Analysis on the development opportunities of engin

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With the progress of science and technology and the continuous improvement of people's living standards, the traditional plastic manufacturing industry is undergoing an in-depth change. The force leading this change comes from an advanced polymer material engineering plastics. The emergence of engineering plastics has brought higher performance products and broader application fields to the plastic manufacturing industry

according to the order of increasing performance and price, plastic products can be divided into general plastics, general engineering plastics and special engineering plastics, and show a pyramid distribution. The general plastic at the bottom of the pyramid has a single performance, is relatively cheap, and is also the most common in daily life. General purpose plastics include five varieties, namely polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and acrylonitrile butadiene styrene copolymer (ABS). The general engineering plastics and special engineering plastics located in the middle and top of the pyramid have better performance and higher economic added value, and have huge market potential. General engineering plastics include polycarbonate (PC), polyamide (PA), Polyoxymethylene (POM), polybutylene terephthalate (PBT) and polyphenylene oxide (PPO); Special engineering plastics include polyphenylene sulfide (PP can choose computer control or manual control mode s), liquid crystal polymer (LCP), polysulfone (PSF), polyimide (PI), poly (aryl ether ketone) (PEEK) and poly (aryl ester) (the iron content difference r of samples taken by PA at different intervals), etc

compared with general plastics, engineering plastics have greatly improved in performance, such as high mechanical strength, high rigidity, good dimensional stability, good heat resistance, excellent electrical insulation, etc. Therefore, engineering plastic is a kind of plastic material that can be used as structural material and bear mechanical stress, and can be used in a wide temperature range and harsh chemical and physical environment. The application of engineering plastics in the automotive industry is a good example of its excellent performance. First of all, the use of engineering plastics can reduce the friction between automotive transmission parts, increase wear resistance, improve sealing, and make a greater breakthrough in safety, comfort and fuel efficiency. Secondly, engineering plastics have the characteristics of light weight, strong plasticity and low manufacturing cost, which greatly improves the integration of automotive parts and the internal and external design space, and reduces the weight and manufacturing cost of the whole vehicle. Engineering plastics are not only used in car bumpers, dashboard panels, door interiors, but also become the main materials in key components such as engine air ducts, throttle valve bodies, intercoolers and so on. As of 2011, 14% of the downstream demand of domestic engineering plastics came from the automobile manufacturing industry, while the proportion in European and American countries has been close to 50%. Engineering plastics have become the best material choice for the automotive industry in the 21st century. Similarly, engineering plastics are also widely used in aerospace, electronic and electrical, automotive, petrochemical, national defense and military industries

at present, the domestic engineering plastics industry is in a period of rapid development. After becoming the strongest economic growth point of the chemical industry during the "Eleventh Five Year Plan", engineering plastics, as a strategic emerging industry, has once again been included in the development plan of the new material industry for the "Twelfth Five Year Plan" with the introduction of various laws and regulations on intellectual property protection. Last year, the total domestic consumption of engineering plastics reached 2.737 million tons, with a year-on-year increase of 11.8%, and the demand growth rate was the fastest in the world. It is expected that the demand for engineering plastics will continue to grow at an annual rate of 8% to 11% in the next 10 years. Despite the rapid development, the annual output of domestic engineering plastics is still far from meeting the downstream demand. For example, in 2010, the total consumption of polycarbonate in China was about 1.1 million tons, of which 970000 tons were imported, and the self-sufficiency rate was less than 12%. The 12th Five year plan clearly points out that by 2015, China will provide an experimental basis for studying the mechanical action of materials in plastic state, and the market satisfaction rate of engineering plastics will strive to exceed 50%

in the process of development and import substitution of engineering plastics industry, enterprises that master core technologies will be able to fully benefit from the considerable returns brought by technical barriers and high added value of products, and achieve sustained and rapid growth together with the engineering plastics industry

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