry the house after decoration. The specific time can not be determined by a fixed period. It depends on the release cycle of the pollution source itself. In short, it means how long the materials used in the production process will be released.

What Are The Main Sources Of Pollution For Indoor Decoration?

Many countries have done a lot of research and Discussion on the nature and harm of pollution. In addition to formaldehyde pollution, which has long been known to all, there are many pollution sources that can cause harm to our body, especially to the newborn children, children and the elderly with low immunity and patients with special diseases.

1.Harmful Volatile Organic Compounds

In the process of decorating houses with harmful volatile organic compounds, such as wall latex paint, leather products, wall wallpaper, a series of plywood, plastics, roof and wall insulation materials, as well as indoor artificial panels, such as large core board, wall decoration panel will release volatile organic compounds. Different decorative materials have different dyeing periods. Professionals have made tracking tests on the floor, wall coating (some products) and wallpaper, which are commonly used decoration materials. The research data show that the pollution periods of these three materials are 1 month, 2 months, 3 months and 15 days respectively.

2.Radionuclide

Natural granite has the highest internal and external radiation index, while limestone and concrete are lower. The radioactive level of marble tile, ceramic tile and other decoration building materials is medium, and the radioactive glaze of ceramic tile is far higher than that of the back. The harm of radionuclide to human body involves many systems such as heredity, immunity, hematopoiesis and digestion. Radiation also has carcinogenic, mutagenic and immunosuppressive effects, causing great harm to human body.

3.Other pollution sources

Indoor decoration materials will slowly release some other chemicals harmful to human body. For example, natural stone and ceramic products can precipitate fluoride, sulfide and lead, nickel, chromium, cobalt and other metal substances. These precipitates can enter the human body by polluting the diet, contacting the skin or forming aerosols, which is an invisible start to harm the human body. Common paints, coatings, plastics, etc. contain lead.

How To Judge Whether The Indoor Pollution Source Is Harmful To The Body

• There are pungent, dazzling and other irritating odors in newly decorated house and office buildings or newly purchased furniture, and the odor does not disperse for a long time. For example, if you stay in this environment for a long time, your eyes can't be opened, and your eyes are dry and astringent.
• The time we spend indoors at night is fixed. We all need sleep supplement. When we get up in the morning, we feel depressed, nauseous and even dizzy.
• After the decoration, there is often a cold at home, which will cause irregular cold.
• Children in the house often cough, sneeze and have poor immunity. They don't cough much in the outdoor environment. When they return to the decorated house, they often cough. Adult men and women will cough, but there is no cold symptom.
• Family members had no allergy symptoms, but they often had allergies and other problems after moving into the new house.

Which Materials Are The Key Factors In The Home Decoration Process

1.Wood Products

Products specific to the hard loading stage. Cabinet, bathroom closet, wardrobe, parapet, cloakroom, wooden door, stairs.

The harmful substances of these indoor wood base processing cannot be avoided.

Wood Based-Panel: This kind of products are all wood products, such as cabinets, bathroom cabinets, wardrobes, wall panels, cloakrooms. In the selection of the basic level, they are based on integrated boards, that is, wood chips or small-sized wood are processed into fixed size boards. In the process of this basic board material, it belongs to the wood wedge and other raw materials + adhesive glue, and then completed by stamping wood based panels.

The indoor wood products: you can't avoid the repeated pollution of surface technology.

• Paint Free Board Products: The paint free board can complete the furniture of the cloakroom, wardrobe and bathroom cabinet by cutting the size and sealing the side. This kind of furniture does not need to be painted on the board, and the environmental protection degree depends on the environmental protection degree of the base plate.
• Oil Lacquer Coating Products: It is inevitable that this kind of products are basically solid wood furniture products, which need to be treated with paint layer on the surface layer. This kind of furniture surface treatment paint is: wood paint. The most harmful substances of paint to human body are formaldehyde, benzene, TVOC and so on. Therefore, in the treatment of this kind of plate, the repeated pollution of surface layer technology is still unavoidable.

2.Wood Flooring

The base course and surface layer of wooden floor are all solid wood. The surface layer of this kind of products is just like the furniture of solid wood. It needs the paint treatment of the surface layer, that is, wood paint. Its function is to protect the floor surface layer and change the color of the floor material. It is suggested that the choice of floor is wood effect tile flooring.

3.Movable Furniture Products

Wooden frame sofa, dining table, dining chair, desk chair, children's bed and other furniture are mostly paint products. The most harmful substances of paint to human body are formaldehyde, benzene, TVOC, etc. Therefore, in the treatment of such boards, repeated pollution of surface process is still unavoidable. In the choice of home use: water-based wood paint or environmental protection wood wax oil for surface treatment.

4.Wall Top Finish Material

Latex Paint, Wallpaper, Diatom Mud: The most commonly used wall decoration materials are latex paint products. The area of latex paint is about three times of the building area, that is to say, the area of 100 square meters of the house, the painting area reaches 300 square meters, which can be calculated in such a simple way.

5. Soft Decoration Fabric

Sofa Cushion, Mattress, Curtain Fabric: Although the indoor air is much better after the hard installation ventilation, after adding the furniture and installing the curtains, the indoor air will be full of a different stimulating taste.

After all, the house should be decorated, and the budget is limited, so how to minimize the cost for home decoration? And how to dissipate harmful substances such as formaldehyde to the greatest extent?

1.Raw material selection

• Plate products: Choose base plate with environmental protection standard up to E1 level, or paint free board, wear-resistant board, and plastic absorption board.
• Surface process materials of wood furniture: Choose the surface treatment of water-based paint or wood wax oil.
• Wall emulsion paint: Some latex paint are water-based paint, some are oil-based paint, some are water-based paint and oil-based paint, try to choose water-based paint.
• Wallpaper products: The wallpaper of pure paper will be better, and plant glutinous rice glue will be selected for the base course of paving.

2.Eliminate the use of fresh air: how to achieve efficient air flow in a simple way

It is not worth the loss to use fresh air ventilation for air flow before moving in. Moreover, the air volume of fresh air can not reduce the formaldehyde at all. There are three existing states of formaldehyde: free, adsorbed and combined. Only when formaldehyde is in free state and supplemented by four times of normal wind speed, can formaldehyde be blown away. At this time, a fan can work.

3.The use of activated carbon and adsorbent

Granular activated carbon (GAC) is often used to adsorb molecules, and its adsorptivity is related to the pore size distribution of various types of carbon, so activated carbon can be placed for adsorption.

4.Utilize the high temperature in summer to dissipate formaldehyde and more harmful substances

When we exercise in winter, we sweat less, but the hot summer season is like a sauna. With the increase of temperature, formaldehyde emission is accelerated and the pollution is aggravated. The experimental results show that the formaldehyde concentration in the indoor air will increase by 15% - 30% when the room temperature rises by 1 ℃. When the temperature reaches 30 ℃, the emission of formaldehyde will reach more than 19 times of normal temperature.

In summer, it is recommended to open the curtain to let the sunlight enter the room as much as possible, and let the outdoor high temperature enter into the room as much as possible, so as to complete the high-temperature release of formaldehyde, and combine with ventilation to volatilize formaldehyde to a large extent.