Method for making carbon nanotube film

Patent metadata

Field	Value
Publication number	US-9611148-B2
Application number	US-201514737857-A
Country	US
Kind code	B2
Filing date	Jun 12, 2015
Priority date	Jun 17, 2014
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

A method for making carbon nanotube film includes providing a first patterned carbon nanotube array and a second patterned carbon nanotube array having a predetermined pattern, wherein the predetermined pattern is a parallelogram. An acute angle of the parallelogram in the second patterned carbon nanotube arrays is adjacent to an obtuse angle of the parallelogram in the first patterned carbon nanotube array. A carbon nanotube film is pulled out from an acute angle vertex of the first patterned carbon nanotube array. A carbon nanotube film preform is pulled out from an acute angle vertex of the second patterned carbon nanotube array and the carbon nanotube film preform is connected to an obtuse angle vertex of the first patterned carbon nanotube array. And then, the carbon nanotube film continues to be pulled.

First claim

What is claimed is:

1. A method for making carbon nanotube film, comprising the following steps:
providing two carbon nanotube arrays spaced from each other and arranged along a X direction, wherein the two carbon nanotube arrays comprises a plurality of carbon nanotubes;
patterning the two carbon nanotube arrays to form two patterned carbon nanotube arrays successively defined as a first patterned carbon nanotube array and a second patterned carbon nanotube array; the plurality of carbon nanotubes of each of the two patterned carbon nanotube arrays form a parallelogram comprising two first sides parallel to each other and two second sides parallel to the X direction, the two first sides of adjacent patterned carbon nanotube arrays are parallel to each other; the parallelogram comprises an acute angle and an obtuse angle, and the acute angle of the second patterned carbon nanotube arrays is adjacent to the obtuse angle of the first patterned carbon nanotube array;
pulling out a first carbon nanotube film preform from a first patterned carbon nanotube array acute angle vertex;
pulling out a second carbon nanotube film preform from a second patterned carbon nanotube array acute angle vertex and connecting the second carbon nanotube film preform to a first patterned carbon nanotube array obtuse angle vertex; and
pulling out the first carbon nanotube film preform along a pulling direction, and the pulling direction is parallel to the X direction.

2. The method of claim 1 , wherein the number of the plurality of carbon nanotubes in the carbon nanotube film and the width of the carbon nanotube film remain substantially unchanged during the pulling out the first carbon nanotube film preform.

3. The method of claim 1 , wherein some carbon nanotubes of the acute angle vertex in the first patterned carbon nanotube array are drawn out, other carbon nanotubes are also drawn out end-to-end due to van der Waals attractive force.

4. The method of claim 1 , wherein an angle between a diagonal line of the parallelogram and the X direction is about 45 degrees.

5. The method of claim 1 , wherein the first carbon nanotube film preform and the second carbon nanotube film preform comprise the plurality of carbon nanotubes joined end to end by van der Waals attractive force and extending along the X direction.

6. The method of claim 1 , further comprising treating the carbon nanotube film to form a carbon nanotube wire having uniform diameter.

7. The method of claim 1 , further comprising patterning the two carbon nanotube arrays by irradiating the two carbon nanotube arrays with a laser beam.

8. The method of claim 1 , wherein the pulling out the first carbon nanotube film preform is performed at a uniform speed.

