What is the main content of latex paint? Why?

Latex paint: Latex paint, also known as synthetic resin latex paint, is an organic paint, which is a water-based paint based on synthetic resin emulsion and added with pigments, fillers and various additives. According to different raw materials, latex paints mainly include polyvinyl acetate latex paint, ethylene-propylene latex paint, pure acrylic latex paint, styrene-acrylic latex paint and other varieties; According to the different application environment of products, it can be divided into two types: interior wall latex paint and exterior wall latex paint. According to the gloss effect of decoration, it can be divided into matte, matte, semi-gloss, mercerization and gloss type.

Supplement: Coatings are divided into three categories: inorganic coatings, organic coatings and organic-inorganic composite coatings. Among them, organic coatings are divided into solvent-based, water-soluble and latex coatings: paint is the common name of oily coatings, and organic solvents are used as dispersion media; Water-based coatings use water as dispersion medium. According to different dispersion methods, waterborne coatings can be divided into water solubility and water dispersibility. Latex paint is a water-dispersible coating based on synthetic resin emulsion, which is refined by grinding and dispersing fillers and adding various additives. According to the characteristics and application scope, latex paint can be divided into indoor latex paint, outdoor latex paint and other special coatings. [Edit this paragraph] The classification of latex paint is based on characteristics.

① Water-soluble latex paint for interior wall

Water-soluble interior wall latex paint is pollution-free, non-toxic and has no fire hazard. Easy to brush and dry, the paint film has good water resistance and scrub resistance, and the color is soft. Water-soluble latex paint for interior wall uses water as dispersion medium, which has no environmental pollution caused by toxic gas of organic solvent, good air permeability, and avoids the bubble defect of coating film caused by temperature difference between inside and outside the coating film, and is suitable for painting new walls that are not completely dried.

② water-soluble coating

Water-soluble coatings are cheap, decorative and protective. The production process is simple, the used resources are abundant, the raw materials are easily available, the scrubbing resistance is not as good as that of latex paint, generally less than 10 times, and it is easy to peel, fall off, crack and blister, and the weather resistance is poor. It occupies a large share in the rural market.

③ Solvent-based latex paint for interior wall

Solvent-based interior wall latex paint takes polymer synthetic resin as the main film-forming substance, and organic solvent must be used as diluent. The coating is made by mixing and grinding a certain amount of pigments, fillers and additives. It is a volatile coating, and its price is higher than that of water-soluble interior wall latex paint and water-soluble coating. Therefore, the use of flammable solvents in such coatings is likely to cause fire during construction. However, in low-temperature construction, the performance is better than that of water-soluble interior wall latex paint and water-soluble coating, with good weather resistance and pollution resistance, and good thickness, luster, water resistance and alkali resistance. However, it is easy to peel, blister and fall off when construction is carried out on the wet base.

④ Universal latex paint

General latex paint represents a large category of general latex paint, which is suitable for different consumption levels. It is the product with the largest market share at present. The most common is matte latex paint, which has a white and dull effect. When brushing, ensure that the wall is clean and tidy, with certain brush resistance and good hiding power. Typical is silk wall paint, which feels as smooth, delicate and comfortable as silk satin. You can see the luster on the side wall, but the front is not obvious. This latex paint has rough walls. If the old wall is renovated, the base material will be slightly uneven, and it will show different luster after polishing, so the construction requirements are higher, and it is required to be very meticulous in construction to show its elegant, delicate and exquisite effect.

⑤ antifouling latex paint

Anti-fouling latex paint is a kind of latex paint with certain anti-fouling function, which can easily wipe off some water-soluble stains, such as water-based pens, handprints and pencils. And some oil stains can also be wiped off with cleaning agents, but some chemicals, such as chemical ink, can not be wiped back to the original analysis, but the antifouling effect is better, not absolute antifouling.

