Composites have always utilised the specific properties of individual component parts that when mixed together produce a material with combined benefits. Traditionally those constituent parts have been a reinforcement, such as glass or carbon fibre, and a thermoset or thermoplastic matrix.
The recent discovery of Graphene and its long list of properties however provides a third major constituent material whose properties can be imparted into the composite.
Research (Cardiff School of Engineering, EU Cleansky) has highlighted that Haydale functionalized GNP and CNT carbon reinforced composites produced a 50% increase in compression after impact (CAI) strength. In-plane shear strength was also improved by up to 60% highlighting the strengthening and toughening.
The addition of functionalized Graphene within resin and composite materials can provide a wide range of benefits including:
- Electrical conductivity
- Thermal conductivity and heat management
- Structural properties (toughness, strength, modulus, interlaminar, CAI)
- Permeation resistance
- Sensing ability
HAYDALE Composite Solutions (HCS) is a distinct unit within the HAYDALE Group that specializes in the commercial development of resin, adhesives and composite materials with nano-improved performance. Based in Loughborough, England, HCS work with OEM suppliers, fiber and resin manufacturers and end users from all industrial arenas to manufacture compatible nanomaterial solutions for their product.
TYPICAL MATERIALS USED:
Inks & Coatings Solutions
THE APPLICATIONS FOR GRAPHENE-BASED INK AND COATINGS INCLUDE THE FOLLOWING:
- Barrier coatings
- Electrically conductive inks for printed circuits and flexible electronics, antennas, or sensors and biosensors for medical applications
- Thermal coatings and greases for heat dissipation
- Coatings for EMI shielding or electrostatic discharge
The agreement with the Welsh Centre for Printing and Coating (WCPC) signed in July 2014 has enabled us to deliver a high quality and consistent commercially available graphene-based ink. Together, we aim to investigate further opportunities to exploit functionalized graphenes and other nanomaterials.
Inks and coatings have huge potential as they are ubiquitous and can be readily enhanced by low levels of particulate additions – for example, a patent application has been recently made on a high surface area (intelligent) pressure sensor that uses graphene based ink. It can be shaped and is thinner than a normal credit card. The novel multiple sensor points can be large area thereby adding substantial additional functionality for a diverse range of market opportunities from security flooring, leak detection in industrial gas and water pipes, to assessment of gait in injured sports people.
3D Printing Solutions
3D PRINTING (ALSO KNOWN AS ADDITIVE MANUFACTURING) ENABLES DESIGNERS TO PRODUCE COMPONENTS OR MODELS DIRECTLY FROM CAD SOFTWARE WITHOUT THE NEED TO MANUFACTURE MOULDS OR TOOLING. THIS IS A FAST GROWING AND SIZEABLE MARKET TODAY ESTIMATED TO BE WORTH OVER $30BN BY 2022. SOURCE: MARKETSANDMARKETS.COM (APRIL 2016).
The Haydale graphene enhanced PLA filaments, available in 1.75mm and 2.85 mm diameters, have been trialled by a number of 3D printing companies who have reported a number of major benefits, including:
- Excellent first layer adhesion and z axis strength retention;
- Major increase in speed of processing;
- Improved strength and stiffness;
- Better impact performance;
- Excellent print quality and surface finish;
- Improved dimensional accuracy; and
- Compatibility with a broad range of printers and ease of use.
Our graphene enhanced PLA filaments are available in the US from Afinia.