Introduction
Applications of PEEK in the Aerospace Field

The 15th China International Aviation and Aerospace Exhibition opened in Zhuhai on November 12, showcasing an array of major "national treasures" in the aerospace field, reflecting remarkable advancements.  The airshow featured an unprecedented flight performance, with the Air Force's aerobatic team dazzling the audience.  Following this, the J-20, J-35A, and JL-10 made their appearances, soaring through the skies and demonstrating the powerful capabilities of China.

Image Source: China Airshow

In the rapidly advancing aerospace industry, the application of specialty engineering plastics has garnered significant attention.  Among them, PEEK (polyether ether ketone) stands out for its exceptional properties, such as lightweight, high strength, and high-temperature resistance.  These attributes enable it to meet the demanding performance requirements of the aerospace field under complex conditions, making it a crucial material in this domain.


Part.  01
PEEK · Performance Advantages

- Achieves up to 70% weight reduction compared to metals while maintaining the same strength and rigidity.
- Exhibits no loss in tensile strength after more than 5,000 hours of stress-free heat aging at 260°C (500°F).
- Features a UL94 V-0 fire rating, with low smoke and low toxic gas emissions.
- Demonstrates dimensional stability and excellent creep resistance, fatigue resistance, and moisture resistance.

Part. 02
PEEK · Application Cases

Xiamen LFT provides PEEK composite materials to meet customers' requirements for material performance, safety, and efficiency, continuously contributing to the advancement of the industry.

PEEK long fiber-reinforced composites are widely used in the aerospace field, primarily for manufacturing high-performance, reliable, and lightweight critical components. Below are the common application areas:

1. Structural Components
Interior Structural Parts: Such as seat frames, brackets, and baffles. PEEK composites offer excellent strength and rigidity, making them ideal metal substitutes for weight reduction.
Aircraft Skin and Cabin Door Components: Their impact resistance and high strength ensure reliable performance under high pressure and harsh conditions.

2. Electronic and Electrical Components
- Cable Insulation: Provides insulation protection in high-temperature and highly corrosive environments.
- Connectors and Plugs: Outstanding heat resistance, wear resistance, and electrical insulation properties.

3. Engine Components
- Blades and Seals: Their heat resistance and wear resistance make them suitable for turbine engine parts.
- Fuel System Components: Chemically resistant, ensuring stability in aviation fuel environments.

4. Aerospace Thermal Control Systems
- Thermal Insulation Shields and Panels: PEEK composites offer excellent heat resistance and insulation, making them ideal for thermal management systems.

5. Composite Fasteners
- Used for fastening and connecting aerospace parts, reducing overall aircraft weight while enhancing assembly efficiency and safety.

6. Satellite and Spacecraft Components
- Antenna Brackets, Panels, and Housings: High strength and low weight make PEEK composites well-suited for the stringent requirements of spacecraft components.
- Solar Panel Array Supports: Lightweight materials with high precision and stability are essential for such applications.

7. UAV (Unmanned Aerial Vehicle) Components
- Drone Body Frames: Reduces weight and improves maneuverability, enhancing endurance and payload capacity.



PEEK long fiber composites, with their lightweight, high strength, heat resistance, and chemical corrosion resistance, serve as ideal substitutes for metals and traditional polymers. They hold significant strategic value in the aerospace industry.