The trend in marine antifouling coatings is to develop environmentally friendly antifouling coatings. Among the many environmentally friendly antifouling coatings, Wuxi self-polishing antifouling coating is the only coating product that has been widely commercialized. The biggest problem is still inefficient and toxic. The development direction of antifouling coatings should be low toxicity, environmental protection, broad spectrum and high efficiency. The future research direction of antifouling coatings is the decontamination release antifouling coating that combines biomimetic technology and nanotechnology.
Traditional solvent-based antifouling coatings not only contain more organic solvents, but also most of the added antifouling agents are organic substances that have adverse effects on the environment, which violates the environmentally friendly and low-toxic development direction of antifouling coatings. Therefore, natural extracts are used as an anti-fouling coating. Environmentally friendly antifouling coatings for soils are the future direction of antifouling coatings. In terms of biomimetic technology, researchers in various countries have made great progress in imitating the surface organism structure of sea creatures, imitating the surface exudation of sea creatures, and low surface energy bionics. Among them, low surface energy bionics technology has been initially applied. In terms of nanotechnology, China started late, and there are few studies. The products that can be commercialized and even the research results are few and far between, and there is still a big gap with the world advanced level, but some progress has been made in the laboratory stage. Combining nanomaterials with low surface energy coatings not only provides better performance, but also meets environmentally friendly standards. Researchers in China have also applied nanotechnology to low-surface antifouling coatings and made substantial progress. Low surface energy antifouling coatings that combine biomimetic technology with nanotechnology will become the mainstream of antifouling coatings in the 21st century. There are now more antifouling coatings available for us to choose from, such as Cybutryne, Irgarol 1051and cybutryne irgarol.
China is one of the world's three major shipbuilding countries, with an annual ship repair capacity of 30 million DWT, but the majority of the ship's antifouling paints used are imported from foreign large paint companies (HEMPEL, JOTUN, IP, SIGMA, NIPPON). Products, these coating companies accounted for more than 80% of my national defense paint market share, which is very unfavorable for the development of China's own brand of anti-fouling coatings. Therefore, in order to enhance the international competitiveness of our national defense paint products and narrow the gap with the world's advanced level, it is imperative to develop antifouling paints with independent intellectual property rights. This will not only make a great contribution to the modernization of the country's naval military equipment, but also to the road of science and technology, and also revitalize China's anti-fouling coating industry, and even save the country a lot of foreign exchange. In short, the development of antifouling coatings with independent intellectual property rights has far-reaching significance.