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A kind of preparation method of high-performance composite graphene conductive coating

A technology of composite graphene and conductive coatings, which is applied in conductive coatings, graphene, coatings, etc., can solve the problems that the mechanical strength and electrical conductivity of coatings are difficult to improve at the same time, the performance needs to be improved, and the scope of application is limited. Improved performance, improved density, and low price

Active Publication Date: 2016-02-17
乐福之家纳米材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for these conductive coatings, it is difficult to improve the mechanical strength and electrical conductivity of the coating at the same time, and the density of the coating is relatively high, these problems greatly limit its application range
There are also people who use graphene to prepare conductive coatings, and then improve the conductivity and mechanical properties of spraying, but there are disadvantages that the cost is high and the performance needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of a high-performance composite graphene conductive coating, which comprises the following preparation steps

[0019] Step 1): Graphene oxide is obtained by preparing natural flake graphite under the action of potassium persulfate, phosphorus pentoxide, concentrated sulfuric acid, potassium permanganate and hydrogen peroxide; dispersing the prepared graphene oxide in an aqueous solution to obtain Solution I, the parts by weight of graphene is 110 parts;

[0020] The preparation method of described graphene is that natural flake graphite, potassium persulfate and phosphorus pentoxide are added in the concentrated sulfuric acid of 10ml / part according to the weight ratio of 1:1:1, ultrasonic 10min, stir at 80 degrees Celsius for 2 hour; then add a certain amount of potassium permanganate, and stir for 2 hours under ice bath conditions; then add 1000ml / part of deionized water at room temperature, and stir for 2 hours at room temperature; after stirring,...

Embodiment 2

[0026] A preparation method of a high-performance composite graphene conductive coating, which comprises the following preparation steps

[0027] Step 1): Graphene oxide is obtained by preparing natural flake graphite under the action of potassium persulfate, phosphorus pentoxide, concentrated sulfuric acid, potassium permanganate and hydrogen peroxide; dispersing the prepared graphene oxide in an aqueous solution to obtain Solution I, the parts by weight of graphene is 110 parts;

[0028] The preparation method of described graphene is that natural flake graphite, potassium persulfate and phosphorus pentoxide are added in the concentrated sulfuric acid of 10ml / part according to the weight ratio of 1:1:1, ultrasonic 10min, stir at 80 degrees Celsius for 2 hour; then add a certain amount of potassium permanganate, and stir for 2 hours under ice bath conditions; then add 1000ml / part of deionized water at room temperature, and stir for 2 hours at room temperature; after stirring,...

Embodiment 3

[0034] A preparation method of a high-performance composite graphene conductive coating, which comprises the following preparation steps

[0035] Step 1): Graphene oxide is obtained by preparing natural flake graphite under the action of potassium persulfate, phosphorus pentoxide, concentrated sulfuric acid, potassium permanganate and hydrogen peroxide; dispersing the prepared graphene oxide in an aqueous solution to obtain Solution I, the parts by weight of graphene is 115 parts;

[0036] The preparation method of described graphene is that natural flake graphite, potassium persulfate and phosphorus pentoxide are added in the concentrated sulfuric acid of 10ml / part according to the weight ratio of 1:1:1, ultrasonic 10min, stir at 80 degrees Celsius for 2 hour; then add a certain amount of potassium permanganate, and stir for 2 hours under ice bath conditions; then add 1000ml / part of deionized water at room temperature, and stir for 2 hours at room temperature; after stirring,...

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Abstract

The invention discloses a method for preparing a high performance compound graphene conductive coating. The method takes high performance graphene as the base component, and compounds inorganic coatings. Due to the combined action of various composite additives like a dispersing agent, a neutralizer, a flatting agent, a defoaming agent and a cross-linking agent, the prepared coating has excellent conductivity and can form an excellent conductive coating, can be applied to fields like electromagnetic shielding, anti-static electricity, corrosion prevention, heat dissipation, wear resistance, and electronic circuit, and has extensive application value.

Description

technical field [0001] The invention specifically relates to a preparation method of a high-performance graphene composite conductive paint, which belongs to the field of spraying materials. Background technique [0002] Conductive coating refers to a new type of functional coating that can be applied to non-conductive substrates by various spraying methods, so that it has the ability to conduct current and eliminate the accumulated static charge. The conductivity after coating is generally greater than 10S / m. It has been widely used in various fields. [0003] At present, conductive coatings can be divided into structural conductive coatings and additive conductive coatings according to the conductive mechanism and composition. Among them, the additive-type conductive coating is very popular because of its advantages of simple equipment, convenient operation, low cost, and can be applied to various complex-shaped surfaces. People have successively developed a variety of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/24C09D1/00C09D7/12C01B31/04C01B32/184
Inventor 赵建东王玮
Owner 乐福之家纳米材料有限责任公司