What is the cause of mildew?

Question 1: Moldy. What is the reason for this phenomenon? It is because the dark, humid and unventilated environment is especially suitable for the growth and reproduction of mold.

Question 2: Why are things at home always moldy? First of all, you can be sure that things are moldy, which means that the air in your room is too humid, which means that the air humidity in your room is relatively high, which may be a problem that you can't get in touch with the sun in your room. You can try to open the window for ventilation. If you live in the south, the situation will be even worse. I think the situation you mentioned is still very serious. Please see if the neighbors on the same floor have what you said. If not, there is something wrong with your decoration materials. The current construction team is really unscrupulous.

Question 3: The principle of mildew is that the mildew of articles is caused by the propagation and growth of microorganisms on articles (such as food, cigarettes, textiles, etc.). ) under certain temperature conditions. Generally speaking, microorganisms can be divided into four categories according to their effects on goods and human beings: ① pathogenic microorganisms refer to those microbial groups that make human beings sick; (2) Corrupt microorganisms refer to microorganisms that cause food and other moldy articles to deteriorate; (3) Ineffective microorganisms, whose existence is neither harmful nor beneficial to human beings; (4) Beneficial microorganisms refer to microbial groups that are beneficial to human beings. The molds that usually cause mildew of articles can be subdivided into four categories: Mucor, Rhizopus, Aspergillus and Monascus.

The mildew of articles is not only related to the environmental temperature, but also closely related to their own water content and water vapor content in the air. According to the research, mildew of different articles requires different temperature and humidity conditions. For example, when the temperature of the grain depot is between 20℃ and 35℃ and the relative humidity is greater than or equal to 85%, the grain is prone to mildew. When the temperature reaches 65438 05℃ and the relative humidity is greater than or equal to 85%, cigarettes and other commodities will be mildewed. That is to say, when the temperature is high and the relative humidity in the air is low, mold can also adhere to the surface of the object to reproduce and grow. For most other commodities except food, it is not easy to mildew when the temperature is lower than 30℃ and the relative humidity is lower than 80%.

Question 4: What causes the moldy walls? The house is damp, or there is water seepage outside.

Question 5: What is the reason why the wall is moldy 1? The reason for the wall: the water seepage on the outer wall is also easy to get moldy. Therefore, it is suggested that the outdoor wall that needs wallpaper is not a light-colored wall. The most important thing is that the wall should be waterproof. Don't let the wall get wet, or stick wallpaper near the window. Pay attention to waterproof. The water, wind and sunshine in that place have a great influence, and the wallpaper may be moldy if it is not well maintained. (Of course, this mainly refers to ordinary wallpaper. If it is very expensive and truly imported high-quality wallpaper, this situation is extremely impossible); Therefore, it is also recommended that you choose waterproof wallpaper. Now most wallpapers on the market can be waterproof, including imported pure paper wallpapers, the surface of which has been treated by special technology.

2. There is another moldy reason that we easily overlook, that is, in wallpaper construction, if the glue is not completely dried, there will be a hall wind or a large temperature difference between indoor and outdoor, and it is also easy to cause warping and bulging of the wallpaper. Because there is moisture and air for a long time in the future, the wallpaper will be moldy. Therefore, the room that has just finished wallpaper should be closed and dried in the shade. After the wallpaper is laid for 3 days, gently wipe off the residual wallpaper glue at the seam of the wallpaper with a wet towel. At this time, the whole room can be completely ventilated. This is related to wallpaper construction. Try not to soak the wallpaper before pasting, otherwise it will easily make the wallpaper moldy!

3. It is caused by high ambient humidity. This mainly happens in the south. The reason for the rainy season. Even most people think that wallpaper should not be pasted in southern weather like Hainan, Guangdong. Actually, it's not. Just pay attention to the ventilation of the room and stick wallpaper to avoid the rainy season.

Question 6: Why is the rice at home always moldy? It is best to put it under the balcony facing south or in the kitchen, keep it dry, ventilated and away from light, and don't put it in a place with high humidity! In addition, it is best not to touch the floor directly, which is easy to get moldy. You can separate the rice barrels with fresh-keeping bags, even if some of them are damp and moldy, it will not affect all of them.

Question 7: What are the moldy factors? Want it all! I don't know what moldy is. Here are some examples.

First of all, the furniture is moldy

There are two kinds of wood used in furniture:

One is natural wood, that is, we often say solid wood, such as pine, birch, rubber, beech and so on;

Solid wood is usually used to make the main frame of furniture, such as legs, feet and backrest. This is because the toughness of solid wood is good!

One is artificial wood, which is made of sawdust and glue, such as density board, foam board, plywood, curved wood and so on. Usually used as cabinet partition/back panel, table/drawer panel, etc. Because artificial wood is a standard board with uniform thickness and smooth surface, it is easy to process!

