Many people don't know the importance of putty powder, which is also divided into outdoor and indoor. putty powder is a common decoration building material, but when it comes to buying, it is the first time for many consumers. Let's look at the importance of putty powder.
The importance of putty powder 1 putty powder is an essential decorative material in decoration. Painting the wall with putty powder can keep the feelings smooth and even, which is more convenient for decoration and construction in the future.
The importance of wall putty;
Putty is an important supporting material in the process of architectural painting, which has special properties of connecting base and coating. It can provide a flat substrate for coating, which plays an important role in improving rigid substrate and flexible coating.
The important role of putty:
Putty is an important supporting material in the process of architectural painting. Relevant research shows that 60% of coating failure is caused by the quality of putty, not coating. In the whole painting process, putty plays an important role in:
Eliminate the surface defects of the coating base, improve the smoothness of the base, and play a bonding transition role between the base and the application. Due to the coating process of wall, putty layer and coating film, and the change of environmental temperature, the deformation varies greatly with different deformation coefficients, which will inevitably lead to stress concentration. This is the putty layer in the three-layer painting. With its own elasticity, it undertakes the task of eliminating stress concentration, resists cracking at the grass-roots level and effectively prevents wall peeling.
The above mainly introduces the importance of putty, hoping to help everyone!
The importance of putty powder II. What is the function of putty powder?
1, beautification function
In painting engineering, users require the wall to be not only flat, but also smooth and meticulous. In particular, some coatings have higher requirements for the flatness of walls. To improve the smoothness, it is necessary to improve the performance of putty base.
2. Overcome the cracks in the tortoise
On the surface of buildings, especially on the external walls, there are often small cracks on the surface caused by cement shrinkage, which are turtle-backed. Therefore, turtle cracks often lead to coating shelling and cracking, and even cause wall leakage. Therefore, the self-cracking and crack resistance of putty layer are the most important indicators of putty quality, and also the focus of technical development of putty manufacturers.
3. Filling function
Smoothness is the most basic requirement of painting, and it is filling. During construction, there are many uneven walls. For example, the roughness of the cement mortar surface, the unevenness of some walls, or the undulating shape of the ceiling under the light have a negative impact on the beauty of the building. So putty powder solves this problem very well.
Second, how to mix the putty powder?
1. Before mixing, prepare a container suitable for electric mixing.
2. After washing, pour putty powder and water into the container according to the ratio of 1:0.5, and then stir.
3. In order to ensure uniform mixing, use a low-speed and high-power electric mixer to mix them evenly.
4. When mixing, putty powder should not be too dry. If it is too dry, the internal additives will not dissolve well and the adhesion will be affected.
5. Mix the putty powder and let it stand 15 to 20 minutes. At this point, the additives in putty powder can be fully dissolved.
Third, how to use putty powder?
1. The main components of putty powder are talcum powder and glue. The theoretical consumption value of putty powder is per square meter 1 ~ 1.5 kg.
2. Mixing: the amount of water added shall be subject to the construction consistency. After stirring evenly, leave it for 10 minute, and use it after stirring again.
3. Surface treatment: the wall is smooth or new building materials, such as gypsum, partition board, polystyrene board, paper gypsum board, etc. , need to be treated with interfacial agent.
4. leveling: putty has high strength and should be leveled with a scraper when it is semi-dry.
5. Storage: It should be stored in a cool and dry place.
4. What are the precautions when using putty powder?
1. In order to make the overall wall effect better, putty powder can be scraped several times to make the wall smoother.
2. If the putty scraped out at ordinary times is still in a semi-dry state, it can be leveled with tools. If it has solidified, it can be leveled with emery cloth.
3, pay attention to waterproof and moistureproof when saving. The storage period is six months.
4. When the construction temperature is above 0℃, putty powder should be mixed into paste within 4-5 hours before use to avoid loud deterioration due to too long time.
5, putty powder can't be used with other putty in the same construction surface, so as not to cause chemical reaction and color difference.
Importance of putty powder 3 Does putty powder have formaldehyde?
The putty powder itself does not contain formaldehyde, but when it is used, due to engineering needs, a proper amount of glue will be added to it to improve its bonding ability, and this mixed putty powder contains a certain amount of formaldehyde. As for the formaldehyde content, it depends on the type of glue used. If it is a good quality glue, the formaldehyde content will be relatively low, which has little impact on human health. However, if the quality of glue is not good, the formaldehyde content will be higher, which will have a certain impact on human health.
Matters needing attention in scraping wall putty
1, when the wall surface is treated at the grass-roots level, if there is not too much skin on the surface of the grass-roots level, there is no need to do overall treatment, and you can choose local leveling. At the same time, after the wall is leveled, it is necessary to brush the interface agent, which can protect the wall base well.
2. When scraping putty, you should not scrape it casually, at least twice, and every corner should be scraped clean when scraping to the first time 1 time, without any omission. Scrape for the first time 1 time, and wait until it is completely dry before scraping for the second time.
3. For wall putty, choose the performance of the product. If the quality is good, it can completely meet the construction requirements. However, if it is poor quality cooked rubber powder, the wall is prone to mildew after construction.
4. After scraping the putty, you can brush the latex paint on the wall. When brushing the latex paint, you need to carefully calculate the specific dosage. If it is white latex paint, you'd better brush it twice.
1. Does putty powder contain formaldehyde?
In general, putty powder does not contain formaldehyde. Building putty includes ordinary putty and water-resistant putty. Ordinary putty is basically composed of heavy calcium powder and glue, while calcium powder is composed of calcium carbonate, which means that it does not produce formaldehyde; Water-resistant putty consists of lime calcium powder and cement, and there is no formaldehyde.
Second, how to choose qualified putty powder
1. In the process of buying putty powder, don't trust any advertisement easily, and everything is subject to the test report. Therefore, it is necessary to ask the merchants for the product certificate, national testing standards, and whether there is an approved testing mark. The putty powder needs to be based on environmental protection to avoid releasing harmful gases in the later stage and affecting the physical and mental health of residents.
2. It is difficult to see the quality of putty powder only with naked eyes, and it must be verified by simple methods. It can be observed from the samples of putty powder that the quality of putty powder is good if it can't be scraped with nails and washed off with water. On the contrary, it needs careful consideration, which is related to the later residence.
Although the price is not the only factor to buy putty powder, it is also a little attention. After all, controlling the budget is not a simple matter. So, don't buy it right away, and then go to several greasy powder specialty stores to see if the price gap between products with the same brand and quality is too big, and then choose the right price.