According to reports, Huazhong University of Science and Technology recently independently developed a 5KW grade solid oxide fuel cell independent power generation system, which marked a new breakthrough in the independent power generation technology of China's SOFC system, and related technologies have basically entered the stage of engineering and productization. condition. As SOFC can directly use natural gas and other fuels to generate electricity, and does not have to use precious metal catalysts, it is hailed as the 21st century green energy technology in the industry. With this breakthrough in the independent power generation technology of the SOFC system, as well as commercialization and application promotion, there is a huge room for growth in the industry in the future. New Breakthrough in China's FOSC Technology According to reports, Huazhong University of Science and Technology recently independently developed a 5KW-level solid oxide fuel cell independent power generation system. This indicates that China's SOFC system has achieved new breakthroughs in its independent power generation technology, and has basically met the conditions for entering the engineering and productization stage. Compared with traditional power generation methods, fuel cells have the advantages of zero emission, no pollution, low noise, and they are not subject to the restrictions of the Carnot cycle and have high energy conversion efficiency. They are truly clean energy sources. As long as the supply of fuel and oxidant can be guaranteed, the fuel cell can continuously produce electricity, and its ideal conversion efficiency is as high as 83%. Although the actual conversion efficiency cannot reach the ideal state, it is only about 45%-60%, but it is also higher than the efficiency of the internal combustion engine by 30%-40%, and the product is mainly water, and basically it does not emit harmful gases. Can be widely used in transportation, military, aviation and other fields. The solid oxide fuel cell (SOFC) independently developed by Huazhong University of Science and Technology is currently one of the mainstream fuel cell products. The fuel cell also includes a proton exchange membrane fuel cell (PEMFC) and a molten carbonate fuel cell (MCFC). Three categories. According to different performances, PEMFC is mainly applied in the field of new energy vehicles, while SOFC and MCFC have good prospects for promotion in fixed power generation because of their low cost, high power, and mature technology. They are mainly used for cogeneration and stationary power generation. . At present, SOFC and MCFC have formed a certain industrial base in the fields of distributed power generation and cogeneration in foreign countries. Northeast Securities pointed out that although at present, MCFC technology is mature and commercialized to a high degree, the advantages of SOFC life, efficiency and other aspects have determined it to be more promising. Currently, SOFC and MCFC domestic companies are less involved, and the manufacturers are mainly overseas companies such as Ceramic Fuel Cells Limited (CFCL) and Fuel Cell Energy (FCE). Since the rise of the fuel cell in 2000, it has not been widely used in commercialization because of the delay in cost, but as the cost has decreased in recent years, it has been used in commercial applications such as domestic cogeneration, stationary power generation, and fuel cell vehicles. The progress is steadily advancing. According to Guojin Securities, domestic fuel cell products have officially entered the commercial stage in Japan in early 2009 under the name of ENE-Farm. In 2012, the sales volume of ENE-FARM in Japan reached 20,000 units, and the price is lower than that in 2009. 50%, the market size exceeds 500 million U.S. dollars; and in 2012, the global installed capacity of fuel cell power stations was 120MW, an increase of 50% compared with the same period of last year. The data center of IT companies is the main application site for fuel cells. Currently, Bloom Energy's fuel cell system power generation costs have been Similar to photovoltaic power generation, fuel cell shipments continued to grow in 2013; since 2013, especially with the launch of Tesla Lithium battery vehicles, major automakers have begun to accelerate the development of fuel cell vehicles, and Hyundai and Toyota will take the lead in volume production in 2015. With 1,000 fuel cell vehicles, it is expected that the cost of mass production will drop from the current 100,000 US dollars to 50,000 US dollars. SAIC Motor also plans to gradually introduce commercial fuel cell vehicles from 2015.
PEEK Plastics,Polyether ether ketone, known in English as polyetheretherketone plastic (PEEK Plastics), is a linear aromatic polymer containing chain sections in the main chain of molecules.Its constituent units are oxygen-pairs of phenyl-oxycarbonyl - pairs of phenyl, semi-crystalline, thermoplastics.
