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PEEK’s Excellent Performance
According to the “China Polyetheretherketone (PEEK) Industry Development Trend Research and Future Investment Analysis Report (2025-2032)” published by Guanyan Report Network, polyetheretherketone (PEEK) is a high-performance polymer material composed of repeating units containing one ketone bond and two ether bonds in its backbone structure. It is a specialty polymer material. Polyetheretherketone (PEEK), as a third-generation high-performance thermoplastic engineering plastic, has outstanding properties such as high temperature resistance (long-term operating temperature > 260°C), self-lubrication (friction coefficient 0.15–0.35), high strength (tensile strength > 150 MPa), and chemical stability (resistance to corrosion in pH 1–14 media) due to its rigid-flexible synergistic structure of alternating benzene rings and ether bonds in its molecular chain. Its application in aerospace (weight-reducing structural parts), electronics and electrical (insulating devices), new energy vehicles (battery components) and other fields continues to expand, making it an ideal choice to replace traditional materials such as metals and ceramics.
| Main Properties | Property Description | Representative Indicators |
| Mechanical Properties | PEEK combines excellent rigidity with good toughness, and exhibits outstanding fatigue resistance under alternating stress. It is comparable to metal materials in these aspects. | 1. Tensile modulus; 2. Notched impact strength; 3. Specific strength |
| Heat Resistance | PEEK has a relatively high glass transition temperature and melting point, and can withstand high load heat distortion temperatures as well as high instantaneous service temperatures. | 1. Long-term service temperature; 2. Thermal conductivity |
| Flame Resistance | PEEK is inherently flame-retardant and can achieve the highest flame-retardant rating (UL94 V-0) without any flame-retardant additives. | Flame retardant grade |
| Wear Resistance | PEEK maintains good wear resistance even under high temperature conditions of 250°C. | Wear coefficient |
| Corrosion Resistance | PEEK has excellent chemical resistance. Under normal chemical environments, only concentrated sulfuric acid can dissolve or destroy it. Its corrosion resistance is similar to that of nickel steel. | Chemical resistance performance |
| Hydrolysis Resistance | PEEK has a very low water absorption rate, with a saturated water absorption of only 0.4% at 23°C. It also has good hot water and steam resistance, allowing use at 200°C in high-pressure steam for extended periods. | Water absorption rate |
| Peel Resistance | PEEK bonds very well to various metals and coatings, allowing it to be used in harsh conditions as insulated and sheathed wires, cables, and electromagnet coils without peeling. | Peel strength |
| Biocompatibility | PEEK has excellent biocompatibility, making it suitable for medical implants in the human body. It has good visibility, avoiding X-ray artifacts, and allows for CT scanning or MRI navigation assistance. This helps doctors position implants during surgery. Postoperative recovery is faster with reduced pain. PEEK’s elasticity allows better matching with bone, effectively reducing stress shielding and maintaining healthy, long-lasting bone structure. | – |
2.With the trend of replacing steel with plastic, my country’s polyetheretherketone (PEEK) industry has extensive downstream applications.
Polyetheretherketone (PEEK) offers comprehensive performance advantages over common metals. While meeting strength requirements, it can significantly reduce the material’s weight. Therefore, with the trend of replacing steel with plastic and lightweighting, PEEK, with its superior performance, is gradually replacing plastics and metals in various fields, with widespread application in transportation, aerospace, electronics and information technology, energy and industry, and healthcare.
