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Anticorrossive coatings

With the development trend of infrastructure design from reinforced concrete to steel structure, coatings are facing new requirements, especially in the anti-corrosion protection life of coatings, coating performance of materials, seasonal versatility of materials and environmental friendliness.
Data show that China's annual economic losses caused by metal corrosion are relatively significant, accounting for about 5% of the gross national product! The oil and gas system is about 10 billion yuan, the coal industry is about 5.5 billion yuan, and the power system is about 1.6 billion yuan. The total industrial output value of the entire paint industry minus raw materials is only half of it, which can be seen that the space of anti-corrosion coatings can be done.

Today's anticorrosive coating products are widely used in the petroleum industry, coke industry, organic synthetic chemical industry and other sectors of the product as raw materials, more and more quality, the scope of application is also expanding, how to further accelerate the development of the field of anticorrosive coating, so that its better position in all walks of life service, which is placed in front of the paint people both glorious and arduous task.
In the broad market environment of anticorrosive coatings, only by bravely taking technological innovation as the driving force, taking environmental protection as its own responsibility, constantly researching and developing new technologies and new products, can it continuously expand the application scope of anticorrosive coatings and contribute its own strength to China's infrastructure and Marine chemical industry.
Anticorrosive coatings are widely used in modern industry, transportation, energy, Marine engineering and other sectors. According to the corrosion resistance of the coating film and the use requirements, it is usually divided into two categories: conventional type and heavy anti-corrosion type.

Conventional anticorrosive coatings play an anti-corrosion role in metals and protect the life of non-ferrous metals under general conditions; Heavy anticorrosive coatings refer to a class of anticorrosive coatings that can be applied in a relatively harsh corrosion environment and have a longer protection period than conventional anticorrosive coatings.

1, the product to the multi-functional direction

According to incomplete statistics, there are more than 1000 kinds of anti-corrosion coatings in China, and the traditional classification by resin is epoxy, epoxy asphalt, asphalt, chlorinated rubber, chlorosulfonated polyethylene, polyvinyl chloride, pervinyl chloride, urushiol resin, ethyl silicate, high chlorinated polyethylene, polyurethane, polyurethane asphalt, phenolic, alkyd paint and so on.
In recent years, there have been many excellent modified resin anticorrosive coatings, such as alkyd resin modified polysulfide rubber modified epoxy waterproof anticorrosive coatings and acrylic acid modified alkyd enamel for railway passenger car boxes, while combining China's own characteristics of anticorrosive coatings, such as titanium urushiol, urushiol epoxy, urushiol silicon heavy anticorrosive coatings. Since the 1990s, a new generation of anti-corrosion coating system has gradually occupied the mainstream of market research and application, and environmental protection anti-corrosion coatings such as water-based epoxy and water-based acrylic coatings have been published, which has enriched the types of anti-corrosion coatings, and gradually developed in the direction of multi-function.

2, the market demand and wide range of applications

According to incomplete statistics, there are about 700, of which there are nearly 100 manufacturers specializing in the production of anti-corrosion coatings, but the scale is not large, and the annual output of more than 1,000 tons of only a few dozen. These production enterprises are mainly concentrated in the coastal provinces and cities of China and the central south region. Due to the differences in the natural environment and development characteristics of various provinces and cities, the varieties and uses of anti-corrosion coatings are not the same.
At present, China's anticorrosive coatings are mainly used in chemical and petroleum industry, railway, highway and bridge, metallurgical industry, electric power and energy industry, machinery and textile industry, industrial product field, automobile, ship and container industry. Among them, the largest demand industry for the chemical and petroleum industry, it includes oilfield facilities, oil pipelines, offshore platforms, petrochemical plant steel structure and reinforced concrete structure anticorrosion; At the same time, the new construction and maintenance of railway and road Bridges are also the key areas of anti-corrosion coating applications, in addition, the field of industrial products and Marine anti-corrosion fields such as automobiles and ships are also the largest demand points in the anti-corrosion coating market.

3. Environmental protection anticorrosive coatings have attracted much attention

At present, China's anticorrosive coating is moving along the direction of high performance, high efficiency, low energy consumption and low pollution, and some water-based anticorrosive coating manufacturers use low-pollution raw materials for production, anticorrosive coating enterprises have eliminated the use of prohibited various coating raw materials, replaced by more environmentally friendly raw materials products, in order to achieve the purpose of energy saving, environmental friendly products.
It is believed that in the next few years, Marine coatings, oil platforms, container coatings, chemical anti-corrosion coatings, railway, highway Bridges, steel structure anti-corrosion coatings, urban infrastructure coatings are still hot market, domestic anti-corrosion coating enterprises should continue to strengthen the professional level, provide high-quality products and perfect services, so as to make greater efforts and contributions to China's anti-corrosion market.

4. Marine anti-corrosion coatings are growing rapidly

Nowadays, the scale of Marine development continues to expand, and the cross-sea bridge as the infrastructure for Marine development will continue to be built, and these Marine structures need to have a long anti-corrosion life, which will bring a huge market for Marine anti-corrosion coatings. In addition, with the development of a large number of subsea oil fields, pipelines to transport oil and gas will also appear one after another. In recent years, China's port infrastructure construction has accelerated significantly, and the country is also actively planning and building offshore wind power, which have brought new development opportunities for the Marine anticorrosive coatings market. At present, China's Marine anticorrosive coatings manufacturers are moving towards the development of green, resource-saving, high-performance anticorrosive coatings. In the future, we will also develop anti-corrosion coatings with high temperature anti-corrosion, anti-static, high elasticity, non-toxic and other multi-functions. According to industry speculation, China's Marine anti-corrosion coatings market in the ship and container manufacturing industry and cross-sea Bridges, offshore oil platforms and coastal port construction and other factors, will grow at an annual rate of more than 30%.

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