Nanotechnology Now – Press Release: Graphene takes off in composites for planes and cars: The Graphene Flagship identified the strategic advantages of integrating graphene into fibre composites, used to build planes and cars


Home > Press > Graphene takes off in composites for planes and cars: The Graphene Flagship identified the strategic advantages of integrating graphene into fibre composites, used to build planes and cars

Abstract:
The Graphene Flagship brought together top European researchers and companies to discuss the most disruptive ways graphene could enhance composites used in the aerospace, automotive and energy industries. The multidisciplinary team involved researchers from academic institutions, business enterprises such as Graphene Flagship Partners Nanesa and Avanzare, and large transportation end-user industries, such as Graphene Flagship Partners Airbus and Fiat. They showed that integrating graphene and related materials (GRMs) into fibre-reinforced composites (FRCs) has great potential to improve weight and strength, and helps to overcome the bottlenecks limiting the applications of these composites in planes, cars, wind turbines and more. Nowadays, the transportation industry is responsible for nearly one-third of global energy demand, and it is the major source of pollution and greenhouse gas emissions in urban areas. Graphene Flagship scientists are therefore continually trying to develop new materials to lower fuel usage and CO2 emissions, helping to mitigate environmental damage and climate change.

Graphene takes off in composites for planes and cars: The Graphene Flagship identified the strategic advantages of integrating graphene into fibre composites, used to build planes and cars


Brussels, BE | Posted on December 5th, 2019

Graphene-integrated composites are an example of lighter materials with great potential for use in vehicle frameworks. They are constructed by introducing graphene sheets, a few billionths of a metre thick, into hierarchical fibre composites as a nano-additives. Hierarchical fibre composites are a type of composite material in which components of different sizes are combined in a controlled way to significantly improve the mechanical properties. They typically consist of micro- or mesoscopic carbon fibres, a few millionths of a metre thick, attached to a polymer matrix, and they are already used as building materials to make vehicles of all shapes and sizes.

Graphene’s high aspect ratio, high flexibility and mechanical strength enable it to enhance the strength of weak points in these composites, such as at the interface between two different components. Its tunable surface chemistry also means that interactions with the carbon fibre and polymer matrix can be adjusted as needed. The fibre, polymer matrix and graphene layers all work together to distribute mechanical stress, resulting in a material with improved strength and other beneficial properties.

There are many challenges to consider. For instance, planes experience temperature changes between 20 °C and -40 °C every time they take off and land, with huge differences in pressure and humidity. Graphene-integrated composites therefore need to withstand water condensing and even freezing inside the fuselage. They also need to endure lightning strikes, which happen several times per month, so the conductive properties of graphene must be harnessed to create an electrically conductive framework that resists electromagnetic impulses. In cars, new structural materials must be able to withstand crash tests and be lightweight enough to ensure fuel efficiency. Graphene Flagship researchers are also investigating conductive materials to replace circuitry in car dashboards.

Researchers and end-users come together

Graphene Flagship partners at Queen Mary University and the National Graphene Institute, UK, FORTH-Hellas, Greece, CNR, Italy, and Chalmers University of Technology, Sweden, collaborated with researchers at the University of Turin, the University of Trento and KET-LAB, Italy, and the University of Patras, Greece, to provide perspectives from the research community. They worked with scientists at Graphene Flagship partner companies Nanesa, Italy, and Avanzare, Spain, to review the technological viability of graphene-incorporated FRCs.

Francesco Bertocchi, co-author of the paper and President of Nanesa, believes that graphene-incorporated FRCs are indeed feasible for vehicle design, and has created new composites with many essential properties for the transportation industries. “Thanks to the Graphene Flagship, Nanesa has worked in close synergy with many partners to create many different prototypes. These include properties such as flame retardancy, water vapor absorption barrier, high electrical and thermal conductivity, EMI shielding. We also integrated thermo-resistive systems for de-icing and anti-icing ,” he says.

Graphene Flagship Partners Airbus and Fiat-Chrysler Automobiles, world leading aerospace and automotive industries, evaluated the impact of graphene-incorporated FRCs on the aerospace and automotive industries and assessed their commercial viability.

Tamara Blanco-Varela, co-author and materials & processes engineer at Airbus, explains that Airbus is working hard to make these materials viable for use in new aircraft models. “We all know that the aeronautical sector is very challenging for the introduction of new materials or technologies. Airbus is committed to making graphene-related materials fly as soon as possible, and a step-by-step approach is being set up,” she says. By selecting ‘quick-win’ applications with immediate benefits to the aerospace industry, she anticipates that graphene-integrated FRCs will reach the market soon.

“One example is using these materials for anti- and de-icing purposes in aeroplanes, for which Airbus will be leading activities targeting commercial exploitation of this technology. We are hoping for it to reach a high maturity level, with a target readiness level between five and six, in the next few years.”

Brunetto Martorana, co-author and researcher at Graphene Flagship partner Fiat-Chrysler Automobiles, adds: “The interesting structural properties of graphene have opened an interesting window for designing novel light composites.” He explains that new lightweight composite materials do not necessarily need to be lower in strength and introduce safety issues. “New approaches must be found to enhance the ‘crashworthiness’ of composites – and graphene composites may be able to fill that role,” he continues. Fiat-Chrysler Automobiles have now committed to the commercialization of new composite materials, and will be leading a new initiative to bring this technology to market.”

An uplifting outlook

“The Graphene Flagship provides a stable, clear, long-lasting partnership for different partners to work together. They all started their collaboration as part of our Composites Work Package”, comments Vincenzo Palermo, Graphene Flagship Vice-Director and lead author of the paper. “The Graphene Flagship pushes all partners to have frequent interactions, with regular meetings – like in this case, partners who begun working on graphene with different motivations have come together to address common challenges,” he says.

Galiotis, the Graphene Flagship’s Composites Work Package leader, expresses that this collaboration has been highly valuable. “This a comprehensive review of the work undertaken in the Graphene Flagship, and elsewhere, to confirm that the addition of GRMs provides benefits to many applications in the aerospace, automotive, energy and leisure industries.” Galiotis expresses particular interest in the review’s analysis of the best ways to process GRMs into composites, the effect of this on the overall composite performance, and the challenges scientists face in the search for high performance composites. “Overall, I think this is a timely review article for the composites field, which should be read with interest by all parties involved with composite development and usage,” he concludes.

Andrea C. Ferrari, Science and Technology Officer of the Graphene Flagship and Chair of its Management Panel, comments: “This paper shows the leadership of large corporations and small enterprises, all partners of the Graphene Flagship, in taking graphene composites to the market in the next few years. This yet again shows the steady progress of the Graphene Flagship along its technology and innovation roadmap.”

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For more information, please click here

Contacts:
Dr Fernando Gomollon-Bel

44-122-376-2391

@GrapheneCA

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