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    Home > Coatings News > Paints and Coatings Market > Graphene for high-performance coatings to create new market opportunities——— visit Suzhou Grefon Nanotechnology Co., Ltd. Chairman Liu Liwei.

    Graphene for high-performance coatings to create new market opportunities——— visit Suzhou Grefon Nanotechnology Co., Ltd. Chairman Liu Liwei.

    • Last Update: 2020-07-29
    • Source: Internet
    • Author: User
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    Liu Liwei Researcher, Institute of Nanotechnology and Nano Bionics, Suzhou, Chinese Academy of Sciences, Ph.Dtutor; Director of graphene Preparation and Application Task Force, Member of the National Graphene Standardization Promotion Working Group, Advisory Committee of the National Graphene Product Quality Supervision and Inspection Center, Vice Chairman of the Technical Innovation Strategy Alliance of Graphene Industry, Jiangsu Province, Member of the Standard Committee of the China Graphene Industry Alliance, Andain Materials Sub-Technical Committee of the National Steel Standardization Technical CommitteeParticipate in the drafting of graphene zinc powder coating industry standard and CSTM group standard "Measurement of graphene materials in coatings"In 2005, he received a Ph.Ddegree in condensed matter physics from the Institute of Physics of the Chinese Academy of SciencesPostdoctoral fellow at the Center for Nanotechnology at the University of Central Florida, 2006-2007In 2007, as the backbone of scientific research was introduced to the Suzhou Institute of Nanotechnology and NanoBionics of the Chinese Academy of Sciences, and won the nano-leading talents from Suzhou Industrial ParkIn August 2012, suzhou Grifon Nanotechnology Co., Ltdwas foundedGrefon has become a leading enterprise of high-quality thin layer graphene, has been a number of international and domestic well-known anti-corrosion coating enterprisesuppliersMore than 40 national invention patents have been applied for and 12 have been grantedHe presided over the completion of key projects of national natural science, surface-based gold projects, industrial support projects in Jiangsu Province, nanopilot projects in Suzhou City, participated in the Ministry of Science and Technology 973, the key deployment projects of the Chinese Academy of Sciences, the National Natural Science Foundation's major research projects nano-manufacturing projectsAlready at AdvMaterAdvFuncMaterACS nano Scientific Reports Phys Rev B Appl Phys Lett Small Nano Lett International high-quality journals such as Carbon publish the results of their work The application of new materials helps to promote the innovation and development of the coating industry, graphene in improving the performance and function of coatings has an important application, after years of technology and application development, graphene used in the field of coatings in the current situation and development trends? New materials refer to new or traditional materials after the improvement of excellent performance or new features of the material, the use of new materials is the coating industry high-quality development and transformation and upgrading of an important foundation Graphene technology change and coating enterprise transformation and upgrading to form a historic convergence, for the coating industry high-quality development has brought new market opportunities China's coatings industry has grown over 100 years of development and has exceeded the market size of more than 300 billion From the policy and regulations, standards, international competition, industry trends and other aspects, the coating industry from the previous high-speed development into the innovation-driven, green transformation, resource conservation, high-performance high-quality development stage High-quality thin layer graphene material, thickness is only a few atomic layers, all atoms, sub-parts have impermeability, compared with traditional materials, the same quality, with a larger layer barrier area Graphene has excellent force, conduction, thermal conductivity, in the coating to achieve uniform dispersion, high-quality thin layer graphene can be used as anti-corrosion, waterproof, weather-resistant, mechanical properties enhanced atomic layer barrier raw materials, is providing more excellent performance and more multi-functional coatings to provide important value Graphene has been in development for 16 years since British researchers discovered it in 2004, going through the process of research and development, validation, industrial amplification and a long market development cycle in the new materials industry Graphene materials were selected in the Strategic Emerging Industries Classification (2018) issued by the National Bureau of Statistics In the "First Application Demonstration Guidance Directory for Key New Materials" (2019 Edition) published by the Ministry of Industry and Information Technology, graphene modified anti-corrosion coatings were selected as cutting-edge new materials for use in bridges, steel structures, pipes, tanks and automobiles Around 2012, U.S researchers conducted basic research on the corrosion resistance properties of graphene directly covering metals, but in the process of product development and industrialization in real coatings, China's graphene large-scale manufacturing, graphene materials in anti-corrosion coating applications are in the international leading position China's high-quality graphene manufacturers, as well as innovative sense of internal and external coatings enterprises have played a leading role In the process of industrialization promotion, through the questioning, wait-and-see, try to actively promote the process of cognitive transformation In many practitioners, enterprises, institutions for many years of joint efforts, graphene in the coating industry application has formed a new trend of innovation