Water-based conducting polymer/metal composite nano-coating for porous wall board and preparation method thereof

A conductive polymer, metal nanotechnology, applied in conductive coatings, coatings, etc., can solve the problems of limiting the popularization and application of shielding coatings, poor electromagnetic shielding effect, and difficult to meet the requirements of electrical conductivity, and achieves less oxidation and improved stability. , the effect of reducing the areal density

Inactive Publication Date: 2012-05-30
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon black and graphite are used as conductive coatings, which have poor conductivity and poor electromagnetic shielding effect
The conductivity of other oxide-based conductive fillers is difficult to meet the requirements
In addition, the electromagnetic shielding coatings currently developed are difficult to adjust the shielding effectiveness, high surface density, low adhesion and other problems, which limit the popularization and application of shielding coatings
In addition, the solvents used are mainly organic solvents, which are easy to cause environmental pollution.

Method used

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  • Water-based conducting polymer/metal composite nano-coating for porous wall board and preparation method thereof
  • Water-based conducting polymer/metal composite nano-coating for porous wall board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 Preparation of water-based conductive polymer / metal composite nano-coating for porous wallboard

[0034] 1) adding 0.3% sodium dodecylbenzenesulfonate surfactant into water, then adding nano-nickel particles for ultrasonic mixing for 2 hours, filtering, separating, washing, and drying to obtain modified nano-nickel particles; The amount of nano-nickel particles added is 100g / L water;

[0035] 2) Add the modified nano-nickel particles obtained in step 1) into water, and ultrasonically disperse them until uniform. The amount of the modified nano-nickel particles is 10 millimoles per liter of water.

[0036] 3) add macromolecular monomer aniline and organic acid dodecylbenzenesulfonic acid, ultrasonically mix uniformly, form mixed emulsion, the add-on of monomer is 100 millimoles of every liter of mixed solution; The add-on of organic acid and monomer The molar ratio is 1:1;

[0037] 4) dissolving the oxidant ammonium persulfate in water to form a solution, the...

Embodiment 2

[0043] Example 2 Preparation of water-based conductive polymer / metal composite nano-coating for porous wallboard

[0044] 1) adding 0.5% sodium dodecylsulfonate surfactant into water, then adding metal silver nanoparticles and ultrasonically mixing for 2 hours, filtering, separating, washing, and drying to obtain modified metal nanoparticles; The amount of metal nanoparticles added is 100g / L water;

[0045] 2) Add the modified metal nanoparticles obtained in step 1) into water, and ultrasonically disperse them until they are uniform. The amount of modified metal nanoparticles added is 100 millimoles per liter of water.

[0046] 3) adding polymer monomer pyrrole and oleic acid, ultrasonically mixing to form a mixed emulsion, the amount of monomer added is 500 millimoles per liter of mixed solution; the molar ratio of the amount of organic acid added to the monomer is 1:1;

[0047] 4) dissolving the oxidizing agent ferric chloride into water to form a solution, the amount of th...

Embodiment 3

[0053] Example 3 Preparation of water-based conductive polymer / metal composite nano-coating for porous wallboard

[0054] 1) adding 0.2% surfactant sodium lauryl sulfate into water, adding metal nano-copper particles and ultrasonically mixing for 2 hours, filtering, separating, washing, and drying to obtain modified metal nano-copper particles; The amount of metal nanoparticles added is 100g / L water;

[0055] 2) Add the modified metal nanoparticles obtained in step 1) into water, and ultrasonically disperse until uniform, and the amount of the modified metal nanoparticles added is 50 millimoles per liter of water;

[0056] 3) Add polymer monomer thiophene and organic acid azobenzenesulfonic acid, and ultrasonically mix uniformly to form a mixed emulsion. The amount of monomer added is 500 millimoles per liter of mixed solution, and the molar ratio of the amount of organic acid added to the monomer 1:1;

[0057] 4) dissolving oxidizing agent potassium perbromate and forming a...

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Abstract

The invention relates to the field of functional materials, in particular to a water-based conducting polymer / metal composite nano-coating for a porous wall board and a preparation method thereof. In the invention, the water-based conducting polymer / metal composite nano-coating for the porous wall board is a water-based disperse system of a conducting polymer / metal nano-core-shell structure, and the size of the conducting polymer / metal nano-core-shell structure is 20-300 nanometers, wherein the sizes of metal nano-particles of the core layer are 10-100 nanometers, the sizes of conducting polymers of the shell layer are 10-200 nanometers, and the molar ratio of the metal nano-particles to the conducting polymer monomers is 1:1-1:10. The water-based composite coating of the invention has nopollution and good stability and can be directly sprayed into holes of the porous wall board.

Description

technical field [0001] The invention relates to the field of functional materials, in particular to a water-based conductive polymer / metal composite nano-coating for porous wallboards and a preparation method thereof. Background technique [0002] With the rapid development of information technology, computer networks, information processing equipment, electronic communication equipment and various electrical equipment have been widely used in various industries as the carrier of information technology. In order to weaken the electromagnetic radiation of equipment and mutual interference, eliminate space pollution, prevent information leakage, and protect people's health, it is necessary to shield electromagnetic waves. The problem of electromagnetic shielding has become a very urgent problem in modern protection engineering. [0003] In recent years, many shielding technologies have been developed, such as metal fusion sputtering, metal foil, chemical plating, etc. Among th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D179/02C09D179/04C09D165/00C09D7/12C09D5/24C08G73/02C08G73/06C08G61/12
Inventor 朱英王亮丁春梅江雷
Owner BEIHANG UNIV
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