It is estimated that about 20% of metal materials in the world cannot be recycled due to corrosion. Therefore, the problem of metal corrosion and protection has attracted universal attention from countries around the world. Relevant data show that the annual economic loss due to corrosion in the world is as high as US $ 1 trillion, which is about six times the total economic loss caused by natural disasters such as earthquakes, floods, and hurricanes. The annual economic loss due to corrosion in China amounts to 1.2 trillion yuan, and about 441 bird nests, 7 Three Gorges projects, and 46 Qinghai-Tibet railways are built. The loss caused by corrosion has always troubled various industries around the world, and marine corrosion is particularly severe.
Anti-corrosion market demand is increasing, market economy volume will exceed one trillion
At present, the corrosion problem is mainly solved by coating engineering equipment with anticorrosive coatings. As a "bullet jacket" to resist corrosion, the market demand for anticorrosive coatings is increasing. In China, especially the petrochemical industry, pipeline transportation, marine engineering and other industries that have strict requirements on anti-corrosion specifications, the demand for anti-corrosion materials and heavy anti-corrosion coatings has maintained a sustained and stable growth trend.
During the 13th Five-Year Plan period, China ’s coatings industry ’s average annual output growth bottom line is about 6.5%. By 2020, China ’s coatings industry is expected to grow to about 560 billion yuan in total output value, and its total output is expected to grow to about 22 million tons.
Among them, heavy anticorrosive coatings are widely used in engineering equipment and facilities under severe corrosive conditions as coatings that can achieve a longer protection period than conventional anticorrosive coatings in a relatively harsh corrosive environment. With the national exploration and development of deep-sea resources and the implementation of the strategic goal of "going to the deep ocean", heavy anticorrosive coatings will have a broader market volume.
After analyzing the data in recent years, we found that from 2010 to 2017, the sales revenue of China's heavy anticorrosive coatings market showed a volatile growth trend, and the growth situation was roughly similar to the total industrial output value. In 2017, the heavy anti-corrosion coating industry realized sales revenue of 88.465 billion yuan, an increase of 14.0% year-on-year.
According to the forecast analysis of the “Forecast of China ’s Heavy-duty Anticorrosive Coatings Industry from 2018 to 2023 and the Analysis of Leading Business Management Report” by the Foresight Industry Research Institute, by 2023, the heavy-duty anticorrosive coatings industry will achieve sales revenue of 198.1 billion yuan.
High-end anticorrosive coatings are difficult to find domestic brands
China has a 100 billion-level anti-corrosion coating market, but the domestic anti-corrosion market structure is another picture. Taking the marine heavy-duty anticorrosive coatings market as an example, foreign companies such as AkzoNobel, PPG, Haihong, Jotun, Japan's Sino-Tutorial, and Kansai, Japan have basically divided up 80% of the market share. In 2017, Haihong Elderly, Japan ’s Sino-Tuco, Japan ’s Kansai and South Korea ’s KCC accounted for an astonishing 95% in the container heavy-duty anti-corrosion coating market. Foreign giant coating companies have basically formed a competitive pattern that relatively monopolizes the domestic market. Even if the market for heavy-duty anticorrosive coatings is growing at a high rate every year, it brings a certain opportunity for the growth of domestic enterprises, but due to the gap in technology, domestic anticorrosive brands obviously lack market competitiveness.
As a developing country, although China's economic and technological development has made great progress, this does not mean that all technologies can compete with international chambers, at least China is not in the high-end heavy anti-corrosion field. For historical reasons, the development of China ’s national defense corrosion coatings started late, and the international community ’s long-term blockade of Chinese technology, China ’s national defense corrosion coating technology has a lot of road to grow.
It is understood that in the global heavy anti-corrosion industry chain, from raw material formulation to technical research and development in many chain links, Chinese coatings companies can only rank in the low-end first echelon. The lack of independent intellectual property technology, lack of corresponding technical standards, and iterative lags in production equipment are very unfavorable to the long-term development of China's blue industry.
Today, some domestic large-scale and key engineering projects can see foreign brands when they require high-standard anti-corrosion treatment technology. For example, in the world's largest coal chemical industry, the Flour project, heavy anticorrosive coatings from AkzoNobel and Jordan are specified. AkzoNobel coatings are also used in the relevant anticorrosive and fireproof coatings of Shanghai's tallest building in China. The above examples are endless. This key resource, which has been held by foreign paint giants for a long time, is like a throat that is choked at any time. Once a problem occurs, only a loss of corrosion is inestimable.