⑥ Antibacterial latex paint

People's pursuit of healthy and clean ecological living environment is getting stronger and stronger, and more and more attention is paid to products with antibacterial function. Antibacterial latex paint not only has fine and plump coating, water resistance, mildew resistance and weather resistance, but also has antibacterial function. Its appearance promoted the development of architectural coatings. At present, the ideal antibacterial materials are inorganic antibacterial agents, including metal ion inorganic antibacterial agents and oxide antibacterial agents, which can kill and inhibit common microorganisms, Staphylococcus aureus, Escherichia coli, Candida albicans, yeast and mold. Choosing antibacterial latex paint can improve the living environment to some extent.

⑦ Tertiary carbon paint

The binder of tertiary carbon paint is a polymer based on tertiary ethylene carbonate. Because there is a huge multi-branched tertiary carbon group on tertiary ethylene carbonate, which plays a role in protecting the molecular chain of the base material and plasticizing the solvent, the tertiary carbon paint has excellent paint film performance, excellent tolerance, decorative performance, construction performance, environmental protection and health performance, does not contain formaldehyde and has extremely low VOC.

Divide by purpose

A, indoor latex paint series [1]:

Matte paint:

The coating is non-toxic, odorless, high in hiding power, good in washing resistance, strong in adhesion, good in alkali resistance, safe and environmentally friendly, convenient in construction and good in leveling, and is suitable for industrial and mining enterprises, government institutions and schools, residential projects and civil houses.

Semi-matte: This is the main variety of furniture paint at present.

Strong light: This kind of floor paint is used more.

Mercerized coating:

The coating film is smooth, delicate in texture, with silk luster, high hiding power, strong adhesion, excellent antibacterial and mildew-proof performance, excellent water and alkali resistance, washable and durable in luster, and is suitable for hospitals, schools, hotels, restaurants, residential buildings, office buildings and civil residences.

Bright paint:

Pure color, soft luster, tough paint film, strong adhesion, fast drying, mildew resistance, water resistance, good weather resistance and high hiding power are the first choice for various interior wall coatings.

High gloss paint:

It has excellent hiding power, strong and beautiful appearance, bright as porcelain, high adhesion, high mildew and antibacterial properties, washability, durable coating, not easy to peel off, tough and firm, and is an ideal interior wall decoration material for high-end luxury hotels, temples, apartments, residential buildings, office buildings and so on.

Second, the exterior wall latex paint series [2]:

Matte paint:

The product has good weather resistance, ultraviolet resistance, quick drying, tough coating, strong hiding power, mildew resistance, waterproof and fashionable color, and is suitable for exterior wall decoration of restaurants, hospitals, schools, apartments, residential buildings, civil houses, temples and office buildings.

Mercerized coating:

The coating is smooth and smooth, with fine texture, silky luster, good ultraviolet resistance, strong stain resistance and excellent adhesion. It is an ideal external wall decoration material for hotels, apartments, residential buildings, temples, office buildings, commercial buildings and tourist attractions.

Bright paint:

It has high gloss, good ultraviolet resistance, strong adhesion, stain resistance, mildew resistance and algae prevention, and is the most ideal exterior wall decoration material for high-end hotels, apartments, temples, residential buildings, villas and office buildings.

High gloss paint:

Good color retention, anti-pulverization, high weather resistance, strong hiding power, strong adhesion, strong mildew and antibacterial properties, rain erosion resistance, no discoloration, as bright as porcelain. It is an ideal exterior wall facing specially developed for cement-based walls.

Third, other special paints:

High elastic coating:

After cross-linking, the surface of the coating film has excellent crack resistance, excellent elasticity and elongation, and can cover existing or future cracks on the wall surface; It is a noble decorative material for external walls, which has excellent stain resistance and washability, waterproof, moisture-proof, antibacterial, mildew-proof and alkali-resistant.

Colored stone paint:

The paint has strong three-dimensional effect, solemn elegance, elegant appearance, aging resistance, advanced cost and economy, and is suitable for spraying decoration of external wall buildings such as government agencies, hotels, civil houses and public places.

