Corrosion and protection issues have attracted the attention of 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 6 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.
Compared with ordinary anticorrosion projects, marine anticorrosion is more demanding because of the more severe corrosion environment, more difficult anticorrosion requirements, and more technical difficulties. This has led to the emergence of heavy anticorrosive coatings. According to statistics, 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.
However, in the face of such an anti-corrosion coating market with so objective prospects, due to the relatively late development of China ’s national defense anti-corrosion coatings, there are only a few domestic brands. 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.
The emergence of new graphene materials is expected to change this situation. 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.
According to reports, Zhuhai Polycarbon Composite Materials Co., Ltd. has fully mastered the technology of graphene heavy-duty anticorrosive coatings. Using graphene's good electrical conductivity and lamellar overlap characteristics, graphene is introduced into zinc powder primer, and graphene is evenly dispersed with Zinc powder forms a good conductive network, which breakthroughly realizes that it still has excellent cathodic protection and anti-corrosion performance under low-zinc conditions. It has become a new scientific and technological product independently developed by China. Its product performance exceeds the highest standards of the world's marine heavy-duty anti-corrosion system. The manufacturing industry brings greater protection, and can save more than 30,000 tons of zinc powder resources each year.
In the first half of this year, Polycarbonate has started cooperation with Jiangmen Jiabaoli Chemical Group Co., Ltd., one of the largest domestic providers of coatings and coating solutions, in the field of graphene epoxy anticorrosive primers. I believe that in the future, in the market of heavy-duty anticorrosive coatings, not only can China's national defense anticorrosive coating brands catch up, but even on international platforms, they can also fight against international brand chambers.