Customized high-temperature resistant PEEK products are gradually replacing traditional metal materials for aviation impellers

With the progress of society and the development of technology, the scope of application of impellers is also expanding day by day, and the materials used for their production are constantly improving. Composite materials with better performance are also increasing their application fields, among which the application in the aerospace field is an important application. The impeller is a power machinery that uses continuously rotating blades as its body to convert energy between fluid medium and axial force. Through rapid operation, it plays a role in energy conversion. Its manufacturing technology is high, and the manufacturing process is also very complex, so the performance requirements for its manufacturing materials are also very strict.

As is well known, traditional aviation blades are mostly made of high-temperature alloy single crystals or titanium alloys, but their production technology is complex and the production cost is relatively expensive, which limits their production. However, PEEK material has good comprehensive performance in high temperature resistance, toughness, corrosion resistance, fatigue resistance, and processability, which can be comparable to titanium. The emergence of PEEK material greatly improves the production capacity of impellers in China. Moreover, PEEK material blades are lightweight, reducing flight resistance and enhancing flight speed, which is simply a blessing for aviation.

PEEK is a high-temperature resistant thermoplastic made of polyetheretherketone resin, and its material has many advantages over impellers

Lightweight texture can effectively reduce noise: Compared with ordinary metal materials, PEEK material has a relatively lower density. PEEK material of the same style is much lighter, while still maintaining the excellent performance of the body material, thereby improving the strength of the blade itself, better dynamic balance, and more significant noise reduction effect. Good flight stability under high temperature and high pressure: PEEK material has excellent high temperature resistance and can maintain its dimensional stability in environments up to 260 ° C for a long time. It has a small coefficient of thermal expansion, strong fatigue resistance and vibration resistance, and can be used normally in harsh environments, making its blades less likely to deform due to external factors and prolonging their service life.

Strength and stiffness comparable to steel: Compared to titanium metal, it has higher strength and height. Its bending strength at 200 ℃ is about 24MPa, and its bending strength and compressive strength at 250 ℃ are still 12-13 MPa; If encountering other foreign objects during flight, the blade size can still maintain its stability and ensure the normal flight of the aircraft impeller. It has excellent chemical corrosion resistance: in typical chemicals, only concentrated sulfuric acid can dissolve or destroy it. Its corrosion resistance is similar to nickel steel, and it also has flame retardancy. If it is accidentally burned during flight, it releases less smoke and toxic gases, and has strong radiation resistance;

The emergence of PEEK aviation impellers has brought significant changes to the aviation industry, promoted the development of China's aviation industry, and led the aviation industry into a new era. Moreover, PEEK materials come in various types, with processing methods such as injection molding, extrusion molding, and compression molding. In the future, more PEEK products will appear in our lives.