Common knowledge of coating: summary and solution of ten common problems in coating

Core tips: 1 What is the stain sealing bottom paint? A: the so-called stain sealing primer is also a kind of primer Different from the common primer, this primer has the permeability to seal the pores of concrete At the same time, this primer also has the covering power to cover the stains on the base material 2 The distinction between oil paint and water paint and the distinction between oil paint and water paint? Answer: the carrier of oily paint is organic solvent, for example, alkyd paint and polyurethane paint are oily paint The carrier of water-based paint is water, for example, the common architectural decorative paint emulsion paint is water-based paint There is no difference in concept between oil paint and oil paint 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: 1 What is the stain sealing primer? A: the so-called stain sealing primer is also a primer Different from the common primer, this primer has permeability to seal the pores of concrete At the same time, this primer also has covering power, which can cover the stains on the substrate 2 The distinction between oil paint and water paint and the distinction between oil paint and water paint? A: the carrier of oil paint is organic solvent, such as alkyd paint and polyurethane paint The carrier of water-based paint is water, for example, the common architectural decorative paint emulsion paint is water-based paint There is no difference in concept between oil paint and oil paint Similarly, there is no conceptual difference between water-based paint and water-based paint 3 Why is the paint film hard when some paint is applied on the glass plate after drying? Is the hardness and hardness of the film related to the content of the emulsion, or is it related to the variety of the emulsion? Answer: under normal film forming conditions, the hardness of latex paint film has little to do with the content of emulsion, mainly depending on the type of emulsion used If the emulsion temperature of the emulsion is high, the hardness of the film will be higher after normal film formation 4 If you want the surface of latex paint to dry faster, what measures can be taken? For example, what additives can be added? A: there is no drier for latex paint If you want to dry faster, you can increase the volume solid content, and reduce the use of film-forming additives and propylene glycol / glycol in the formula Of course, we need to examine whether other related performance is affected too much 5 How to dissolve (destroy) epoxy resin grease, latex and other products without damaging the work-piece wrapped in the glue? A: paint remover composed of strong solvent can be used for paint removal 6 Can we use emulsion paint on the old house with porcelain chips? Answer: the client plans to use ceramic tile to decorate the interior wall of living room, and brush latex paint on the surface of ceramic tile to change the color and appearance Suggestion: because the adhesion of common emulsion paint on the surface of ceramic tile is not ideal, the key is to construct the emulsion paint primer specially designed for ceramic tile first, and then construct the emulsion finish 7 How to judge the covering degree of titanium dioxide? What methods can be used for detection? Answer: you can use the method of measuring the ratio to judge the covering power of titanium dioxide As for how to measure the contrast rate, we can refer to the contrast rate test method in the national standard GB/T9756-2001 "synthetic resin emulsion interior wall coating" 8 how to detect the glass transition temperature of some emulsion? Answer: the measurement of the glass transition temperature of emulsion is a complex matter The glass transition temperature is different with different test methods DSC (differential scanning calorimeter) is the most commonly used instrument to measure the glass transition temperature For the formula designer, the minimum film forming temperature (MFFT) of the emulsion should be more concerned, and the minimum film forming temperature can be determined by the MFFT tester 9., please use Roman Haas's 3188 emulsion to make water-based paint, how to eliminate bubbles? I added 0.1% byk-022, with shrinkage cavity There was a bubble in the brush coating process, but I haven't seen such a problem Ask!!!! A: Generally speaking, using too strong defoamer, in the case of poor dispersion, it is easy to appear non defoaming, but there is shrinkage cavity It is suggested to change bky-024 or other defoamer, and try to increase the dosage slightly 10 Why does the paint always blister in the construction (even if the base material is very good)? Answer: it may be due to the selection and use of defoamer If it is roll coating construction, the quality of the roller will also cause blistering 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,