Product name: polyether ether ketone (PEEK Plastics) resin is a kind of excellent special engineering plastics, PEEK Plastics has more significant advantages compared with other special engineering plastics, resistance to high temperature is 260 degrees, mechanical performance, good self-lubrication, resistance to chemical corrosion, flame retardant, stripping resistance, abrasion resistance, no strong sulfuric acid, nitric acid resistance, radiation resistance, strong mechanical properties can be used for high-end technology such as mechanical, nuclear engineering and aviation.
PEEK Plastics has heat resistance, chemical stability and the forming process of thermoplastic plastic. PEEK Plastics has excellent heat resistance.Its thermal deformation temperature of 160 ℃, with 20% ~ 30% Glass Fiber reinforced, heat distortion temperature can be increased to 280 ~ 300 ℃.Polyether ether ketone is good, the thermal stability of 420 ℃ in air.2 h under weightlessness is only 2%, at 500 ℃ was 2.5%, significantly thermo-gravimetric 500 ℃.Polyether ether ketone of long-term use of temperature is about 200 ℃, under this temperature, still can keep the high tensile strength and bending modulus, PEEK Plastics is also a kind of very strong material, has excellent resistance to creep and fatigue performance for a long time.
PEEK Plastics electrical insulating performance is very excellent, volume resistivity of about 10 ~ 10 Ω · cm.It still has small dielectric constant and dielectric loss in high frequency range.For example, in 10Hz, the dielectric constant in the room is only 3.2 and the dielectric loss is only 0.02.
The chemical stability of polyether ether ketone is also very good. In addition to concentrated sulfuric acid, almost any chemical reagent is very stable, even at high temperature, PEEK Plastics can maintain good chemical stability.In addition, PEEK Plastics has excellent heat resistance and steam resistance.In 200 ~ 250 ℃ steam can be used for a long time.
PEEK Plastics with good flame retardancy, in normal circumstances it is difficult to burn, even burning, smoke and harmful gas release a quantity to also is very low, even lower than low smoke volume of polymer such as ptfe.In addition, PEEK Plastics has excellent radiation resistance.Its resistance to alpha rays, beta gamma rays and gamma rays is the best current polymer material.The wire products covered with it can withstand gamma rays of 1.1 x 10Gy.
The polyether ether ketone has good fluidity and thermal stability at the melting point.Therefore, PEEK Plastics has the typical processing performance of thermoplastic plastic. Therefore, it can be used for injection molding, extrusion, blow molding and laminating, and also spinning and making films.Although the polyether ether ketone melt processing temperature range is 360 ~ 360 ℃, but because of its thermal decomposition temperature above 520 ℃, and it still has the very wide processing temperature range.
Although the development history of PEEK Plastics is only a short 20 years, but because PEEK Plastics has the outstanding heat resistance, chemical corrosion resistance, radiation resistance and high strength, easy to machining, PEEK Plastics is currently in the nuclear industry, chemical industry, electronic appliances, machinery, instrument, automobile industry, and has been widely used in aerospace field.In particular, thermoplastic resin, which is excellent in heat resistance, can be used as the base material of high performance composite materials.
modified
PEEK Plastics performance of the pure material is difficult to meet the different needs of different industries, in special working environment need to modification of PEEK Plastics, its main means blending modification, copolymerization modification, reinforced composite, infill modification, nanometer modification and surface modification technology.The modification can increase the performance of PEEK Plastics, such as wear resistance, impact strength, etc., thereby extending the application range of PEEK Plastics, reducing the cost of materials and improving the processing performance of PEEK Plastics.
Application
PEEK Plastics has been widely used in aerospace, automotive manufacturing, electronics, medical and food processing.
PEEK Plastics has excellent performance, its application field will be more widely with the domestic application research, the current domestic set up the chongqing sanxin materials research center is a professional engaged in the research of PEEK in the field of application.The research center is under the chongqing government entities at all levels of leadership and care, is committed to in the field of automobile, electrical and electronic fields, transportation research, in the present walk at the forefront of the domestic application research.
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