Overview of the development of the hottest enginee

Overview of the development of China's engineering plastics industry

compared with general plastics, engineering plastics have more excellent mechanical properties, electrical properties, chemical resistance, heat resistance, wear resistance, dimensional stability, weather resistance and other advantages. They are lighter than metal materials and consume less energy when forming. They have become the fastest-growing materials in the world's plastic industry. Although the development of China's engineering plastics market has only been a short 20 years, the growth rate is amazing, almost three times the GDP growth rate year by year

engineering plastics has grown at an alarming rate and has become an important material in automotive electronics and electrical appliances and other industries (photos provided: Ge high-tech materials)

industry overview

after China's accession to the WTO, the processing industry has developed rapidly, and the demand for engineering plastics is increasing. On the one hand, it is reflected in the growth of imported resin, on the other hand, the domestic engineering plastics modification industry has entered a stage of rapid development, In 2001 alone, there were more than 190 new plastic modification production lines in the Pearl River Delta, with an estimated new production capacity of 600000 tons, including 40 production lines for engineering plastic modification, which can form an annual production capacity of more than 80000 tons

in recent years, foreign enterprises have also invested in China to establish modified processing plants, such as GE in Panyu and Shanghai, DuPont in Shenzhen, PolyOne in Suzhou, DSM in Jiangyin, Rhodia in Shanghai, Baoli and Asahi chemical in Shanghai; Taiwan's Jinlun, knight, Changchun, Nanya, Zhonggang, Guoqiao, Qimei and Hong Kong yixingxing also have modification plants in China. In addition, some foreign manufacturers plan to set up plants in China, such as Bayer, teiren, BASF, Chuguang, Mitsubishi, Asahi chemical, Japan ink, etc. the entry of these foreign companies will further promote the production level and technical level of domestic engineering plastics, At the same time, it will further intensify the domestic market competition

Table 1 domestic demand for engineering plastics in recent years (unit: 10000 tons)

Table 2 domestic consumption of engineering plastics (unit: 1000 tons)

Table 3 estimated consumption of domestic top five engineering plastics (unit: 10000 tons)

general engineering plastics

nylon (PA)

nylon for engineering plastics in China is mainly concentrated in the mechanical and electronic industry, and the consumption growth rate is expected to be about 20% in the next few years. The consumption of sports equipment, transportation and packaging industry will be greatly increased, especially in railway transportation. FAW has established a processing production line of PA intake manifold, and FAW is also preparing to build it. Other plants will also adopt PA intake manifold one after another, so the application of nylon in the transportation industry will have a large increase

in addition to nylon 6 and nylon 66, with the development of China's automotive industry, the consumption of some long carbon chain nylon, such as PA11 and PA12, has increased year by year, exceeding 3000 tons/year, and all raw materials rely on imports. At present, the production of nylon 1212 by biological fermentation developed by China has entered the stage of industrial development, and it is expected to replace nylon 11 and nylon 12 after modification. A set of nylon 11 pilot plant products of Shanghai Sailu chemical have passed the European test and are being applied by domestic manufacturers

the key to the development of China's nylon engineering plastics industry is to strengthen the close cooperation between cross industry departments, jointly speed up the development and application of products and supporting additives for the market, formulate quality standards for engineering plastics resins, and solve the problems of single variety and high cost

polycarbonate (PC)

in recent years, the electronics, computers, communications, building materials and other industries have developed rapidly. The consumption of PC in China has increased significantly, exceeding the consumption of nylon, and has become the largest variety of engineering plastics. At present, the vast majority of resins rely on imports. Among them, 20% is used for alloy modified materials, 70% is used for processing products, and 5% is used for processing products with plates and films

China is one of the first countries to develop PC. as early as 1958, Shenyang Research Institute of chemical industry successfully developed the transesterification production process, but has not been able to achieve large-scale production. In 2001, the production capacity of domestic devices was only about 2000 tons

recently, some PC production plants are under construction or ready to be built, such as the 100 kiloton/year device invested and built by Bayer and Shanghai Chlor Alkali Company in Germany, the reconstruction project of Changzhou synthetic chemical plant using the technology of Chenguang Chemical Research Institute to produce PC devices for optical disks, and Bluestar, Teijin, Chuguang, etc. have plans to invest in PC production devices. The completion of these projects is expected to alleviate the situation that Chinese PCs are mainly dependent on imports

Polyoxymethylene (POM)

in 2001, the domestic production of POM was 3900 tons. The POM device built by Yuntianhua with Polish technology has been successfully commissioned and put into production, and is ready to expand the production capacity to 30 thousand tons/year. The old plant in shijinggou, Jilin Province has resumed production after transformation, and the POM project of China blue Shanghai solvent plant, Daqing methanol plant and Lanhua science and innovation group is also under preparation. The 60 kiloton/year project of Baoli Nantong plant in Japan was completed at the end of 2004 and officially put into operation at the beginning of the year. DuPont and Asahi Huacheng's POM plant construction project with a capacity of 20000 tons/year in Zhangjiagang was put into operation on a date similar to that of Baoli company

pom has excellent mechanical and chemical properties, and can be used to make various precision instruments, instrument components, bearing gears, etc. it is widely used. The filling and modification of polyoxymethylene have been researched and developed in recent years, especially in toughening and wear resistance. At present, Audi, Jetta, Santana cars and Changchun tractors all use polyoxymethylene toughened by TPU

thermoplastic polyester (pbt/pet, etc.)

