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    Home > Coatings News > Paints and Coatings Market > Common knowledge of coating: how to prevent water drops and sticky feeling of coating

    Common knowledge of coating: how to prevent water drops and sticky feeling of coating

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: the phenomenon of paint dropping, sagging and uneven film on the base surface can be called paint sagging The main reasons are that the prepared paint is too thin, the adhesion is poor, part of the paint flows under the action of gravity; the paint film is too heavy and falls due to too thick painting or spray painting; the construction environment temperature is too low, the paint film dries slowly; the paint contains too many heavy pigments, some of the paint sags; the surface of the object base is uneven, the thickness of the paint film is uneven, the drying speed is different, and the parts with too thick paint film are easy to fall There are oil, water and other pollutants on the surface of the base course of the object which are not compatible with the paint and affect the adhesion, resulting in the sagging of the paint film Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Paint Home News: paint in the basic surface of the drop, sagging, uneven film phenomenon can be called paint sagging The main reasons are that the prepared paint is too thin, the adhesion is poor, part of the paint flows under the action of gravity; the paint film is too heavy and falls due to too thick painting or spray painting; the construction environment temperature is too low, the paint film dries slowly; the paint contains heavy pigments Too much, part of the paint is sagging; the surface of the object base course is uneven, the thickness of the paint film is uneven, the drying speed is different, and the parts with too thick paint film are easy to flow down; the surface of the object base course has oil, water and other pollutants which are incompatible with the paint, affecting the adhesion, causing the paint film sagging What measures can be taken to prevent paint from falling? First of all, we should choose the paint with good quality and diluent with proper volatilization speed, and control its penetration Secondly, the surface of the object shall be treated flat and smooth, and the surface oil, water and other dirt shall be removed The ambient temperature of the re construction shall meet the standard requirements of the type of paint For example, the varnish should be painted within 3 hours at 20-27 ℃ When painting again, it shall be carried out according to the process procedure: first, vertically, horizontally and obliquely, and then vertically level the paint to make the thickness of the paint film uniform Finally, the moving speed of the spray gun and the distance from the object shall be controlled evenly The spray shall be carried out according to the specified process procedure, with vertical spray, circular spray and horizontal spray first, so as to form a uniform film with the same thickness The surface roughness of the paint film is characterized by uneven surface, sand like protrusion or small air bubble after the paint film is formed The main reasons are that there are too many pigments or too thick particles in the paint; the paint itself is not clean and mixed with sundries, so it can be used without sieving; the ambient temperature when preparing the paint is low, and the bubbles in the paint are not completely scattered and discharged; the object surface is not cleaned up, there are sundries such as sand particles, which are mixed into the paint film when painting; the containers (brush, paint barrel, spray gun, etc.) used are not clean and there are residual sundries Into the paint; construction environment cleaning and protection are not enough, there are dust, sand and other debris stuck to the brush or fell on the paint film To prevent the rough surface of the paint film, we also have several precautions: first of all, we need to select the paint with good quality Before use, we must sift it carefully, mix it evenly, and use it after there is no bubble Next, the surface of the object shall be cleaned to keep it flat, smooth and dry Then it is very important to arrange the construction sequence of each type of work reasonably to ensure that the construction environment for painting is free of sundries and dust Finally, it must be noted that it is not allowed to reuse the utensils filled with different models and different performance paints If necessary, the residues shall be removed before reuse The prevention methods for the sticky feeling of the paint: 1 Mix the paint in strict accordance with the requirements of the instructions, and mix it fully before use 2 One time brushing should not be too thick, generally 0.5mm 3 Each painting must be dried and polished before the second painting 4 Pay attention to the change of environmental conditions, and do a good job of moisture-proof and low temperature prevention 5 Thoroughly remove the greasy dirt, turpentine, etc on the surface of the coating Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,
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