What are the requirements for pigments in architectural coatings

Pigment is a kind of insoluble water, solvent and film-forming substances of fine powder, can be evenly dispersed in the coating medium, when the coating film can form a color coating, not only can make the coating have a certain covering ability and give the coating color, but also improve the strength, wear resistance, weather resistance and other physical properties of the coating film itself.

As a pigment for architectural coatings, it is generally required to have good tinting strength and hiding power, high dispersion, bright color, stability to light, good weather resistance and moderate chemical corrosion resistance.

There are many varieties of pigments, which can be divided into two categories: organic pigments and inorganic pigments according to their chemical composition; According to its **, it can be divided into natural pigments and artificial pigments; According to the different functions it plays, it can be divided into coloring pigments and physique pigments.

Answer]: A This question examines the classification, basic properties and uses of commonly used building materials. Exterior paints:

Good decoration, good water resistance, good weather resistance, good pollution resistance, easy to grind in construction and maintenance; Interior wall coatings: good decoration, good blending, alkali resistance, water resistance and chalking resistance, good air permeability, easy construction and maintenance; Ground coating: good alkali resistance, good water resistance, good wear resistance, good impact resistance, good bonding performance with cement mortar, easy construction and maintenance.

Answer]: a1) The exterior wall paint bench mainly plays the role of decorating and protecting the exterior wall, and requires good decorative mold cleaning, water resistance, weather resistance, pollution resistance and easy construction and maintenance. Option D is wrong.

2) The requirements for the base jujube of interior wall paint are: rich color, delicate and harmonious; Good alkali resistance, water resistance and chalking resistance; Good breathability; Easy to apply and easy to reapply. Option B is wrong.

3) The main function of floor coating is to decorate and protect the indoor floor. In order to obtain good decorative effect and use performance, the basic requirements for ground coatings are: good alkali resistance; Good water resistance; Good abrasion resistance; Good impact resistance; It has good bonding performance with cement mortar; It is easy to apply and easy to repaint.

Option C is wrong.

Therefore, option A is correct.

1. Coating: In China, the traditional name is paint.

2. The authoritative book "Coating Technology" in China's coating industry is defined as follows: "Coating is a material, which can be coated on the surface of objects with different construction techniques to form a solid film with firm adhesion, certain strength and continuity. The film formed in this way is commonly known as a coating film, also known as a paint film or coating.

3. Coatings include water-based coating wheel refueling, solvent-based coatings (also known as paints), powder coatings and other categories.

4. Coatings are generally composed of four basic components: film-forming substances (resins), pigments (including physical pigments), solvents and additives.

Introduction: With the improvement of living standards, people's requirements for home decoration are getting higher and higher, closely followed by the successive development of various house decoration. Below, let's take a look at the value of architectural coatings in house decoration.

1. What is architectural coating?

Architectural coatings belong to the category of coatings, and coatings refer to the general term of materials that can reflect on the surface of objects and thus form a tough protective film. Architectural coatings are widely used in construction, and Dou Buxin is one of the important categories. Architectural coatings generally act on the inside and outside of the wall house, as well as the roof and the ground, and special coatings are also used in the bathroom!

Second, the role of architectural coatings

Architectural coatings integrate decorative functions, protection functions and habitability improvement functions. The multiple functions make it an incomparable advantage over other materials in house decoration!

The decorative function mainly includes the design of plane color, pattern and light color, however, because of the different proportions of various functions in use, the effect of its decorative function on the appearance of the building is also different. But it must fit into the shape of the building itself;

The protection function mainly refers to reducing the degree of influence and damage of the building by external factors, the degree of protection of different architectural coatings to the building is not the same, and the requirements of different types of buildings for the protection function are also different, for example, the coating required by the inside of the house and the outside of the house is very different, and some buildings have special requirements for fireproof, heat insulation and other functions.

The habitability improvement function is mainly used to change the indoor living environment, such as changing the sound insulation between houses, empty wheels, and sound absorption. Maximizing the sound insulation between houses is conducive to promoting resting and sleeping.

Third, the development trend and status quo of architectural coatings

Architectural coatings are the most inexpensive and easy-to-use products in construction, with obvious use effects and high added value, and are widely used in the construction industry. Today, the construction industry in China has become a pillar industry of the national economy, which has further promoted the development process of China's architectural coatings industry, the demand and production of architectural coatings are rising, and the scale of the industry is also expanding. Therefore, in China, the prospects of the architectural coatings industry are widely optimistic, and there is a good trend of further development!

