High-Performance Materials for Renewable Energy
Renewable energy systems operate in environments that test materials to their limits. Offshore wind installations face relentless salt spray, extreme temperature shifts, and high mechanical loads over service lives measured in decades. Hydrogen systems must contain the smallest molecule on earth under high pressure, across wide temperature ranges, and through thousands of pressure cycles. Solar infrastructure demands UV stability, weathering resistance, and dimensional consistency in outdoor environments where maintenance access is limited.
Fluorocarbon's Fluorinoid® material register, comprising over 500 grades of fluoropolymers and engineering plastics, provides the material foundation for components across all four renewable energy application areas. Our materials team works with engineers and procurement teams to define the right grade for the specific operating environment, whether that is a hydrogen sealing system, a wind turbine bearing, an energy storage component, or a solar handling application.
How Fluoropolymers Enhance Renewable Energy Applications
Key Renewable Energy Materials, Properties & Applications
Materials are selected and supplied with a clear understanding of how they will perform in service, not just at initial design review but throughout the operational life of the programme.
PTFE is the most widely specified fluoropolymer across renewable energy applications, from hydrogen sealing systems and electrolyser components through to wind turbine bearing interfaces and solar industry chemical handling. Its near-universal chemical resistance, low friction, UV stability, and wide operating temperature range (continuous service to 260°C) make it suitable for static seals, valve seats, gaskets, and sliding bearing interfaces across the full range of renewable energy equipment.
In hydrogen applications, PTFE maintains excellent stability across the temperature and pressure cycles encountered in production, storage, and distribution systems. Unlike elastomers, PTFE does not suffer from hydrogen embrittlement or significant permeation degradation, making it a reliable choice for static sealing in hydrogen processing equipment.
Key Properties:
- Near-universal chemical resistance including electrolytes, hydrogen, acids, and process chemicals
- Continuous service from –200°C to +260°C
- UV resistant: remains flexible and durable under prolonged outdoor exposure, unlike many other plastics
- Very low coefficient of friction, self-lubricating without additives
- Filled grades available for improved creep resistance, wear resistance, and dimensional stability under load
Typical Renewable Energy Applications:
Hydrogen valve seats and static seals, Electrolyser component sealing, Wind turbine bearing pads and slide interfaces, Solar industry chemical handling components, Energy storage system sealing and insulation elements
PCTFE is the primary material for hydrogen sealing applications where gas permeability must be minimised.
As the fluoropolymer with the lowest gas and moisture permeability, PCTFE is specified where PTFE's higher permeability would allow unacceptable hydrogen migration, particularly in high-pressure hydrogen storage, distribution, and fuelling system components.
Its excellent dimensional stability under sustained compressive load ensures seating force is maintained across thousands of pressure cycles without creep or seat relaxation.
Key Properties:
- Lowest gas permeability of any fluoropolymer – critical for hydrogen containment
- Lowest moisture absorption of any fluoropolymer
- Excellent dimensional stability from cryogenic temperatures to +150°C
- Maintains sealing integrity under sustained load, with significantly lower creep than PTFE
- Chemical resistance to hydrogen, process gases, and aggressive media
Typical renewable energy applications:
High-pressure hydrogen storage seals, Hydrogen fuelling station components, Cryogenic hydrogen interface seals, High-integrity valve seats in hydrogen distribution systems
PEEK is the engineering plastic of choice for structural and dynamic applications across renewable energy equipment, particularly in hydrogen compression systems, wind turbine mechanical assemblies, and energy storage structural components where dimensional stability under combined thermal and mechanical load is critical.
Its combination of high mechanical strength, chemical resistance, and thermal performance makes it a proven metal replacement in bearing cages, wear rings, and high-load structural elements.
Key Properties:
- High mechanical strength and dimensional stability at elevated temperatures (continuous service to 250°C)
- Excellent wear resistance in dynamic applications under sustained load
- Chemical resistance to hydrogen, electrolytes, and process chemicals
- High strength-to-weight ratio – a proven metal replacement reducing component weight
- Low outgassing in vacuum-compatible grades
Typical Renewable Energy Applications:
Hydrogen compression wear components, High-pressure valve structural elements, Wind turbine bearing cages and wear rings, Energy storage structural and insulating components, Electrolyser pump wear parts
Case Study: PEEK Labyrinth Seals for a Hydrogen Centrifugal Compressor
A hydrogen centrifugal compressor prototype presented a material challenge that standard metal specifications couldn't reliably solve. The process gas was almost 100% hydrogen at approximately 70 bar, the temperature range spanned –46°C to 200°C, and the presence of potassium hydroxide in water vapour created a corrosive environment that ferrous and non-ferrous metals struggle to endure over time. The customer's primary concern was finding a material that could handle the combined chemical and low-temperature demands simultaneously.
