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Manufacturing method of polyimide and graphene composite film

A technology of graphene composite and manufacturing method, which is applied in the field of thin film manufacturing, can solve the problems of low mechanical properties and insulation, and achieve the effect of good dispersion and simple manufacturing method

Inactive Publication Date: 2019-08-27
慧迈材料科技(广东)有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, due to the low mechanical properties and inherent insulation properties of polymer materials, they cannot meet the applications in some fields.

Method used

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  • Manufacturing method of polyimide and graphene composite film

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Embodiment Construction

[0014] In the following, examples will be described in conjunction with the method of the present invention, and the technical solutions in the examples of the present invention will be described. Obviously, the described examples are only some examples of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] Example 1: Weigh 50g of diaminodiphenyl ether and 200g of graphene powder, dissolve them in 400g of dimethylacetamide solution, slowly add them into 63.2g of pyromellitic dianhydride while stirring, and stir until the solution viscosity becomes There is a large phenomenon of climbing poles. Take out the above liquid and use an automatic film coating machine to evenly coat it on the tempered glass plate to make the film thickness 20 microns, then put the tempered glass p...

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Abstract

The invention discloses a manufacturing method of a polyimide and graphene composite film. The manufacturing method particularly comprises the steps of mixing required graphene, a solvent, diamine anddianhydride for reaction to prepare polyamic acid containing grapheme by an in-situ polymerization method, uniformly coating a flat plate with polyamic acid using a film coating machine, putting theflat plate in a high temperature oven for imidization to generate required polyimide, taking out a product, stripping a polyimide film off from the plate to form a required polyimide layer, putting the polyimide layer in the middle, paving epoxy resin layers above and below the polyimide layer, performing calendering combination using a calender to form the required material. The polyimide film prepared by the method has the characteristics of high mechanical strength and significant improvement of electroconductivity, and is a novel graphene doped polyimide film.

Description

technical field [0001] The invention relates to a method for manufacturing a thin film, in particular to a method for manufacturing a composite film of polyimide and graphene. Background technique [0002] Polyimide (PI) refers to a class of polymer materials containing imide rings in the main chain. It is a special polymer material that has been industrialized at present. It has superior physical and mechanical properties, excellent electrical and chemical stability. , Widely used in high-tech fields. The polyimide film is one of the earliest commodities and the largest one at the same time. This new type of high-temperature resistant organic polymer film is currently one of the best-performing film insulating materials and one of the most expensive film materials in the world, known as the "golden film". The excellent performance of polyimide film makes it play an increasingly important role in many fields. Together with carbon fiber and aramid fiber, polyimide film is ...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L79/08C08G73/10C08K3/04B32B27/28B32B27/38B32B27/08B32B7/08B32B27/20B32B33/00
CPCB32B7/08B32B27/08B32B27/20B32B27/281B32B27/38B32B33/00B32B2250/24B32B2250/40B32B2307/202B32B2307/54C08G73/1007C08G73/1071C08J5/18C08J2379/08C08K3/042C08K2201/001
Inventor 闵永刚饶秋实刘屹东
Owner 慧迈材料科技(广东)有限公司
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