Solid primer:

Super penetration can effectively seal the wall, alkali-resistant mildew-proof coating can effectively protect the wall, and strong adhesion can effectively prevent the top coat from biting and cracking, which is suitable for all kinds of wall foundations.

High gloss waterproof finish:

The coating is as bright as a mirror, anti-aging and pollution-free. Both internal and external walls can be used, stains can be cleaned as soon as they are washed, and the scrubbing resistance can reach more than 10000 times. Suitable for kitchens, bathrooms, baths and other places that are easily polluted. [Edit this paragraph] The purchase of latex paint in decoration, as long as it is related to the wall, everyone can't do without latex paint. Latex paint is a kind of paint, which is generally divided into water-based paint and oily paint. Latex paint is a water-based coating. It is mainly used for painting the interior and exterior walls of families, and it is the most contact with consumers. Latex paint on the market now is really dazzling, with different brands, specifications, grades, functions and colors.

In terms of price, the 5-liter package ranges from tens of yuan to four or five hundred yuan; Functionally, latex paint is more "full effect" from scrubbing resistance, covering cracks to mildew prevention and antibacterial; In terms of color, red, orange, yellow, green, blue and purple, whatever color you want, the palette can help you adjust it. For consumers, buying or painting is very troublesome. Quality, environmental protection and price should be taken into account. Here, Chengdu Ruili Jiazhuang puts forward the following suggestions for everyone to choose and buy. I hope everyone can feel more at ease when purchasing latex paint and feel more comfortable during construction.

Looking at the purchase of latex paint in the market through comparative experiments, consumers may be most concerned about environmental protection and price. The most important environmental protection index of latex paint is the content of volatile organic compounds (VOC). According to the national standard, the VOC content in each liter of latex paint should not exceed 200 grams. In order to facilitate consumers to buy latex paint, recently, China Consumers Association, in conjunction with consumers' associations in Beijing, Shanghai, Guangdong and Sichuan, conducted a comparative test on 83 kinds of latex paint products for interior walls.

Brand paint is more environmentally friendly. From the published results, the environmental protection performance of latex paint basically meets the standard, and the volatile organic compounds (VOC) and soluble heavy metals contents of all samples meet the national standards. Only one sample has formaldehyde content exceeding the upper limit of national standard. Because the 83 samples used in the experiment were all purchased from 19 building materials markets or supermarkets in Beijing, Shanghai, Chengdu and Guangzhou, covering major international and domestic well-known brands and local brands, as well as products of the same brand with different price points. Therefore, consumers who pay attention to environmental protection can give priority to buying brand latex paint. The higher the price, the better the performance. According to the test results, the price problem that consumers care about is not that the higher the price, the better the performance index. The price of latex paint varies greatly in the market, with 83 samples ranging from 7 yuan to 1 17 yuan per liter. Compared with the highest-priced samples per liter 1 17 yuan and the samples with a price of 63.5 yuan per liter, there is no big difference in the test results of environmental protection, hiding power, pollution resistance and mildew resistance. However, there are some advantages and disadvantages in the comparison of performance indicators between the two commodities with large unit prices.

When purchasing this kind of products, we should take good cost performance as the purchasing standard. Consumers should choose latex paint with corresponding characteristics according to the different functions of the room. For example, it is best to choose products with good mildew resistance in bathrooms and basements, and products with good stain resistance and scrub resistance in kitchens and bathrooms; Choosing latex paint with certain elasticity is conducive to covering cracks and protecting the decorative effect of walls; Choose a multifunctional product that suits you. In addition, through inspection, it is also found that the properties of coating products are closely related and may even restrict each other. For the popular multifunctional products in the market, the single performance may not be outstanding, but the comprehensive performance is generally good.

Brush construction to avoid three traps!

The coating itself is a semi-finished product. In order to achieve the most perfect final effect, in addition to the quality of the coating itself, construction also plays a key role. According to Mr. Huang Zuozhao, the owner of Ruili Decoration Enterprise in Chengdu, Sichuan, who has been engaged in home improvement for a long time, choosing a formal and reputable home improvement company certainly has quality assurance. However, some "road guerrillas" can easily make consumers fall into the trap of brushing.