Analysis from the solid wood part:

Solid wood itself is soft, and there are ducts in solid wood, which are easy to absorb water, such as pine; In addition, there is no drying treatment before processing (there is no blank before painting, the humidity should be about 7~8 degrees, and the humidity of the finished product after painting should be below 12, which can be measured by a special hygrometer). There are two problems with high humidity of wood: wet weather is easy to mold; It is easy to crack when it is dry;

From the analysis of wood-based panels:

The humidity of wood-based panels is usually very low because they are pressed at high temperature. However, wood-based panels have a density problem. The higher the density, the less likely it is to absorb water. On the contrary, the easier it is to absorb water; The weather is humid, and low-density wood-based panels are easy to absorb water and become moldy!

How to choose high-density wood-based panels?

The most commonly used is MDF (Medium Density Fiberboard). First, look directly at the material of furniture: usually the surface of furniture is paint or leather, so pay attention to the place where loose leaves are placed, take out the drawer and look inside! The density of MDF is high, and there will be no gaps and pores in the board, giving people a very solid feeling. It is best not to buy plywood, because the material of foam board is not dense enough, the screws are not firm, and the furniture is easy to shake after a period of time! Then the weight, the heavier the density;

The price of a good MDF is comparable to that of ordinary solid wood!

Paint analysis:

Really good furniture usually has to go through 4~5 painting processes to complete the painting process, stick solid wood skin, solid wood edge sealing; In this way, even if the humidity of the material itself is high, as long as the paint is sealed, it is not easy to get moldy! Especially some furniture with a layer of PU topcoat sprayed on the surface (that is, the kind of transparent, plastic-like and bright paint; Here are some tips: PU-thick furniture is mostly made of poor materials; Most moldy furniture is those that use stickers, acrylic and plywood as panels! Because it is difficult to completely seal the furniture with this kind of surface material, all moldy furniture usually happens at the corner!

There is a very simple way to tell whether to use solid wood skin: look at the grain, look at the color and look at the pores;

Solid wood skin is irregular, and there will never be two identical pieces of wood skin; There is also a veneer that is small, and if you look closely, there will be traces of splicing, while paper and plywood are usually a large piece; In addition, because there are many fiber ducts in the trees, there must be some holes in the solid wood skin. Paper, plywood, etc. They are all made by machines, with uniform lines and no conduits; Color-because of weather, sunshine and other reasons, two pieces of wood skin will have color difference. Although a good painter can fix the color, it will be a little different if you look closely, and the color of paper and plywood is usually the same!

Second, the cotton-padded clothes are moldy

There are two main reasons why cotton-padded clothes are moldy, one is damp, and the other is unclean. Therefore, in order to keep cotton-padded clothes from mildew when they are collected, they should always be kept dry and clean.

Before you collect it, you must take off your dirty cotton-padded clothes and wash them. If only the collar and cuffs are dirty, you can dip them in water with a brush. All worn cotton-padded clothes must be put away and exposed to the sun, heated and then slapped to remove dust, eggs, bacteria and so on. Take it out of the clothes, then put it in the cupboard after the hot air is exhausted.

Before storing cotton-padded clothes, it is best to dry them in the sun, and then wash or wipe them clean. Put sanitary balls and charcoal at the four corners of the box to prevent insects and absorb moisture. It is best to put clean white paper around and at the bottom. Don't put the box against the wall, let alone underground, but in a ventilated and dry place. In the rainy season, take out the cotton-padded clothes and air them several times to keep them dry. If this is done, the collected cotton-padded clothes will not be moldy and insect-free.

Third, the flour is moldy.

The reason why flour is moldy is >>

Question 8: What do you mean by moldy? When a person encounters several unlucky things in a row, he will feel "bad" and "bad".

Sunbathing won't make you lucky. Luck is a problem in Xingtai. What I'm talking about is that your heart should bask in the sun, and all psychological discomfort and bad luck will disappear. When you are in a good mood, luck will naturally come. See who has a bitter face all day long and can have good luck. Smile more, take a deep breath and open your mind a little. There is an old saying: misfortune is a blessing, and misfortune is a blessing!

There is no eternal misfortune, it is a problem in your heart,

Question 9: Why are things at home always moldy? First of all, you can be sure that things are moldy, which means that the air in your room is too humid, which means that the air humidity in your room is relatively high, which may be a problem that you can't get in touch with the sun in your room. You can try to open the window for ventilation. If you live in the south, the situation will be even worse. I think the situation you mentioned is still very serious. Please see if the neighbors on the same floor have what you said. If not, there is something wrong with your decoration materials. The current construction team is really unscrupulous.

Problem 10: Moldy. What is the reason for this phenomenon? It is because the dark, humid and unventilated environment is especially suitable for the growth and reproduction of mold.