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    Home > Coatings News > Paints and Coatings Market > Coating technology: Construction Technology of water-based crack paint

    Coating technology: Construction Technology of water-based crack paint

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: the principle of crack paint: there are three principles of the traditional solvent based crack paint: reduce the amount of base material, increase the amount of pigment and filler, and improve the volatility of solvent The cracked paint based on these principles has higher shrinkage and lower flexibility, resulting in higher tensile strength due to internal stress, forming uniform cracks, and exposing the color of primer at cracks The crack paint formed by this principle does not need special requirements for the matching bottom color coating, only needs to follow the general matching principle of solvent based paint However, this traditional solvent based crack paint is not only brittle, but also has poor adhesion Shenyang steel structure fireproof coating construction expert punde Building Fire Engineering Co., Ltd Recommended introduction: since its establishment, Shenyang punde Construction Fire Engineering Co., Ltd has cultivated a group of professional construction teams with excellent equipment, rich experience and serious responsibility with advanced and scientific management methods and strict engineering quality assurance and after-sales service system It has undertaken a number of fire system installation projects, which has been praised by customers Every idea and special requirement of you will be fully considered by us and fully realized in the construction technology, which will become the cornerstone of our successful long-term development We are looking forward to your invitation, to provide you with quality services and high-quality technical support! All construction coatings have passed ISO9001 Paint Home News: the principle of crack paint: the traditional solvent based crack paint has three principles: reduce the amount of base material, increase the amount of pigment and filler, and improve the volatility of solvent The cracked paint based on these principles has higher shrinkage and lower flexibility, resulting in higher tensile strength due to internal stress, forming uniform cracks, and exposing the color of primer at cracks The crack paint formed by this principle does not need special requirements for the matching bottom color coating, only needs to follow the general matching principle of solvent based paint However, the traditional solvent based crack paint is not only brittle, but also has poor adhesion A layer of varnish must be applied on the surface of the crack paint to protect the crack paint from falling off On the construction technology of water-borne crack paint, the water-borne crack paint belongs to volatile self drying paint, does not need to add curing agent, the drying speed is fast, it can form a good crack pattern, enhance the beauty of the coating surface, and improve the decoration Suitable for walls, crafts, furniture, etc Crack paint construction system materials: 1 Base color paint (emulsion paint or metal paint and other non-ferrous water-based paint) 2 Crack transparent primer 3 Crack finish 4 Finally, add a layer of dust-proof finish Crack work method: 1 Polish the base material and remove dust, and apply proper primer to the surface Spray or brush one or two coats of primer 2 Spray or brush transparent crack primer Note: thin spray, small crack; thick spray, large pattern The spraying must be uniform in thickness 3 Spray crack finish Note: thin spray, small crack; thick spray, large pattern The spraying must be uniform in thickness Note: the above processes shall be painted after the coating of the previous process is dry 1 The crack paint shall be brushed with water-based crack primer or sprayed on the primer, and only when the primer is half dry can the crack effect appear 2 During the construction of cracked paint workpiece, the paint film of primer and finish paint shall reach a certain thickness and be uniform in thickness, otherwise, it will cause non cracking or uneven crack Before construction, the coating must be fully stirred, otherwise there may be no crack effect 3 The size of the crack depends on the thickness of the paint film of the base color paint and the crack paint The thickness of the paint film makes the crack larger, otherwise, the crack is smaller Crack paint is a kind of volatile self drying paint with rich color and fast drying speed without curing agent It can form a good crack pattern, enhance the beauty of the three-dimensional surface of the coating and improve the decoration Suitable for art glass, decorative glass, craft glass products, etc The factors controlling the shape of cracks are as follows: (1) the primer must have strong adhesion to the selected substrate, high covering power, and be easily wetted by the special transparent primer, otherwise it will affect the formation of cracks (2) The thickness of the special transparent primer can control the size of the pattern, such as the natural cracks in the decoration of antique buildings, the cracks are thin and dense, which should be brushed thinner at this time; if it is necessary to see clear patterns in a large space, the cracks should be fine and large, even in the shape of sea / Island In this case, the thickness of the special transparent primer can be increased, and the special transparent primer can be applied twice if necessary (3) The size and shape of cracks will be affected by the timing of painting crack finish The general rule is that the drying degree of the special transparent primer is high, the cracking speed is relatively slow after finishing the crack top coat, and the size of the cracks formed is relatively uniform; when the drying degree of the special transparent primer is low, the cracking speed is fast after finishing the crack top coat, the first crack is coarse and large, and then the fine cracks are formed in the large area (4) The tool of finishing paint has great influence on the shape of crack The painting method is convenient and can save paint, but the uniformity of cracks is poor The painting method is especially suitable for parts of small volume and complex shape products; the spraying or rolling painting method is used for construction, and the cracks are relatively uniform Spray method is suitable for large and small areas, but the paint consumption is large and uneconomical; roll coating method is mainly used for painting large surfaces As a special decorative effect, crack paint has a wide range of uses in commercial and industrial With the development of waterborne paint in China and the requirement of foreign investors for environmentally friendly paint, the market prospect of waterborne crack paint will be very broad 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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