Anti-fatigue conductive composite material and preparation method thereof

A conductive composite material, fatigue-resistant technology, used in conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, nanotechnology for materials and surface science, etc. , The mechanical properties of composite materials are decreased, easy to stick and agglomerate, etc., to achieve the effect of high fatigue resistance, good electrical stability, and improved electrical conductivity.

Active Publication Date: 2018-11-02
ZHUHAI ADVANPRO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nanomaterials have high surface energy and large specific surface area, and are very easy to stick and agglomerate in the process of preparing composite materials. When the amount of addition exceeds 5 parts, the agglomeration is more serious
However, if micron-level carbon fibers are used as conductive fillers, in order to achieve higher electrical conductivity, the addition amount is relatively large (generally not less than 15 parts), which will cause a significant decline in the mechanical properties of the composite material.
In addition, during the long-term use of the material, tiny silver streaks or cracks are prone to appear inside the rubber composite

Method used

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  • Anti-fatigue conductive composite material and preparation method thereof
  • Anti-fatigue conductive composite material and preparation method thereof
  • Anti-fatigue conductive composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of the fatigue-resistant conductive composite material of the present embodiment is as follows:

[0036] (1) Carry out acid oxidation treatment on the carbon nanofibers and carbon microfibers respectively, the acid oxidation treatment process is as follows: disperse the carbon nanofibers or carbon microfibers in an oxidizing acid solution. The mass ratio of concentrated nitric acid and concentrated sulfuric acid in the acid solution is 1:1, and the mass ratio of nano-carbon fiber or micron carbon fiber to the acid solution is 1:10. Magnetic stirring is performed at 60°C for 3 hours, and the acid-oxidized carbon fiber is repeatedly mixed with deionized water. Wash until the pH is 6 to 7, and dry at 120° C. for 3 hours to obtain nano-carbon fibers or micro-carbon fibers after acid oxidation treatment.

[0037] (2) Weighing raw materials, wherein the mass parts of silicone rubber, multi-walled carbon nanotubes, nano-carbon fibers and micro-carbon fib...

Embodiment 2

[0042] The preparation method of the fatigue-resistant conductive composite material of the present embodiment is as follows:

[0043] (1) Carry out acid oxidation treatment on the carbon nanofibers and carbon microfibers respectively, the acid oxidation treatment process is as follows: disperse the carbon nanofibers or carbon microfibers in an oxidizing acid solution. The mass ratio of concentrated nitric acid to concentrated sulfuric acid in the acid solution is 1:1, and the mass ratio of nano-carbon fiber or micron carbon fiber to the acid solution is 1:10. Magnetic stirring at 60°C for 3 hours, the carbon fiber after acid oxidation treatment is repeatedly mixed with deionized water. Wash until the pH is 6 to 7, and dry at 120° C. for 3 hours to obtain acid-treated nano-carbon fibers or micro-carbon fibers.

[0044] (2) Weighing raw materials, wherein the mass parts of silicone rubber, multi-walled carbon nanotubes, nano-carbon fibers and micro-carbon fibers are 100 parts, ...

Embodiment 3

[0049] The fatigue-resistant conductive composite material of this embodiment is prepared through the following steps:

[0050] (1) Carry out acid oxidation treatment on the carbon nanofibers and carbon microfibers respectively, the acid oxidation treatment process is as follows: disperse the carbon nanofibers or carbon microfibers in an oxidizing acid solution. The mass ratio of concentrated nitric acid to concentrated sulfuric acid in the acid solution is 1:1, and the mass ratio of nano-carbon fiber or micron carbon fiber to the acid solution is 1:10. Magnetic stirring at 60°C for 3 hours, the carbon fiber after acid oxidation treatment is repeatedly mixed with deionized water. Wash until the pH is 6 to 7, and dry at 120° C. for 3 hours to obtain acid-treated nano-carbon fibers or micro-carbon fibers.

[0051] (2) Weighing raw materials, wherein the mass parts of silicone rubber, multi-walled carbon nanotubes, nano-carbon fibers and micro-carbon fibers are 100 parts, 1 part,...

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Abstract

The invention relates to an anti-fatigue conductive composite material and a preparation method thereof. The composite material comprises silicone rubber and vulcanizing agent, and further comprises,by 100 mass parts of the silicone rubber, 2-6 mass parts of carbon nano tube, 2-8 mass parts of carbon nanofibers and 5-15 mass parts of micron carbon fibers; the carbon nanofibers and the micron carbon fibers are obtained through acid oxidation treatment; diameter of the carbon nanofibers is at nanoscale; and diameter of the micron carbon fibers is at micron order and length of the micron carbonfibers is at millimeter level. The preparation method comprises steps of acid oxidation treatment, mixing and vulcanizing. The anti-fatigue conductive composite material provided by the invention hasexcellent anti-fatigue performance and conductive stability, and is suitable for wearable type electronic products, such as smart shoes.

Description

technical field [0001] The invention relates to the technical field of rubber conductive composite materials and preparation methods thereof, in particular to a fatigue-resistant conductive silicone rubber composite material and a preparation method thereof. Background technique [0002] Dispersing various conductive fillers in insulating silicone rubber to prepare conductive silicone rubber is one of the most commonly used methods for preparing conductive silicone rubber. The conductive silicone rubber prepared by this method has the advantages of stable resistance time characteristic, controllable temperature coefficient of resistance and high service temperature. It has been widely used in antistatic materials, electromagnetic shielding materials, positive / negative temperature coefficient materials, sensors, and wearable products. The conductive filler of conductive silicone rubber has a crucial influence on its conductivity. The commonly used conductive fillers are meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/24H01B13/00B82Y30/00
CPCB82Y30/00H01B1/24H01B13/00
Inventor 王杨勇夏永峰李珂
Owner ZHUHAI ADVANPRO TECH
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