Formaldehyde will inevitably appear in the decoration of new houses. Formaldehyde will produce things that are harmful to human bodies. If it is not handled properly, it will cause harm to human bodies. In addition to formaldehyde in paints and coatings, new wooden houses also have wooden floors. In the national standard for reinforced flooring, the amount of formaldehyde released is used to measure whether the floor is environmentally friendly; according to the amount of formaldehyde released, it is divided into two levels, E1 and E0, which meets the E1 environmental protection standard, indicating that the floor is environmentally friendly and can be used with confidence. Then the following will introduce the composite floor with less formaldehyde content and the treatment method of floor formaldehyde .
1. Classification of composite flooring There are two main types of composite flooring currently on the market:
One type is solid wood flooring; the other is laminate flooring.
These two types of composite flooring have different characteristics and different requirements in terms of use and maintenance.
The solid wood composite floor not only has the advantages of beautiful and natural solid wood floor, comfortable foot feeling and good thermal insulation performance; but also overcomes the shortage of the solid wood floor due to the shrinkage of monomers, which is easy to warp and crack. Nowadays, in order to no longer deteriorate the living environment, countries around the world generally attach importance to the protection of forest resources. Compared with solid wood flooring, parquet can save rare wood resources. In addition, the solid wood composite floor is easy to install, and generally no keel is required. But the ground leveling is required.
The solid wood composite floor can be divided into three categories: three-layer solid wood composite floor, multi-layer solid wood composite floor, and joinery composite floor. Three-layer solid wood composite floor is mostly used in the room decoration. The three-layer structure solid wood composite floor is formed by staggering and laminating three layers of solid wood. The surface layer is made of high-quality hardwood slats. The commonly used tree species are ash, birch, beech, oak, maple and cherry wood. The middle is cork planks, and the bottom is spin-cut veneers, arranged in a crisscross pattern.
This structural composition makes the three-layer solid wood composite floor not only have the advantages of ordinary solid wood flooring, but also effectively adjusts the internal stress between the wood, and improves the shortcomings of the large change of the wood with the seasonal dry humidity. Solid wood flooring has a good foot feel, natural texture and color, and a little poor hardness. And because it is natural, there are large differences in texture and color, and wood keels are required for paving, and the price is relatively high. High-strength composite flooring has higher hardness, good wear resistance, simple and convenient paving, and lower price, but the foot feel is slightly worse. Solid wood flooring absorbs the advantages of the above two, the price is between the two, but the hardness is the worst of the three.
Second, the choice of composite flooring When selecting composite flooring, we must ensure that the main indicators are qualified. These indicators and national standards are:
1. Water-absorbing thickness expansion rate: The water-absorbing thickness expansion rate of the first-class products is below 2.5%; the water-absorbing thickness expansion rate of the first-class products is below 4.5%. With water bubbles, the quality of the water is poor.
2. Surface wear resistance: The floor is called a fake floor because there is no wear layer or the wear resistance is extremely low. This kind of floor surface is no different from a real composite floor. After sanding it with sandpaper several times, you will find The decorative pattern was polished and immediately whitish. This kind of floor is a fake floor. The service life in public places generally does not exceed half a year. The more abrasive, the more expensive the price. The number of wear-resistant revolutions in public places is more than 9000 revolutions; if you have a large population in the family, you do n’t pay much attention to maintenance, you can choose a higher wear resistance; but if you pay more attention to the maintenance of the floor, the floor is subject to strong, hardware wear With fewer opportunities, it may be more economical to choose a relatively low wear resistance. The household wear-resistant revolutions can be more than 6000 revolutions. . You can wipe it with sandpaper, and the poor quality is easy to find. The abrasion resistance of composite flooring mainly depends on the coating of aluminum oxide crystal (commonly known as gemstone). The higher the content of aluminum oxide crystal per unit area of ​​the floor, the higher the wear resistance.
3. Formaldehyde emission: The value of formaldehyde emission of Grade A products is within 9mg / 100g. B pole 9 to 40 mg / 100 g, can be used to achieve B grade. The quality of the glue determines the pollution level of the reinforced composite floor, and the good quality glue has a low formaldehyde content. "European" flooring has a formaldehyde content of only 5MG / 100G, which is lower than the EU standard and ranks first, becoming the first green product imported flooring that has been certified by the China Environmental Labelling Committee.
4. Density: The density of qualified products ≥ 0.9g / cm3.
5. Moisture content: The moisture content of qualified products is in the range of 3.0-10. 0%. When buying floors, people can check these data through the product inspection certificate,
6. Pick whether the tongue is straight. The integrity of the mouth is directly related to the life of the floor.
7. The surface of the impregnated film paper should be free of dry flowers, opaque white dots, wet flower mist, stains, scratches and indentations, and the tongue and groove around should be kept intact. The length, width, and thickness of the composite board should be the same as the product introduction. Multiple composite floors can be arbitrarily taken and observed after splicing to see if the joint seam of the tenon joint has a feeling of unevenness. Assemble by yourself to observe whether the combination of tenon and groove is tight, and whether the feel is smooth. The middle layer of the solid wood composite floor can not only increase the foot feeling, but also prevent the expansion and deformation of the floor, and the thickness is preferably 7-10mm. In the selection of materials, the middle layer is of higher quality with rubber wood and pine, followed by willow. Multi-layer solid wood composite flooring is often made of multi-layer plywood as the base material, and the surface decorative panels are mostly laminated with hardwood sheets, and the thickness is usually between 0.2-0.8 mm.
