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    Home > Coatings News > Paints and Coatings Market > Did so long chemical, actually do not know what is heavy anti-corrosion paint?

    Did so long chemical, actually do not know what is heavy anti-corrosion paint?

    • Last Update: 2020-11-29
    • Source: Internet
    • Author: User
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    Heavy anti-corrosion coatings are much higher than ordinary anti-corrosion coatings in terms of technical content and protective properties, and are widely used in important areas related to national development strategies, such as ships, containers, petrochemicals and railway infrastructure, which provides a broad market space for the development of heavy anti-corrosion coatings.
    this paper introduces the concept, characteristics and types of heavy anti-corrosion coatings, discusses the research and development and application of heavy anti-corrosion coatings, and on this basis, looks forward to the future development trend of heavy anti-corrosion coatings.
    : The development
    modern industrial technology provides a broad space for heavy anti-corrosion coatings
    china
    . The development of modern science and technology, such as metal and non-metal protection theory, modern surface technology, emerging synthetic materials, rust-proof pigments, advanced coating equipment and modern testing technology, provides good technical material conditions for heavy anti-corrosion coatings, and promotes the progress and development of heavy anti-corrosion coatings.
    can be said that the level of development of heavy anti-corrosion coatings marks a country's level of anti-corrosion coatings and even marks a country's level of scientific and technological development.
    with the rapid development of China's transportation, energy, construction and other industries, China's defense paint industry will be further developed.
    1, introduction to heavy anti-corrosion coatings
    heavy anti-corrosion coatings: its English name is heavy-duty coating, refers to the relatively conventional anti-corrosion coatings, can be used in relatively harsh corrosion environments, and has a longer protection period than conventional anti-corrosion coatings a class of anti-corrosion coatings.
    2, heavy anti-corrosion coating product characteristics
    can be used under harsh conditions, and has a long-lasting corrosion life,
    heavy anti-corrosion coatings in the chemical atmosphere and marine environment, generally can be used for 10 years or more, even in acid, alkali, salt and solvent media, and at a certain temperature conditions, can be used for more than 5 years.
    filming is an important sign of heavy anti-corrosion coatings.
    important sign of the standard of
    heavy anti-corrosion coating is thick filmization, compared to the conventional anti-corrosion coating 100 m to 150 m, anti-corrosion coating dry film thickness reached 200 m or more, and even some special coating dry film thickness reached an amazing 2000 m (2 mm). Thick anti-corrosion coatings provide a reliable guarantee for the long life of coatings.
    the main differences between heavy anti-corrosion coatings and conventional anti-corrosion coatings:
    has high technical content, technical difficulties, involving many aspects of technological progress and product development; Multidisciplinary only and intersection of instruments and management, his technology comes from the synthesis of high resin resistance, the application of high-efficiency dispersants and fluidizers, the development of new anti-corrosion impermeable pigments and fillers, advanced and special test equipment and other supporting measures.
    3, types of heavy anti-corrosion coatings

    thick-film epoxy zinc-rich primer, epoxy cloud iron rust-proof paint, epoxy glass scales, epoxy coal asphalt paint, epoxy floor paint.
    vinyl chloride paint
    primer, finish, machine paint, hammer paint, fireproof paint, anti-corrosion paint, varnish, perchloroethylene putty.
    (chlorinated rubber paint)
    chlorinated rubber all colors of paint, chlorinated rubber aluminum powder anti-rust primer, chlorinated rubber anti-rust primer, chlorinated rubber iron-red aluminum powder anti-rust paint, chlorinated rubber bottom anti-fouling paint.
    acrylic paint
    acrylic polyurethane cover varnish, all colors of acrylic polyurethane magnetic paint, acrylic road line paint.
    fluorocarbon paint
    all kinds of fluorocarbon anti-corrosion paint, metal fluorocarbon paint, fluorocarbon exterior paint.
