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Composite conductive agent, preparation method thereof and conductive plastic

A composite conductive agent and conductive plastic technology, applied in the field of conductive polymer materials, can solve problems such as uneven dispersion, easy agglomeration, and unsatisfactory electrical conductivity

Inactive Publication Date: 2021-05-28
SHENZHEN XIWAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide a composite conductive agent and its preparation, so as to solve the technical problem of uneven dispersion caused by the existing conductive agent, which is prone to agglomeration and other undesirable phenomena.
[0009] Another object of the present invention is to provide a conductive plastic masterbatch and conductive plastic to solve the technical problem that the conductive agent contained in the existing conductive plastic is unevenly dispersed, resulting in unsatisfactory conductive performance

Method used

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  • Composite conductive agent, preparation method thereof and conductive plastic
  • Composite conductive agent, preparation method thereof and conductive plastic
  • Composite conductive agent, preparation method thereof and conductive plastic

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preparation example Construction

[0039] Correspondingly, based on the above composite conductive agent, the embodiment of the present invention also provides a preparation method of the composite conductive agent. The preparation method technological process of composite conductive agent is as figure 2 shown, combined with figure 1 , including the following steps:

[0040] Step S01: performing a first surface modification treatment on the one-dimensional conductive material 2 to obtain a modified one-dimensional conductive material;

[0041] Step S02: performing a second surface modification treatment on the two-dimensional conductive material 1 to obtain a modified two-dimensional conductive material;

[0042] Step S03: After mixing the modified one-dimensional conductive material and the modified two-dimensional conductive material with a solvent to form a mixture suspension, the solvent is removed and dried to obtain a composite conductive agent.

[0043] Wherein, the first surface modification treatme...

Embodiment A1

[0082] This embodiment provides a composite conductive agent and a preparation method thereof. The composite conductive agent of this embodiment includes graphite and carbon nanotubes distributed and combined on the graphite surface, the carbon nanotubes form carbon nanotubes on the graphite surface, and extend abundant carbon nanotube adhesion fine whiskers, its structure is as follows figure 1 shown. Wherein, the mass ratio of carbon nanotubes to graphite is 1:5.

[0083] The preparation method of composite conductive agent comprises the steps:

[0084] S1: Pour the mixed solution of 1g of multi-walled carbon nanotubes and 200ml of nitric acid and sulfuric acid into a 1:3 mixed acid into a 1000ml beaker for ultrasonic treatment, ultrasonically oscillate at a frequency of 50kHz for 30 minutes, and then wash with deionized water , removing the acid on the surface of the carbon nanotubes until the pH of the washed aqueous solution is 7, and drying it at 80° C. for 24 hours. ...

Embodiment A2

[0088] This embodiment provides a composite conductive agent and a preparation method thereof. The composite conductive agent in this embodiment includes graphite and chopped carbon fiber.

[0089] The preparation method of composite conductive agent comprises the steps:

[0090] S1: Take 1g of chopped carbon fiber and 200ml of nitric acid and sulfuric acid in a 1:3 mixed acid solution and pour it into a 1000ml beaker for ultrasonic treatment. After ultrasonic oscillation at a frequency of 50kHz for 30 minutes, wash with deionized water to remove The acid on the surface of the carbon fiber is chopped until the pH of the washed aqueous solution is 7, and it is baked at 80° C. for 24 hours. Then weigh cetyltrimethylammonium bromide (CTAB) of 20 times the mass of chopped carbon fiber and add it to the pretreated chopped carbon fiber and 300ml of deionized water, and ultrasonically treat it for 5 minutes to prepare positively charged short carbon fiber. cut carbon fiber;

[009...

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Abstract

The invention discloses a composite conductive agent, a preparation method thereof, conductive plastic master batch and conductive plastic. The composite conductive agent comprises a core body and a shell layer distributed and combined on the surface of the core body, the core body comprises a two-dimensional conductive material, and the shell layer comprises a one-dimensional conductive material. The conductive plastic master batch and the conductive plastic comprise the composite conductive agent. The one-dimensional conductive material and the two-dimensional conductive material contained in the composite conductive agent can be uniformly dispersed, the two-dimensional conductive material and the one-dimensional conductive material form a core-shell structure, the two-dimensional conductive material and the one-dimensional conductive material play a synergistic role, and the composite conductive agent is endowed with high conductivity. According to the preparation method of the composite conductive agent, the process conditions are easy to control, so that the prepared composite conductive agent keeps stable in structural characteristics such as morphology and conductivity, and the efficiency is high. The conductive plastic master batch and the conductive plastic are high in conductivity, and the related mechanical properties are stable in structure.

Description

technical field [0001] The application belongs to the technical field of conductive polymer materials, and in particular relates to a composite conductive agent, a preparation method thereof, and a conductive plastic. Background technique [0002] Conductive plastics are functional polymer materials that are processed by mixing resin and conductive substances and processing them in the same way as plastics. Commonly used conductive substances mainly include carbon materials and metal materials. Although commonly used carbon materials and metal materials have good electrical conductivity. However, there are also certain deficiencies in each, such as good electrical conductivity of metal materials. When the particles are too large, during the processing and molding process, due to the mechanical movement of plastic molding equipment, the metal materials will be seriously damaged, so the molding processing equipment and technical requirements are strict. ; When the particles ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K3/04C08K7/06C08L81/02C08L83/04
CPCC08K9/10C08K3/041C08K3/04C08K7/06C08L81/02C08K2201/001C08K2201/011
Inventor 章驰天韩斌斌
Owner SHENZHEN XIWAN TECH CO LTD
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