Application of PEEK thermoplastic resin composites

2022-08-12
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The application prospect of PEEK thermoplastic resin composites

peek resin tensile testing machine is a frequently used experimental instrument (polyether ether ketone, abbreviated as PEEK resin). It is a new semi crystalline aromatic nasal thermoplastic engineering plastic prepared by condensation of 4,4 '- difluoro benzophenone and hydroquinone in alkali metal carbonate and diphenylsulfone as solvent. It is a high temperature resistant thermoplastic, with a high glass transition temperature (143 ℃) and melting point (334 ℃), and the load thermal deformation temperature is as high as 316 ℃ (30% glass fiber or carbon fiber reinforced trademark), which can be used for a long time at 250 ℃. Compared with other high temperature resistant plastics such as pi, PPS, PTFE, PPO, etc., the upper limit of the utilization temperature exceeds nearly 50 ℃; Peek resin not only has better heat resistance than other high temperature resistant plastics, but also has high strength, high modulus, high fracture toughness and good dimensional invariance; Peek resin can maintain high strength at high temperature. Its zigzag strength at 200 ℃ is about 24MPa. The road of transformation and upgrading at 250 ℃ should not only consider the zigzag strength and contraction strength of the enterprise itself and the surrounding microenvironment, but also 12~13mpa; Peek resin has large rigidity, good dimensional invariance and small linear expansion coefficient, which is very close to metal aluminum material; It has excellent chemical resistance. Among all chemicals, only concentrated sulfuric acid can melt or crush it. Its corrosion resistance is close to that of nickel steel. At the same time, it has flame retardancy. Under the premise of flame, it releases less smoke and toxic gases and has strong radiation resistance; Peek resin has good toughness and good decadent resistance to alternating stress, which is the most outstanding of all plastic materials, and can be comparable with alloy materials; Peek resin has prominent tribological characteristics, excellent sliding wear and fretting wear resistance, especially can maintain high wear resistance and low friction coefficient at 250 ℃; Peek resin is easy to extrude and injection molding, with excellent processing function and high molding efficiency. In addition, peek also has excellent functions such as good self lubrication, easy processing, constant insulation, hydrolysis resistance and so on, which makes it widely used in aerospace, automobile manufacturing, electronic and electrical, medical treatment and food processing, and has a broad and unrestrained prospect of development and operation

in aerospace, peek resin can replace aluminum and other metal materials to manufacture all kinds of aircraft parts, manipulate its excellent flame retardant function, and can be used to manufacture aircraft internal parts to reduce the risk of fire when landing the aircraft

in electronic and electrical appliances, peek resin has good electrical function and is an ideal electrical insulator. It can still maintain excellent electrical insulation under the premise of despicable working environment such as high temperature, high voltage and high humidity. Therefore, the field of electronic appliances has gradually become the second largest utilization category of PEEK resin. Because peek resin itself is of high purity and its mechanical and chemical functions remain unchanged, the contamination 9, balance bar and ring dyeing in the process of silicon wafer processing are reduced. Peek resin does not deform in a large temperature range, and the parts built with PEEK resin can withstand the high temperature environment of thermal welding. According to this feature, peek resin is often used in the semiconductor industry to manufacture wafer carriers, electronic insulating films and various connecting devices. In addition, peek resin can also be used in wafercarriers insulating films, connectors, printed circuit boards, high-temperature connectors, etc. In addition, peek resin can also be used for μ G/l ultra pure water transmission and storage equipment, such as pipes, valves, pumps and volumetric containers. At the moment, peek resin materials have been used in the production of large-scale integrated circuits in Japan and other countries

in medical treatment, peek resin is mainly used to produce surgical and dental equipment that requires high sterilization requirements and needs several times of use, and to build some compact medical instruments. The most important use is artificial bone that can replace metal. In addition to its light weight, non-toxic, strong corrosion resistance and other advantages, the artificial bone made of PEEK resin is also a plastic material. It is the closest material to the human bone and can be organically connected with the body. Therefore, using peek resin to replace metal to make human bone is a very primary use in the medical field, which has far-reaching significance and value, and its potential utilization prospect will be very gratifying

in terms of fuel source power, peek resin has high temperature resistance, is not easy to hydrolyze, and is also resistant to radiation, so the wire and cable coil skeleton built with PEEK resin has been successfully used in nuclear power plants

in the petroleum exploration and production industry, it can be used to manufacture probes with special geometric dimensions touched by mining machinery

in the mechanical industry, peek resin is often used to build compressor valve plates, piston rings, seals, and various chemical pump bodies and valve components. Using this resin instead of stainless steel to build the impeller of vortex pump can significantly reduce the quiet noise level of worn water and prolong its service life. In addition, because peek resin is suitable for the specification requirements of pipe group workpiece materials, it can still be bonded with various adhesives at high temperature, so modern connectors will be another potential utilization market

in automotive and other industries, peek resin has excellent friction resistance and mechanical functions, which can be used as a substitute for metal stainless steel and titanium to manufacture various parts such as engine hood, automotive bearings, gaskets, seals, diffuser gear rings, and others can also be used in automotive transmission, braking, and air conditioning systems. At present, Boeing aircraft, AMD, Nissan, NEC, sharp, Chrysler, general motors, Audi and Airbus have begun to use such materials in large quantities; In terms of coating, the dense powder coating of PEEK resin is covered on the metal profile, and the finished metal peek powder coating with good insulation, strong corrosion resistance, heat resistance and water resistance can be obtained, which is widely used in chemical corrosion prevention, household appliances, electronics, machinery and other fields. In addition, peek resin can also be used to make packing columns for liquid chromatography analyzers and ultra-fine tubes for connection

in order to meet the requirements of manufacturing high-precision, heat-resistant, wear-resistant, decadent resistant and impact resistant parts, peek resin can be blended, filled, fiber composite and other strengthening and modification treatments to obtain peek plastic alloy or PEEK composite with double excellent function. For example, peek can be blended with polyether ketone to obtain composites with specific melting point and specific glass transition temperature, and the processing and molding function of this material can be improved; The blends of PEEK and PES not only have excellent mechanical properties, but also improve the flame retardancy; The material made of phenolic resin used in peek has special anti friction function; The composite material made of PEEK and polytetrafluoroethylene blends, while maintaining peek's high strength and high hardness, it also has raised wear resistance, which can be used to manufacture sliding bearings, sealing rings and other mechanical parts; Peek can be modified and strengthened with carbon fiber, glass fiber and other fibers to make high-performance composites. Fiber Reinforced PEEK composites have excellent creep resistance, moisture and heat resistance, aging resistance and impact resistance. Adding carbon fiber or glass fiber into peek can also greatly improve the tensile and flexural strength of materials; Joining whisker materials in peek can improve the hardness, rigidity and dimensional invariance of the materials, which can be used to manufacture the annular and shaped valve plates of hydrogen compressor and petroleum gas compressor on large-scale petrochemical production lines. The PEEK composite reinforced and modified with inorganic nano materials is a new composite material integrating many characteristics of organic resin and high-function inorganic nano particles. It can significantly improve the impact resistance and friction resistance of PEEK resin. At the same time, the machining of T-grooves on the surface of the lever can improve the rigidity and dimensional invariance of peek, and further expand the utilization range of PEEK resin

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