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A kind of transparent conductive coating and its preparation method and application

A transparent conductive and coating technology, used in conductive coatings, equipment for manufacturing conductive/semi-conductive layers, conductive layers on insulating carriers, etc., can solve problems such as opacity of coatings, achieve good light transmission, reduce Usage amount, effect of good electrical conductivity

Active Publication Date: 2022-04-08
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It avoids the problem that a large amount of carbon material needs to be added in the traditional preparation of conductive coatings, resulting in opaque coatings

Method used

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  • A kind of transparent conductive coating and its preparation method and application
  • A kind of transparent conductive coating and its preparation method and application
  • A kind of transparent conductive coating and its preparation method and application

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preparation example Construction

[0050] The present invention also provides a preparation method for the above-mentioned transparent conductive coating, comprising the following steps:

[0051] a The polyurethane solution doped with graphene, carbon nanotubes and lithium salt is evenly coated on the substrate, and then heated and cured at 60-90° C. for 3-5 hours to obtain the bottom layer;

[0052] b. Evenly coat the mixed solution of graphene and carbon nanotubes on the bottom layer to form a uniform liquid film, let it stand for 1-3 hours, and dry it at 70-90°C for 1-3 hours to obtain a conductive network layer;

[0053] c uniformly coating the polyurethane coating solution doped with graphene and carbon nanotubes on the conductive network layer to obtain a surface protection layer.

[0054] During specific implementation, in steps a and c, the described polyurethane solution that is doped with graphene, carbon nanotube and lithium salt is made through the following steps:

[0055] S1a Mix graphene and car...

Embodiment 1

[0075] This embodiment provides a method for preparing a transparent conductive coating, comprising the following steps:

[0076] a The polyurethane solution doped with graphene, carbon nanotubes and lithium salt is evenly coated on the substrate (organic glass (pmma) polymethyl methacrylate), and then heated and cured at 80 ° C for 4 hours to obtain the bottom layer, which The thickness is 100μm;

[0077] The polyurethane solution doped with graphene, carbon nanotubes and lithium salt is prepared through the following steps:

[0078] S1a mixes graphene and carbon nanotubes in a mass ratio of 1:10 to obtain a 2.25g mixture, which is then added to 40ml of concentrated H 2 SO 4 (Concentration is 98wt%) and 40ml concentrated HNO 3 (Concentration is 68wt%) in the mixed solution, ultrasonic dispersion 30min, then heating at 90 ℃, continuous stirring, reaction 60min; The product is washed to neutrality with distilled water several times, use filter paper to filter at room tempera...

Embodiment 2

[0098] This embodiment provides a method for preparing a transparent conductive coating, comprising the following steps:

[0099] a The polyurethane solution doped with graphene, carbon nanotubes and lithium salt is evenly coated on the substrate (organic glass (pmma) polymethyl methacrylate), and then heated and cured at 80 ° C for 4 hours to obtain the bottom layer, which The thickness is 80μm;

[0100] The polyurethane solution doped with graphene, carbon nanotubes and lithium salt is prepared through the following steps:

[0101] S1a mixes graphene and multi-walled carbon nanotubes in a mass ratio of 1:5 to obtain a 2.25g mixture, which is then added to 40ml of concentrated H 2 SO 4 (Concentration is 98wt%) and 40ml concentrated HNO 3 (Concentration is 68wt%) in the mixed solution, ultrasonic dispersion 30min, then heating at 90 ℃, continuous stirring, reaction 60min; The product is washed to neutrality with distilled water several times, use filter paper to filter at r...

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Abstract

The invention provides a transparent conductive coating and its preparation method and application. The transparent conductive coating includes a base material and at least one bottom layer, at least one conductive network layer and a surface layer sequentially stacked on the base material. The protective layer. The present invention reduces the amount of carbon material used by superimposing the polyurethane coating and the graphene / carbon nanotube conductive layer to ensure that the coating has good conductivity and good light transmission.

Description

technical field [0001] The invention belongs to the field of coating materials, and relates to a transparent conductive coating and a preparation method and application thereof. Background technique [0002] The preparation of composite conductive polymer materials by doping conductive materials is an important method for preparing conductive coatings. In the prior art, the composite conductive polymer material is a conductive composite material prepared by blending an electrically insulating polymer and a filler with conductive properties. The conductive material and a polymer with excellent mechanical properties are blended to prepare both excellent materials with good electrical conductivity and mechanical properties. Among them, the conductive coating using carbon black, graphite, carbon fiber, etc. as conductive fillers has the advantages of light weight, low price, and good environmental applicability. However, when carbon materials are used to prepare conductive coa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/14H01B13/00B82Y30/00H01B1/24C09D175/04C09D5/24C09D1/00
CPCH01B5/14H01B1/24H01B13/0026B82Y30/00C09D175/04C09D5/24C09D1/00C08K3/042C08K3/041
Inventor 李旭张运生刘飞马晓娜韩钰杰
Owner CHINA BUILDING MATERIALS ACAD