Is there formaldehyde in the scraping putty powder on the wall, what is your opinion?

Is there formaldehyde in the putty powder scraped on the wall, putty powder does not contain formaldehyde, and even if there is, it is a trace amount, don't worry. The putty powder of the traditional process is usually composed of talcum powder and glue, and the glue generally uses 901 glue; In glue, formaldehyde is present in large quantities, which has certain harm to human health. With the increasing awareness of environmental protection, putty powders that use glue as a binder have been gradually phased out.

In addition, when decorating, we must pay attention to whether the putty powder is deployed on site, if it is deployed on site, workers may use construction glue or glue powder for blending in order to pursue the cost, resulting in the release source of formaldehyde.

How to use exterior wall putty: Dosage: Theoretical consumption value:

1 1 5 kg square meters (putty thickness 1 mm). Stirring: The amount of water added is subject to the consistency of construction, after stirring evenly, leave it for 10 minutes, and then stir it to use (hint:

This product cannot be mixed with inferior white latex to avoid adverse reactions). Surface treatment: The surface of the wall is smooth or new building materials, such as gypsum partition board, polystyrene board, paper gypsum board, etc., which need to be treated with interface agent.

Scraping and leveling: Due to the high strength of the putty, the putty should be leveled with a scraper when the putty is in a semi-dry state (without deformation by hand light pressure). Storage and Transportation:

Store in a cool and dry place, the shelf life is 12 months, and the transportation is handled according to "non-dangerous goods".

The standard classification of putty powder, our national standard, divides the finished putty into: general putty (type Y) and water-resistant putty (type N). Note:

The product inspection report indicates which model standard index is used for inspection. General putty (type Y) is used in places where water resistance is not required. It is composed of double fly powder (i.e. calcium carbonate), starch gum and cellulose.

Among them, starch gum is a kind of gum that dissolves in water, melts when exposed to water, and is not resistant to water. There is also a water-resistant putty (N-type) for places where water resistance and high bond strength are required.

It is composed of double fly powder (i.e., calcium carbonate), gray calcium powder, cement, organic rubber powder, water retention agent, etc. It has water resistance, alkali resistance and bond strength. After the test of water resistance and alkali resistance, no blistering, cracking and falling off were found, and there was no abnormality in 48 hours of immersion in water and 24 hours of alkali resistance.

As moisture absorbs year after year, the water-resistant putty layer of the wall will be maintained to be harder and stronger.

There is formaldehyde. Because the putty powder sold on the market contains a certain amount of formaldehyde, but the formaldehyde content of good putty is a little less.

The putty material itself is formaldehyde-free. However, some decoration personnel will add some thickeners when preparing putty for the sake of good-looking, beautiful, convenient and other factors, such as engineering glue, cooked paint, etc., which contain formaldehyde. Therefore, it is better to ventilate for a few days after scraping putty powder before moving in.

Formaldehyde is mainly the glue in furniture, other paint powder or some other decoration materials will only release a small amount of formaldehyde, putty powder will not have too much formaldehyde.

In fact, it is still very good, if you use more environmentally friendly materials, then it will not produce a lot of formaldehyde.

There is formaldehyde. Under normal circumstances, putty powder does not contain formaldehyde, but if it is directly mixed with putty powder with water, it does not contain formaldehyde. However, the adhesion between the putty powder mixed with water and the wall is not high, so in order to increase the adhesion of the putty to the wall, glue will be added to stir, and formaldehyde in the glue is unavoidable.

How to make wall putty? 1. Shovel wall skin, you can do a slight moisturizing test to check whether the adhesion of the original coating is qualified, and the vast majority of the wall surface has been inspected in one word: shovel!

The wall is closed with 801 glue to enhance the adhesion between the putty and the wall. If you encounter an old house, you can brush the interface agent to increase the insurance factor. The yin angle is treated with the "elastic line" on both sides (pay attention to the verticality), and the yang angle is treated with a leaning rod.

Use gypsum powder and 801 glue to prepare gypsum putty, and straighten all the gypsum putty. In general, plaster lines are not recommended.

2. Leveling the wall, first check whether the wall has a "hollow drum" (can be struck, listen to the sound and noisy to judge), and then use a slightly longer aluminum alloy ruler to check the depression of the top and the wall, mark it, and flatten it with gypsum greasy lead.

3. Formally scrape the putty, and after the gypsum putty is dry, scrape and apply the putty (each time it must be thoroughly dried). There are two ways to test whether the putty is dry: first, observe whether the color is consistent; The second is to see if there is a phenomenon of "sticking sandpaper" when sanding.

Strong light oblique grinding, the top surface can be 360 sandpaper.

How to hang the net with batch putty? The procedure for the hanging net on the wall is to brush the glue first, polish the putty two to three times, and then level it. After that, it is a brushing of paint, brushing the matching primer once, and the topcoat twice.

1. Before the decoration wall treatment, the most important thing is to check the wall to see if it is solid and smooth. If there are cracks or holes in the wall, they need to be repaired and leveled with plaster.

2. Prepare the materials for decoration wall treatment to protect the materials and furniture in the room and clean the floating dust in the room. Then roll the concrete interface paint evenly on one side, and after it dries, you can start scraping the putty. If it is a newly built wall, you need to wait for the 28-day cement curing period before scraping putty.

3. Scrape putty for decoration wall treatment, generally scrape the putty on the wall 2 times, the wall with poor flatness needs to be scraped several times, and the more serious ones need to be leveled by gypsum first, and each putty scrape needs to be more than 2 hours.