Trap low price temptation!

Now the price quoted by oil workers is getting lower and lower. Some oil workers quote per square meter 16 yuan to 18 yuan (including paint price and salary), but if painting is simple, it is as low as 6 yuan to 7 yuan. Mr. Huang Zuozhao reminded consumers not to trust low quotations. If you really paint at these prices, sometimes even the cost of paint is not enough. Normal paint quotation decoration companies are generally around 30 yuan (including paint prices). The low-price trap is generally to lure consumers through low prices, and then to make up for the loss of low prices by taking kickbacks, finding various reasons to advance wages, and then sharing them. Most importantly, low price does not guarantee good quality. Chengdu Ruili Jiezhuang Reminder: If consumers only want to deal with the wall, they can find us Ruili to decorate. As long as we are citizens of Chengdu, we can offer the lowest price. In addition, you can also find a manufacturer. Now some paint manufacturers also provide paint value-added services.

Trap two, steal the beam and replace the column!

Latex paint is generally divided into primer and topcoat. If you want to paint the wall, the normal painting process is to do the wall treatment first-scrape putty, and then brush the primer and topcoat. Primer mainly plays the role of sealing and alkali prevention. Now some oil workers like to tamper with the primer. Because the primer will be covered by the topcoat after painting, the owner can't see the effect of the primer at all. Manager Huang encountered a case in which a painter took advantage of the owner's busy work and didn't have time to concentrate on decoration, and replaced the 5 liters of alkali-resistant paint purchased by the owner 240 yuan with the low-end products of 18 liters and 180 yuan. It is difficult for the owner to notice any change in the wall in a short time. In the end, it is the owner who suffers. Chengdu Ruili Decoration Reminder: If the owner is free, he can watch the painter open the bucket during painting construction. Latex paint is difficult to replace after opening.

Trap three, cut corners!

Latex paint is a water-based coating. During construction, a certain proportion of water should be added for dilution. The proportion of water added varies from 10% to 30% according to different paint brands. However, some oil workers deliberately increase the proportion of water in order to save trouble or color, and add more than 50% water at the highest time. The result of mixing water is that the covering ability of latex paint is greatly reduced, which can not cover cracks and protect the wall. Chengdu Ruili home improvement reminder: mixed water is easier to find by visual inspection and touch.

Purchase details determine colorful quality! If you want to choose the most suitable latex paint for house decoration style, there are still many details to pay attention to when purchasing latex paint.

Details 1 First sight, second sight, third sight.

A look is to look at the outer packaging and environmental protection test report. Generally, the front of latex paint will be marked with name, trademark, net content, composition, usage and precautions. Pay attention to the production date and shelf life. The shelf life of various brands of latex paints ranges from 1 to 5 years. Try to buy the latest products. Now the general brand latex paint has environmental protection test report or test sheet. Consumers can learn more about the environmental performance of latex paint by reading the inspection sheet clearly. The test report has standards for the test results of VOC, free formaldehyde and heavy metals. The national standard VOC cannot exceed 200 grams per liter; Free formaldehyde shall not exceed 0. 1g per kilogram.

Second, weigh the weight. Generally speaking, the quality of qualified latex paint, a barrel of 5 liters about 7 kilograms; A barrel 18 liter is about 25 kg. There is also a simple way to lift the paint bucket. Regular brand latex paint can't hear the sound when it is shaken, and it is easy to shake the sound, which proves that the viscosity of latex paint is insufficient.

The third step is to open the can for testing. High-quality latex paint is viscous, milky white liquid, without caking, even after mixing, without peculiar smell. Otherwise, the latex paint has quality problems. You can also apply it evenly on your fingers, and the conjunctiva will dry in a few minutes. The conjunctiva with certain ductility is a safe coating.

