echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Coatings News > Paints and Coatings Market > Common knowledge of coating: types of metal corrosion and the role of anti-corrosion coating

    Common knowledge of coating: types of metal corrosion and the role of anti-corrosion coating

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com
    Core tip: with the development of heavy-duty anticorrosive coating technology and the application of modern spraying equipment, especially the promotion of high-pressure airless spraying equipment, solvent-free double port spraying equipment, powder spraying equipment, etc., heavy-duty anticorrosive coating will be extended to the field of special anticorrosive coating This paper, published by the technical support department of Xianghe coating phosphating (Chengdu) headquarters, comprehensively describes the main application industries of heavy-duty anticorrosive coatings 1 main application fields Heavy duty anticorrosive coatings are mainly used in harsh environments with prominent corrosion problems and industrial sectors that are not convenient for short-term maintenance The application fields are as follows: ① Emerging marine engineering: Shenyang steel structure fireproof coating construction expert punde Building Fire Engineering Co., Ltd Recommended introduction: since its establishment, Shenyang punde Construction Fire Engineering Co., Ltd has cultivated a group of professional construction teams with excellent equipment, rich experience and serious responsibility with advanced and scientific management methods and strict engineering quality assurance and after-sales service system It has undertaken a number of fire system installation projects, which has been praised by customers Every idea and special requirement of you will be fully considered by us and fully realized in the construction technology, which will become the cornerstone of our successful long-term development We are looking forward to your invitation, to provide you with quality services and high-quality technical support! All construction coatings have passed ISO9001 Home of coatings: with the development of heavy-duty anticorrosive coating technology and the application of modern spraying equipment, especially the promotion of high-pressure airless spraying equipment, solvent-free double port spraying equipment, powder spraying equipment, etc., heavy-duty anticorrosive coating will be extended to the field of special anticorrosive coating This paper, published by the technical support department of Xianghe coating phosphating (Chengdu) headquarters, comprehensively describes the main application industries of heavy-duty anticorrosive coatings 1 The main application fields of heavy-duty anticorrosive coating are mainly used in harsh environment with prominent corrosion problems and industrial departments that are not convenient for short-term maintenance The application fields are as follows: ① emerging marine engineering: offshore facilities, coastal and Gulf structures, offshore oil drilling platforms; ② Modern transportation: highway guardrail, bridge, boat, container, train and railway facilities, automobile and airport facilities; ③ energy industry: hydraulic equipment, water tank, air tank, oil refining equipment, oil storage equipment (oil pipe, oil tank), power transmission and transformation equipment, nuclear power, coal mine; ④ Large scale industrial enterprises: papermaking equipment, medical equipment, food chemical equipment, inner and outer walls of metal containers, chemical industry, iron and steel, pipelines, storage tanks, mine smelting, cement plant equipment, ground, walls and cement components with corrosive medium ⑤ Municipal facilities: gas pipeline and facilities (such as gas holder), natural gas pipeline, drinking water facilities, garbage treatment equipment, etc ① The development of modern industry: it has created material conditions and broad market for heavy-duty anticorrosive coating It has provided a broad stage for heavy-duty anticorrosive coating from land (such as heavy-duty anticorrosive coating has been expanded to expressway, urban rail transit, nuclear power station, radio and television tower, etc.), from underground to space, from traditional industry to emerging industry For example, seawater desalination and seawater utilization projects have opened up a new field and market for heavy-duty anticorrosive coatings and applications In the Middle East, which is rich in oil, facing the sea and facing the desert, it is a typical water shortage area Industrial water for exploitation and oil must also turn to water treatment projects for seawater utilization According to statistics, in 1975, the daily output of fresh water in the world was 2 million m3 In 1994, it reached 20 million m3, which has increased 10 times in 20 years Desalination and seawater utilization facilities in the United States, Japan and Israel have to face seawater corrosion Due to the particularity of seawater corrosion, more strict requirements are put forward for the heavy-duty anticorrosive coatings used in these facilities As a result, the heavy-duty anticorrosive coatings for water engineering of desalination and seawater utilization came into being and will be developed accordingly Due to the increasing application of heavy-duty anticorrosive coatings, heavy-duty anticorrosive coatings have developed rapidly Among the coatings in developed countries, heavy-duty anticorrosive coatings account for 5% - 7% of the total amount of coatings ② Promotion of environmental protection: With the development of modern industry, the concentration of carbon dioxide and hydrocarbon in the air is increasing, which not only causes the global temperature to rise, but also causes one-time pollution to the environment, photochemical reaction between some organic matters and nitrogen oxides in the air, and produces toxic ozone, which causes more secondary pollution than one-time pollution According to statistics, about 20 million tons of hydrocarbons are released to the atmosphere every year around the world, most of which are caused by coating The amount of organic solvent discharged into the atmosphere during coating manufacturing is 2% of the coating amount, and the amount of organic solvent volatilized into the atmosphere during coating process is 50% - 80% of the coating amount In order to eliminate the air pollution caused by coating, the heavy-duty anticorrosive coating is developing towards the direction of high solid content (at present, the solvent-based heavy-duty anticorrosive coating with high solid content, most of which are epoxy based), solvent-free and water-based Among them, high solid content and water-based are the main factors in the development and application of heavy-duty anticorrosive coatings (for the chlorinated rubber heavy-duty anticorrosive coating used for Sydney port bridge, its solvent content is 500g / L, and its solvent volatilizes to the atmosphere, causing serious environmental pollution) The varieties with excellent comprehensive performance will be widely used, including: ① excellent corrosion resistance: good adhesion, excellent corrosion resistance and long service life According to this requirement, Xianghe coating company has developed and produced a new heavy-duty anticorrosive coating integrating epoxy heavy-duty anticorrosive coating and chlorosulfonated polyethylene rubber heavy-duty anticorrosive coating, which has excellent acid resistance, salt resistance, seawater resistance, aging resistance and other properties, so as to meet the market demand ② Excellent construction performance: it can be cured quickly at room temperature like the conventional anticorrosive coating, and the construction is simple, and the unskilled can operate it (the main reason why the chlorinated rubber heavy-duty anticorrosive coating can be widely used is this) The construction of Xianghe heavy-duty anticorrosive coating, which integrates epoxy and rubber, is basically consistent with the construction of ordinary two-component epoxy anticorrosive coating, and it is solidified at room temperature, so that ordinary constructors can master it ③ Excellent environmental protection performance: the solid content of traditional solvent based anti-corrosion coating can only reach 50-60%, while the solid content of high solid content heavy anti-corrosion coating can reach 70% - 80%, even 90% - 100% The solvent is reduced by nearly half, showing good environmental protection performance The solid content of heavy-duty anticorrosive coating produced by Xianghe company is more than 75%, some of them are even as high as 90%, which not only reduces the solvent pollution, but also reduces the use cost 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,
    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.