9. The method of claim 1 , wherein the two carbon nanotube arrays are located in a same plane.

10. A carbon nanotube structure preform, comprising:
a plurality of patterned carbon nanotube arrays spaced from each other and arranged along a X direction, N≧2; each of the plurality of patterned carbon nanotube arrays comprises a plurality of carbon nanotubes substantially parallel to each other; the plurality of carbon nanotubes form a parallelogram comprising two first sides parallel to each other and two second sides parallel to the X direction, the two first sides of adjacent patterned carbon nanotube arrays are parallel to each other; the parallelogram comprises an acute angle and an obtuse angle, and the acute angle of the parallelogram is adjacent to the obtuse angle of adjacent parallelogram; and
a plurality of carbon nanotube film preforms located between two adjacent patterned carbon nanotube arrays, each of the plurality of carbon nanotube film preforms directly pulled out from each of the plurality of patterned carbon nanotube arrays comprises a first end point and a second end point opposite to the first end point; the first end point of the each of the plurality of carbon nanotube film preforms is connected to an obtuse angle vertex in each of the plurality of patterned carbon nanotube arrays, and the second end point in the each of the plurality of carbon nanotube film preforms is connected to an acute angle vertex in each of the plurality of patterned carbon nanotube arrays.

11. The carbon nanotube structure preform of claim 10 , wherein each of the plurality of patterned carbon nanotube arrays further comprises a substrate, and the plurality of carbon nanotubes is substantially perpendicular to a surface of the substrate.

12. The carbon nanotube structure preform of claim 10 , wherein the plurality of carbon nanotube film preforms is suspended.

13. The carbon nanotube structure preform of claim 10 , wherein an angle between a diagonal line of the parallelogram and the X direction is about 45 degrees.

14. The carbon nanotube structure preform of claim 10 , wherein the plurality of carbon nanotube film preforms comprises the plurality of carbon nanotubes joined end to end by van der Waals attractive force and extending along the X direction.

15. The carbon nanotube structure preform of claim 10 , wherein the plurality of patterned carbon nanotube arrays has the same structure and size.

16. A method for making carbon nanotube film, comprising the following steps:
providing a carbon nanotube structure preform, comprising:
a plurality of patterned carbon nanotube arrays spaced from each other and arranged along a X direction, N≧2; each of the plurality of patterned carbon nanotube arrays comprises a plurality of carbon nanotubes substantially parallel to each other; the plurality of carbon nanotubes form a parallelogram comprising two first sides parallel to each other and two second sides parallel to the X direction, the two first sides of adjacent patterned carbon nanotube arrays are parallel to each other; the parallelogram comprises a parallelogram acute angle and a parallelogram obtuse angle, and the parallelogram acute angle in the parallelogram is adjacent to the parallelogram obtuse angle in adjacent parallelogram; and
a plurality of carbon nanotube film preforms located between two adjacent patterned carbon nanotube arrays, each of the plurality of carbon nanotube film preforms directly pulled out from each of the plurality of patterned carbon nanotube arrays comprises a first end point and a second end point opposite to the first end point; the first end point of the each of the plurality of carbon nanotube film preforms is connected to an obtuse angle vertex in each of the plurality of patterned carbon nanotube arrays, and the second end point of the each of the plurality of carbon nanotube film preforms is connected to an acute angle vertex in each of the plurality of patterned carbon nanotube arrays; and

pulling out a carbon nanotube film from the carbon nanotube structure preform along a pulling direction, and the pulling direction is always parallel to the X direction.

17. The method of claim 16 , wherein each of the plurality of patterned carbon nanotube arrays further comprises a substrate, and the plurality of carbon nanotubes is substantially perpendicular to a surface of the substrate.

18. The method of claim 16 , wherein the plurality of carbon nanotube film preforms comprises the plurality of carbon nanotubes joined end to end by van der Waals attractive force and extending along the X direction.

19. The method of claim 16 , wherein the plurality of carbon nanotube film preforms is suspended.

20. The method of claim 16 , wherein some carbon nanotubes of the acute angle vertex are drawn out, other carbon

Assignees

• Univ Tsinghua
• Hon Hai Prec Ind Co Ltd

Inventors

• Jiang Kai-Li
• Liu Peng
• Fan Shou-Shan

Classifications

• C01B31/0253 Primary

  Chemistry & Metallurgy · mapped topic

• Y10T428/24893

  including particulate material · CPC title

• C01B32/168 Primary

  After-treatment · CPC title