# US 10,696,032 B2 · Bonding method using a carbon nanotube structure

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- Number: US 10,696,032 B2
- Document ID: US10696032B2
- Status: Granted
- Kind: B2
- Application number: 16/119,700
- Filed: 2018-08-31
- Published: 2019-07-04
- Granted: 2020-06-30
- Earliest claimed: 2017-12-28
- Assignees: Tsinghua University; Hon Hai Precision Industry Co., Ltd.
- Applicants: Tsinghua University; Hon Hai Precision Industry Co., Ltd.
- Inventors: Xiang Jin; Zi-Peng Wu; Wen-Tao Miao; Kai-Li Jiang; Shou-Shan Fan
- Web page: https://patentgrep.com/patent/US10696032B2

## CPC

- B32B 37/12: characterised by using adhesives
- B32B 5/16: characterised by features of a layer formed of particles, e.g. chips, powder {or granules (layer formed of natural mineral particles B32B19/00; layer being formed of wood fibres, chips or particles B32B21/02)}
- B32B 9/007: {comprising carbon, e.g. graphite, composite carbon}
- B32B 9/04: comprising such {particular} substance as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a glass layer B32B17/06; layered products with at least two ceramic layers composed mainly of ceramic B32B18/00)}
- B32B 9/045: {of synthetic resin}
- B32B 27/36: comprising polyesters
- C08J 5/12: Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
- C09J 5/00: Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J 7/38: Pressure-sensitive adhesives [PSA]
- B29C 65/02: by heating, with or without pressure
- B29C 65/50: using adhesive tape {, e.g. thermoplastic tape; using threads or the like (B29C65/3444 takes precedence)}
- B29C 65/5007: {characterised by the structure of said adhesive tape, threads or the like}
- B29C 65/5028: {being textile in woven or non-woven form}
- B29C 65/76: Making non-permanent or releasable joints
- B29C 66/0344: {Annealing}
- B29C 66/303: {the joint involving an anchoring effect (B29C66/341, B29C65/56 and subgroups take precedence)}
- B29C 66/344: {Stretching or tensioning the joint area during joining}
- B29C 66/721: {Fibre-reinforced materials (B29C66/729 takes precedence)}
- B29C 66/73711: {oriented}
- B29C 66/73712: {mono-axially}
- B32B 7/035: using arrangements of stretched films, e.g. of mono-axially stretched films arranged alternately
- B32B 2250/05: 5 or more layers
- B32B 2264/10: Inorganic particles
- B32B 2307/308: Heat stability
- B32B 2307/514: Oriented
- B32B 2307/538: Roughness
- B32B 2405/00: Adhesive articles, e.g. adhesive tapes
- B32B 2457/14: Semiconductor wafers
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- B82Y 40/00: Manufacture or treatment of nanostructures
- C08J 2467/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08J2467/06 takes precedence)
- C09J 2400/10: Presence of inorganic materials
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES

## Abstract

A bonding method utilizing carbon nanotubes provides first and second objects to be bonded and a carbon nanotube structure. The carbon nanotube structure comprises a super-aligned carbon nanotube film comprising carbon nanotubes, the carbon nanotubes extending substantially along a same direction. The carbon nanotube structure is laid on surface of first object and surface of second object is pressed onto the carbon nanotube structure. Pressure being applied to the first object and the second object bonds the two together.

## Claims

### Claim 1

A bonding method comprising:
providing a first object comprising a first surface and a second object comprising a second surface, wherein both the first surface and the second surface have a surface roughness less than or equal to 1.0 micrometer;
laying a carbon nanotube structure on and in direct contact with the first surface, wherein the carbon nanotube structure comprises a super-aligned carbon nanotube film, the super-aligned carbon nanotube film comprises a plurality of carbon nanotubes, the plurality of carbon nanotubes extends substantially along a same direction, and an extending direction of the plurality of carbon nanotubes is substantially parallel to a surface of the super-aligned carbon nanotube film, the first surface and the second surface;
laying the second object on and in direct contact with the carbon nanotube structure, wherein the carbon nanotube structure is located between the first object and the second object; and
applying a pressure to the first object and the second object, to bond the first object to the second object, wherein a three-layer structure is formed by the first object, the carbon nanotube structure and the second object.

