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    Home > Coatings News > Paints and Coatings Market > Water-based paint technology application, paint construction 300 questions

    Water-based paint technology application, paint construction 300 questions

    • Last Update: 2020-11-28
    • Source: Internet
    • Author: User
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    1
    is architectural paint?
    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 of coatings
    chinese
    .
    2
    the relationship between water-based coatings and paints?
    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.
    the
    composition of the 3-year-old architectural coating?
    coatings consist of substations (mainly film-forming substances), pigments, various additives and water (or solvents).
    are
    classification methods for building coatings in 4 years?
    A: by the type of base material classification: 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. Inorganic coatings refer to coatings produced from inorganic polymeric materials, including water-soluble silicate, silicone, silicone and inorganic polymer systems. Organic-inorganic composite coatings have two composite forms, one is that the coating in the production of organic materials and inorganic materials together as a base material to form composite coatings, and the other is organic coatings and inorganic coatings in the decorative construction of the combination of each other.
    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 construction method;
    C: By site of use on buildings: divided into interior wall coatings, exterior paints, ground coatings and roof coatings.
    D: By function: can be divided into general coatings and special functional architectural coatings (e.g. fireproof coatings, waterproof coatings, mold-resistant coatings, road marking coatings, etc.).
    E: Classified by use of color effects: e.g. metallic paint, transparent varnish, etc.
    is
    the base of the 5-year-old architectural coating?
    , 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
    paint, filler is what?
    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. Titanium white powder is divided into two types: redstone and sharp titanium. 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. Filler is also known as body pigment, mainly play a filling role, filler 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.
    are
    additives for building coatings in July? 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
    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.
    features
    9 fireproof coatings?
    fire protection coating is a typical functional building coating, in addition to the decoration of general paint, but also in the event of a fire in a building, delay the temperature of the applied base materials. The use of fire protection coatings is helpful to prevent the burning of buildings, or to delay the burning time of buildings, and to provide effective help in fire fighting. There are two types of fire-resistant coatings: insulation and expansion. When a fire occurs, under the action of flame or thermal radiation, fire protection coating rapidly occurs physical and chemical changes and isolates the spread of heat, prevents the spread of flame, plays a flame retardant fire prevention role
    10
    What is elastic latex paint?
    elastic latex paint is made of elastic acrylic emulsion as a film substance, its coating film not only has the performance of ordinary paint, but also maintains a high elasticity, flexibility and elongation rate within a certain temperature range, the elastic coating is mated into a high viscosity, high solid points can be coated with a special puller roller to produce a three-dimensional effect of the coating. The substrate of the building is generally cement-based, affected by the ambient temperature, the expansion and contraction is heavy, easy to produce cracks, so often using elastic coatings for construction.
    estimate
    the amount of water paint used in the interior wall of the 11th wall?
    : 10-12m2/kg (once)
    . Plain finish: 8-12m2/kg (single) 4-6m2/kg (twice)
    . Brush usage calculation formula: s (housing floor area) units: kg
    - No ceiling: paint (twice): paint consumption: s×0.7×3.2/4 (kg)
    primer (once): Paint consumption: s×0.7×3.2/8 (kg)
    ) ceiling: paint (twice): Paint consumption: s×0.7×2. 5/4 (kg)
    primer (once): Paint consumption: s×0.7×2.5/8 (kg)
    12
    The effect of building wall paint against alkali primers?
    anti-alkali, closed, breathable, save the use of paint, improve the fullness of the paint film to improve the paint decoration effect.
    13
    add no flavor to the paint? Are there any flavorings in the market?
    This is because for poor quality water paint and most paints, there are a lot of organic added substances, which will give off a stimulating odor, in order to cover up the irritating odor, will add flavor, and the fragrance itself is harmful to the human body.
    14
    when the finished paint is out of the market?
    this leaves a gap for construction workers to exchange water
    15
    different colors of paint quality differences?
    's different. Paints of different colors are made of different colored pigments, and different pigments have different properties. Commonly used pigments are bright organic pigments and inorganic iron oxide series. Iron oxide series tone is relatively dim, but alkaline, weather-resistant, with good cover, cheap. Organic pigment tone bright, but weather resistance, alkaline resistance, color preservation has a certain limit, and poor covering force, higher prices.
