High-performance polymers for the aerospace industry: lightness, safety and on-board reliability

The aeronautics industry demands materials capable of withstanding the most extreme stresses, while helping to lighten structures. Faced with the challenges of safety, energy efficiency and regulatory compliance, high-performance polymers (HPP) are becoming the solution of choice for replacing metal components in civil and military aircraft and on-board equipment.

For over 75 years, DEMGY has been supporting the main players in the aeronautical sector with machined, injected or 3D printed technical parts, designed for critical environments: mechanical, temperature, vibration, humidity, chemical agents.
 

• Continuous heat resistance up to 320°C (Vespel®, Torlon®, PAEKUltem®, PPS)
• FST compliance for cabin interiors (fire, smoke, toxicity, heat release): FAR 25.853 standard
• Mechanical strength with performance approaching that of certain metals
• Weight reduction up to 60% vs. metal
• Resistant to impact, moisture and chemicals
• Flexible processing: machining, molding, additive manufacturing

Engine components machined from Vespel® Polyimide

• Bushings and washers for variable-timing systems (IGV)
• Friction and wear resistance without lubrication vs. metals such as Titanium, Inconel, Copper.
• Thermal resistance to extreme environments - 320°C continuous and 550°C peak.

PEEK or PEKK clamps, cable protection and fasteners

• Significant weight reduction for power harnesses
• Increased mechanical, thermal and chemical resistance
• Mass production or custom-made via 3D printing

Molded PEI aircraft interior components

• FAR 25.853-compliant seat trim, supports, covers and structures
• Complex design with aesthetic finishes
• High mechanical and thermal resistance

Avionic housings, coils and connectors in PPS

• Dimensional and electrical stability
• Low moisture absorption
• Precision molding or machining for critical parts

Machined sealing elements in Vespel®, PEEK or PCTFE

• Compressive strength for static or dynamic sealing of high-pressure fluids
• Dimensional stability - Coefficient of thermal expansion (CTE) similar to that of metals
• High thermal resistance for aircraft equipment (air management, landing gear, ....)

Our sites are EN 9100 and ISO 9001 certified, with full traceability of materials and rigorous quality controls. We support your projects from the co-design phase through to series production, in France or abroad.

Contact our teams for a feasibility study, consultation or rapid prototyping.