Fluorocarbon evaluated the application against the Fluorinoid® material register and identified Fluorinoid® FL354 – a PEEK grade showing no adverse reactions with either potassium hydroxide or hydrogen – as the appropriate specification. Following design analysis to confirm seal integrity and longevity, PEEK labyrinth seals were machined and supplied for the compressor prototype, replacing the conventional metallic approach with a material better suited to the actual operating environment.
FEP provides similar chemical resistance to PFA with the additional advantage of optical transparency and flexibility.
Specified in hydrogen and chemical delivery line applications where visual inspection of fluid flow is required, and in solar industry applications where flexible tubing with chemical barrier performance is needed.
Its UV stability and chemical inertness make it suitable for outdoor renewable energy infrastructure without the degradation risk that affects many standard polymers.
Key Properties:
- Chemical inertness across acids, bases, and process chemicals (continuous service to 200°C)
- Optically transparent, allowing visual inspection of fluid flow
- More flexible than PTFE at room temperature
- UV-resistant and weathering-stable for outdoor applications
- Low extractables suitable for high-purity fluid contact
Typical Renewable Energy Applications:
Hydrogen and chemical delivery tubing, Solar industry fluid handling lines, Battery electrolyte handling systems, Outdoor fluid system components requiring UV stability
Key Renewable Energy Materials
UHMWPE (Ultra-High Molecular Weight Polyethylene) provides outstanding wear resistance and low friction at a lower cost than engineering fluoropolymers, making it the preferred material for wear-intensive handling applications in solar manufacturing and wind turbine component transport.
Its excellent abrasion resistance and low surface energy make it well-suited for guide rails, slide pads, and handling components in high-throughput manufacturing environments.
Key Properties:
- Exceptional wear resistance: one of the most abrasion-resistant engineering plastics available
- Very low coefficient of friction: suitable for sliding and handling applications
- Impact resistant: absorbs shock loading without fracture
- Lightweight and lower cost than fluoropolymers for wear applications
- Suitable for outdoor environments with good weathering resistance
Typical Renewable Energy Applications:
Solar panel handling and transport components, Wind turbine component support pads and guide elements, Conveyor and handling system wear liners, Support clamp bearing pads for monopiles transport
PVDF provides higher mechanical rigidity than PTFE, making it the preferred fluoropolymer for structural components in electrolyser systems, battery enclosures, and chemical processing equipment within renewable energy plants.
Its combination of chemical resistance to electrolytes and process acids, structural integrity under mechanical load, and UV stability makes it well suited for both indoor process equipment and outdoor-exposed structural elements.
Key Properties:
- Higher tensile strength than PTFE, making it suitable for load-bearing structural applications
- Chemical resistance to electrolytes, acids, and hydrocarbon-based process fluids
- Continuous service to approximately 150°C
- UV-resistant and weathering stable for outdoor applications
- Cleanroom compatible where required
Typical Renewable Energy Applications:
Electrolyser cell structural components, Battery enclosure and housing elements, Chemical delivery and process piping in renewable energy plants, Outdoor structural elements requiring UV and chemical resistance
For structural, insulating, and high-temperature applications across wind, hydrogen, and energy storage systems, Fluorocarbon supplies a range of engineering thermoplastics engineered for combined thermal, chemical, and mechanical demands.
PPS provides chemical resistance and dimensional stability to approximately 220°C, suitable for pump housings and structural elements in aggressive chemical environments.
Polycarbonate (PC) provides impact resistance and dimensional stability for battery and energy storage housing components.
PET provides dimensional stability and mechanical performance for solar industry handling fixtures and support structures.
Key Properties:
- Combined thermal, chemical, and mechanical performance tailored to specific application requirements
- PPS: chemical resistance and thermal stability to ~220°C for process and structural applications
- PC: impact resistance and dimensional stability for energy storage and battery housing applications
- PET: dimensional stability and mechanical performance for handling and support applications
- All grades available as semifinished stock or precision-machined components
Typical Renewable Energy Applications:
Electrolyser and fuel cell structural components, Battery housing insulation elements, Solar industry handling fixtures, Wind turbine electrical insulation components
Case Study: Material Selection in Practice
When a European space technology company requested a PTFE coating for aluminium components in vacuum operation, Fluorocarbon's team challenged the initial brief. Systematic evaluation of outgassing risk, adhesion requirements, and tribological constraints led to a structured PFA-based multi-layer solution rather than the originally specified material.
Supporting Material Selection & Development
Renewable energy applications frequently involve emerging technologies where material qualification data is still being developed.
Fluorocarbon's materials team supports engineers from early design stage through to production qualification, including material feasibility assessment for novel hydrogen and energy storage environments; grade selection and comparative testing support; sample supply for customer evaluation and system-level testing; and material change management for programmes where initial specifications evolve as the technology matures.
Our material expertise is directly integrated with our precision machining and quality teams, so advice given at the design stage is backed by the capability to manufacture and document the result.