Coating knowledge: seven common problems of waterproof coating construction

Core tip: the house has just been waterproof, blistering, color difference, cracking, how to deal with it? Today I will tell you the reasons and solutions: 1 The concrete phenomenon of poor bonding with the base: the coating and the base are not bonded or blistering or the bonding force is not enough prevention measures: 1 The base must be cleaned 2 Check the strength of the base, no sanding, peeling, loosening 3 The water-soluble coating shall be free of open water 4 The base course of solvent based coating must be dry 5 The first coating must use primer 2 The specific phenomenon of uneven thickness: after the coating film is formed, the prevention and control measures of uneven thickness: 1 The base course must be flat and free of holes 2 The coating must be divided into 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: the house has just been waterproof, blistering, color difference, cracking, how to deal with it? Today I'll tell you the reasons and solutions: 1 The concrete phenomenon of weak bonding with the base: the coating and the base can't stick or the blistering or bonding force is not enough prevention and control measures: 1 The base must be cleaned up 2 Check the strength of the base course No sanding, peeling, loosening 3 No open water in the water-soluble coating 4 The base course of solvent based coating must be dry 5 The first coating must use primer 2 The specific phenomenon of uneven thickness: after the coating film is formed, the prevention and control measures of uneven thickness: 1 The base course must be flat and free of holes 2 The coating must be completed in several times 3 Adjust the consistency of the coating according to the time and the place 3 Specific phenomenon of lumps: there are lumps in the coating After the coating construction, the coating contains small particles prevention and control measures: 1 Do not use the expired or over mixed coating 2 Manual mixing or mechanical mixing of two-component materials is not in place Pay attention to check the mixing materials 3 Use the unclean bucket to mix Pay attention to the cleaning of the mixing bucket 4 The proportion is not correct, and the proportion should be correct 4 Specific phenomenon of coating stratification: coating stratification occurs after coating construction and film forming, or there are blistering prevention and control measures between the coatings: 1 Cleaning is not in place before each construction in the process of film forming in several times 2 The waterproof film formed in the previous time is not completely dry 5 The drying speed is slow Specific reasons: because the one-component acrylic coating is formed by the evaporation of water into film, high humidity and low temperature environment, which hinders the evaporation of water in the coating, so the drying speed is relatively slow prevention and control measures: 1 Strengthen indoor ventilation conditions can be more conducive to the development of water 2 Thin coating and multilateral coating are more conducive to the volatilization of water During the construction, it is necessary to wait until each coating is dry before the next coating 3 Use cement-based coating for construction, or use other waterproof coating 6 After the completion of waterproof construction, the specific reasons for the cracking of the coating are as follows: 1 The base course is not cleaned and there is a large amount of floating soil 2 If the coating is too thick at one time, the uneven evaporation of water will lead to the cracking of the coating during the drying process of the coating 3 In outdoor construction, the external conditions are windy and other weather conditions, which may easily lead to the cracking prevention and control measures: 1 Before construction, remove the floating soil of the base course, treat the base course with the coating primer, and adopt the method of thin coating for many times 2 Avoid the construction in outdoor in windy weather 7、 Specific reasons for the phenomenon of tofu dregs in waterproof coating: too much water is added to the coating, resulting in the separation of the liquid and powder materials of the coating, and the powder materials sink, just like the prevention measures of tofu dregs: control the water addition, and strictly follow the product instructions for the proportion 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,