Polyurethane cross-linked reduced graphene oxide composite conductive film and its preparation method and application

A technology of graphene composite and conductive film, which is applied in the direction of equipment for manufacturing conductive/semiconductive layers, cable/conductor manufacturing, conductive layers on insulating carriers, etc., can solve metal fatigue, difficult to reach the level of application, durability Poor corrosion performance and other issues
CN111613367BActive Publication Date: 2021-09-10NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Publication Date
2021-09-10

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Abstract

The invention discloses a polyurethane cross-linked reduced graphene oxide composite conductive film and its preparation method and application. The film is formed by cross-linking polyurethane and reduced graphene oxide, wherein the mass fraction of polyurethane is ≤20%. The preparation method includes: making a mixed solution of water-based polyurethane aqueous phase solution and graphene oxide aqueous phase solution, applying it on the substrate to form a polyurethane / graphene oxide composite film, and heating to form a polyurethane cross-linked graphene oxide composite film , dipped in a reducing agent to make the above-mentioned thin film of the present invention. The composite conductive film of the present invention has the advantages of light weight, high electrical conductivity, good corrosion resistance, ultra-high tensile strength and toughness, etc., is a new type of conductive film material, can be widely used in the preparation of flexible electronic devices, and has great advantages High use value and good application prospect. The preparation method of the invention is simple, easy to implement, low in cost, convenient and fast, simple and easy to operate, and is suitable for large-area use of special-shaped parts.
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Description

technical field

[0001] The invention belongs to the field of preparation of emerging materials, and relates to a composite conductive film and its preparation method and application, in particular to a polyurethane cross-linked reduced graphene oxide composite conductive film and its preparation method and application. Background technique

[0002] Due to the applicability of flexible electronic devices such as self-electronic devices, aerospace, artificial intelligence, and robotic arms, conductive films with super strength and high toughness have attracted widespread attention in recent years. And studies have shown that the preparation of conductive films with light weight, super strength, and high toughness usually needs to meet three conditions: ultra-high breaking strength, high elongation at break, and low density.

[0003] At present, common composite conductive films are mainly metal films or conductive polymer films. Although metal films have ultra-high strength an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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