Hvmg14okemp

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www.hvm-uk.com 2014 Talk at HVM Graphene+ Oxford

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Hvmg14okemp

  1. 1. The Role of Functionalisation in the Graphene Supply Chain HVM Graphene 2014, Oxford 15/05/2014 ©Haydale2014
  2. 2. Haydale evolution Haydale set up 2003 Innovative Carbon Ltd. (ICL) purchased Haydale in May 2010  Invested £5m to January 2014 to support expansion and growth  Process patent applications in 2009-2012. International phase started  Significant work on CNTs  Added mined graphite in November 2011  Production of Graphene Nano Platelets (“GNPs”)  New bespoke facility for processing nano materials opened in May 2013- cost £0.5m  Market testing on UK conductive Graphene based ink in June 2013  No metal additives, 20 ohms/sq, coverage 550 cm²/gm  Current functionalisation of nano particles: up to 1 tonne  Functionalisation process positively reported on by NPL  ISO 9001 accreditation Jan 2014  Launched IPO 14th April
  3. 3. Graphene Issues • Graphene is inert until functionalised • Graphene supply quality is inconsistent • Graphene needs to be an affordable price • Need standardised classification of materials
  4. 4. Why Functionalise ? Grapheneis inert Correct functionalisation produces enhanced product performance Bespoke Applications Cost-Benefit Improvement Consistent Product Performance Produces Homogeneous Material Enables Dispersion and Facilitates Mixing ©Haydale2014
  5. 5. The Haydale approach ©Haydale2014
  6. 6. HDPlas™ : standard functionalisation processes 6 O2 Ar NH3 COOH N2 Plasma Process Low temperature Low energy ‘F’ ©Haydale2014
  7. 7. Haydale split plasma processing • Low pressure, low temperature gas plasma • Controlled gas and vapour mixtures for bespoke functionalisation • Plasma interacts with the CNT / GNP surface, attaching “free radicals” Graphene Nanoparticle High-energy electrons generated in the plasma can “split” or disassociate molecules into their component parts. These charged particles readily bond with a surface.
  8. 8. Haydale Process Benefits • No acid processing • No toxic waste stream • No post processing drying • Low temperature processing • Bespoke materials • Controlled functionalisation of nano materials • No catastrophic microstructural damage • A scalable production route Functionalisation verified by National Physical Laboratory
  9. 9. De-agglomerationCNTsGNPs HDPlas™ Industrial
  10. 10. Exfoliating Clean Undamaged CNTs and Graphenes by Split Plasma
  11. 11. TEM images of MWCNT As manufactured MWCNT After plasma processingAfter acid functionalisation
  12. 12. Dispersion in Liquids 12 ©Haydale2014
  13. 13. Dispersion in Resins 0.5 wt% Functionalised HDPlas CNTs in epoxy resin 0.5 wt% NON Functionalised CNT in epoxy resin Epoxy (no filler) ©Haydale2014
  14. 14. Customer comment about HDPlasTM GNP material “Our tensile strength and modulus results have been outstanding and increases as a function of loading have shown continuous increases of over 100% at relatively higher loading levels. Your split plasma method is very efficient with regards to uniformity”.
  15. 15. Multitude of applications
  16. 16. 70% 80% 90% 100% 110% 120% 130% NORMALISED%VALUES Tensile Performance of GNP Modified HDPE Tensile Strength Young's Modulus 60% 70% 80% 90% 100% 110% 120% 130% 140% Control Graphene 1 Nitrogen Graphene 1 Oxygen Graphene 2 Nitrogen Normalised%Values Tensile Performance ofGNP Modified PA66 Tensile Strength Young's Modulus Modified Thermoplastics
  17. 17. HDPlas™ Graphene Inks HDPlas™ Graphene Ink IGSC02001 Screen Printable Conductive Graphene Ink Solids Content 40.0 – 42.0 % Viscosity 7.0 – 11.0 Pa.s Coverage 1g of ink will cover approximately 550 sq cm Sheet Resistance <20 Ω/sq (230 SS mesh, 13 micron emulsion) Cured Thickness Typical 12 microns CUSTOMISATION AND FORMULATION SUPPORT AVAILABLE
  18. 18. Flexible Conductive Graphene Ink ©Haydale2014
  19. 19. HDPlas™ Graphene PEDOT HDPlas™ Graphene PEDOT PEDOT transparent conductive inks are enhanced with HDPlas™ Graphene. Improved electrical performance with minimal effect on light transmission.
  20. 20. To view our product portfolio www.haydale.com Martin.kemp@Haydale.com

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