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Polyimide/graphene X-ray window film and preparation method thereof

A technology of polyimide and window film, which is applied in the field of material testing of X-ray applications, can solve problems such as difficulty in use, processing, and toxicity of beryllium windows, and achieve good processing formability, simple processing methods, and good green effects

Active Publication Date: 2014-01-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the beryllium window prepared by the prior art cannot be used in the exposed air because of its toxicity, and the problem of processing difficulty, and provide polyimide / graphene X-ray window film and its preparation method

Method used

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  • Polyimide/graphene X-ray window film and preparation method thereof
  • Polyimide/graphene X-ray window film and preparation method thereof

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specific Embodiment approach 1

[0012] Embodiment 1: This embodiment is polyimide / graphene X-ray window film, which is prepared from graphene or graphene oxide, diamine monomer, dianhydride monomer and organic solvent. The graphene The mass ratio of the diamine monomer to the diamine monomer is 0.01:1, or the mass ratio of the graphene oxide to the diamine monomer is 0.01:1; the molar ratio of the dianhydride monomer to the diamine monomer is 1 : 1; the mass ratio of the volume of the organic solvent to the diamine monomer is 13.3mL: 1g.

[0013] As a special engineering material, polyimide film is widely used in aviation, aerospace, microelectronics, nanometer, liquid crystal, separation membrane, laser and other fields. Because of its outstanding features in performance and synthesis, its huge application prospects, whether as structural materials or functional materials, have been fully recognized. Thermosetting polyimide has excellent thermal and mechanical properties. The initial thermal decomposition ...

specific Embodiment approach 2

[0017] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the diamine monomer is diaminodiphenyl ether, p-phenylenediamine, 4,4'-diaminodiphenyl sulfone or 4, 4 Diaminodiphenylmethane. Others are the same as the first embodiment.

specific Embodiment approach 3

[0018] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the organic solvent is N'N-dimethylacetamide, N'N-dimethylformamide or N-formaldehyde base pyrrolidone. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a polyimide / graphene X-ray window film and a preparation method thereof, relates to the material testing field of X-ray application, specifically relates to an X-ray window film and a preparation method thereof, and aims to solve the problem that a beryllium window prepared by the prior art cannot be used barely in air due to toxicity and difficult to process. The polyimide / graphene X-ray window film is prepared from graphene or oxidized graphene, a diamine monomer, a dianhydride monomer and an organic solvent. The preparation method of the polyimide / graphene X-ray window film comprises the following steps of: 1, premixing to obtain a premixed solution; 2, finally mixing to obtain a colloid to be coated; 3, coating and carrying out thermal imidization treatment to obtain the polyimide / graphene X-ray window film. The preparation method provided by the invention is mainly used for preparing the polyimide / graphene X-ray window film.

Description

technical field [0001] The invention relates to the field of material testing for X-ray applications, in particular to an X-ray window film and a preparation method thereof. Background technique [0002] Because in the X-ray band, the absorption coefficient of the material to X-rays decreases with the decrease of the atomic number of the material, the atomic number of beryllium (Be) is 4, and has the characteristics of stable chemical properties and good ductility. As a traditional X-ray Ray window materials are widely used in synchrotron radiation light sources, electron microscopes, X-ray detectors, and X-ray diffractometers, but beryllium is highly toxic and expensive, and it is difficult to be widely used in new X-ray applications. For example, a certain The X-ray windows used in the vacuum chambers of the high and low temperature accessories in some X-ray diffractometers are arc-shaped and exposed to the air. The beryllium windows cannot be used because they are toxic a...

Claims

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Application Information

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IPC IPC(8): C08L79/08C08G73/10C08K3/04C08J5/18
CPCC08G73/1007C08J5/18C08J2379/08C08K3/04C08K9/00C08L2203/16C08L79/08
Inventor 费维栋冯宇孙跃王秒
Owner HARBIN INST OF TECH
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