Well-deserved king of new materials graphene promotes new changes in the anticorrosion industry
Graphene, as a new type of nanomaterial, has the reputation of "the king of new materials". Its good barrier properties and shielding properties, as well as excellent electrical conductivity, thermal conductivity, ultra-thinness, and large specific surface area, make it an improved corrosion protection. Naturally functional materials for coating performance and reducing the cost of anticorrosive coatings.
Many authoritative experimental data show that graphene plays a particularly important role in anticorrosive coatings as a key material. It can effectively block the external environment and corrosive substances from penetrating and diffusing into metal substrates, and form a dense protective layer with anticorrosion. Good effect, low coating thickness, high adhesion, light weight, good mechanical properties, excellent salt spray resistance, long life and low cost. It is a good upgrade alternative to traditional anticorrosive coatings. Once graphene is successfully applied in anticorrosive coatings, it will greatly improve the negative impact of corrosion loss on economic development, and it will also become a new bright spot and a new driving point for industrial anticorrosive coatings.
In the "Graphene Technology Patent Analysis Report 2018" released recently, China has the largest number of patent applications for all graphene-related technology patents in the world, reaching 37,521, ranking first in the world, occupying a 66.5% share. . The support of policies, the driving of technology, and the entry of capital have brought new opportunities for China's scientific and technological innovation “curve overtaking”, and also ushered in new opportunities for change in China's industrial anticorrosive coatings reform.
It is understood that the domestic graphene anticorrosive coatings have become mature. With the expansion of market demand for related technology research and landing application products and the vigorous promotion of coatings companies, graphene anticorrosive coatings are gradually being recognized by relevant companies. It is worth mentioning that, under the severe situation of "foreign enemies", graphene companies and paint manufacturers have tacitly launched in-depth cooperation in research and development technology and production technology.
In the first half of this year, Zhuhai Polycarbonate Composites Co., Ltd., which has extensive research and development experience in graphene, and Jiangmen Jiabaoli Chemical Group Co., Ltd., one of the largest domestic paint and coating solution providers, launched a graphene epoxy anticorrosive primer. Cooperation in the field of lacquer. I believe that in the future, in the high-end anticorrosive coatings market, China ’s national defense anticorrosive coatings brands can not only catch up, but also compete with international brands on the international platform.
Graphene anticorrosive coating has obvious advantages and outstanding economic and environmental protection effects
According to Mr. Chen Xiaogang, Chairman of Zhuhai Polycarbon Composite Materials Co., Ltd., “Compared to traditional heavy-duty anticorrosive coatings, graphene anticorrosive coatings have greatly improved performance and have environmental and cost advantages that traditional anticorrosive coatings cannot match.” As we all know, Corrosion is caused by the contact of metal surfaces with air, water or other corrosive media. The main solution to corrosion is to coat the metal with physical insulation, chemical and electrochemical reactions to achieve the purpose of corrosion protection. At present, in the field of heavy anti-corrosion of steel structures, zinc-rich coatings are commonly used in the world to deal with corrosion. Because the electrode potential of zinc is lower than that of steel, steel is not easily corroded by the sacrificial anode. However, the use of a large amount of zinc powder will not only increase the increase in coating. Installation cost will also bring serious "zinc pollution".
The characteristics of graphene materials make them have natural advantages in terms of physical and electrochemical corrosion protection. The graphene sheet structure is layered and staggered, and a "maze-like" shielding structure can be formed in the coating, which can effectively inhibit the corrosion of media. Wetting, penetration and diffusion, improve the physical barrier properties of the coating, at the same time, the conjugate structure of graphene makes it have a high electron mobility, showing good electrical conductivity, and its sheet structure can also ensure that Better electrochemical contact forms a strong conductive network, which in turn can achieve the same cathodic protection with less zinc powder.
In the formula of graphene anticorrosive coatings, mainly refers to powders whose anticorrosion principle is based on shielding. All can be modified with graphene, and the amount of graphene added is only 0.5% -2%. The significance of reducing the cost and improving the environment by replacing 30% -60% of anti-corrosion and anti-rust fillers is evident.
