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Carbon nano-tube plastic electric-conduction composite material and wet preparation process thereof

A technology of conductive composite materials and carbon nanotubes, applied in the field of conductive composite materials, can solve problems such as difficult dispersion and high pollution, and achieve the effects of improving dispersion, good processing performance, and simple and stable process

Active Publication Date: 2019-11-19
SHANDONG DAZHAN NANO MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the phenomenon that carbon nanotubes are difficult to disperse during application and the technical problem of high pollution in existing modification methods, the invention provides a carbon nanotube plastic conductive composite material and its wet preparation process. The invention is innovative Surface modification of carbon nanotubes with bio-based amino acids that can produce π-π interactions with carbon nanotubes to improve the dispersion performance of carbon nanotubes, and then wet mixing of carbon nanotubes and plastic emulsions to obtain dispersion Uniform Carbon Nanotube Plastic Conductive Composites

Method used

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  • Carbon nano-tube plastic electric-conduction composite material and wet preparation process thereof
  • Carbon nano-tube plastic electric-conduction composite material and wet preparation process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] A PS special material, raw materials include plastic emulsion, amino acid aqueous solution, carbon nanotubes and conductive fillers,

[0042] The mass fraction of amino acids in the amino acid aqueous solution is 0.3%, the types of amino acids are phenylalanine and tryptophan, and the mass ratio of phenylalanine and tryptophan is 2:1,

[0043] Carbon nanotubes are iron-based multi-wall carbon nanotubes, with a diameter of 20-30nm and a specific surface area of ​​180-220m 2 / g,

[0044] Conductive fillers are carbon black and graphene, and graphene has a specific surface area of ​​1000-1200m 2 / g of thin-layer graphene prepared by redox method,

[0045] The mass ratio of amino acid: carbon nanotube: carbon black: graphene is 3:10:5:1,

[0046] The plastic emulsion is a PS emulsion with a solute mass fraction of 2.5%,

[0047] The demulsifier is 2% calcium chloride solution,

[0048] The auxiliary materials are 120g white oil, 30g PE wax, and 15g paraffin wax.

[0049...

Embodiment 2

[0057] A special material for ABS, the raw materials include plastic emulsion, amino acid aqueous solution, carbon nanotubes and conductive fillers,

[0058] The mass fraction of amino acids in the amino acid aqueous solution is 0.5%, the types of amino acids are tyrosine and tryptophan, and the mass ratio of tyrosine and tryptophan is 1:3.

[0059] Carbon nanotubes are nickel-based multi-wall carbon nanotubes, with a diameter of 40-60nm and a specific surface area of ​​80-120m 2 / g,

[0060] Conductive fillers are carbon black and graphene, and graphene has a specific surface area of ​​500-700m 2 / g of graphene oxide prepared by physical method,

[0061] The mass ratio of amino acid: carbon nanotube: carbon black: graphene is 5:20:4:3,

[0062] The plastic emulsion is an ABS emulsion with a solute mass fraction of 4%,

[0063] The demulsifier is 2.5% calcium chloride solution,

[0064] The auxiliary materials are 250g white oil, 50g PE wax, and 20g paraffin wax.

[0065...

Embodiment 3

[0073] A kind of EVA masterbatch, raw material comprises plastic emulsion, amino acid aqueous solution and carbon nanotube,

[0074] The mass fraction of amino acids in the amino acid aqueous solution is 0.45%, the types of amino acids are phenylalanine and valine, and the mass ratio of phenylalanine and valine is 3:4,

[0075] Carbon nanotubes are carbon nanotubes, which are cobalt-based multi-wall carbon nanotubes, with a diameter of 10-20nm and a specific surface area of ​​250-300m 2 / g,

[0076] The mass ratio of amino acid: carbon nanotube is 1:4,

[0077] The plastic emulsion is an EVA emulsion with a solute mass fraction of 1.25%.

[0078] The demulsifier is 1% calcium chloride solution,

[0079] The auxiliary materials are 80g white oil, 20g PE wax, and 10g paraffin wax.

[0080] The preparation process of the above-mentioned mixing composite material comprises the following steps:

[0081] S1: Prepare 30L of amino acid aqueous solution with a mass fraction of ami...

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Abstract

The invention relates to the technical field of electric-conduction composite materials, particularly to a carbon nano-tube plastic electric-conduction composite material and a wet preparation processthereof, wherein the raw materials comprise plastic emulsion, amino acids, carbon nano-tubes and an electric-conduction filler, and the amino acids can produce pi-pi action with the carbon nano-tubes. The process comprises: preparing an amino acid aqueous solution; adding carbon nano-tubes and an electric-conduction filler to the amino acid aqueous solution; adding the carbon nano-tube amino aciddispersion liquid to a plastic emulsion, and carrying out uniformly demulsification mixing; filtering, and drying; mixing with an auxiliary material; and mixing, extruding, and granulating. Accordingto the present invention, carbon nano-tubes are subjected to surface modification by using the biological amino acid capable of producing pi-pi action with the carbon nano-tubes to improve the dispersion performance of the carbon nano-tubes, and the carbon nano-tubes and the plastic emulsion are subjected to wet mixing so as to obtain the uniformly dispersed carbon nano-tube plastic electric-conduction composite material.

Description

technical field [0001] The invention relates to the technical field of conductive composite materials, in particular to a carbon nanotube plastic conductive composite material and a wet preparation process thereof. Background technique [0002] As a one-dimensional nanomaterial, carbon nanotubes have excellent physical and mechanical properties. They are mainly coaxial circular tubes with several to dozens of layers composed of carbon atoms arranged in a hexagonal shape. Carbon nanotubes have a very large aspect ratio, the diameter is usually between 1-100nm, and the length is several microns to hundreds of microns. Due to its large aspect ratio, carbon nanotubes perform very well in terms of mechanics, electricity, and electrical and thermal conductivity, so they have broad potential in many fields such as catalyst supports, rubber-plastic composite materials, electrochemical materials, and photoelectric sensors. Application prospect. [0003] Carbon nanotubes can be divi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L55/02C08L23/08C08L91/06C08L23/06C08K13/06C08K9/04C08K3/04B29B7/00
CPCC08L25/06C08L55/02C08L23/0853B29B7/002C08L2205/025C08L2205/035C08K2201/001C08K2201/006C08K2201/011C08L91/06C08L23/06C08K13/06C08K9/04C08K3/041C08K3/04C08K3/042
Inventor 鞠坤耿磊王莲莲李岩杜垚纪文雅
Owner SHANDONG DAZHAN NANO MATERIALS
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