PEEK and its composites are widely used in commercial aviation as lightweight, high-reliability alternatives to metals like aluminum/titanium alloys. Key advantages include: 1.3g/cm³ density (half aluminum’s, a quarter titanium’s) for 10-40% weight reduction; UL94 V-0 flame retardancy; resistance to 260°C (300°C short-term) and -40°C; chemical/hydrolysis stability; and self-lubrication for low maintenance. It’s applied across aircraft: interiors (seat frames, luggage racks) for safety/comfort; engine parts (blades, seals) for heat/corrosion resistance; piping/cables (clamps, insulation) for durability; and CF/PEEK composites in fuselage/wing structures for load-bearing lightweighting. Specific uses include Boeing 787/A350 components, COMAC C919’s cable parts, and UAV/eVTOL structures (boosting range/payload). Aerospace accounts for ~22-25% of global PEEK consumption, with growth driven by fleet expansion and fuel efficiency demands. Domestic firms like Dalian Luyang now offer PEEK solutions, targeting localization in China’s aviation supply chain.

This article introduces that PEEK materials, relying on properties like chemical corrosion resistance and high temperature/pressure tolerance, have become key alternatives to metals and traditional materials in hydrogen energy equipment (especially ALK and PEM electrolyzers). It details PEEK’s core applications: ALK sealing gaskets (solving issues of traditional materials with low creep and good insulation) and engineering plastic electrode frames (realizing lightweighting and easy mass production). It also mentions PEEK’s potential in PEM electrolyzer components, hydrogen fuel cell systems, and high-pressure hydrogen storage/transportation. Finally, it notes that Dalian Luyang Technology, a high-tech enterprise, has developed PEEK-based products for alkaline water electrolysis hydrogen production, providing material solutions for hydrogen energy equipment.

PEEK in Electronics & Electrical: A high-performance engineering plastic enabling critical applications in semiconductor manufacturing (carriers, connectors), 5G communication (antennas), and consumer electronics (acoustic parts). Valued for high temp resistance, dimensional stability, and reliability.

PEEK (Polyetheretherketone) material, leveraging its outstanding comprehensive properties, has become a key alternative to traditional materials (such as PTFE, metal, PA, PPS, etc.) in the pump and valve sealing field. It is particularly suitable for harsh operating conditions involving high temperature, high pressure, strong corrosion, and high cleanliness requirements.