After the house is renovated, the formaldehyde in the house is generally released from the following materials:

The first is a material that uses glue as a binder, which contains formaldehyde. For example, the large core board (commonly known as blockboard, woodworking board) is a plywood with a solid wood core, which cuts the log into strips, splices it into a core, and processes it with external veneer, and its vertical (distinguished by the direction of the core board) has poor bending and compressive strength. Glue core blockboard is a blockboard made of adhesive glue and core strips glued together into a core.

The second type is MDF. MDF is made by grinding and gluing small-diameter wood and pressing it under high temperature and pressure.

The third is particleboard, also known as particle board and bagasse board, which is a wood-based panel made of wood or other lignocellulosic materials, which is glued under heat and pressure after applying adhesive.

The fourth is laminate flooring and solid wood parquet, which have trace amounts of formaldehyde in these materials, but they generally meet the standards, and it is best to choose a larger brand.

The fifth type is latex paint. Latex paints also contain formaldehyde, so be careful.

So, how do you eliminate formaldehyde in a room?

The first method is the ventilation method. In fact, ventilation is one of the most well-known and cost-effective methods, but it takes a long time. The emission period of formaldehyde is usually 3 to 15 years, and generally after the decoration of the new house, it is necessary to open the windows for ventilation for more than four months, so that the indoor formaldehyde content can be reduced to a relatively safe range.

The second method is activated carbon adsorption. In fact, solid activated carbon has the characteristics of many pores, and the smaller the particles of activated carbon, the better the adsorption effect. However, the adsorption capacity of activated carbon is small, in a certain room area, the amount of activated carbon is too small, and the effect of activated carbon is also very small, and activated carbon also has a disadvantage that it is unstable, and the formaldehyde adsorbed into it may also be emitted to produce secondary pollution.

The third method is the plant absorption method. We know that plants have a strong ability to absorb formaldehyde, such as cactus, spider plant, reed, ivy, iron tree, chrysanthemum, etc.

In the wall decoration, scraping putty during the base treatment is an indispensable step. And when treating the base layer of the wall, some people will use some commercial glue, such as 801 glue.

If it is putty powder, it does not need to be stirred with 801 glue, if it is talcum powder or double fly powder, gypsum powder needs to be stirred with 801 glue. The glue is toxic, and now it is changed to water-based putty powder, which is directly mixed with water, but the viscosity of some water-based putty powder with poor quality is not strong, and it is easy to crack and peel after scraping on the wall to dry.

No formaldehyde is not glued, as long as the glue is used, there is formaldehyde, the lower the cost, the higher the formaldehyde content, and the volatilization period of formaldehyde is as long as 3-15 years, and the formaldehyde content is lower than the national regulations.

How to prevent formaldehyde when repairing? First, environmental protection decoration, the use of environmentally friendly materials, the formaldehyde pollution of the new house is controlled within the environmental protection line, such as the wall and find carpentry to make wardrobes to buy environmentally friendly water paint coatings, and the purchased products and furniture also choose environmentally friendly water paint spraying products, so that there will be no harm to the human body. The second is to strengthen ventilation after the completion of the decoration, and the purification of indoor pollution sources, such as the use of activated carbon, air purifiers, green plants, etc.

Under normal circumstances, interior wall putty powder is formaldehyde-free, and the putty used in construction is divided into ordinary putty and water-resistant putty, and the ordinary putty is dedicated to the interior, which is generally composed of heavy calcium powder and rubber powder, and the main component of calcium powder is calcium carbonate, which means that there will be no formaldehyde in the fine noodles ground by stone. At that time, all the ingredients made of gray calcium powder and cement did not contain formaldehyde, so you can be completely assured when you use it.

There is formaldehyde in scraping putty, because formaldehyde generally exists in liquid and gaseous state, and the glue, paint, and latex paint used in scraping putty are liquid products that contain some formaldehyde, because formaldehyde is used as a preservative. However, if you do not use glue in the putty powder material, formaldehyde can also be avoided. Generally, putty is a dry powder material, and it does not contain formaldehyde.

The formaldehyde in the house is emitted from the furniture and some decoration materials, and some industrial supplies will be used in the production process of these things, so they will have some smell.

After the house is renovated, the formaldehyde in the house is emitted by the sofa, floor, wardrobe, and cabinets, so we must remove the formaldehyde more.

After the house is renovated, formaldehyde gas will be produced by the decoration materials, home appliances, furniture, etc., so it is not possible to move in immediately.

In the natural environment, formaldehyde generally exists in liquid and gaseous states. It is usually found in the glue, paint, and latex paint used to scrape putty (all of which are liquid products), and of course there are now formaldehyde-free products. Formaldehyde is used in these materials as a cheap preservative.

Putty is a dry powder material and is generally formaldehyde-free. The environmental performance of putty is due to the fact that it can be applied directly to the wall without the use of glue.

No, the paint contains more formaldehyde.

Scraping putty is a component that contains formaldehyde.

Generally, putty is applied to the base wall, which is the first step of wall construction, and after scraping the putty, it is also necessary to paint the primer and topcoat to achieve the best decorative effect, and it will be more comfortable to stay. After scraping putty, it is no problem to move in, but if you do not apply paint for a long time, it will be weathered, resulting in depowdering, and it will be more troublesome to deal with it at that time. It is recommended that after the putty is applied, the wall paint should be painted in time.

The high-quality finished putty with a brand is an inorganic material, and the main components are double fly powder, cement, polymer additives, sand, inorganic fillers, etc., so it is free of formaldehyde and is an environmentally friendly material.

Here I would like to remind you that some places will still choose the hanging white process of glue + double flying powder. At the same time, the glue selected is not formaldehyde-free glue and contains a small amount of formaldehyde, which greatly reduces the environmental performance at this time.