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An electrically conductive composite material and a preparation method thereof

A technology of conductive composite materials and conductive substrates, which is applied in the direction of cable/conductor manufacturing, circuits, electrical components, etc., and can solve the problems of low conductivity or insulative substrates that are difficult to disperse evenly, and the conductivity of conductive composite materials is uneven.

Inactive Publication Date: 2018-12-11
BEIJING DREAM INK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The inventors found that since the above-mentioned silver powder, copper powder and other conductive media are all solid, it is difficult to disperse evenly in the above-mentioned low-conductivity or insulating substrate, which will easily lead to uneven conductivity of the conductive composite material.

Method used

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  • An electrically conductive composite material and a preparation method thereof
  • An electrically conductive composite material and a preparation method thereof
  • An electrically conductive composite material and a preparation method thereof

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preparation example Construction

[0046] In addition, an embodiment of the present invention provides a method for preparing a conductive composite material, which is used to prepare the conductive composite material described in any one of the above, specifically, as figure 1 as shown, figure 1 The flow chart of the preparation method of the conductive composite material provided by the embodiment of the present invention, the preparation method of the conductive composite material includes:

[0047] Step S1, heating the low-melting-point metal whose melting point is lower than 300°C to above its melting point, until the low-melting-point metal is completely melted to form a uniform liquid;

[0048] Step S2, cooling the melted low-melting-point metal to room temperature and directly using it as a conductive substrate, or performing oxidation treatment on the low-melting-point metal cooled to room temperature to obtain a mixture of low-melting-point metal and its oxide as a conductive substrate ;

[0049] Op...

Embodiment 1

[0059] The raw materials for the preparation of the conductive composite material are shown in the following table. The ball milling method is adopted in the step S3 of the preparation method, specifically, a planetary ball mill is used:

[0060]

[0061] Conductivity of conductive composite material: 4800S / m

Embodiment 2

[0063] The raw materials for the preparation of the conductive composite material are shown in the following table. The ball milling method is adopted in the step S4 of the preparation method, specifically, a planetary ball mill is used:

[0064]

[0065] Conductivity of conductive composite material: 4400S / m

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Abstract

The invention provides an electrically conductive composite material, which relates to the technical field of composite materials. The electrically conductive composite material provided by the invention is composed of in percentage by weight, 30 to 80 percents of conductive substrate, 20 to 40 percents of conductivity adjusting powder, 0 to 5 percents of surfactant, 0 to 5 percents of modifier, 0to 10 percents of binder and 0 to 5 percents of solvent, wherein that conductive substrate is a low-melting metal with a melting point lower than 300 DEG C, or the conductive substrate is a mixture of a low-melting metal with a melting point lower than 300 DEG C and an oxide thereof. The technical proposal of the invention can uniformize the conductivity of the electrically conductive composite material.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a conductive composite material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of electronic information technology, the market has increasingly stringent requirements on the specificity and functionality of conductive materials. Conductive materials have gradually developed from single materials such as metals to conductive composite materials. [0003] In the prior art, conductive composite materials mostly use conductive media and low-conductivity or insulating substrates through blending, adsorption or coating to obtain composite conductive materials with different conductivity. Common conductive media are silver powder, copper powder, etc., and common low-conductivity or insulating substrates are polymer materials such as epoxy resin and acrylic acid. [0004] The inventors found that since the above-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/02H01B1/06H01B1/12H01B13/00
CPCH01B1/02H01B1/06H01B1/128H01B13/00
Inventor 郑翰白安洋董仕晋于洋曹宇
Owner BEIJING DREAM INK TECH CO LTD
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