### Claim 2 (depends on 1)

The bonding method of claim 1, wherein the laying the carbon nanotube structure on and in direct contact with the first surface comprises:
providing a super-aligned carbon nanotube array;
drawing the super-aligned carbon nanotube film from the super-aligned carbon nanotube array; and
directly laying the super-aligned carbon nanotube film on the first surface.

### Claim 3 (depends on 2)

The bonding method of claim 2, wherein the laying the carbon nanotube structure on and in direct contact with the first surface further comprises:
stretching the super-aligned carbon nanotube film along the extend direction of the plurality of carbon nanotubes of the super-aligned carbon nanotube film after drawing the super-aligned carbon nanotube film from the super-aligned carbon nanotube array and before directly laying the super-aligned carbon nanotube film on the first surface.

### Claim 4 (depends on 3)

The bonding method of claim 3, wherein a stretch length of stretching the super-aligned carbon nanotube film along the extend direction of the plurality of carbon nanotubes of the super-aligned carbon nanotube film is from about 1 millimeter to about 3 millimeters.

### Claim 5 (depends on 1)

The bonding method of claim 1, wherein the laying the carbon nanotube structure on and in direct contact with the first surface comprises:
drawing at least one super-aligned carbon nanotube film from a super-aligned carbon nanotube array;
laying the at least one super-aligned carbon nanotube film on a support structure, to form the carbon nanotube structure; and
transferring the carbon nanotube structure from the support structure to the first surface.

### Claim 6 (depends on 5)

The bonding method of claim 5, wherein the support structure is a frame structure, the carbon nanotube structure is partially suspended to form a suspended portion; and the transferring the carbon nanotube structure from the support structure to the first surface comprises directly placing the suspended portion on the first surface; and then removing the frame structure.

### Claim 7 (depends on 1)

The bonding method of claim 1, further comprising cooling the three-layer structure to about −196° C.˜−100° C.

### Claim 8 (depends on 1)

The bonding method of claim 1, further comprising heating the three-layer structure to about 800° C.˜1000° C.

### Claim 9 (depends on 1)

The bonding method of claim 1, wherein the bonding method is performed at a temperature from about −196° C. to about 1000° C.

### Claim 10 (depends on 9)

The bonding method of claim 9, wherein the bonding method is performed at the temperature from about −196° C. to about −100° C.

### Claim 11 (depends on 9)

The bonding method of claim 9, wherein the bonding method is performed at the temperature from about 800° C. to about 1000° C.

### Claim 12 (depends on 1)

The bonding method of claim 1, wherein the surface roughness of the first surface and the second surface are both less than or equal to 100 nanometers.

### Claim 13 (depends on 1)

The bonding method of claim 1, wherein the plurality of carbon nanotubes are pure carbon nanotubes.

### Claim 14 (depends on 1)

The bonding method of claim 1, wherein the carbon nanotube structure comprises 10˜15 layers of the super-aligned carbon nanotube films overlapped and paralleled with each other.

### Claim 15

A bonding method comprising:
providing a first object comprising a first surface and a second object comprising a second surface, wherein both the first surface and the second surface have a surface roughness less than or equal to 1.0 micrometer;
sandwiching a carbon nanotube structure between the first object and the second object, and in direct contact with the first surface and the second surface, wherein the carbon nanotube structure consists of a super-aligned carbon nanotube film, the super-aligned carbon nanotube film consists of a plurality of carbon nanotubes, the plurality of carbon nanotubes extends substantially along a same direction, and an extending direction of the plurality of carbon nanotubes is substantially parallel to a surface of the super-aligned carbon nanotube film, the first surface and the second surface; and
applying a pressure to the first object and the second object, to bond the first object to the second object, wherein a three-layer structure is formed by the first object, the carbon nanotube structure and the second object.

### Claim 16 (depends on 15)

The bonding method of claim 15, wherein the three-layer structure is free of organic solvent.

### Claim 17 (depends on 15)

The bonding method of claim 15, further comprising cooling the three-layer structure to about −196° C.˜−100° C.

### Claim 18 (depends on 15)

The bonding method of claim 15, further comprising heating the three-layer structure to about 800° C.˜1000° C.

### Claim 19 (depends on 15)

The bonding method of claim 15, wherein the bonding method is performed at a temperature from about −196° C. to about −100° C.

### Claim 20 (depends on 15)

The bonding method of claim 15, wherein the bonding method is performed at a temperature from about 800° C. to about 1000° C.