What is the difference between dry powder putty and finished putty?

Dry powder putty is an optimal alternative to ordinary putty, and its key raw materials are imported materials, and dry powder putty and ordinary putty have obvious advantages and disadvantages.

Features of dry powder putty:

1. Strong adhesion, high bonding strength, certain toughness, good air permeability, no chalking phenomenon after moisture, and strong water resistance.

2. There will be no cracking, peeling, falling off and other phenomena for a long time.

3. The wall feels delicate, soft and has a good texture.

4. After the wall is polluted, it can be scrubbed directly, and there is no need to remove the wall when painting the wall again.

5. The materials used are environmentally friendly, and do not contain toxic substances such as benzene, xylene, and formaldehyde.

Ordinary putty features:

1. Poor adhesion, low bonding strength, no toughness, and chalking will occur soon after moisture.

2. Cracking, peeling, falling off and other phenomena in a short period of time.

3. When painting the wall again, the original putty needs to be removed, which is laborious and pollutes the environment.

4. The surface is not delicate enough and the texture is poor.

5. The materials used generally contain toxic substances.

Tips: dry powder putty is alkaline, after drying is weak alkali, if it is not dry on the latex paint, the primer is not alkali-resistant, it is easy to appear latex paint flowering, so in the winter to use dry powder putty, it is recommended to use latex paint alkali-resistant primer; The finished putty is neutral and not easy to appear, but it is easy to chalver, crack and mildew after 2 years.

Self-prepared putty: mainly used glue and other chemical materials, so the environmental performance is not high.

Finished putty: The binder used is a natural resin, so it is healthier and more environmentally friendly.

Construction process. Self-matching putty: The material of self-matching putty is not easy to grasp, and if there is more glue, it is difficult to apply in batches, so that the coating effect is uneven; If there is less glue, the putty will not be strong enough to cause the corner line to be not crisp.

Finished putty: Because it is a standardized production, it can ensure the quality of construction batch coating.

Construction environment. Self-prepared putty: Glue, gypsum powder and other materials need to be prepared on site, so it is easy to stain the house.

Finished putty: The finished product is directly on the wall, without the need for on-site preparation, so it is easy to keep the room tidy.

Construction effect. Self-prepared putty: Because the preparation material contains organic matter, it is easy to produce mildew spots on the wall.

Finished putty: The finished putty has a high resin content, so there is no need to absorb resin from the paint to supplement the shortage, which ensures the resin content of the coating, so that the paint maintains its due gloss, and because of the strong adhesion of the resin component, it can be closely combined with the paint to prevent cracking caused by blistering on the wall.

Disbursement of expenses. Self-prepared putty: the cost of preparation materials is about 2 yuan square meters, and there is also a need for labor costs for deployment.

Finished putty: the material cost is about 4 yuan square meters, and there is no need for manual deployment. However, because it has moisture-proof, alkali-resistant, waterproof performance and is neutral, it can largely replace the function of primer, and it is more economical than the self-prepared interior wall putty paint, so it is not very expensive to calculate carefully.

It is more convenient to use the finished putty, because the dry powder putty needs to be added if it is used!

Putty powder is made by using an appropriate amount of white cement, old powder and talcum powder.

In order to improve the adhesion of putty powder, some manufacturers will add rubber powder to putty powder, but rubber powder contains many chemicals, which will release formaldehyde after use, which is the main formaldehyde in putty powder.

Water-resistant putty: 1 ton of calcium carbonate, 10 kg of sodium carboxymethyl cellulose (CMC), 8 kg of pregelatinized starch Put it in a blender and stir for 10-15 minutes, this formula is rarely used now.

Water-resistant putty for interior walls: heavy calcium (or talcum powder) 70% 80%, gray calcium (lime powder) 20% 30%, plus an appropriate amount of cellulose.

Exterior wall water-resistant putty: stone powder + gray calcium + cement + cellulose + rubber powder (EVA, PVA).

Putty powder selection tips:

1. When buying putty powder, you should choose putty powder with delicate texture and white color, and use this kind of putty powder to paint the wall, the wall will look more delicate and smooth, and at the same time, it can also reduce the amount of paint. However, in order to reduce costs, some manufacturers produce putty powder with rough texture and even toxic substances, which will have adverse effects on human health after use.

2. In the process of purchasing putty powder, you should also check the formula of putty powder, the most advanced putty powder in the production process, a variety of polymers are used, and the putty powder produced has strong adhesion. However, the poor quality putty powder is made of double fly powder and rubber powder, which is easy to peel and crack after use.

3. When buying putty powder, you should choose the putty powder produced by big brand manufacturers, because the quality of putty powder produced by big brand manufacturers is more guaranteed, and the ratio of putty powder produced by small workshops is prone to errors, resulting in quality problems in the use of putty powder.

The main components of putty powder are talcum powder and glue.

Putty is a substrate used for wall repair and leveling, which lays a good foundation for the next step of decoration (painting and wallpaper). Putty is divided into two types: interior wall and exterior wall, and the exterior wall putty should resist wind and sun, so it has high gelatinity, high strength, and slightly lower environmental protection index. The comprehensive index of interior wall putty is good, healthy and environmentally friendly, so the interior wall is not used externally, and the exterior wall is not used internally.

