As a high-end equipment manufacturing industry that is one of the strategic emerging industries, the development focus is on major complete sets of equipment manufacturing technologies, such as aerospace, marine engineering equipment and high-speed railway equipment. The wide application of chemical products such as cutting-edge composite materials, anti-corrosion coatings, and waterproof materials can provide protection for special high-end equipment working in space, ocean, and land.
Composite materials: weight reduction for aerospace "clothing" It is claimed that the reduction of 1 gram in aircraft quality is equivalent to saving 1 gram of gold. Designing a light outer garment is becoming a major trend in the world's aircraft manufacturing industry. Advanced composite materials have excellent performances such as high specific strength, high specific modulus, and fatigue resistance. Since the advent of the 1960s, advanced composite materials have rapidly gained wide application and have become one of the four aerospace materials.
Composite materials are rapidly developing into the basic structural materials of the aerospace industry. High-performance polymer-based composite materials account for 80% of their total use in the aerospace industry. Taking carbon fiber-based composite materials as an example, due to its unique properties such as high specific strength, specific modulus, low coefficient of thermal expansion, and high thermal conductivity, it is used as aerospace structural material and its weight reduction effect is very significant. It can also be used as a space shuttle door, robotic arm, and pressure vessel, which can greatly reduce the inert weight of rockets and missiles, both to reduce the launch weight and save on launch costs. In addition, satellite-expanded solar panels are mostly made of carbon composite materials.
In the future, the development of composite materials will comply with the ever-increasing demands of aerospace materials, and will develop in the direction of high performance, low cost, and multi-functionality. With the development of China's aerospace industry, composite materials will have broader application prospects.
Anti-corrosion coating: guarantee the "health and longevity" of the offshore platform
With the same metal material, the corrosion rate in the marine environment is 400 to 500 times higher than in desert areas. As a high-end equipment in the marine engineering equipment field, the offshore platform has long been in a harsh marine environment. Corrosion is a very prominent issue. Ocean platform anti-corrosion coatings provide a good "protective clothing" for offshore platforms.
At present, different anti-corrosion coating systems are used in different corrosion zones of offshore platforms. Above the platform deck, supporting systems consisting of inorganic/epoxy zinc-rich primer, epoxy cloud iron intermediate paint and polyurethane topcoat are mainly used; in the splash area of ​​the platform, epoxy scales or epoxy zinc-rich primers, epoxy asphalt paints are mostly used. Lacquer and epoxy-emulsion topcoat coating systems; the following parts of the platform waterline usually use the measures of coating and cathodic protection; most of them use the inorganic zinc-rich primer, epoxy intermediate paint and thick-coated epoxy coal-tar asphalt coating system. .
With the strengthening of global anti-corrosion protection, future anti-corrosion coatings for offshore platforms will develop in the direction of high performance, low cost, low pollution, and good construction. Experts pointed out that the application of thick-film anti-corrosion coatings, coatings with good cathodic protection, and IPN (interpenetrating polymer network structure) organic polymer anti-corrosion coatings will have broad prospects.
Waterproof material: guarding high-speed rails extending to the north and south of the river The waterproof material plays an important role in the waterproof system of the high-speed railway project and is an important technical means for improving the durability of the railway. The waterproof effect is directly related to the service life of the railway.
The Beijing-Tianjin High Speed ​​Railway, the first high-speed intercity high-speed railway built in China in 2005, uses a 2mm-thick sprayed polyurea elastic protective film waterproof material. This kind of waterproof material can avoid the damage to the railway caused by carbonation, chemical erosion, freeze-thaw and other factors, thus effectively prolonging the service life of the high-speed railway.
On July 1 this year, the Shanghai-Nanjing Intercity High Speed ​​Rail was officially opened and operated. The waterproof material of this major project was selected from MMA resin waterproof material, which is also the world's largest MMA waterproof project. MMA resin waterproof material has the advantages of strong coating film elongation, outstanding temperature and aging resistance, and strong coating adhesion. It is gratifying that the waterproof material in this waterproof project comes from domestic paint manufacturers. In recent years, methyl methacrylate resin waterproof material has been favored as a green environmental protection product that meets the requirements of international waterproof materials, and has been applied to Shanghai-Nanjing, Beijing-Tianjin, Wuhan-Guangzhou and other passenger lines.
The "Mid-and-Long-term Railway Network Plan" approved by the State Council clearly states that in the medium to long-term, China will build a four-horizontal and five-horizontal rapid passenger transportation corridor with more than 12,000 kilometers of passenger dedicated lines and three intercity rapid passenger transportation systems. The waterproof material with excellent performance will rapidly advance to the north and south of the motherland with the pace of China’s high-speed rail construction.
