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Strong technology Special engineering plastics refer to engineering plastics with higher comprehensive performance and long-term use temperature above 150°C. Including polyphenylene sulfide, polysulfone, polyimide, polyarylate, liquid crystal polymer, polyether ether ketone, fluorine-containing products. From a technical perspective, the gap between China and foreign developed countries is not great. Since the birth of special engineering plastics was listed as a strategic material by foreign countries, it imposed a strict blockade on China. Therefore, in order to develop its national defense military and related civilian high technology, China has invested a lot of energy in implementing independent research and development, almost every special project. Plastic varieties have been studied in China.
In China, research and development of polyimides have begun almost simultaneously with the world, and research and application in certain fields have now reached advanced levels in the world. From the early 1970s, China began to research and develop polyetheretherketone. Under the premise that the main physical properties of products reach the international level, all technologies, raw materials, and major production equipment are based on the domestic market, thus achieving low-cost economic benefits. This makes the price of domestic polyetherether ketone up to 500 yuan/kg in the domestic market, and the export price is 55 US dollars/kg, which has the strong competitiveness to enter the international market.
The overall view of the disadvantaged industry is that although the gap between domestic technology and the developed countries in the world is not large, it is obviously insufficient in terms of the transformation of technology into scale for production, which has opened a gap with foreign countries.
Taking polyimide as an example, in the 1960's, there were products coming out of the world, Changchun, and molding materials. The developed countries in the two foreign countries are basically of the kiloton scale. At present, the world consumes about 45,000 tons of polyurethane, and the consumption in the United States, Western Europe and Japan has exceeded 30,000 tons per year, and there are a wide variety of foreign products used in films, Moldings, coatings, adhesives, enamels, foams, and fibers.
Polyphenylene sulfide is the most widely used and the most widely used product in the world. The annual global production capacity is about 80,000 tons, and the output is about 55,000 tons. The output and demand are basically balanced, and the demand is 20% to 30% annually. Increased speed. The current annual production capacity of polyphenylene sulfide in China is only about 4,000 tons, and the actual output is only 1,500 tons.
The wide range of special engineering plastics in the civilian field has become a hot spot of the market with its excellent comprehensive performance. While it has obtained a large number of applications in various high-tech fields, it is also expanding its space in the civilian field.
As the current electronic and electrical products are developing toward the trend of small size and quality, the application of special engineering plastics in the electrical and electronic industry is becoming more and more extensive, especially in some heat-resistant occasions. At present, a considerable part of polysulfone is used. This area. Global polysulfone has an annual capacity of 35,000 tons and a total consumption of 30,000 tons. The annual production capacity of polysulfone in China is about 1,500 tons, and the output is maintained at about 1,000 tons. However, there are few brands of polysulfone resins in China, which are mainly used in medical devices, food processing machinery, electronic instruments, textiles and other industries.
In the microelectronic package, a high-fluidity, high-heat-resistance polyphenylene sulfide resin is replacing a thermosetting epoxy resin as a packaging material. These materials can withstand the high temperatures of welding, and their thermoplastic nature allows them to be reprocessed.
In addition, some special engineering plastics such as polyether sulfone, polyether ether ketone, and polyphenylene sulfide have excellent biocompatibility, dimensional stability, and chemical resistance. They are easy to process and can withstand repeated sterilization and water resistance. As a result, it has gradually been applied to the manufacture of medical devices, drug delivery systems, and artificial bones.
The application of special engineering plastics is getting closer to people's lives, and it has huge market potential in the civilian field. Therefore, China's special engineering plastics should speed up the status quo of the snow-melting snow in the spring, and pool the power to form industrialized line production in order to create greater wealth.
Special engineering plastics have excellent performance and high price, and they were originally mainly used in military and aerospace, aviation and other industries. However, recently, with the development of the microelectronics industry, biomedical engineering, and the energy industry, the application fields of special engineering plastics have been greatly expanded, and they are gradually shifting to the civilian market. Compared with developed countries, although China has a strong technology, it has made slow progress in industrialization. It has a small scale and a small degree of product refinement. Therefore, only by accelerating the process of industrialization and converting advanced technologies into large-scale production can special engineering plastics enter the civilian market quickly.