Common sense of coating: solve the problem of emulsion paint crack from the construction process

Core tip: emulsion paint film cracking is not an incurable disease, as long as we find the crux of the problem, we can treat it In the design of emulsion paint formula, it should better fit the construction environment and adapt to the more common construction methods The situation that cannot be constructed should be clearly indicated in the construction process From the perspective of the constructor, when constructing a coating product, it is necessary to understand its construction process in detail, to make clear what kind of construction method can produce better results, and to strive to cut off the possibility of producing paint film defects from the source The following from the construction process how to avoid emulsion paint film cracks 1 During construction 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: emulsion paint film cracking is not an incurable disease, as long as the crux of the problem is found, it can be the right medicine In the design of emulsion paint formula, it should better fit the construction environment and adapt to the more common construction methods The situation that cannot be constructed should be clearly indicated in the construction process From the perspective of the constructor, when constructing a coating product, it is necessary to understand its construction process in detail, to make clear what kind of construction method can produce better results, and to strive to cut off the possibility of producing paint film defects from the source The following from the construction process how to avoid emulsion paint film cracks 1 During construction, it is necessary to avoid too thick paint film coating If the film is too thick, the volume of wet film changes greatly before and after evaporation, and the stress caused by volume shrinkage is also large, especially the emulsion paint with low volume solid content is easier to crack than the normal construction Too thick paint film will also lead to the evaporation of water inside the paint film After the surface of the paint film is dry, the volume shrinkage caused by the slow evaporation of water vapor inside the paint film is easy to crack the surface paint film 2 During the construction, there are some special parts, such as the interface of two or more planes, where the latex paint is constructed, and the tension in different directions acts on the paint film at the same time when it is dry If the strength of the paint film is not enough to resist the tensile stress, it is easy to produce cracks Therefore, the principle of thin coating multiple times shall be followed during the construction of the corner joint 3 The emulsion paint shall not be excessively diluted during construction Excessive dilution of emulsion paint will result in too thin dry film when the film is dry, poor dry film strength, too large volume change when the water evaporates, and the film strength is not enough to resist the volume shrinkage stress to produce small cracks 4 During the construction of the next emulsion paint, it must be ensured that the film of the previous emulsion paint has been dried If the primer is not dry, the coating will lead to the inconsistent shrinkage stress when the two layers of paint film dry, resulting in cracking; at the same time, it is necessary to ensure that the thickness of the paint film is uniform during construction, and the inconsistent shrinkage stress when the uneven thickness of the paint film dry, which is also easy to lead to cracking of the paint film 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,