Coating standards: methods and standards for quality inspection of floor coating

Core tip: in order to ensure the quality of floor coating, correct selection of materials, standardized construction and reasonable use of materials are the basic issues In addition, there are several aspects that should be paid attention to For example, through the establishment of "professional service and management system" or "one-stop" service system, as well as the scientific design of the application characteristics of the floor, the organization of professional construction team, the correct control and pre-treatment of the construction ground surface, the correct construction, strict quality supervision, etc Only from all aspects to form a joint force to ensure that the floor coating project to achieve the best results Special introduction for this expert 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: in order to ensure the quality of floor coating, the correct selection of materials, standardized construction and rational use of materials are the basic issues In addition, there are several aspects that need to be paid attention to For example, through the establishment of "professional service and management system" or "one-stop" service system, as well as the scientific design of the application characteristics of the floor, the organization of professional construction team, the correct control and pre-treatment of the construction ground surface, the correct construction, strict quality supervision, etc Only from all aspects to form a joint force to ensure that the floor coating project to achieve the best results For this reason, the experts specially introduced the testing standard of floor quality Coating quality testing instruments can cover product quality testing and coating quality testing, but some equipment and instruments are expensive, and some enterprises may not be able to purchase them, but this should not be the reason for quality out of control The first thing to be tested is the coating adhesion, including two aspects: first, GB / t9286 paint and varnish, paint film scratch test Among them, if the thickness is less than 500 μ m, the grid method can be used in the construction site: the blade spacing is 1mm if the thickness is less than or equal to 60 μ m; the blade spacing is 2mm if the thickness is 60-120 μ m; the blade spacing is 3mm if the thickness is greater than or equal to 121 μ M The characteristics of adhesion test are scratch test, and the sample test is used to replace the adhesion data of the real object for the product coating performance test The reasons include the controllability of the coating environment conditions, coating and drying in the production workshop, and the skill of the operator is consistent with the coating quality The second aspect of coating adhesion test is the determination of coating adhesion in GB / t5210 Faraday method According to experts, the thickness of self leveling floor coating is large, and the allowable blade spacing is difficult to be scratched through, because the coating hardness is large, it is not suitable for the operation of scratched blade; the pull-out adhesion tester of self leveling coating, mortar layer and other thick coating is improved compared with the pull-out method in the past; the construction industry test combines the method of small hammer tapping to listen to the empty drum with the pull-out tester to solve the problem of multi-point test Quantity The hardness test of coating surface and relevant application performance mainly includes the following six aspects: 1 GB / t6739 pencil test method for film hardness The laboratory has pencil hardness tester and manual test on construction site Only the corresponding pencil with required hardness index is required, and the plough has 5 3mm traces not damaged by plough The pencil hardness represents the hardness of tested film; 2、 GB / t1730 "determination of film hardness Pendulum damping test" is for laboratory test; III gb9273 "no mark test of film" (equivalent to iso3678 "no mark test of paints and varnishes"), test with shore a hardness rubber, nylon wire mesh and certain weight load, 10 minutes later, mark with wire mesh on the coating surface, or express with the time when the coating just leaves no mark; 4、 Gb9275 Buchholz indentation test (equivalent to iso2815 Buchholz indentation test), the effective load of the indentation machine is 500g ± 5g, the sharp blade metal wheel of the indentation machine rotates to produce the indentation shape of the tested coating film, and it can be read 0.1mm through 20 times magnification observation and measurement The results of compressive indentation test are expressed as the function of the reciprocal of indentation length; 5 GB / t9279 scratch test of paints and varnishes (equivalent to ISO scratch test of paints and varnishes); 6 GB / t9280 palletizing test of paints and varnishes (equivalent to ISO palletizing test of paints and varnishes) 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,