Developing component-scale composites using nanocarbons

26th August 2015
Posted By : Nat Bowers
Developing component-scale composites using nanocarbons

 

At the recent 20th International Conference on Composite Materials (ICCM) and in conjunction with Haydale, researchers from Cardiff University presented the results from an in-depth study titled Developing Component-Scale Hierarchical Composites Using Nanocarbons.

The phenomenal properties reported for nanocarbons such as carbon nanotubes and graphene have generated much interest for their use in composite materials. Theoretical predictions demonstrate the potential for significant improvements in strength, stiffness and multi-functionality of materials. Despite many promising results, the issues of repeatability and scale-up have yet to be adequately addressed, with manufacture limited to small lab-scale samples.

In the work described, researchers from Cardiff University and Haydale explore techniques for component-scale manufacture of hierarchical composites by liquid infusion, using both carbon nanotube and graphene materials. A unique plasma process, developed by Haydale, was adopted for controllable functionalisation of large batches of nanocarbons (100s of grams) prior to mixing with epoxy resin. A rheological study indicated that filler morphology, functionalisation and fill weight all have an effect on epoxy resin viscosity.

Using these developed nanocomposite resins, a Resin Infusion under Flexible Tooling (RIFT) technique was developed. Resin flow studies informed an optimum setup that facilitated full wet-out of large area UD carbon fibre laminates and the resulting materials showed significant improvements in mechanical properties, demonstrating up to an approximately 50% increase in Compression After Impact (CAI) properties. The RIFT process and tooling were further developed to enable the manufacture of I-section stiffeners and the production of component-scale (0.9x0.55m) stiffened panels was demonstrated.

The scalability of the Haydale graphene plasma functionalisation technique, resin mixing and resin infusion processes has been demonstrated by the manufacture of component-scale stiffened composite panels. The advances in composite material strength and stiffness will be of considerable interest to the aerospace and automotive industry in particular.


You must be logged in to comment

Write a comment

No comments




More from University of Cardiff

Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Girls in Tech | Catalyst | 2019
4th September 2019
United Kingdom The Brewery, London
DSEI 2019
10th September 2019
United Kingdom EXCEL, London
EMO Hannover 2019
16th September 2019
Germany Hannover
Women in Tech Festival 2019
17th September 2019
United Kingdom The Brewery, London
European Microwave Week 2019
29th September 2019
France Porte De Versailles Paris