Time, geography, people and gathering together Polycarbonates enters graphene anti-corrosion "fast lane"
According to CGIA Research forecast, by the end of 2018, China's graphene anticorrosive coating market will reach 500 million yuan. In 2020, the penetration rate of China's graphene anticorrosive coatings in industrial anticorrosive coatings will exceed 1%, will reach 3 billion yuan, and will reach 48 in 2022 100 million yuan, graphene anticorrosive coatings are expected to help domestic anticorrosive coatings enter the international high-end market.
Since the birth of graphene in 2004, in just a few decades, graphene has developed into a very large industry with a trillion-scale volume. In China, graphene has even become a national strategic industry, with unprecedented support from various policies and industry funds. Governments at all levels have also introduced corresponding supporting policies and measures. Various graphene industry alliances, research institutes, innovation centers, Businesses have sprung up.
As early as last year, Zhuhai Polycarbon Composite Materials Co., Ltd. has successfully realized the commercialization of graphene anticorrosive coatings. Polycarbon relies on its unique physical method graphene mass production patented technology, and through continuous accumulation of experience and practical applications, successful research and development Graphene oily and water-based anticorrosive coatings. According to the test report issued by the Chemical Industry Synthetic Materials Aging Quality Supervision and Inspection Center, the graphene heavy anticorrosive coatings produced by Zhuhai Polycarbon Composite Materials Co., Ltd. are resistant to salt spray under the standards of GB / T1771-2007 and GB / T 1766-2008. The aging time can reach 3600 hours, and the salt spray time of the composite coating composed of graphene anticorrosive primer, middle paint and topcoat exceeds 9000 hours. Break through the 800-1000 hours salt spray resistance limit of traditional epoxy zinc-rich coatings, and realize the process of domestic heavy-duty anticorrosive coatings becoming high-end in one fell swoop.
Through previous reports, we found that Zhuhai Polycarbon Composite Materials Co., Ltd. not only has extensive coverage in the field of graphene anticorrosion, but also occupies an important technical position in new carbon materials, mechanical lubrication, electric heating, power energy and other fields. It is understood that Polycarbon has a number of patented technologies for mass production of graphene, and it is also one of the few companies in the world that can achieve large-scale production at a cost generally accepted by the industry and truly achieve "zero emission" graphene production and application research and development.
At present, the emergence of graphene anticorrosive coatings makes it difficult to improve the situation of China's national defense corrosion industry being controlled by foreign companies for a long time. The rise of the anticorrosive coatings industry cannot be separated from the support of graphene technology, coatings manufacturers, policy guidance and application ends. Speaking of graphene anticorrosive coatings, the road ahead is bright, but the road is still tortuous. In the industry, more companies like polycarbons are needed to promote the development of graphene heavy-duty anticorrosive coatings in all aspects of technology development, environmental performance assessment, standard formulation, engineering application and industrialization.
During the actual visit, we found that the product-side application of graphene anticorrosive coatings is not as popular as online promotion, but Mr. Chen Xiaogang, chairman of Zhuhai Polycarbonate Composites Co., Ltd., revealed to us that Polycarbonate Composite has successively cooperated with "China Three "Barrels of oil", three leading companies in the petrochemical industry of PetroChina, Sinopec and CNOOC had close contact. Among them, in contact with CNOOC, a preliminary coating testing cooperation has been reached. Graphene anticorrosive coatings will be the first to be applied to large steel structures of CNOOC Zhuhai Natural Gas Power Generation Co., Ltd. Chen Xiaogang said: "The successful conclusion of this cooperation with CNOOC means that domestic anticorrosive coatings have finally been recognized by state-owned enterprises, confirming that the performance of polycarbon graphene anticorrosive coatings is indeed better than traditional anticorrosive coatings. , We will be more confident to meet new challenges. "
The emergence of new domestic graphene heavy-duty anticorrosive coatings is like a timely rain, which not only improves the anticorrosive quality of domestic anticorrosive coating products, but also fills the market gap of domestic high-end anticorrosive brands. This will ensure the safe service of marine equipment, marine engineering and major national infrastructure, promote the industrial upgrade of anticorrosive coatings, impact the monopoly position of international brands in the domestic market, enhance the competitiveness of China's blue economy industry, and ensure national security and security. Marine economic development strategies are of great strategic significance.