8. The middle layer of the solid wood composite floor can not only increase the foot feeling, but also prevent the expansion and deformation of the floor, and the thickness is preferably 7-10mm. In the selection of materials, the middle layer is of higher quality with rubber wood and pine, followed by willow. Multi-layer solid wood composite flooring is often made of multi-layer plywood as the base material, and the surface decorative panels are mostly laminated with hardwood sheets, and the thickness is usually between 0.2-0.8 mm. Consider the size of the living room area. In general, if the room area is large and the lighting is sufficient, it is better to use darker color and coarse texture wood floors to make the larger room relatively compact; on the contrary, for small rooms, light colors and detailed textures can be used. The wooden floor gives a sense of openness, and also makes the smaller room appear large.
9. Considering the different functions of each room, different rooms can choose to use wooden floors of different colors. The living room is the most public place in the home and the main place for family activities and guests. Therefore, it is appropriate to use transparent and soft colors to create a bright, harmonious and elegant atmosphere; the bedroom is for rest and relaxation Places should use warm colors or some neutral color floors to give people a quiet and comfortable feeling; children's room is a place for children to sleep, study and live. It should be simple, cheerful and bright, and light and bright colors will be good; The study is the place where the owner of the room works and studies. The environment should have a strong cultural atmosphere, and the colors used should also be solid dark floors.
Purchase of parquet: Misunderstanding five --- think that parquet is high in formaldehyde and not environmentally friendly. "
Formaldehyde, known as the "invisible killer", commonly known as formalin, is one of the main substances that harm human health. Formaldehyde is made into an aqueous solution with a concentration of 37% -50%, which is known as a solution for storing corpse specimens and sterilization. The harm of formaldehyde to human body is the same as formalin's principle of preserving corpses.
Formaldehyde is very harmful to the human body. After inhaling high concentrations of formaldehyde, severe irritation of the respiratory tract and edema, eye irritation, headache, and bronchial asthma may also occur. Direct skin contact with formaldehyde can cause dermatitis, stains, and necrosis. Frequent inhalation of a small amount of formaldehyde can cause chronic poisoning, allergic dermatitis, nail keratinization and fragility, nail fingertip pain, long-term inhalation of pregnant women may lead to deformity or even death of newborn babies, long-term inhalation of men may lead to decreased sexual function, and systemic symptoms include headache , Fatigue, anorexia, palpitations, insomnia, weight loss, etc.
Formaldehyde is widely present in people's living space, engulfing people's health invisibly. Because almost all wooden homes contain formaldehyde, especially the wooden floor is the most. At one time, many people talked about the color change of the floor. However, as long as the formaldehyde is removed by high and new technology, the formaldehyde content of the floor can be controlled to a degree that does not cause harm to the human body.
The new E0 health floor in São Paulo uses vacuum ammonia treatment technology to remove formaldehyde, and the pavement is free of gelatinization, eliminating the second pollution of formaldehyde to the home during the home improvement process, reducing the formaldehyde content to the lowest possible standard, and the unit formaldehyde content is only It is 1/3 of the E0 standard stipulated by the state, no longer has side effects on the human body, and completely conquers the "invisible killer".
There are more brands of laminate flooring, and in fact things are not too different. If you want to check on the Internet, the composite floor is nothing more than the indexes of wear resistance (revolutions), resistance to expansion (coefficient of expansion in water), formaldehyde content, etc. These indexes can be looked at and asked, but they can only be asked But, huh, profiteers generally do n’t make their claims too bad. The key is to inquire more about its reputation among the masses.
There are three major hazards of excessive formaldehyde on the floor
1. Sensitization: Direct skin contact with formaldehyde can cause allergic dermatitis, stains, and necrosis. Inhalation of high concentrations of formaldehyde can induce bronchial asthma.
2. Stimulating effect: The main hazard of formaldehyde is the stimulating effect on skin and mucous membranes. Formaldehyde is a toxic substance of protoplasm, which can combine with protein and cause serious respiratory irritation and edema, eye irritation and headache when inhaled in high concentration.
3. Mutagenic effect: high concentration of formaldehyde is also a genotoxic substance. Experimental animals can cause nasopharyngeal tumors when inhaled in high concentrations in the laboratory.
What should I do if the floor formaldehyde exceeds the standard? There are countless methods for purifying formaldehyde on the market, but there are few truly effective and convenient methods. Here are some practical methods to tell you how to effectively remove indoor formaldehyde.
[Method 1: Plant absorption method]
Plants can absorb toxic and harmful gases such as formaldehyde, and also have the magical effect of purifying the air. Of course, not every plant has the effect of purifying formaldehyde. Plants that can absorb this type of gas include: cactus, chrysanthemum, chrysanthemum, reed, etc. Generally speaking, large-leaf plants have a good effect of purifying the air.
ã€Method 2: Activated carbon adsorption method】
Activated carbon is a very effective method. Activated carbon itself has porous characteristics, and the smaller the activated carbon particles, the stronger the adsorption function, it has a very strong decomposition of toxic and harmful gases such as formaldehyde. However, although the adsorption of activated carbon is strong, it cannot completely purify the air.
[Method three: folk remedies]
When it comes to home remedies, everyone may feel that there is no scientific basis. In fact, the folk remedies that have been circulating since ancient times have certain effects in some ways. For example, daily necessities such as tea dregs, onion slices, grapefruit peels, pineapple pieces and vinegar. Of course, tea dregs, onion slices, grapefruit peels, pineapple pieces, etc. cover the odor of formaldehyde and other gases by their own odor, but vinegar can chemically react with this gas, thus eliminating this toxic and harmful gas.
Editor's summary: Relevant information about composite floors with low formaldehyde content and floor formaldehyde treatment methods is introduced here for everyone. I hope this article will be helpful to everyone. If you still do n’t understand something, you can leave a comment below, we will answer it as soon as possible.
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