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Method for preparing conductive composite material by utilizing synergistic reaction of conductive filling material

A conductive composite material and synergistic technology, applied in the direction of conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problems of complex operation steps, large cost, and inapplicability to large-scale industrial production

Inactive Publication Date: 2008-08-13
TSINGHUA UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can reduce the amount of conductive filler used to a certain extent, they all have disadvantages and certain limitations such as complicated operation steps, consuming a large amount of solvent, and being unsuitable for large-scale industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: 29.97g (97.9%, namely percentage by weight, the same below) polypropylene (Beijing Yanhua Petrochemical Co., Ltd., S1003), 0.03g (0.1%) multi-walled carbon nanotubes (Green Reaction Engineering of Tsinghua University provided by the laboratory), 0.6g (2%) carbon black (conductive carbon black) were added into a torque rheometer (Harbin Hapu Electric Technology Co., Ltd., RH-200A) for mixing. The kneading temperature is 200° C., and the screw speed is 60 r / pm. The mixing time was 10 minutes. The obtained sample was hot-pressed at 230°C to form a film, and the resistivity of the sample was measured and the logarithm value of the resistivity was calculated. The values ​​are shown in Table 1.

Embodiment 2

[0022] The amount of polypropylene in Example 1 was changed to 29.1 g (97%), the amount of multi-walled carbon nanotubes was changed to 0.3 g (1%), and other components remained unchanged. The preparation method and test method are the same as in Example 1, and the values ​​are shown in Table 1.

Embodiment 3

[0024] The carbon black in Example 1 was changed to 0.6g (2%) carbon black (graphite carbon black), and other components remained unchanged. The preparation method and test method are the same as in Example 1, and the values ​​are shown in Table 1.

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Abstract

A preparation of electric conductive composite by synergism of conductive filler, particularly relates to a preparation of electric conductive composite by synergism between carbon nano-tube and conductive carbon filler. The preparation is characterized by using processing apparatus for high-molecular material to melt mix and granulate after mixing polymer, carbon nano-tube, carbon black, black lead, carbon fiber according to a definite ratio. The preparation is simple to operate, easy for application in industry, can further produce electric conductive composite with great electric conductivity and combination property, which can be widely used in automobile, electric and electronic apparatus, office equipment, industrial mechanism, and can satisfy and expand need of high-molecular materials in various application fields.

Description

technical field [0001] The invention relates to a method for preparing a conductive composite material, in particular to a method for preparing a conductive composite material by utilizing the synergy between carbon nanotubes and conductive carbon fillers, and belongs to the technical field of polymer material preparation. Background technique [0002] With the development of the electronic industry and information technology, the requirements for the performance of polymer materials are getting higher and higher. In addition to the properties of the polymer material itself, in some cases the material is also required to have certain electrical properties to meet the needs of conductive materials, antistatic materials, electromagnetic shielding materials, and planar heating materials. So far, people usually use carbon materials such as carbon black, graphite, carbon fiber, and carbon nanotubes as conductive fillers to prepare various conductive composite materials. The use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08L33/20C08L67/00C08L59/02C08L69/00C08L27/00C08L71/00C08L81/00C08L77/00C08K3/04H01B1/24
Inventor 于建鲍哈达郭朝霞
Owner TSINGHUA UNIV
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