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Latest Development of Carbon Nano Tubes in Nanocomposites and Structural Composites Luca MEZZO Senior R&D Manager [email_address]
[object Object],STRUCTURAL COMPOSITE:  combination of reinforcement material with a matrix (nanocomposite matrix) mixture of two or more polymers (matrix) with one or more fillers (CNT) Nanocomposite Matrix Reinforcement  material Fiber
CNT random CNT confined CNT  oriented CNT localized Nanocyl Vision from Today Products to Next Generations STARTING POINT FIRST GENERATION SECOND GENERATION THIRD GENERATION A=CNT at the interphase support/matrix B=CNT as central layer in matrix C=CNT at the surface of the matrix A=CNT perpendicular at the interphase support/matrix B=CNT perpendicular to the support and through the tickness of the matrix
From Today to Next Generation, How CNT Properties CNT-Matrix Interactions CNT Dispersion Nanocomposite Processing Final CNT Network Final  Targeted Properties
STARTING POINT, CNT Random Main benefits Side benefits
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
FIRST GENERATION I, CNT Confined
M w  12,400 M w  14,600 M w  15,900 M w  19,300 M w  21,300    Within the M w  range of investigated, we observed a  Lilly-like effect   that was characterised by unique exfoliation pattern. Lilly    The Lilly’s pattern conforms to a trend with respect to M w  (see schema). Schema    Lower M w  = loosely spread Lilly  Higher M w  = densely populated Lilly  PlastiCyl: Influence of Polymer and Processing
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],cross-over point Loosely spread Lilly  = good surface conductivity Densely populated Lilly = good volume conductivity POSSIBLE CORRELATION
FIRST GENERATION II, CNT Confined Main benefits Side benefits
BioCyl, Morphology ,[object Object],AFM images indicate an important surface modification: reduction of submicronic roughness Patented Technology
Observation: BioCyl passes the fouling test easily at considerably lower settlement levels than the commercial anti-fouling paint. BioCyl: Settlement of Barnacles  After 24 Hours Patented Technology  BioCyl 0 20 40 60 80 100 120 140 glass silicone resin without CNT mean percentage settlement compared to the glass  standard (%) 160 Commercial anti-fouling paint Pass line: paints with lower values pass the fouling test
FIRST GENERATION III, CNT Confined Patented Technology  Main benefits Side benefits
Viscosity evolution of CNTs-filled PDMS (part A)  with shear rate - Huge increase of the viscosity at  lower shear rate - Rheothinning  effect !! ThermoCyl: Interaction CNT - PDMS Patented Technology
ThermoCyl: Affinity CNT-PDMS CNTs-PDMS AFFINITY via  CH-   interactions Adsorption energy per repeat unit ~  2.6±0.1 kcal/mol   Patented Technology
ThermoCyl: Industrial Applications, Cables No burning droplets, low smoke densities . Even after prolonged periods of exposure, the combustions stops after a few seconds.  ,[object Object],[object Object],[object Object],[object Object],[object Object],Patented Technology
ThermoCyl: Industrial Applications, Aircraft Fuel Tanks  Thermal barrier coating ThermoCyl  ISO 2685/ 1100°C / 116 ±10  kW/m 2 Actual solution :  - thickness 4-8 mm    -  42 % fillers loading ALUMINIUM Patented Technology
[object Object],PlastiCyl: FR Achievements in ABS
PlastiCyl: Effect of CNT Dispersion ,[object Object]
FIRST GENERATION IV, CNT Confined Main benefits Side benefits
[object Object]
EpoCyl: Dispersion Rate to Achieve the Right Dispersion = Right Morphology Nanofibers CNT Competitor Hand Mixing Standard mixing High Shear, short time mixing High Shear, long time mixing Neat Epoxy Resin (DGEBA) Nanocomposite NC7xxx Unmodified Resin NC7000 Good Dispersion NC7XXX, average dispersion Structural Composite (Epoxy+carbon fiber 60% fv)
Focus on a replaceable material: Copper mesh The function of this material is to drive the current  resulting from a lightning strike on preferential route. It is generally embedded under one ply of composite material.  Level of conductivity reached by embedded CNTs can help dissipate the strike with less metallic mesh Lighter structures with higher fuel efficiency EpoCyl, Lower Lightning Strike Damage
Patented Technology  Nanocomposite Matrix Reinforcement  material Fiber Sizing
Patented Technology  SiziCyl: Interface Properties Single fiber push-out tests sample Avg value of interfacial strength (Mpa) Virgin glass fibers/epoxy 177 Sized glass fibers/Epoxy 328
CONCLUSIONS ,[object Object],[object Object],[object Object],[object Object],[object Object]
Luca MEZZO [email_address]   + 32/ 71.750.685 Thank You for Your Attention

