In addition to chemical modification by changing the composition and/or proportion of the main chain of the polymerization in the polymerization stage, common performance improvement methods in industry also include surface modification, blending modification and composite filling enhancement and the like, to improve the molding performance and service performance of PEEK. With the development of processing technology and the improvement of material performance requirements in the market, the modification and compounding of PEEK have become a hot spot in the industry in recent years. PEEK material can be molded by extrusion, injection molding, blow molding, pressing, mechanical processing, etc. It can be used for processing high-precision product, micro-product, free-form surface, fine hole, roughness control, deburring control, welding and molten welding, etc. In order to meet the requirements of customers for the precision and complexity of PEEK processing, Nanjing Yuwei constantly improves its technical ability and level, and carries out the innovation and improvement of PEEK processing technology. Especially, heat treatment of the products with larger specifications and sizes should be carried out to eliminate internal stress, so as to avoid cracking and deformation of the products. Therefore, the characteristics of the material should be fully considered and the use of tools and technical parameters should be adjusted during the processing of PEEK material. PEEK is quite different from metal materials and general engineering materials in thermal expansion, thermal dispersion, elasticity, wear resistance and other aspects during mechanical processing, and improper operation will cause adverse consequences. Generally, injection molding, extrusion, monofilaments and wrapping are recommended for granular materials, powder is suitable for compression molding, while superfine powder is commonly used for coating, composite prepreg and molding. Usually, unfilled and filled grades are supplied in the form of granule, powder, or superfine powder. PEEK processing can be processed with traditional thermoplastic processing equipment. In addition, PEEK application market is constantly being developed and innovated because of its combination of outstanding features. The technological innovation of PEEK material has changed the disadvantages of traditional processing methods, such as low utilization rate, high cost and difficulty in forming complex structures directly, and realized the rapid manufacturing of high performance PEEK material with low cost and high precision. It is applied to the fields such as aerospace, automotive manufacturing, electronics and electrical, medical and food processing and the like.The technical development and breakthrough of PEEK not only met the needs of domestic production, but also exported PEEK materials and products manufactured in China, breaking the technological monopoly of foreign countries. Moreover, it can be used to produce all kinds of machinery parts and components, such as automotive gear, oil screen, shift start plate, aircraft engine parts, runner of automatic washing machine, medical instrument parts and so on. Compared with other special engineering plastics, it has many remarkable advantages, such as high temperature resistance, good mechanical performance, good self-lubrication, chemical corrosion resistance, flame resistance, stripping resistance, radiation resistance, insulation stability, hydrolysis resistance, good workability and so on. PEEK is a kind of special engineering plastics with excellent performance.
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