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1. WO2016092267 - NANOTUBES DE CARBONE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

Claims

1. A method of growing a carbon nanotube on a carbon fabric comprising at least one carbon fibre, the method comprising providing the carbon fabric with a catalyst on a first surface thereof, and growing a carbon nanotube from the catalyst, characterised in that the carbon fabric does not comprise polymer sizing during the nanotube growth step.

2. A method according to claim 1, wherein the method comprises providing the carbon fabric with a catalyst on a second surface of the carbon fabric, and growing a carbon nanotube therefrom.

3. A method according to either claim 1 or 2, wherein the catalyst comprises a material selected from a group consisting of: copper (Cu), nickel (Ni), ruthenium (Ru), cobalt (Co), iron (Fe), rubidium (Rd), platinum (Pt), iridium (Ir), palladium (Pd), rhodium (Rh), carbides, silver (Ag), gold (Au), manganese (Mn), molybdenum (Mo), chromium (Cr), Tin (Sn), magnesium (Mg), aluminium (Al), silicon carbide (SiC), germanium (Ge), silicon (Si), diamond, steel or a composite of any two or more of the aforementioned materials.

4. A method according to any preceding claim, wherein the step of providing the carbon fabric with a catalyst on the carbon fabric comprises sputter depositing a suitable material onto the carbon fabric, thereby creating a catalyst layer thereon.

5. A method according to any preceding claim, wherein the method comprises providing the carbon fabric with a support layer before the step of providing the carbon fabric with a catalyst.

6. A method according to claim 6, wherein the support layer comprises copper (Cu), nickel (Ni), ruthenium (Ru), cobalt (Co), iron (Fe), rubidium (Rd), platinum (Pt), iridium (Ir), palladium (Pd), rhodium (Rh), carbides, silver (Ag), gold (Au), manganese (Mn), molybdenum (Mo), chromium (Cr), Tin (Sn), magnesium (Mg), aluminium (Al), silicon carbide (SiC), germanium (Ge), silicon (Si), diamond, steel or a composite of any two or more of the aforementioned materials.

7. A method according to claim 5 or 6, wherein the carbon fabric comprises polymer sizing which is removed before the carbon nanotube growth step.

8. A method according to claim 7, wherein the method comprises annealing the support layer after it has been provided onto the sized carbon fabric, such that the step of annealing the support layer comprises heating the carbon fabric to a temperature which is adequate to remove the polymer sizing.

9. A method according to any preceding claim, wherein the step of growing the carbon nanotubes comprises growing carbon nanotubes in a chemical vapour deposition (CVD) system.

10. A method according to any preceding claim, wherein the step of growing the carbon nanotubes comprises heating an upper surface of the carbon fabric to a temperature of at least 400°C, 500°C or at least 6oo°C.

11. A method according to any preceding claim, wherein the step of growing the carbon nanotubes comprises maintaining the bulk of the carbon fabric at a temperature below 6oo°C, 470°C or below 250°C.

12. A method according to any preceding claim, wherein growth of CNTs comprises using a carbon feedstock such as acetylene (C2H2), ethylene (C2H4), methane (CH4), carbon monoxide (CO), camphor, naphthalene, ferrocene, benzene, ethanol, or any other carbon feedstock.

13. A carbon fabric composite comprising a plurality of carbon fibres with one or more carbon nanotubes attached thereto, obtained or obtainable by the method of any one of claims 1 to 12.

14. A carbon fabric composite comprising a plurality of carbon fibres with one or more carbon nanotubes attached thereto, wherein the one or more carbon nanotubes comprise at least 3%, 4%, and more preferably at least 5% of the mass of the carbon fabric composite.

15. A carbon fabric composite comprising a plurality of carbon fibres with one or more carbon nanotubes attached thereto, wherein one or more of the carbon fibres is functionalised with oxygen and/or n-doped with nitrogen, and the or each carbon fabric composite was prepared by the method of any one of claims 1 to 12.

16. Use of a composite according to any one of claims 13 to 15 in aerospace, automobile, transport, electronic and defence industries, decorative coatings, multifunctional and/or smart materials, ablative coatings, camouflage and/or stealth materials, adhesives, coatings, sensors, optoelectronics, fuel cells and/or membranes, optoelectronics, structures and magnetics.