Detail 2 colors should be paid attention to in rich colors

Now the color of latex paint is no longer monotonous white, and many consumers are more willing to light up their lives with colorful colors. On the color swatches and paint buckets, the colors seen by consumers are not necessarily the same as the final effect on the wall. Because the color of paint is not only affected by the light, but also by the painting area. When a color is applied to a large area, it usually becomes heavier, so you can choose a slightly lighter color. [Edit this paragraph] A simple appraisal method for the quality of latex paint 1. Leveling performance of coatings. Stir the paint evenly with a wooden stick or spoon, then lift the spoon to a high place and observe the posture of the paint flowing down. If it falls in pieces, the leveling performance is not good. If the coating flows linearly, it shows that the coating has certain leveling performance. Secondly, the coating is mixed with water according to the proportion of the construction manual, and coated on the non-absorbent surface with a hard brush. After drying, the smoother the coating surface, the better the leveling property.

2. The construction performance of the coating. Dilute the paint according to the proportion of the construction manual, brush it on the non-absorbent surface with wool brush, and feel it with your heart. The smoother the handle, the better the construction performance. It should be noted that in some high-grade coatings, manufacturers often add additives to control the coating thickness in order to make the coating achieve good fullness when used on the wall. When these additives are added to the paint, the feeling of "pulling the brush". But whether this means that the construction performance is not good is a matter of opinion.

3. Covering ability of coatings. Find a clean old newspaper and paint it as thin as possible with your fingers where the font size and density are uniform. After drying, observe the blur degree of the font. The more fuzzy the type, the higher the hiding power of the pigment. This method is more suitable for the comparison of two different coatings.

4. Determination of PVC content in coatings. PVC refers to the percentage of powder volume content and latex volume content in coatings. In some cases, the lower the PVC, the better the mechanical properties of the coating. Or find an old newspaper and apply undiluted paint to it according to the general coating thickness. When it is fully dried, fold the newspaper slowly, carefully observe the change of the paint surface, stop folding when there is a slight crack on the paint surface, and record the approximate angle of newspaper folding at this time. The smaller the internal angle, the lower the PVC and the better the mechanical properties. Secondly, the coating is evenly coated on the non-absorbent base surface, such as glass. After completely drying, scrape the film with nails and observe the state of its fragments. If it is powder, it means that its PVC is high.

5. Scrubbing resistance of the coating. Dilute the coating according to the proportion of the construction manual, apply it on a solid base surface, maintain it normally for more than a week, and gently wipe it with a dark wet towel. Before the obvious white mark appears on the towel, the more times you wipe it, the better the washability of the coating. If it is low-grade engineering paint, it needs to be maintained for a longer time.

The above information is compiled according to what we have at present. Omission is inevitable, please correct me.

In addition, it should be pointed out that the above methods can only be used as a reference, but not as a practical basis for judging the quality of coatings. To make further judgment, more accurate and objective laboratory tests are needed. [Edit this paragraph] How to calculate the painting area of latex paint before painting needs to roughly estimate how much paint is needed by calculating the painting area to avoid unnecessary waste.

When painting exterior walls, a building often needs painting on four sides, but because of doors and windows, we often don't need to paint the entire area of the four walls, just subtract the area of the doors and windows from the area of the four walls, which is the actual area we need to paint. Generally, we set the proportion of doors and windows to the total area as 20% (accumulated by the practical experience of Shuang Hu Decoration Engineering Company for reference only), so the painting area of the external wall can be estimated as (the total area of four walls × 0).

When painting the interior wall, a standard square room has a roof in addition to four sides, so it needs to paint five sides, and these five sides have doors and windows more or less, so the door and window area should be subtracted, that is, (length × width+length× height ×2+ width× height ×2- door and window area). In general, the calculation results of the above methods are all about 3.5 times of the occupied area (the data accumulated by the practical experience of Shuanghu Decoration Engineering Company is for reference only), so (length× width× 3.5) can be used to estimate the painted area of the interior wall in actual use. [Edit this paragraph] Latex paint construction interior wall latex paint is one of the most widely used decorative materials in room decoration at present. It has the advantages of convenient construction, strong hiding power, rich colors and scrub resistance. Proper collocation and guaranteed quality can provide a warm environment for families. However, in actual construction, some problems are easy to bring trouble to customers. Let's talk about how to control the problems in construction.