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CNT in nanocomposites and structural composites

  • 1. Latest Development of Carbon Nano Tubes in Nanocomposites and Structural Composites Luca MEZZO Senior R&D Manager [email_address]
  • 2.
  • 3. CNT random CNT confined CNT oriented CNT localized Nanocyl Vision from Today Products to Next Generations STARTING POINT FIRST GENERATION SECOND GENERATION THIRD GENERATION A=CNT at the interphase support/matrix B=CNT as central layer in matrix C=CNT at the surface of the matrix A=CNT perpendicular at the interphase support/matrix B=CNT perpendicular to the support and through the tickness of the matrix
  • 4. From Today to Next Generation, How CNT Properties CNT-Matrix Interactions CNT Dispersion Nanocomposite Processing Final CNT Network Final Targeted Properties
  • 5. STARTING POINT, CNT Random Main benefits Side benefits
  • 6.
  • 7. FIRST GENERATION I, CNT Confined
  • 8. M w 12,400 M w 14,600 M w 15,900 M w 19,300 M w 21,300  Within the M w range of investigated, we observed a Lilly-like effect that was characterised by unique exfoliation pattern. Lilly  The Lilly’s pattern conforms to a trend with respect to M w (see schema). Schema  Lower M w = loosely spread Lilly Higher M w = densely populated Lilly PlastiCyl: Influence of Polymer and Processing
  • 9.
  • 10. FIRST GENERATION II, CNT Confined Main benefits Side benefits
  • 11.
  • 12. Observation: BioCyl passes the fouling test easily at considerably lower settlement levels than the commercial anti-fouling paint. BioCyl: Settlement of Barnacles After 24 Hours Patented Technology BioCyl 0 20 40 60 80 100 120 140 glass silicone resin without CNT mean percentage settlement compared to the glass standard (%) 160 Commercial anti-fouling paint Pass line: paints with lower values pass the fouling test
  • 13. FIRST GENERATION III, CNT Confined Patented Technology Main benefits Side benefits
  • 14. Viscosity evolution of CNTs-filled PDMS (part A) with shear rate - Huge increase of the viscosity at lower shear rate - Rheothinning effect !! ThermoCyl: Interaction CNT - PDMS Patented Technology
  • 15. ThermoCyl: Affinity CNT-PDMS CNTs-PDMS AFFINITY via CH-  interactions Adsorption energy per repeat unit ~ 2.6±0.1 kcal/mol Patented Technology
  • 16.
  • 17. ThermoCyl: Industrial Applications, Aircraft Fuel Tanks Thermal barrier coating ThermoCyl  ISO 2685/ 1100°C / 116 ±10 kW/m 2 Actual solution : - thickness 4-8 mm - 42 % fillers loading ALUMINIUM Patented Technology
  • 18.
  • 19.
  • 20. FIRST GENERATION IV, CNT Confined Main benefits Side benefits
  • 21.
  • 22. EpoCyl: Dispersion Rate to Achieve the Right Dispersion = Right Morphology Nanofibers CNT Competitor Hand Mixing Standard mixing High Shear, short time mixing High Shear, long time mixing Neat Epoxy Resin (DGEBA) Nanocomposite NC7xxx Unmodified Resin NC7000 Good Dispersion NC7XXX, average dispersion Structural Composite (Epoxy+carbon fiber 60% fv)
  • 23. Focus on a replaceable material: Copper mesh The function of this material is to drive the current resulting from a lightning strike on preferential route. It is generally embedded under one ply of composite material. Level of conductivity reached by embedded CNTs can help dissipate the strike with less metallic mesh Lighter structures with higher fuel efficiency EpoCyl, Lower Lightning Strike Damage
  • 24. Patented Technology Nanocomposite Matrix Reinforcement material Fiber Sizing
  • 25. Patented Technology SiziCyl: Interface Properties Single fiber push-out tests sample Avg value of interfacial strength (Mpa) Virgin glass fibers/epoxy 177 Sized glass fibers/Epoxy 328
  • 26.
  • 27. Luca MEZZO [email_address] + 32/ 71.750.685 Thank You for Your Attention

Editor's Notes

  1. We have to quantify the possible savings
  2. The white on the picture is silice. The process enables a more homogeneous vitrification, what brings a better surface structure.