    "alcohol paint"
    mica iron oxide anti-rust paint, all colors of aolic acid hull paint, all kinds of aleate magnetic paint.
    Silicone high temperature paint
    all colors of silicone self-drying paint, all colors of silicone drying paint, silicone high temperature insulation paint, aluminum powder high temperature paint, mulator high temperature paint.
    solvent-free anti-corrosion coating
    solvent-free epoxy glass scale heavy anti-corrosion coating, solvent-free epoxy coal asphalt coating, solvent-free pipe wall resistance paint, solvent-free self-leveling paint.
    special anti-corrosion paint
    ethylene phosphate primer, inorganic zinc-rich primer, water-based inorganic zinc-rich primer, glass paint, template paint.
    4, the research and development and application of heavy anti-corrosion coatings
    modern society energy shortage, environmental pollution phenomenon is serious, sustainable development and environmental protection issues become the mainstream of today's society, so
    heavy anti-corrosion coatings must also be towards environmental protection, energy conservation, efficient direction.
    Specifically, on the basis of traditional conventional anti-corrosion coatings, the following excellent performance varieties have been developed:
    water-rich zinc-rich heavy anti-corrosion coatings:
    as one of the most common primers in modern heavy anti-corrosion coating systems, zinc-rich coatings in corrosive environments use the sacrifice of zinc powder to conduct the coating, in order to achieve the effect of protecting the metal substrate, so the zinc powder content of its dry film can reach about 80% to 95%. Zinc-rich coatings can be divided into organic zinc-rich coatings and inorganic zinc-rich coatings. At present, the commonly used organic zinc-rich coating is mainly epoxy resin as the base material, because of its construction of the metal surface treatment requirements are low, strong adhesion and so on, so widely used in various anti-corrosion fields.
    Epoxy modified coatings:
    epoxy resins are thermo-solid resins with two or more epoxy groups on the large molecular chain, with good film-forming properties and excellent corrosion resistance. Each year, more than 40% of the world's epoxy resins are used in the production of epoxy anti-corrosion coatings, widely used in a variety of severely corrosive environments of steel buildings corrosion protection. In order to adapt to the increasingly demanding corrosive environment, the researchers enhanced the compatible of polysilicaene in epoxy resin by adding a capacity enhancer (the joint copolymer of methyl acrylic and sioxane) to the system, and the mechanical properties of the anti-corrosion coating film layer were greatly improved.
    Fluorocarbon coatings:
    fluorocarbon coatings are mainly organic fluoropolymers as a film resin of a normal temperature curing coating, the current market commonly used in normal temperature cured fluorocarbon coatings mainly using resin fluoroolefin-vinyl ether copolymer (FEVE) and end hydroxyfluoropolymer ether (PF-PE) mainly. Because its fluorocarbon resin contains a special C-F group, which gives fluorocarbon coatings both superior weather resistance, chemical resistance and heat resistance, as well as excellent corrosion resistance, it has gradually become the main representative of long-lasting maintenance-free engineering external coatings and high-performance anti-corrosion coatings.
    Polypeptine Heavy Anticorrosive Coatings:
    Since the late 1980s, Huntsman Corporation of the United States has developed an innovative spray polypropyl elastomer technology based on the active hydrogen parts and isocyanides of endoamide, diamine chaining agents The acid component reacts with the advantages of fast curing, small environmental impact during construction, very high wear resistance, anti-aging and corrosion resistance, and has been widely used in the fields of power construction, petroleum and petrochemical anti-corrosion, building waterproofing and so on because of its excellent comprehensive anti-corrosion performance.
    In general, heavy anti-corrosion coatings as anti-corrosion coatings, since the 1960s and 1970s began to apply, has been rapid development, the application of more and more extensive, especially such anti-corrosion problems further promote the revolution of anti-corrosion coatings technology,
    Heavy anti-corrosion coatings from bioengineering, petroleum, chemical and other industries to absorb nutrition, graft high-tech, so that heavy anti-corrosion coatings in the emerging marine engineering, modern transportation, energy industry, large-scale industrial enterprises, municipal facilities and other fields have been widely used, the development prospects are very attractive.
