High-performance carbon nanotube/metal composite conductive fiber and preparation method thereof

A technology of carbon nanotube fibers and carbon nanotubes, which is applied in the field of material science, can solve problems such as limited effect, damage, and poor thermal stability of interface structures, and achieve the effects of improving effective strength, improving transmission efficiency, and high interface bonding force

Inactive Publication Date: 2019-10-25
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Application Information

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Problems solved by technology

However, its effect is limited, and the thermal stability of the formed interface structure is extremely poor, and it will be destroyed after annealing treatment.

Method used

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  • High-performance carbon nanotube/metal composite conductive fiber and preparation method thereof
  • High-performance carbon nanotube/metal composite conductive fiber and preparation method thereof
  • High-performance carbon nanotube/metal composite conductive fiber and preparation method thereof

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preparation example Construction

[0063] Another aspect of the embodiments of the present invention provides a method for preparing a high-performance carbon nanotube / metal composite conductive fiber, which includes:

[0064] Using continuous electroplating, a buffer layer is plated on the carbon nanotube fibers,

[0065] Plating a metal coating on the buffer layer, controlling the thickness of the coating by changing the collection speed, the collection speed is 5-35r / min;

[0066] Annealing the obtained metal coating-buffer layer-carbon nanotube fiber composite structure, so that the buffer metal forming the buffer layer continuously diffuses into the carbon nanotube fiber and the metal coating;

[0067] Using self-heating treatment technology, the obtained composite conductive fiber is energized, and the temperature generated by the electrothermal effect is used to induce the orientation of the metal grains in the metal coating, so that the (111) crystal plane of the metal grains and the carbon nanotube car...

Embodiment 1

[0086] see figure 1 and Figure 2c , the method for preparing high-performance carbon nanotube / metal composite conductive fiber in the present embodiment comprises:

[0087] (1) Introduce a fast nickel plating step before the electroplating copper layer, and plate a uniform nano-scale nickel buffer layer on the surface of the carbon nanotube fiber, wherein the nickel plating parameters are: 10V constant voltage, current about 2mA, time 30s , the plating solution contains 120g / L nickel chloride (NiCl 2 ) and 200ml / L hydrochloric acid (HCl), the thickness of the resulting nickel buffer layer is 0.5 μm. Rapid nickel plating can introduce a large number of uniformly dispersed nano-nickel particles on the surface of carbon nanotube fibers, see Figure 3c As shown, these nickel particles will improve the subsequent copper plating process.

[0088] (2) Copper plating on the surface of the nickel buffer layer afterwards, wherein the copper plating parameters are: 5V pulse voltage,...

Embodiment 2

[0112] By changing the collection rate of the reel in Example 1 and keeping the electroplating formula and other electroplating parameters unchanged, composite conductive fibers with different thicknesses of coatings can be prepared. The relationship between collection speed and coating thickness can be found in Figure 19a As shown, and as the thickness of the coating changes, the density liquid of the obtained composite conductive fiber changes accordingly. For the specific relationship, see Figure 19b shown.

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Abstract

The invention discloses a high-performance carbon nanotube / metal composite conductive fiber and a preparation method thereof. The composite conductive fiber comprises carbon nanotube fibers, a metal plating layer covering the surface of the carbon nanotube fibers, and a buffer interface structure, wherein the buffer interface structure comprises a buffer metal; the buffer metal, the carbon nanotube fibers and the metal plating layer have good wettability, and the buffer metal can be continuously diffused into the carbon nanotube fibers and the metal plating layer; wherein metal crystal grainsare oriented in the metal plating layer, and the (111) crystal plane of the metal crystal grains is in contact with the carbon nanotube fibers, so that the carbon nanotube fibers have good matching with the metal crystal grains on an atomic scale. The composite conductive fiber prepared in the invention has strong interface bonding force, high tensile strength, strong bending resistance, high electrical conductivity, large current-carrying capacity, good current-carrying stability and excellent GHz high-frequency characteristics.

Description

technical field [0001] The invention relates to a preparation method of a high-performance carbon nanotube / metal composite conductive fiber, in particular to a method for improving the carbon nanotube / metal coating interface bonding force through interface design to improve the mechanical and electrical comprehensive performance of the carbon nanotube / copper composite conductive fiber The method belongs to the field of material science and technology. Background technique [0002] According to the structural characteristics of the prepared composite conductive fibers, the existing carbon nanotube / metal composite conductive fiber preparation methods can be divided into the following two categories: carbon nanotube fiber surface electroplating method and carbon nanotube / copper homogeneous mixed system electroplating Law. [0003] First, the carbon nanotube fiber surface electroplating method mainly includes the following types: [0004] (1) The sacrificial anode plating meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/83
CPCD06M11/83
Inventor 邹菁云刘丹丹张骁骅李清文
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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