Composite materials: weight reduction for aerospace "clothing" It is claimed that the reduction of 1 gram in aircraft quality is equivalent to saving 1 gram of gold. Designing a light outer garment is becoming a major trend in the world's aircraft manufacturing industry. Advanced composite materials have excellent performances such as high specific strength, high specific modulus, and fatigue resistance. Since the advent of the 1960s, advanced composite materials have rapidly gained wide application and have become one of the four aerospace materials.
Composite materials are rapidly developing into the basic structural materials of the aerospace industry. High-performance polymer-based composite materials account for 80% of their total use in the aerospace industry. Taking carbon fiber-based composite materials as an example, due to its unique properties such as high specific strength, specific modulus, low coefficient of thermal expansion, and high thermal conductivity, it is used as aerospace structural material and its weight reduction effect is very significant. It can also be used as a space shuttle door, robotic arm, and pressure vessel, which can greatly reduce the inert weight of rockets and missiles, both to reduce the launch weight and save on launch costs. In addition, satellite-expanded solar panels are mostly made of carbon composite materials.
In the future, the development of composite materials will comply with the ever-increasing demands of aerospace materials, and will develop in the direction of high performance, low cost, and multi-functionality. With the development of China's aerospace industry, composite materials will have broader application prospects.
Anti-corrosion coating: guarantee the "health and longevity" of the offshore platform
With the same metal material, the corrosion rate in the marine environment is 400 to 500 times higher than in desert areas. As a high-end equipment in the marine engineering equipment field, the offshore platform has long been in a harsh marine environment. Corrosion is a very prominent issue. Ocean platform anti-corrosion coatings provide a good "protective clothing" for offshore platforms.
At present, different anti-corrosion coating systems are used in different corrosion zones of offshore platforms. Above the platform deck, supporting systems consisting of inorganic/epoxy zinc-rich primer, epoxy cloud iron intermediate paint and polyurethane topcoat are mainly used; in the splash area of ​​the platform, epoxy scales or epoxy zinc-rich primers, epoxy asphalt paints are mostly used. Lacquer and epoxy-emulsion topcoat coating systems; the following parts of the platform waterline usually use the measures of coating and cathodic protection; most of them use the inorganic zinc-rich primer, epoxy intermediate paint and thick-coated epoxy coal-tar asphalt coating system. .
With the strengthening of global anti-corrosion protection, future anti-corrosion coatings for offshore platforms will develop in the direction of high performance, low cost, low pollution, and good construction. Experts pointed out that the application of thick-film anti-corrosion coatings, coatings with good cathodic protection, and IPN (interpenetrating polymer network structure) organic polymer anti-corrosion coatings will have broad prospects.
Waterproof material: guarding high-speed rails extending to the north and south of the river The waterproof material plays an important role in the waterproof system of the high-speed railway project and is an important technical means for improving the durability of the railway. The waterproof effect is directly related to the service life of the railway.
The Beijing-Tianjin High Speed ​​Railway, the first high-speed intercity high-speed railway built in China in 2005, uses a 2mm-thick sprayed polyurea elastic protective film waterproof material. This kind of waterproof material can avoid the damage to the railway caused by carbonation, chemical erosion, freeze-thaw and other factors, thus effectively prolonging the service life of the high-speed railway.
On July 1 this year, the Shanghai-Nanjing Intercity High Speed ​​Rail was officially opened and operated. The waterproof material of this major project was selected from MMA resin waterproof material, which is also the world's largest MMA waterproof project. MMA resin waterproof material has the advantages of strong coating film elongation, outstanding temperature and aging resistance, and strong coating adhesion. It is gratifying that the waterproof material in this waterproof project comes from domestic paint manufacturers. In recent years, methyl methacrylate resin waterproof material has been favored as a green environmental protection product that meets the requirements of international waterproof materials, and has been applied to Shanghai-Nanjing, Beijing-Tianjin, Wuhan-Guangzhou and other passenger lines.
The "Mid-and-Long-term Railway Network Plan" approved by the State Council clearly states that in the medium to long-term, China will build a four-horizontal and five-horizontal rapid passenger transportation corridor with more than 12,000 kilometers of passenger dedicated lines and three intercity rapid passenger transportation systems. The waterproof material with excellent performance will rapidly advance to the north and south of the motherland with the pace of China’s high-speed rail construction.
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