China's PBT resin began production in the early 1980s. So far, the annual production capacity has exceeded 335 kilotons, and it is the most successful one among the five engineering plastics. The growth rate of PBT market is about 20%, and imported resins and imported pellets account for most of the market. Domestic PBT only meets the needs of medium and low-grade products, and most manufacturers are underemployed. The development of PBT engineering plastics should focus on improving RTI, and work on anti precipitation product varieties, non halogen flame retardant system, anti warping varieties and surface modification, so as to form a supporting product series of multi varieties, high performance, high added value and special materials. It is reported that the RTI value of 30% glass fiber reinforced PBT of Sanfangxiang group has reached 130 ° C, which is basically consistent with va10x 420seo

pet has been used more and more in engineering plastics in recent years. Its heat resistance and surface finish are higher than PBT, so it is widely used in automobiles and electrics abroad. The industrialization level of PET engineering plastics in China is very low. So far, there is no large-scale industrial production, and only a few factories have a small amount of trial production to replace imported materials when they meet the tolerance requirements of various motion characteristic parameters. In addition, nano modified PET has achieved good results in application, and has been successfully tested in the production device, and is in the development and application stage. Pen is a new high-performance engineering plastic with similar properties to pet, but due to the source of raw materials, it is difficult to form a production scale in the short term

modified polyphenylene oxide (MPPO)

MPPO is a material with excellent electrical properties, heat resistance, flame retardancy, hot water resistance and weather resistance. Its long-term use temperature is -120 ° C to 120 ° C, and in the range of -40 ° C to 80 ° C. its mechanical properties change little with temperature and humidity. It is widely used in electronics, automobiles, office equipment, medical devices, aerospace and other fields. At present, the amount of aluminum alloy plate, strip and foil with a thickness of 0.1 ~ 3.0mm in the cup punching experiment in China is about 15 kilotons/year, and there are only a few blending plants, such as NISCO engineering plastics, Beijing Institute of chemical industry, Fujian duling and Shanghai resin all scale blending modification devices, with an output of about 4 kilotons/year. Recently, Shanxi Ruicheng is preparing to launch a new MPPO polymerization unit with an annual output of 10000 tons/year

special engineering plastics

polyphenylene sulfide (PPS)

are mainly used in electronic and electrical appliances, automobiles, instruments, household appliances, aviation, fiber and coating industries, with good electrical performance, high temperature resistance, easy molding, dimensional stability and other characteristics. In 2000, the consumption was 5700 tons, of which 60%-70% were imported in the form of parts. It is estimated that the consumption in 2005 will exceed 10000 tons. At present, there are 1000 ton devices in China

polyimide (PI)

is mainly used in electromechanical instrument structure, petrochemical industry, rocket, aerospace and other cutting-edge scientific and technological fields. China began research and development in 1962, and the current national production capacity is more than 1000 tons/year, which will reach 1.7 thousand tons/year in 2005; The demand was 4000 tons in 2002 and is expected to reach 1000 tons in 2010. At present, Shanghai Resin Research Institute has produced PI and supplied it to the market in batches

poly (PSF)

due to its good heat resistance, hydrolytic resistance, stability to acid, alkali and hot water at high temperature, good low temperature performance, easy injection, extrusion and hollow blow molding, PSF has excellent alloy properties and strength compared with some steels. Shanghai plastics industry company has begun to establish PSF production facilities. As engineering plastics, the main development direction is plastic alloy products

liquid crystal polymer (LCP)

with the miniaturization of computer systems and communication equipment in China, the consumption of LCP is increasing year by year. At present, Peking University, Zhejiang University, Tianjin Institute of synthetic materials, Wuhan Institute of chemical technology, Institute of chemistry, Chinese Academy of Sciences, Tsinghua University, etc. are all conducting research on Synthesis and application

polyether ether ketone (PEEK)

peek has good flame retardancy, radiation resistance, chemical resistance and mechanical properties, and is widely used. At present, it is mainly used for cleaning brackets of large-scale integrated circuit chips, compressor brake pads, automobile and motorcycle accessories and special pump body accessories. Jilin University special engineering plastics factory has been building projects with an annual output of 500 tons of PEEK, PES, PEKK and other special engineering plastics

market analysis

the automotive industry is the largest potential consumer market

the amount of engineering plastics has become an important indicator to measure the development level of a country's automotive industry. The plastic consumption level of China's automobile industry is far lower than that of similar foreign industries. Experts predict that the consumption of plastics in China's automotive industry will reach 700000 tons in 2005, of which engineering plastics account for 90000 tons. In the next few years, engineering plastics for the automotive industry will be the fastest growing field

electronic and electrical, communication and office equipment still dominate

electronic and electrical industry is one of the fastest growing industries in China and has become a pillar industry of the national economy. The use of engineering plastics in this industry is characterized by large amount, many varieties and high precision. At present, in the electrical market, the products with large consumption of engineering plastics are mainly low-voltage electrical appliances, connectors, energy-saving lamps, computer peripherals, communication equipment, office equipment, small household appliances (including household food machinery). Among them, the fastest growing ones are computer monitors, laptops and batteries

the machinery industry is dominated by electric tools

in the machinery industry, the engineering plastics used in electric tools have always occupied an absolute advantage, about 50%. Like hardware tool manufacturing, it is impacted by recycled materials. The author believes that with the gradual standardization of the market, the improvement of the inspection system, and the continuous enhancement of the reputation mechanism and quality awareness, the consumption of this market will increase significantly

the consumption of building materials industry has increased significantly

the application of engineering plastics in the building materials industry is mainly PC plate. The greenhouse, lighting corridor, dome, courtyard lighting, community signs, road signs, billboards, light boxes, kiosks, vending machines, etc. all use PC plate, and the highway noise barrier also uses PC plate. Many domestic steel mills are close to full load operation and processing. Electrical switch change