Usually putty is gypsum or cement-based, so that the surface is rough and it is easier to bond firmly. However, during construction, it is still necessary to apply a layer of interface agent on the base layer to seal the base layer and improve the adhesion of the wall, so that the putty can be better bonded to the base surface.

Additives include thickeners, water retention agents, etc. Thickeners and water-retaining agents play the role of water retention, improve storage and construction performance, and cellulose is generally used. Antifreeze is mainly used to improve the storage stability of putty at low temperature, and slip agents and water reducers are generally used in high-grade putty to improve the construction performance of putty.

Precautions for putty powder:

1. When storing, pay attention to waterproof and moisture-proof. The storage period is six months.

2. The construction temperature is above 0, and the putty powder should be used within 4-5 hours after being adjusted into a paste to avoid deterioration for too long.

3. Putty powder should not be used on the same construction surface with other putty, so as not to cause chemical reaction and color difference.

The above content reference:

In house decoration, putty powder is an indispensable material, which can not only protect the wall, but also play a certain decorative role. There are many types of putty powder on the market, such as finished putty, ordinary putty, etc., which are different and have great differences in construction and other aspects. So what is the difference between finished putty and ordinary putty?

From the construction point of view, the finished putty is simple to build, and it can be used only after referring to the proportion and water mixing, while the ordinary putty needs to add lime powder and other materials for redeployment, which is more time-consuming and laborious; From the perspective of hardness, the finished putty has high hardness, good waterproofness, and good wear resistance after drying, while ordinary putty has poor waterproofness and is prone to scratches and powder dropping after drying.

What to pay attention to in putty construction.

1. The grassroots should be cleaned.

Before construction, the stains on the wall should be removed, and if there are uneven places, such as pores, hemp surfaces, bulges, etc., they should be leveled or filled first. If the base surface is a precast concrete floor slab, it should be brushed in advance with a wire brush to remove the dust and sand particles on the surface, and keep the base surface clean.

2. The base layer should be dry.

Before scraping putty, make sure that the base surface is dry, and if there is still moisture on the surface, wait for the moisture to dry before proceeding. If there is still moisture on the base surface, scrape the putty immediately, which will directly affect the construction effect of the putty.

3. The Qing New Year putty should be scraped and smoothed.

When scraping putty, each part should be scraped flat, if there is unevenness, it needs to be smoothed, so as to ensure the flatness of the wall, in order to ensure that the texture of the wall is consistent. If the putty is uneven, it will directly affect the decorative effect of the wall.

Difference 1: 1. Putty powder is a kind of building decoration material, and the main components are talcum powder and glue. Putty is divided into oily putty and water-based putty, which are used for paint and latex paint construction respectively.

2. Dry powder wall paint is also a powder coating, which can only be used to paint the wall.

Difference 2: 1. The main purpose of putty powder is to fill the pores of the construction surface and correct the curve deviation of the construction surface, so as to lay a good foundation for obtaining a uniform and smooth paint surface.

2. The wall surface constructed with dry powder wall paint is composed of a waterproof material from bottom to surface. Outside the wall, only the jujube enters the water, and the dry powder wall paint is not affected, the ash is not removed, the dust is not peeled, and the phenomenon of peeling and drumming is not removed.

Putty is one of the indispensable products before paint painting, mainly for decorative role, is a thick paste coating. There are many kinds of putty on the market, among which finished putty and ordinary putty are deeply loved by the public, so what are the differences between finished putty and ordinary putty? Let's take a look at the relevant knowledge.

1. Construction. The finished putty only needs to be added to the water in proportion to the wall during construction, and the ordinary putty needs to be artificially modulated with lime powder, cooked rubber powder, glue and other materials, many black-hearted decoration companies use cheap 801 glue for their own selfish interests, and most of the glue contains a large amount of harmful substances such as formaldehyde and benzene, which is one of the larger sources of pollution in home decoration.

2. Hardness. The hardness of the finished putty is high, and even if you use your hand to buckle on the wall after drying, you can't damage the wall. The texture of ordinary putty powder putty is loose, and the powder will fall off if you gently rub it on the wall with your hand after scraping and drying.

3. Waterproof performance.

The finished putty has excellent waterproof performance, while the ordinary putty has poor waterproof and water resistance, and if the environment is wet, it is easy to cause the wall to appear loose, pulverized, peeling, mildew, etc., and even cause the latex paint base to crack, hollow and fall off.

4. Surface. After the finished putty is finished, the wall feels smooth and delicate, which is conducive to the later application of latex paint and makes the overall effect look more classy; The ordinary putty powder is rough and grainy.

5. Cost-effective.

Ordinary putty is cheap, about 20 yuan square, and the price of finished putty is relatively high, about 35 yuan per denier square, but ordinary putty has a short service life and is prone to loosening, chalking and other phenomena; The life of the finished putty is very long, if you want to paint the wall again after a few years, you don't need to shovel the red brick layer, you can directly scrape the original latex paint and paint it directly.