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    Home > Coatings News > Paints and Coatings Market > Coating knowledge: common problems and cause analysis of putty scraping construction

    Coating knowledge: common problems and cause analysis of putty scraping construction

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: the common quality problems of wall putty application are mainly cracks, blisters, overskin and peeling of putty probe layer The reasons are as follows: poor bonding The cracks, peeling and falling off of putty are mainly caused by the poor bonding between putty and base course If the grass-roots cleaning is not clean or the treatment method is not proper, the template isolating agent, oil, inorganic acid and organic acid are not thoroughly removed No caustic water solution is used (for cleaning wall oil stain), and no binder or putty formula emulsion is added, which will reduce the bonding strength between the putty and the base layer The test data show that the base treatment can increase the bond strength by 5 & MDA 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 Home of paint news: the common problems of wall putty construction quality are mainly cracks, blisters, excessive skin and falling off of putty probe layer The reasons are as follows: poor bonding The cracks, peeling and falling off of putty are mainly caused by the poor bonding between putty and base course If the grass-roots cleaning is not clean or the treatment method is not proper, the template isolating agent, oil, inorganic acid and organic acid are not thoroughly removed No caustic water solution is used (for cleaning wall oil stain), and no binder or putty formula emulsion is added, which will reduce the bonding strength between the putty and the base layer The test data show that the base treatment can generally increase the bond strength between 5 and 9 kg / square centimeter The emulsion can improve the bond property between the mortar and the base layer, and the general bond strength can be increased from 4 to 7 kg / cm2 Putty coating is too thick The thickness of putty coating is related to the selection of materials and mix proportion For example, for the convenience of operation, if the putty is scraped with large amount of talcum powder, the lubrication performance of the putty is improved, and the coating will not be too thick generally; however, if the putty filling effect is taken into consideration, the amount of large amount of white powder is increased, because the particles of large amount of self powder are relatively thick, the lubrication performance of the putty is poor, and the operation is not good, the coating may be too thick at this time It can be seen that the key to prevent the coating from being too thick is to properly adjust the amount of large white powder and talcum powder The cracks caused by the main structure have nothing to do with the quality of putty and the construction method For other reasons, the time interval between two times of putty peeling off is too short If the first putty is not completely dried, the second putty will be scraped, which is easy to cause drying shrinkage and peeling off 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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