CF/PEEK aircraft angle piece

With the development of the aerospace industry, the high performance, high reliability and low cost of advanced aircraft, launch vehicles and satellites are largely due to the widespread application of new materials and new processes.
Advanced composite materials are an important part of aerospace high-tech products. Continuous CF/PEEK composite materials have the advantages of extremely high heat resistance (heat deformation temperature can reach 340C), corrosion resistance, friction resistance and good biocompatibility. It can effectively reduce the structural weight of aircraft, launch vehicles and satellites, increase payload and range, and reduce costs.
Continuous CF/PEEK composite materials have very high mechanical properties and higher impact resistance than traditional thermosetting composite materials. They can be used to process aircraft landing gear skin components while reducing the weight of the aircraft.

Application in the civil aircraft field
CF/PEEK composite materials are widely used in the leading edges of civil aircraft wings, aircraft internal parts, including seat frames, brackets, beam ribs and air intake pipes.

Application in the aviation field
PEEK prepreg has been used in fully automatic tail, fuselage belly wall, fuselage skin, front landing gear door, main landing gear door, wing wall, horizontal stabilizer leading edge, etc. As wave-transmitting materials, PEEK, PEKK, PES and other resins have relatively good radar transmission and power-saving projection characteristics. When radar waves are projected into these resin-based composite materials, it is not easy to form creeping electromagnetic waves. Carbon fiber and PEEK multifilament mixed yarn unidirectional reinforcement grade is suitable for making helicopter rotors and some important shell parts.

As a typical high-performance thermoplastic resin, PEEK has outstanding performance. When combined with continuous carbon fiber, the performance of the two materials is effectively combined, and the overall performance is even better. Due to its excellent performance, continuous carbon fiber CF/PEEK thermoplastic composite materials have been widely used in aerospace, medical, automotive and other fields, and are also the focus of research and attention of major universities, scientific research institutions, and corporate units.

Advantages of continuous carbon fiber CF/PEEK composites:

1. Good elongation at break and fracture toughness

As a representative of high-performance thermoplastic polymers, PEEK has a fracture toughness of up to 2.0 KJ/m, which is 20 times that of epoxy resin.

2. Excellent anti-delamination and fatigue resistance

PEEK has good impact resistance, and it is one of the best impact resistance among heat-resistant resins. At the same time, PEEK has high rigidity, good dimensional stability, small linear expansion coefficient, and excellent long-term anti-creep and anti-fatigue properties.

3. Excellent chemical corrosion resistance

PEEK has excellent chemical corrosion resistance and is highly resistant to acids, alkalis and almost all organic solvents. It is only corroded by halogens and strong acids at high temperatures and is only soluble in concentrated sulfuric acid at room temperature.

4. Excellent moisture and heat resistance

PEEK has low moisture absorption rate and good resistance to moisture and heat. It can still maintain good mechanical properties under high temperature and high humidity. In addition, it has outstanding hydrolysis resistance, low moisture absorption and permeability, and is resistant to steam, water and seawater.

5. Excellent sliding wear and fretting wear

PEEK can maintain high wear resistance and low friction coefficient at 250°C.

6. Biocompatibility

Studies have shown that short carbon fiber reinforced PEEK implanted as a prosthetic material in animals has low cytotoxicity, meets the cytotoxicity indicators of medical implant materials, and has good blood compatibility and tissue compatibility.

7. X-ray transparent

PEEK has good transmission properties and does not produce artifacts like metal implants under X-ray and CT examinations, making it easier for patients to undergo medical examinations.