and development, this trend from the technological changes and industrial development brought value and motivation Research and development, validation, scale production, products, standards, cases and markets have been made and harvested through many years of joint efforts by policy-making departments, research institutes, industry experts, investment institutions, numerous graphene, coatings and user enterprises, as well as standards and design institutions The Graphene Zinc Powder Coatings (HG/T 5573-2019), which has been approved for more than 3 years, will be implemented on July 1, 2020, with up to 35 companies participating in the drafting unit At present, there are many engineering construction anti-corrosion system requires high-performance graphene-based anti-corrosion coating, some design institutes began the introduction of graphene-based high-performance coatings, and some have adopted the group label and has been carried out for several years graphene anti-corrosion coating engineering applications At home and abroad with innovative awareness and ability of some well-known coating enterprises, after years of research and development, testing and trial production, more high-performance graphene zinc powder coating products will be promoted to market The industrialization of graphene-based high-performance coatings has entered a rapid development stage At home and abroad with research and development strength of enterprises almost all layout opened graphene-related coating product development, graphene-based solvent-based, water-based, powder and other coating products have also started to market Some coating companies have added new production lines and are also considering using high-performance graphene-related coatings directly as a strategic direction for their business development Road and bridge Steel structure anti-corrosion coating technical conditions (JT/T 722) Ministry of Transport industry standard revision draft also added high-performance graphene zinc powder coating It can be foreseen that in the future bridges, petrochemical facilities, storage tanks, rail transportation, construction steel structures, offshore, wind power, automobiles, etc will benefit from graphene modified anti-corrosion coatings long-lasting protection The technical integration of graphene and coatings provides what advantages and market opportunities can be offered for upgrading industrial anti-corrosion coating technology? Anti-corrosion coatings are widely used in large-scale industry, marine engineering, modern communication, petroleum and petrochemical, energy industry, municipal facilities and other fields In 2018, China produced nearly 5 million tons of anti-corrosion coatings, with a market size of more than 190 billion yuan Foreign enterprises occupy the domestic anti-corrosion coatings in the high-end market Domestic enterprises in the brand, technology, scale, system support and other aspects of the lack of advantages, but also in the high-end market with international well-known enterprises to compete At present, graphene modified anti-corrosion primer is a cost-effective industrial coating upgrade products, its technology and standard development has been initially mature, with a larger market space, including solvent-based and water-based coatings, including inorganic and inorganic coatings In addition, high-quality graphene to solve water-based, high-solid content, solvent-free, powder-based environmental protection coatings in the transformation of various technical problems, but also an important opportunity for technology and the market Epoxy-rich zinc coatings are an important and high-volume industrial anti-corrosion primer in coatings, and according to GosReports, the global epoxy-rich zinc coatings market reached $4.4 billion in 2019 Compared with those well-known foreign enterprises with a hundred years of development experience, China's industrial coating enterprises still have a big gap, regardless of talent accumulation, research and development input, system management, quality control and other aspects, technology accumulation and lack of core technology, so the main body of the industrial coatings market is still dominated by international famous enterprises, some even monopoly Since its application in the 1960s, there have been no major technological breakthroughs in epoxy-rich zinc coatings In 2007, The Haihong SeniorS Laboratory found that only one-third of zinc in epoxy-rich zinc primers worked In 2014, Haihong old people adopted hollow glass microbeads and activated zinc patented technology, improve anti-corrosion and construction performance, can be counted as epoxy zinc-rich a large rinth of a large technological progress Today, graphene zinc powder coating, through the fusion of graphene technology, zinc powder from the previous 80 servings can be reduced to 30, salt spray resistance increased by more than 3 times, and improve construction tolerance, paint film also has a very good thick film anti-cracking, inhibit corrosion spread performance, is undoubtedly 60 years of major technical breakthrough of epoxy-rich zinc coating Optimised formula design of graphene zinc powder coating, the use of a small amount of high-quality thin layer graphene, non-volatile fractions only 30 zinc powder, neutral salt spray performance is exceptionally excellent, can be up to 3,000 to 6 000 h (single coating, scratches, 90 m film thickness), Salt spray-resistant time is more than three times the C5 environmental requirements defined by ISO12944 and more than three times the standard for graphene zinc powder coatings (HG/T5573-2019) and zinc-rich primers (HG/T 3668-2009) Its performance has been comparable to or surpassing the performance of these traditional anti-corrosion primers such as organic epoxy zinc primer containing a large amount of zinc powder, inorganic epoxy zinc-rich primer, and cold-sprayed zinc At present, graphene high-performance coatings