| Application Area | Specific Products | Performance Features | Specific Applications |
| Transportation | Automobiles | High temperature resistance, wear resistance, excellent mechanical properties, metal substitute | Materials inside engine compartments, automotive bearings, pads, seals, clutch parts, automotive transmissions, power steering and air conditioning systems, continuously variable transmissions, vacuum pump blades, ABS motors, directional control systems, tail gas exhaust systems, shafts, and electric seat fasteners |
| Aerospace | Aircraft, rocket barrels | Resistant to harsh environments, lightweight, chemical resistance, flame retardant, easy to process | Directly machined into large components with high precision requirements, such as internal parts of aircraft, rocket battery housings, connectors, fasteners, and engine components |
| Electronics & Information | Consumer electronics components | Dimensional stability, high purity, high mechanical performance, no dust generation during processing, excellent dielectric properties | Speaker diaphragms, headphone moving coils, smartphone antenna brackets |
| Electronic products, semiconductor wire & cable components | Excellent electrical insulation performance, good processing and chemical resistance, corrosion resistance | 300mm chip carriers, CMP retaining rings, wafer clamps, pure silk membranes, connectors, PCB substrates, high-speed connectors, selector switches | |
| Energy Exploration & Industrial | Oil exploration and nuclear products | Abrasion resistance, low moisture absorption, hydrolysis resistance | PEEK tubing resists surface adhesion of crude oil during transport, improving crude oil flowability, and prevents deposition of paraffin and asphalt, reducing routine maintenance costs for crude oil pipelines |
| High-end manufacturing components | Excellent mechanical properties, chemical resistance | Pen tips, pump bodies, screw compressors, gears, sealing components, |
3.Lightweighting of automotive parts is driving rising demand for PEEK.
With the growing demand for lightweighting and energy conservation and emission reduction in the automotive industry, PEEK’s excellent friction resistance and mechanical properties make it suitable for replacing metal in key components, making it a key material for achieving automotive lightweighting. Currently, the battery bracket of the Tesla Model S uses 30% glass fiber-reinforced PEEK, which reduces weight while improving battery safety and reliability, and increases collision energy absorption by 35%.
Thus, the growing automobile production is driving rising demand for PEEK. According to data, my country’s automobile production will increase from 28.1188 million units to 31.282 million units from 2016 to 2024. In 2022, the scale of PEEK application in my country’s automotive sector will reach 526.87 tons (with a market value of 299 million yuan), and is expected to reach 1,360.59 tons (with a market value of 687 million yuan) in 2027, with a CAGR of 20.89% from 2022 to 2027.
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Robotics Brings New Growth to the PEEK Industry
In the robotics field, PEEK, with its comprehensive advantages such as lightweight, extreme environment resistance, low friction and wear, and electromagnetic compatibility, overcomes the inherent limitations of metals, ordinary plastics, and ceramics in terms of reliability, energy efficiency, and integration. It has become a key material for robotics, used in motors, bearings, reducers, housings, and other components.
| Part | Application |
| motor | PEEK can be used in bearing cages, rotor sleeves, thin film motor slots, enameled wires and other parts, achieving insulation while also having good heat dissipation performance. |
| reducer | Compared with ordinary metal gears, PEEK reduction gears have the following advantages: small size, high torque, low noise, full speed ratio, stable performance, instantaneous conversion, high efficiency, energy saving and low heat generation. |
| worm gear | It can realize 90° angle transmission and has self-locking function (to prevent reverse movement); lightweight, self-lubricating and maintenance-free |
my country has designated the robotics industry as a strategic priority. Through policy guidance, R&D investment, and industry chain collaboration, China is promoting technological breakthroughs and large-scale deployment, driving the industry’s continued rapid development. Robotics is expected to become a new engine for PEEK growth. According to relevant data, a single robot consumes approximately 6.6 kg of PEEK (including 1 kg of PEEK and 8 kg of CF/PEEK), assuming each robot consumes 5-10 kg of PEEK. If robot production reaches one million units, under a neutral scenario, robots are expected to drive PEEK demand of 7,500-8,000 tons, corresponding to a market size of approximately 3 billion yuan. Furthermore, with breakthroughs in material modification technologies (such as nanofilling and fiber reinforcement) and the arrival of the “first era” of humanoid robots, PEEK’s application in applications such as dexterous hands and transmission systems will further expand, and per-machine consumption is expected to gradually increase.
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