    16
    paint film drop powder?
    Powder drop phenomenon is a common problem in paint film, the reason analysis has the following points: not painted anti-alkali primer or brush anti-alkali primer lead to the alkalinity of the substrate more serious lead to pan-alkali late drop powder, drying time is not enough, resulting in paint film into a bad film, the appearance of powder, paint over-dilution, resulting in less solid content during construction and thus the phenomenon of powder drop.
    17
    white paint on the inside and outside walls can't be darker?
    Because a large number of pigments are used in dark paint, resulting in an increase in the pigment content in the paint, so that the ratio between the pigment and the substaughter changes, significantly reducing the paint film performance of the coating, therefore, in order to ensure all aspects of the function of the coating, in practice, generally do not match dark paint.
    18
    low-grade paint can not adjust dark paint, or even not suitable for color?
    low-grade paint formula on the one hand, the use of a large number of fillers, on the other hand, only a small amount of substation, resulting in the base material on the powder (pigments, fillers) adhesion is insufficient, if forced to make dark paint, it is easy to de-powder phenomenon, so it is not appropriate to adjust dark paint. Some low-grade interior wall coatings such as engineering paint due to the use of white pigments is very small, product wet cover force is poor, if forced color adjustment, it is easy to lead to construction flowers, so it is not appropriate to color.
    are
    common construction methods in 19 years?
    common construction methods are brush coating, roller coating, spraying (including airless spraying), scraping and so on. Brushing construction surface flat, not easy to produce bubbles, but low efficiency, suitable for interior wall decoration, roller coating construction efficiency is high, paint film surface easy to form a slight orange peel effect, easy to foam when construction, more suitable for large-area construction of external walls, spraying is mainly used for special products construction, such as metal paint, real stone paint, embossed intermediate paint, spray construction can achieve a variety of different construction effects, low material loss and construction efficiency is very high. Of course, spraying construction also has shortcomings, such as the process on the painter's technical requirements are higher, construction is vulnerable to environmental impact. Scratch coating is for special thick slurry coating construction methods, such as mortar-type floor paint, solvent-free floor paint and so on.
    20
    how do I choose the construction tool correctly?
    different construction tools according to different construction processes and different types of coatings, but also pay attention to the needs of customers. General paint flat coating construction using wool brush, lining pen or roller, brush coating disadvantage is prone to brush marks, rolling paint is prone to orange peel phenomenon. If the construction with spray gun can overcome this shortcoming, but indoor construction paint fog is too large, outdoor construction is vulnerable to wind. For real stone paint, embossed paint, metal paint and other special products generally use spray gun spray. In short, different tools have different advantages and disadvantages, construction needs to be based on the paint film surface effect needs to choose the construction tools.
    21
    coatings for the construction environment?
    First of all, the ambient temperature, water-based coatings generally require construction above 5 degrees C, epoxy flooring coatings generally above 10 degrees C construction, followed by relative humidity, the general environment relative humidity is less than 70%, coating construction can be carried out. In addition, construction is not expected in windy, rainy, snowy and overly dry weather conditions.
    22
    factors that affect the paint area?
    many factors affect the paint area, such as the flatness of the grass, construction tools, the quality of the paint, etc. all affect the paint area of the coating. The more flat the base coating construction, the less loss, the larger the brush area. Brush area is also very much related to construction tools, in general, spray construction losses are the least, followed by brush coating, because of the roller coating splash phenomenon, so it is the most consumable one of the construction methods. The stronger the covering force of the coating, the greater the area of the coating.
    23
    poor cover for interior wall products?
    there is a relationship with the amount of water to water too much lead to less internal powder, the appearance of a film is not good cover force difference, and the substrate water absorption rate is related to the substrate absorption rate seriously leads to the film cover force difference.
    the
    effects of 24-year-old architectural paint spraying and brushing?
    For different construction methods of painting effect is different, such as spraying, the general decorative effect is much better than brushing, brushing can generally meet the decorative performance requirements of customers, simple operation but easy to appear brush marks.
    25
    healthy water paint compared to other latex paint is safe, healthy, environmental protection reflected in what? < b
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