Common problems in construction:

First, the wall cracks: This phenomenon is the most common, and the specific reasons depend on the situation. If it is GRC light partition wall, crack prevention treatment should be done at the joint. Generally, fiberglass cloth or kraft paper is used, and the partition itself is prone to small cracks. Therefore, in order to ensure as few cracks as possible, it is best to stick glass fiber cloth or bean bag cloth everywhere in the house. In the case of load-bearing walls or solid walls, the reason for cracking may be that the construction putty is too thick or the interval is short, and the putty is not dry.

2. Uneven wall color: mainly because of different colors, the grassroots has not been handled well. This situation must be covered by scraping putty or brushing primer once. In addition, when purchasing materials, we should pay attention to the same manufacturer, the same variety and the same batch number, otherwise there will be color difference.

Third, the surface is rough: the main reason is that the grass-roots treatment is not clean, the brush has sand, debris or the operating environment is not clean. Preventive measures include cleaning the basic treatment, cleaning brushes and dust-proof environment.

4. Peeling: The main reason is that the foundation is too smooth or greasy. The preventive measure is to clean the bristles of the base with a steel brush, and the oil stain is decontaminated with a solvent.

Correct construction methods and precautions:

Before the construction of latex paint, all the shells and cracks on the wall surface should be removed and filled with fillers to remove all the residual pulp, garbage and oil stains on the wall surface. The large area of the external wall should be treated by frame. Grind the concave-convex part and rough surface, then rinse the wall surface, and brush it after it is completely dry. Before using the roller, be sure to brush the parts that the roller can't reach, and then roll them on a large area after 2~3 hours. Rollers should be of high quality. During construction, apply primer first, and then finish painting after the primer is completely dried for about 6 hours. Avoid construction in rainy and foggy weather. Generally, the construction is best under the conditions of temperature of 25 degrees Celsius and humidity of 50%. Before painting and drying, the coating must be protected from rain and dust pollution. Note that the wall temperature below 10 degrees Celsius is not suitable for construction. In the secondary decoration, the original coating must be removed before the latex paint is completed. Then mix with Shuangfei powder and cooked rubber powder to make the base material. Then brush latex paint, and the surface layer needs to be brushed 2 to 3 times.

In terms of construction, the batch of putty on the wall should be made of white old powder, white cement, water, chemical pulp and 80 1 building glue. When mixing, first melt the white cement with a small amount of water, and then add a proper amount of 80 1 glue, chemical paste and old powder in turn, and stir to a proper concentration. Quality requirements should be smooth and smooth, and there should be no capillary holes. The inspection method can be observed from the four corners of the wall with light bulbs, and it can be seen at a glance whether the brush is smooth or not. After the putty is approved, it should be completely dried, coated with wall sealing primer matching with latex paint, and then coated with topcoat. Both primer and topcoat can be slightly thinner to avoid leaving brush marks. Every time you paint, let it dry thoroughly before painting. In addition, if there is paint construction at the same time, the latex paint should be approved in the old powder, and then brushed after the paint is completed, so as to avoid unnecessary losses caused by toluene volatilized from the paint. [Edit this paragraph] Problems that should be paid attention to in the development of coating enterprises 1. The price war should not be carried out blindly. It is unwise for enterprises to attract the market by lowering the price of products. It is tantamount to trying to expand the market at the expense of interests, and it is undoubtedly "drinking poison to quench thirst."

Second, enterprises should improve the coordination of their internal structure, improve the work efficiency of various departments, and maximize the unity of enterprises from top to bottom.

Third, adjust the structure of human resources and cultivate the diversified development of the skills of grass-roots employees. Lay off unqualified and low-quality employees.

Fourth, strengthen the communication between manufacturers and distributors, so as to seek the approval of distributors.