have been in the bridge, rail transportation, petrochemical, wind power, offshore, construction steel structure and other fields of penetration and should be used With graphene preparation, coating product development and market applications, the industrial chain gradually mature, will form graphene modified coatings as an upgraded product market trend In this process of upgrading, companies with a sense of innovation, technical capabilities and market resources will be the first to seize this new market opportunity Graphene zinc powder coating industry standard, graphene zinc-containing coating metal zinc content can be as low as 30%, can greatly reduce zinc metal resources The traditional concept of "the higher the zinc content, the better the anti-corrosion performance" should not be changed? Traditional zinc powder dosage concept, "zinc-rich" means good anti-corrosion performance, "low zinc" means "stealing materials", with the emergence of graphene zinc coatings, these understandings can be changed With graphene and a small amount of zinc powder to achieve excellent anti-corrosion performance, anti-corrosion performance is not directly proportional to the amount of zinc powder, there is no need to waste zinc powder in the future In the epoxy zinc-rich primer, due to the need for a large amount of zinc powder to form the electrical conductive pathway, to ensure corrosion resistance, the use of non-volatile metal zinc is required to be more, respectively, 60%, 70%, 80% (HG/T3668-2009) The content of zinc powder in epoxy-rich zinc coating determines the cost and performance In graphene zinc powder coating, the conductive pathway is composed of a small amount of graphene and a small amount of zinc powder, and graphene excellent layer barrier co-use, the use of a small amount of zinc powder can reflect a very good corrosion resistance In fact, the zinc content in graphene zinc powder coating is not the higher the better Zinc has limited reserves on Earth and is a depleted resource, with half of its total consumption used for metal corrosion protection According to USGS research, 220 million tons of global zinc reserves and 13.76 million tons of zinc consumption in 2019 have been used for only 16 years In 2019, China's zinc production is 4.3 million tons, while China's zinc reserves of 44 million tons are only enough for China to use for no more than 10 years, and China's zinc mines are dispersed and transportation is difficult to mine Therefore, the price of zinc powder is gradually rising This also determines the life limit of several anti-corrosion products such as hot galvanizing, epoxy-rich zinc, inorganic zinc rich, cold-sprayed zinc and other products Graphene zinc powder coating is the first C2 to C5 atmospheric corrosion and other levels of environment, zinc powder can be as low as 30% of the high-performance epoxy zinc powder coating industry standard, in promoting high-performance coating, resource conservation development is a milestone The promotion and replacement of graphene zinc powder coating products will save resources, improve cost-effective and promote the sustainable development of the industry throughout the anti-corrosion coating industry In addition to graphene zinc powder coatings, graphene for zinc-free coatings also have the advantage of improving corrosion resistance? Is there value in improving the performance of environmentally friendly types of coatings and reducing VOCs? Even in ordinary anti-rust paint without zinc powder, graphene-enhanced corrosion protection shows excellent performance By optimizing the use of high-quality thin layers of graphene, some products have improved salt spray resistance by 100% For environmentally friendly (water-based, solvent-free, powder) coatings, graphene can also help improve corrosion and construction performance For the automotive axle underside paint (water-based, solvent-based), water-based automotive electrophoresis paint, engineering machinery and rail transport water-based rust-resistant primer, graphene modified use, there have been cases show that salt spray resistance increased by nearly 100% For environmentally friendly water-based coatings, graphene can play an important role in improving the performance of salt spray, condensation and so on, and solve the short plate of water-based industrial coatings with insufficient corrosion resistance For powder coatings, the use of graphene enhances its ability to use in C5 environments For solvent-free, high-solid coatings, in addition to improving salt spray resistance, but also to its anti-cracking performance to improve the role In terms of reducing VOCs, the use of high-quality thin layers of graphene improves coating performance, reduces the amount of paint used, and reduces the number of coating repaintings or repairs, thereby reducing VOCs emissions Considering the high electrode potential of the carbon material, defective graphene comes into direct contact with the metal, as well as graphite, carbon black fillers, electrostatic paint and metal composition of the original battery caused corrosion In graphene zinc powder coating applications, will there be accelerated corrosion phenomenon? Is there accelerated corrosion after zinc powder has been exhausted? Graphene zinc powder coating is not the same as the structure and principle of the above two cases In a reasonably formulated graphene zinc powder coating, there is no accelerated corrosion problem Because the occurrence of accelerated corrosion requires two prerequisites, corrosion media seeps into the steel interface, graphene and steel through the electrolyte contact In graphene zinc powder coating, graphene addition is very small, only a few thousandths of the dry film, graphene in the resin substrate is far from reaching the pass-through penetration threshold, graphene is wrapped in epoxy resin and then contact with other materials
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