    5, China's heavy anti-corrosion paint development status
    In recent years, my defense anti-corrosion paint has made great achievements, paint production and sales and technical performance have been greatly improved, as of 2014, China's paint production and sales, heavy anti-corrosion paint production and sales have become the world's first. In the development process of anti-corrosion coatings, the country in energy conservation and emission reduction, environmental protection, low-carbon construction and other aspects of the healthy development of the paint industry has played a great role in promoting, at the same time, the anti-corrosion coatings industry has put forward higher requirements.6, The development trend of China's industrial anti-corrosion coatings
    1) low-carbon economy, energy conservation and emission reduction, green environmental protection is still the direction of the development of heavy anti-corrosion coatings.
    With the increasing awareness of environmental protection, coatings companies are encouraged to develop alternatives to traditional solvent-based coatings (high solids, solvent-free and water-based anti-corrosion coatings) and to develop alternatives to traditional anti-corrosion primers with heavy and toxic heavy metal pigments (e.g., the development of compound phosphates) Anti-corrosion coatings based on anti-rust coatings, replacing anti-corrosion primers containing heavy metal pigments such as red dan, developing environmentally friendly long-lasting anti-fouling coatings, developing low-surface treatment technology, developing new processes and technologies for energy-saving and emission-reduction coating, and limiting energy-consuming coating equipment and processes. In recent years, the use of environmentally friendly anti-rust pigments to replace traditional anti-rust pigments has become the current development direction of environmentally friendly heavy anti-corrosion coatings, but to completely replace the traditional toxic anti-rust pigments, the theory and application of non-toxic anti-rust pigments need to increase research and development efforts.
    2) strengthen the integrated research of coating to ensure the reliability of the product.
    three-point paint, seven-point construction. Paint itself can be said to be a semi-finished product, combined with coating will eventually become a finished product, it can be seen the importance of coating quality, coating quality directly determines the final engineering quality. So far, the integrated system management of coating coating is still the most urgent task in China's coating industry. In the development of coating products must take into account the research of coating process, only after the realization of coating integration, the final product can achieve "reliability", at the same time, the new coating process, coating technology will also promote the upgrading of coating products. In recent years, the surface treatment cost and labor cost of substrate before coating have gradually increased, which has promoted the development of low-treatment surface primer products, and the wet sand blasting and high-pressure water rust removal process has led to the development of wet rust surface primer. Of course, the new coating process also put forward higher requirements for the construction performance of coating products, which also promotes the performance of heavy anti-corrosion coatings. Comprehensive above analysis, is to strengthen the industry's coating norms, improve technical service capabilities, the establishment of high-quality technical service team.
    3) Multi-functional
    single function of heavy anti-corrosion coatings has been far from meeting the huge needs of the modern coating industry, heavy anti-corrosion coating function diversification has become imperative. Such as composite ceramic anti-corrosion coatings, conductive polyphenylamine heavy anti-corrosion coatings, self-healing heavy anti-corrosion coatings, nano-composite powder zinc seepage aggravated anti-corrosion coatings. In order to promote the development and product upgrading of heavy anti-corrosion coatings and seize the commanding heights of the development of heavy anti-corrosion coatings in the world, we must pay high attention to the multi-functionalization of heavy anti-corrosion coatings.
    7, conclusion
    With the continuous development and maturity of heavy anti-corrosion coating technology, its development prospects will be more and more broad, at the same time, the scale of market competition in this field will also expand, in this context, the domestic paint industry manufacturers still have a long way to go. Therefore, following the concept of green, environmental protection, universities, energy conservation, strengthen the core innovation of enterprises, grasp the market and professional segmentation opportunities, pay attention to coating and application, will become the key to the development of domestic enterprises heavy anti-corrosion coatings.
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