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    Home > Coatings News > Paints and Coatings Market > Coating knowledge: factors influencing the cost of anticorrosive coating in anticorrosive construction

    Coating knowledge: factors influencing the cost of anticorrosive coating in anticorrosive construction

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: when choosing anticorrosive coating (paint) for anticorrosive construction, in addition to the quality of anticorrosive coating and the completeness of technical service, cost is also a very important factor So, what are the factors that affect the cost of anticorrosive coating? 1 Although the film thickness of the coating is strictly speaking, the construction coating should also have the film thickness requirements, most of the construction parties do not pay attention to this, but more on the requirements of covering power and color and other finishing effects It is totally different from the architectural coating The anti-corrosion coating has strict requirements on the film thickness of the anti-corrosion paint, because different coating film thickness will produce different anti-corrosion performance International standard iso1294 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 coatings: when choosing anticorrosive coating (paint) for anticorrosive construction, in addition to the quality of anticorrosive coating, the completeness of technical services and other factors, cost is also a very important factor So, what are the factors that affect the cost of anticorrosive coating? 1 Although the film thickness of the coating is strictly speaking, the construction coating should also have the film thickness requirements, most of the construction parties do not pay attention to this, but more on the requirements of covering power and color and other finishing effects Different from architectural coatings, anticorrosive coating has strict requirements on the film thickness of anticorrosive paint, because different coating film thickness will produce different anticorrosive performance International standard iso12944 specially lists the requirements on film thickness for different anticorrosive design life under various corrosive environment conditions The worse the corrosive environment is, the longer the set anticorrosive life is, the thicker the film thickness requirements are Under certain conditions, the more paint is used, the higher the cost of anticorrosive coating is 2 the solid content and solid content of paint is an important paint performance parameter, assuming that the solid content of a certain paint is 60%, That is to say, 40% of each unit of paint material will volatilize, and only 60% will remain as film-forming material Therefore, under the rated film thickness, the higher the solid content is, the larger the coating area of the unit material is Here is the relationship between the theoretical coating rate and the solid content: theoretical coating rate = solid content (%) * 10 / dry film thickness Then, the higher the solid content, the larger the coating area of the unit material, in other words, the less the paint consumption per unit area, the lower the corresponding material cost 3 Loss control in the whole coating process, there are many factors that cause paint loss, including: (1) roughness loss (3-10%), the appropriate roughness is not more than one third of the total thickness of the coating The higher the roughness, the greater the loss (2) Coating distribution loss (roller brush 5-15%, airless spraying: 15-30%): loss caused by uneven coating distribution Because the dry film thickness is controlled according to the 90-10 or 80-20 principle, the average film thickness usually exceeds the design film thickness, and it is difficult to completely avoid excessive coating on some parts (3) Actual coating loss: including the paint not sprayed on the workpiece, coating tools and residues in the packaging barrel, etc In terms of spraying construction, small workpieces and spraying in strong wind will undoubtedly increase the loss The loss of air spraying is greater than that of airless spraying (4) Paint waste: such as the waste caused by the failure of two-component paint to be used up within the service life, etc Among them, (1) (2) two items are inevitable, and there are not many elements that can be controlled by people, (3) (4) they can be controlled by people, which is related to the quality of construction personnel and the level of construction management At the same time, different construction methods lead to different losses Different loss will lead to different use amount and cost of anticorrosion of unit steel structure 4 the unit price of paint is obvious, and the price of anticorrosive materials per liter is also an important factor However, from the above analysis, the unit price of anticorrosive materials is not the only factor that constitutes the cost of anticorrosive materials in anticorrosive construction It can be seen from the above that in the anti-corrosion construction and selection of anti-corrosion coating, on the one hand, we should pay attention to the product quality and price, on the other hand, we should understand the relevant indicators of the paint, such as solid content, etc., on the other hand, we should also pay attention to the design dry film thickness and construction method, these factors will affect the cost of anti-corrosion coating in the anti-corrosion construction [focus on WeChat official account "paint net"; pay attention to surprises, scan code to see if your husband is selling paint.. "Paint group: 92525666] coatings house is focused on coatings, diatom mud, paint and coatings, coating technology, fire retardant coatings news information and coatings, diatom mud, paint and coating, coating technology, fire retardant coatings decoration knowledge and decoration effect map.
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