China's territory is vast, the economic development level of the east and west, the south and the north is extremely unbalanced, and the consumption structure is diversified, which is not conducive to the rapid development of the overall level of China's architectural coatings industry. However, regardless of the size of the enterprise, due to the increasing demand for architectural coatings, the development prospects of large and small enterprises are not the same. Large enterprises have more room for development, and the small construction industry can also move forward steadily!

You can get it for free

Coating, in China, the traditional name is paint. The so-called coating is a continuous film coated on the surface of the object to be protected or decorated, and can form a firm adhesion with the coated object, usually based on resin, oil, or dust emulsion, with the addition of hail or without pigments, fillers, additives, organic solvents or water to prepare a viscous liquid. There are four main functions:

Protect, decorate, disguise defects and other special functions of the product, enhance the value of the product.

Coatings generally consist of four basic components: film-forming substances (resins, emulsions), pigments (including physique pigments), solvents and additives (scrambling aids).

1. Film-forming substances are the main components of coating films, including oils and fats, oil processing products, cellulose derivatives, natural resins, synthetic resins and synthetic emulsions. The film-forming substance also includes some non-volatile reactive diluents, which are the main substances that make the coating firmly adhere to the surface of the coated object to form a continuous film, which is the basis of the coating and determines the basic characteristics of the coating.

2. Additives such as defoamer, leveling agent, etc., and some special functional additives, such as substrate wetting agent, etc. These additives generally do not form films and are added in small quantities, but they play an important role in the process and durability of the binder to form a film.

3. There are generally two kinds of pigments, one is coloring pigments, common titanium dioxide, chrome yellow, etc., and one is physique pigments, which is often said to be fillers, such as calcium carbonate and talcum powder.

4. Solvents include hydrocarbons. Solvents (mineral spirits, kerosene, gasoline, benzene, toluene, xylene, etc.), alcohols, ethers, ketones and esters. The main function of solvents and water is to disperse the film-forming binder to form a viscous liquid.

It helps in the construction and improves some of the properties of the coating film.

There are two main categories of powder coatings: thermoplastic powder coatings and thermoset powder coatings. Thermoplastic powder coatings are composed of components such as thermoplastic resins, pigments, fillers, plasticizers, and stabilizers.

Thermoplastic powder coatings include: polyethylene, polypropylene, polyhall or good ester, polyvinyl chloride, chlorinated polyether, polyamide, cellulose, polyester. Thermosetting powder coatings are composed of thermosetting resins, curing agents, pigments, fillers and additives.

Thermosetting powder coatings include: epoxy resin, polyester, acrylic resin. Powder coating is a completely different form from general paint, it exists in the state of fine powder with micro lead.

Since no solvents are used, it is called powder coating. The main characteristics of powder mass roller coating are: harmless, high efficiency, resource saving and environmental protection.

Better than water-based coatings.

The so-called paint is applied to the surface of the object that is protected or decorated, and can form a continuous film with the coated object to form a firm adhesion, paint and coating basically mean the same thing, such as Chuanxing paint.

Coatings, such as paints, are a general term for a type of liquid or solid material that can be applied to the surface of an object to form a solid coating film with protective decoration or special properties.

Paint is a special main material in home decoration, is coated on the surface of the object with protective properties, decorative properties or other special properties of the coating substance, in the home decoration of the most commonly used coatings are wall paint and wood paint.

In the general home decoration, the expenditure of paint only accounts for about 5% of the entire decoration cost, but accounts for 80% of the entire decoration area, 100% determines the overall decoration effect and living environment, directly affects the health of the family, which shows the special status of paint in home decoration. Therefore, 3A environmental protection paint reminds owners to be very cautious when purchasing paints, so as not to affect their future residence.

There are many types of paints, but there is no unified way to divide them, and there are usually the following classifications:

1. According to the form classification of architectural coatings: (1) liquid coatings (2) powder coatings, etc.;

2. According to the properties of the main film-forming substances, (1) organic Xu material, (2) inorganic coating, (3) organic-inorganic composite coating;

3. According to the state of the coating film, it is classified (1) plane coating (2) colored sand coating (3) multilayer coating;

4. According to the use method of the building: (1) exterior wall material (2) interior wall paint (3) ceiling paint (4) ground paint (5) roof coating;

5. According to the performance of the coating film, it is classified (1) waterproof coating (2) fireproof coating (3) anti-corrosion coating (4) anti-mildew coating (5) insect-proof coating (6) rust coating (7) anti-condensation coating.