EU Project Advances Vitrimer Composite Blades with Successful Infusion Trials

Published date:13/04/2026 | Last updated date:13/04/2026

A European research initiative has reported successful trials in manufacturing basalt-fibre-reinforced vitrimer composite laminates, marking a step toward more sustainable wind turbine blades and potentially redefining end-of-life strategies in the wind energy sector.

The work is being carried out under the EU-funded EOLIAN project, which aims to produce a 12-meter demonstrator wind turbine blade using vitrimer-based composite materials as an alternative to conventional glass-fibre-reinforced thermosets.

Moving beyond traditional thermoset limitations

Current wind turbine blades rely heavily on thermoset composites, which offer strong structural performance but present serious recycling challenges. Once cured, these materials cannot be remelted or reshaped, limiting reuse options and increasing waste at end of life.

The EOLIAN team is targeting this limitation directly by introducing vitrimers, a class of polymers that combine the mechanical stability of thermosets with the reprocessability of thermoplastics.

Researchers highlight several key advantages:

• repairability using heat and pressure
• reprocessability through thermoforming
• potential for chemical recycling to separate fibre and matrix

According to project coordinator Marco Monti of Proplast, vitrimer systems could provide a practical route to solving one of the wind industry’s most persistent sustainability issues.

Overcoming infusion challenges with tailored resin systems

Despite their potential, vitrimers have historically been difficult to process using standard composite manufacturing methods.

One major obstacle is high resin viscosity combined with a short processing window. Vacuum infusion, the dominant process for wind turbine blades, requires low-viscosity resins to ensure complete fibre wet-out.

The research team addressed this by developing tailored vitrimer formulations, balancing processability with final material performance.

Key process adjustments include:

• heating moulds to approximately 40°C to improve resin flow
• incorporating reactive diluents to reduce viscosity
• maintaining required glass transition temperature (Tg) for structural performance

The result is a workable infusion process capable of producing laminates under moderate conditions, between room temperature and 80°C.

Bio-based materials and balanced composite structure

The project also emphasizes sustainability at the material level. The vitrimer systems are synthesized using bio-derived components, including vanillin and epoxidised vegetable oils, which are available at industrial scale.

The resulting composites are reported to be approximately 60% bio-based, while achieving:

• a balanced 1:1 fibre-to-resin volume ratio
• low void content
• consistent laminate quality

Basalt fibre reinforcement further contributes to environmental performance, offering an alternative to traditional glass fibre.

Integrated sensors to extend blade life

Beyond materials and processing, the project is integrating structural health monitoring systems directly into the composite.

Using in-mould electronics, the team is embedding sensors capable of detecting:

• surface erosion
• ice formation
• early-stage structural damage

These systems are designed to improve maintenance planning, extend blade service life, and enhance operational safety.

Scaling toward industrial validation

The next phase of the project will focus on scaling the technology and validating its performance against existing solutions.

Key steps include:

• prototype blade manufacturing by Norvento Enerxía
• benchmarking against conventional epoxy-based composite blades
• life cycle assessment (LCA) and cost analysis (LCOE)
• process optimization for industrial scalability

Italian partner AEP Polymers is also working on adapting the manufacturing process for large-scale production.

Broader implications for composites industry

While wind energy is the immediate focus, the implications of vitrimer technology extend beyond a single sector.

Monti suggests that industries facing stricter end-of-life regulations, particularly automotive, could benefit from materials that allow controlled repair, reshaping, or disassembly.

Potential future applications include:

recyclable high-performance materials

reversible structural adhesives

repairable composite components

🔒 Content Transparency & Editorial Integrity

This article is developed based on real engineering experience, machine testing data, and practical production knowledge from Jota Machinery’s work in advanced composite manufacturing.

All technical explanations—including material structure, processing methods, and performance characteristics—are reviewed and verified by our engineering team to ensure accuracy and real-world relevance.

To improve clarity and structure, AI-assisted tools may have been used during content organization and language refinement. However:

• All key technical insights originate from first-hand industrial experience
• All data and claims are manually reviewed and validated
• The content is created with the primary goal of educating engineers, manufacturers, and buyers

We do not publish content solely for search ranking purposes. Every article is designed to provide practical, experience-based value to professionals in the composite materials industry.

Editor’s Note

The successful infusion trials represent a meaningful technical step rather than a final solution. The real challenge will be proving that vitrimer composites can meet the wind industry’s demanding standards for cost, durability, and scalability.

However, the direction is clear. As pressure mounts to address composite waste, materials that combine performance with reusability are moving from laboratory research toward industrial relevance.

If vitrimer systems can be scaled effectively, they may reshape not only how wind turbine blades are manufactured—but how composite materials are designed for their entire lifecycle.