Common knowledge of coating: causes of peeling and peeling of coating of external wall insulation system and treatment plan

Core tip: according to incomplete statistics, more than 80% of exterior wall thermal insulation materials have peeling phenomenon of exterior wall coating surface Therefore, the poor permeability of the coating is the main reason for the peeling of the coating used in the exterior wall thermal insulation materials 2 Choose the thin coating with good reflectivity to achieve double insulation effect According to incomplete statistics, more than 80% of exterior wall insulation materials have peeling phenomenon of surface coating The most frequent places of peeling are: 1 The first place to appear is the benzene board joint Because of the poor air permeability of the benzene plate, the water generated by condensation comes from the weakest place of the benzene plate Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Paint Home News: according to incomplete statistics, more than 80% of the exterior wall thermal insulation materials have peeling phenomenon of the exterior wall paint surface coating Therefore, the poor permeability of the coating is the main reason for the peeling of the coating used in the exterior wall thermal insulation materials 2 Choose the thin coating with good reflectivity to achieve double insulation effect According to incomplete statistics, more than 80% of exterior wall insulation materials have peeling phenomenon of surface coating The places where peeling occurs most are: 1 The first place where peeling occurs is the joint of benzene plate Because of the poor air permeability of benzene plate, the water generated by condensation escapes from the joints of benzene plate at the weakest place 2 Where the sun shines Because the temperature inside the wall rises, the liquid water is easy to turn into water vapor The water vapor expands, pushing the film open, causing peeling and peeling The greater the relative humidity difference between the inside and outside of the wall, the easier peeling occurs Jgj144-200 stipulates that under the condition of normal use and maintenance, the service life of external wall insulation project shall not be less than 25 years For this reason, more and more users prefer to choose high-grade coating as the decoration of finishing layer However, because of the large amount of emulsion used and the different materials used, the permeability of the paint film is poor When it rains, most of the water entering the paint film can not be permeated and bubbling, such as weather resistant and scrubbing gloss or glossy paint, elastic coating, metallic paint and so on Low grade paints are not easy to peel off because they are low grade coatings, which generally refer to less expensive and cheaper coatings Therefore, the poor permeability of the coating is the main reason for the peeling of the coating used in the exterior wall thermal insulation materials In order to solve the problem fundamentally, it is necessary to match the base material and the surface coating properly When choosing the primer, it is necessary to use the silicone water-based primer with good permeability and waterproof function 1 Choose non elastic modified silicone exterior wall coating 2 Choose the thin coating with good reflectivity to achieve double insulation effect 3 Choose water-based fluorocarbon paint or water-based fluorocarbon metal 4 Choose the thick texture exterior wall coating with good air permeability 5 Choose elastic exterior wall coating with both elasticity and permeability 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,