Nozzle and locking system: The melting point of the polymer is very high.The ideal barrel capacity is 2-5 times the total injection weight. Barrel capacity: Due to the high machining temperature of PEEK polymer, the residence time of the material must be as short as possible.It can be applied to traditional machines that can maintain the melt temperature at 360-400 ° C. Injection machine: The melting point of the polymer is 343 ° C.You can use materials that can maintain stable performance at 380 ° C, such as polyethersulfone or polyetherimide, or low MFI polyethylene for cleaning. ![]() If the downtime exceeds 3 hours, The barrel should be cleaned. When the machining is continued, the barrel temperature must be increased. At this temperature, the material can be stable for several hours. ![]() However, if the downtime exceeds 1 hour, the barrel temperature should be reduced to 340 ° C. Thermal stability: If the equipment is shut down during the melting process, and the polymer residence time does not exceed 1 hour, there is no obvious degradation of the material at a temperature of 360 ° C.It is recommended that recycled materials without fillers not exceed 30% of the total weight, and recycled mixtures with fillers not exceed 10% of the total weight. Recycling: The remaining materials can be recycled and injected into pure materials.If dried in a drying box, the thickness of the raw materials in the tray cannot exceed 25mm. The material can be placed in an air-circulating oven and dried at least 3 hours at 150 ° C or 2 hours at 160 ° C. For best results, it should be dried until the moisture is less than 0.02% w / w. Drying: The particulate polymer generally absorbs 0.5% w / w of atmospheric moisture.Products made with this material can still maintain excellent characteristics when continuously used in high-temperature and high-pressure water. PEEK and its composite materials are not affected by the chemical effects of water and high-pressure water vapor. PEEK has the best fatigue resistance of any resin. PEEK has good resistance to peeling, so it can be made into thinly covered wires or electromagnetic wires, and can be used under harsh conditions. The 1.45mm thick sample can reach the highest flame retardant standards without any flame retardant. Its corrosion resistance is similar to that of nickel steel. Among ordinary chemicals, only concentrated sulfuric acid can dissolve or destroy it. In particular, the self-lubricating properties of PEEK mixed with carbon fiber and graphite in a certain proportion are better.Ĭhemical resistance (corrosion resistance) PEEK has outstanding sliding characteristics in all plastics, which is suitable for applications with strict requirements for low friction coefficient and wear resistance. In particular, its excellent fatigue resistance to alternating stress is the most outstanding of all plastics, comparable to alloy materials. PEEK is a plastic that combines both toughness and rigidity. Its load thermal deformation temperature is as high as 316 ℃, and the continuous use temperature is 260 ℃. ![]() ![]() PEEK has a high glass transition temperature and melting point (334 ° C), which is one of the reasons why it can be reliably used in applications requiring heat resistance. Characteristics of PEEK engineering plastics Super mechanical properties can be used for high-end machinery and aviation technology. Polyether ether ketone, PEEK resin (Polyether Ether Ketone, PEEK for short) is a condensation reaction of “difluorobenzophenone” and “hydroquinone” in the presence of an alkali metal carbonate with diphenylsulfone as a solvent A new type of semi-crystalline aromatic thermoplastic engineering plastic prepared.Ĭompared with other special engineering plastics, PEEK has more significant advantages, high temperature resistance of 260 degrees, excellent mechanical properties, good self-lubrication, chemical corrosion resistance, flame resistance, peel resistance, wear resistance, strong nitric acid resistance, and radiation resistance.
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