Architectural coatings expertise Exterior wall paint wholesale engineers can not be unaware

China Paint Online News Information
and to China Paint Onlinesmall editor to popularize the knowledge of architectural paint time - is the wind and the sun, autumn high air - the paint industry also ushered in its own gold nine silver ten coating season. However, there are still a lot of external wall paint wholesale cooperation Chamber of Commerce on the professional knowledge of architectural coatings do not understand, today's small editor for you to introduce architectural coatings expertise, as the outer wall paint wholesale engineering you can not be unaware.1. What is architectural coatings?
refers to a class of materials applied to the surface of an object that can form a tough protective film. Paints commonly used on building walls, exterior walls, roofs, and floors are referred to as architectural coatings. Architectural coatings are an important category in coatings.2. What is the relationship between paint and paint?
traditional solvent-based paint is referred to as paint, and new water-based paints (especially architectural coatings) are called paints. Early coatings were mainly made of grease and natural resins, so they were called paints, such as raw paint, asphalt paint, insect paint, etc. However, with the progress of science, synthetic resins are widely used as the main raw materials of coatings, to produce solvent-based coatings and water-based coatings, the current technical classification of traditional paints and current coatings collectively referred to as coatings.3. What are the basic components of architectural coatings?
coatings consist of substations (mainly film-forming substances), pigments, various additives and water (or solvents).4. What are the classification methods for architectural coatings?
a) by type of substing: can be divided into organic coatings, inorganic coatings, organic - inorganic composite coatings. Organic coatings are divided into organic solvent-based coatings and organic water-based (including water-milk and water-soluble) coatings because of the different solvents they use. Common coatings in life are generally organic coatings.
b) by decorative effect classification: can be divided into: 1. surface flat smooth flat paint (commonly known as flat coating), which is the most common way of construction;
c) by site of use on a building: divided into interior wall paint, exterior paint, ground paint and roof paint.
d) by function: can be divided into ordinary coatings and special functional architectural coatings (e.g. fire-resistant coatings, waterproof coatings, mold-resistant coatings, road marking coatings, etc.).
) by the use of color effects: such as metal paint, transparent varnish, etc.
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architectural coatings expertise Exterior wall paint wholesale engineers can not5. What is the base of architectural coatings?
, also known as film-forming substances or adhesives, are the most important components of coatings and play a decisive role in coating performance. When the substation is filmed, with the evaporation of solvents (or water) in the coating, the binder molecules in the solution or polymer particles in the emulsion come close to each other and condense, bonding the pigment and filler together to form a continuous coating film, and making the coating film firmly bonded to the base. The film-forming substances of solvent-based coatings are commonly referred to as resins, and the film-forming substances in water-based coatings are commonly referred to as emulsions and re-dispersable powders. 6. What are the pigments and fillers of architectural coatings?
pigments, also known as coloring pigments, the main role in the coating is to make the coating film have a certain cover force and required a variety of colors, but also has a certain degree of weather resistance, alkaline resistance. Because the exterior coating is directly exposed to the atmosphere, but also directly painted on the alkaline surface of cement mortar, so it is appropriate to choose weather-resistant, alkaline pigments.
white pigments are mainly titanium dioxide powder. Titanium white powder is divided into two types: redstone type and sharp titanium type. The sharp titanium type has poor weather resistance and can only be used in inner wall coatings. Color pigments mainly include carbon black, iron oxide red, iron oxide yellow, indisium, indisium green, as well as common bright organic pigments such as red, sun-resistant yellow, permanent solid purple and so on. One of the first five pigments low cost, strong color preservation, is the first choice of paint color matching, the last three pigments bright color, color preservation is better, but poor cover, high cost, currently mainly rely on imports.
fillers, also known as body pigments, mainly play a filling role, fillers can effectively improve the storage stability of the coating and the relevant properties of the paint film, such as improving the durability of the coating film, heat resistance and surface hardness, reduce the shrinkage of the coating film. Commonly used fillers are calcium carbonate, talcum powder, calcined kaolin, precipitated sulphate, aluminum silicate and so on.
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architectural coatings expertise Exterior wall paint wholesale engineers can not 7. What are the additives for architectural coatings? What does it do?
the role of building coating additives is to improve some of the properties of coatings and coatings, generally the amount of use is very small, but the performance of coatings and coatings has a great impact. Its main varieties and properties are as follows:
film-forming additives: generally film-forming substances have their own minimum film-forming temperature, different varieties, its minimum film-forming temperature varies. When the outside environment temperature is lower than the minimum film temperature of the coating, the coating will appear cracking, powdering and other phenomena, can not be filmed. In order to adapt the coating to a certain construction environment, in a wide temperature range can form a continuous, complete coating film, production needs to add a certain amount of film-forming additives to improve the coating film-forming.
wetting, dispersants: The role of wetting agent is to reduce the surface pressure of the wetting substance, so that pigments and filler particles are fully moisturized and keep the dispersion stable. The role of the dispersant is to disperse the pigment and filler particles together into primary particles by shear force, and to disperse the pigment particles in the system without admission for a long time and steadily through electrostic refringing force and spatial bit resistance effect.
desulbants: The role of deboist is to reduce the surface pressure of the liquid, in the production of coatings can be due to mixing and the use of dispersants and other surfactants caused by a large number of bubbles quickly disappear, reduce paint manufacturing and construction obstacles.
anti-mold preservatives: the role of anti-mold agent is to prevent the coating after painting the film in a humid state of mold. The role of preservatives is to prevent coatings from decaying during storage due to the action of microorganisms and enzymes.
antifreeze: The role of antifreeze is to reduce the freezing point of water to improve the antifreeze resistance of the coating.
thickener: the coating without thickening adjustment is a thin solution state, in the storage process is prone to water and pigment deposition phenomenon, and the construction process will produce a flow hanging, can not form a uniform thickness coating film, so must be added a certain amount of thickener to improve the viscosity of the coating, in order to facilitate storage and construction. The viscosity of the coating is not directly related to the concentration, the viscosity is adjusted by adding a thickener, the concentration is an effective part of the coating, is constant.
8. What is the key to the quality of building coatings?
final explanation is that the quality of the coating is good or bad is the coating effect. First of all, the selection of film-forming substances play a decisive role in the quality of coatings. Secondly, the choice of pigments will also affect the weather resistance and durability of the coating film. Therefore, the key to affect building coatings is the coating composition of film-forming substances and pigments.
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