CF/PEEK Continuous Stent

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 processes.
Advanced composite materials are an important part of high-tech aerospace products. Continuous CF/PEEK composites offer extremely high heat resistance (heat deflection temperature up to 340°C), corrosion resistance, friction resistance, and good biocompatibility. They effectively reduce the structural weight of aircraft, launch vehicles, and satellites, increase payload and range, and lower costs.
Continuous CF/PEEK composites possess very high mechanical properties, while also offering higher impact resistance than traditional thermoset composites. They can be used to process aircraft landing gear skin components, while also reducing aircraft weight.

Applications in the Civil Aviation Sector
CF/PEEK composites are widely used in the leading edges of civil aircraft wings, as well as internal aircraft parts including seat frames, brackets, beam ribs, and intake pipes.

Applications in the Aerospace Sector
PEEK prepreg has been used for fully automatic tail units, fuselage belly panels, fuselage skins, nose landing gear doors, main landing gear doors, wing panels, and horizontal stabilizer leading edges. As wave-transparent materials, PEEK, PEKK, PES, and other resins have good radar transmission and electrical insulation properties. When radar waves strike these resin-based composites, creeping electromagnetic waves are not easily formed. Unidirectional reinforced grades made from hybrid carbon fiber and PEEK multi-filament yarns are suitable for manufacturing helicopter rotors and some important shell components.

As a typical high-performance thermoplastic resin, PEEK has outstanding properties across the board. When combined with continuous carbon fiber, the performance of the two materials is effectively integrated, resulting in even more excellent overall performance. Due to their superior properties, continuous carbon fiber CF/PEEK thermoplastic composites have been widely used in aerospace, medical, automotive, and other fields. They are also a key research focus for universities, research institutions, and enterprises.

Advantages of Continuous Carbon Fiber CF/PEEK Composites:

1. Good Elongation at Break and Fracture Toughness

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

2. Excellent Delamination Resistance and Fatigue Resistance

PEEK has good impact resistance, making it one of the most impact-resistant heat-resistant resins. At the same time, PEEK has high rigidity, good dimensional stability, a low coefficient of linear expansion, and excellent long-term creep and fatigue resistance.

3. Excellent Chemical Corrosion Resistance

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

4. Excellent Hot and Humid Resistance

PEEK has low moisture absorption and good hot and humid resistance, maintaining good mechanical properties even under high temperature and high humidity. In addition, it has outstanding hydrolysis resistance, low moisture absorption and permeability, and resistance to steam, water, and seawater.

5. Excellent Sliding Wear and Fretting Wear

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

6. Biocompatibility

Studies have shown that when short carbon fiber reinforced PEEK is used as a prosthetic material implanted in animals, it has low cytotoxicity, meets the cytotoxicity standards for medical implant materials, and has good blood and tissue compatibility.

7. X-ray Translucency

PEEK has good transmission properties and does not produce artifacts like metal implants do under X-ray or CT examinations, facilitating medical checkups and other examinations for patients.