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Composite conductive film taking graphene as conductive agent and preparation method of composite conductive film

A composite conductive and composite film technology, applied in the field of thermoplastic resin polymer composite conductive film and its preparation, can solve the problems of easily destroying the graphene sheet structure, affecting the expected performance of the composite material, complicated preparation methods, etc., so as to improve the conductive performance. , the effect of light weight and good electrical conductivity

Active Publication Date: 2014-03-19
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to propose a kind of composite conductive thin film and preparation method thereof with graphene as conductive agent, solve the relatively complicated preparation method in the prior art, easily destroy the lamellar structure of graphene in the dispersing process, influence the anticipation of composite material Performance and other issues

Method used

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  • Composite conductive film taking graphene as conductive agent and preparation method of composite conductive film
  • Composite conductive film taking graphene as conductive agent and preparation method of composite conductive film

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preparation example Construction

[0032] The graphene / thermoplastic resin polymer composite conductive film of the present invention is characterized in that the graphene is uniformly distributed and overlapped to form a conductive network through double-roll mixing to form an antistatic thermoplastic resin polymer composite material. First, liquid calcium and zinc are stabilized Add the plasticizer to the plasticizer and stir evenly, then add the thermoplastic resin polymer to it and stir evenly, then mature the evenly mixed material in the oven, then add the graphene and stir evenly, and finally mix it with a two-roll mixer. Graphene / thermoplastic resin polymer composite conductive film. The preparation method of graphene / thermoplastic resin polymer composite conductive film includes the following processes:

[0033] (1) After pre-mixing an appropriate amount of dioctyl phthalate (DOP) and liquid calcium zinc stabilizer, add an appropriate amount of thermoplastic resin into a high-speed mixer and stir for 5-20 ...

Embodiment 1

[0040] The graphene / polyvinyl chloride (PVC) composite conductive film was prepared, and the content of graphene in the composite conductive film material was 0.5wt%.

[0041] First, weigh 50g of polyvinyl chloride resin, 30g of dioctyl phthalate plasticizer and 2g of liquid calcium zinc stabilizer CH400 in the ratio of 100:60:4, and combine the dioctyl phthalate and liquid calcium zinc After the stabilizer is initially mixed, the weighed polyvinyl chloride resin is added to it, and the mixture is stirred in a high-speed mixer (speed of 5000 rpm) for 5-20 minutes to make it uniform, and then placed in an oven at 80°C for 1 hour. ; Then add 0.412g graphene powder to the cured PVC, stir for 5-20 minutes in a high-speed mixer (rotating speed of 5000rpm), and mix evenly to obtain a well-mixed graphene / PVC composite powder; finally the above composite powder It is added to the twin rolls of a small precision twin-roll mill. The temperature of the front and rear rolls are 170℃ and 168℃...

Embodiment 2

[0044] The graphene / PVC composite conductive film was prepared, and the content of graphene in the composite conductive film material was 2.5wt%.

[0045] The amount of graphene added was 2.1 g, and the remaining raw material ratio and preparation method were the same as in Example 1. A graphene / polyvinyl chloride composite conductive film with a graphene content of 2.5 wt% was prepared, and the thickness was 0.5 mm.

[0046] After testing, the volume resistance of the conductive film is 1.5×10 5 Ω, volume resistivity 7.3×10 7 Ω·cm; surface resistance 3.5×10 6 Ω, surface resistivity 1.1×10 8 Ω / □.

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Abstract

The invention belongs to the field of polymer composite materials, and in particular relates to a composite conductive film taking graphene as a conductive agent and a preparation method of the composite conductive film. The composite conductive film is prepared by premixing polyvinyl chloride and graphene and then performing mixing in a double-roll mixing mill. The preparation method comprises the steps of firstly, adding a stabilizing agent and a plasticizing agent into polyvinyl chloride resin, stirring uniformly, and then curing the mixture in a drying oven; then, adding graphene into the mixture, and stirring uniformly; finally, mixing in the double-roll mixing mill to obtain a graphene / polyvinyl chloride composite conductive film, wherein the content of two-dimensional graphene in the composite material is 0.5-4.5wt%. The polymer base conductive composite material taking graphene as the conductive agent, provided by the invention, has the characteristics of light weight, corrosion resistance and adjustability resistivity on a large scale and the like, and is easy to process, so that the composite material can be widely applied to the modern electronics industry, information industry and high-tech fields. The composite conductive film disclosed by the invention is simple in process, high in production efficiency and easy in implementation of industrial large-scale production.

Description

Technical field [0001] The invention belongs to the field of polymer composite materials, and particularly relates to a thermoplastic resin polymer composite conductive film using a novel nano carbon material-graphene as a conductive agent and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) resin is currently one of the most used resins in the plastics industry. PVC resin can be widely used in the chemical, coal, electronics, computer, and radio communications industries. For example, in the field of electronics, it can be made into transparent special-shaped tubes for packaging electronic components through basic processes, but most electronic components, especially chips, require packaging materials with good antistatic properties, while soft PVC materials Surface resistivity up to 10 14 ~10 17 Ω / □ (square resistance), so its high electrical insulation makes the material easy to accumulate static electricity due to friction during use, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L25/06C08L67/02C08L23/06C08L23/12C08K13/02C08K3/04C08K5/12B29B7/56
Inventor 曾尤谢桂媛王函英哲任文才刘畅成会明
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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