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Polyimide fiber composite material gas cylinder and preparation method and application thereof

A technology of polyimide fibers and winding composite materials, which is applied in the manufacture of mechanical equipment, fixed-capacity gas storage tanks, and container structures. It can solve the problems of poor strength, toughness, and impact resistance, and achieve good toughness and impact resistance. Performance, reduce product weight, avoid the effect of strength reduction

Active Publication Date: 2018-11-02
JIANGSU XIANNUO NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a polyimide fiber composite gas cylinder and its preparation method and application in order to overcome the defects of poor strength, toughness and impact resistance of the composite material gas cylinder in the prior art

Method used

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  • Polyimide fiber composite material gas cylinder and preparation method and application thereof
  • Polyimide fiber composite material gas cylinder and preparation method and application thereof
  • Polyimide fiber composite material gas cylinder and preparation method and application thereof

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preparation example Construction

[0047] According to the method of the present invention, the method also includes preparing a resin solution before step (1). The preparation method of the resin solution includes: preheating the resin composition to 30-40°C.

[0048] According to the method of the present invention, the number of winding layers can be calculated by using the finite element method according to the design working pressure of the gas cylinder. In the present invention, when the design working pressure of the gas cylinder is greater than 20 MPa, the number of winding layers calculated by the finite element method is greater than 20. For the specific calculation process of the finite element method, those skilled in the art can refer to the document "Finite Element Simulation of the Winding Process of a Pressure Vessel with Liner Wound, Zheng Changliang, Ren Mingfa, Chen Haoran, Mechanical Strength, 2006 (06): 913-918" Calculated by the finite element method.

[0049] According to the method of ...

Embodiment 1

[0058] This embodiment is used to illustrate the gas cylinder made of polyimide fiber composite material of the present invention and its preparation method.

[0059] (1) The monomers for synthesizing polyimide are: 3,3',4,4'-biphenyltetracarboxylic dianhydride (BPDA), 4,4'-terephthalic dioxydiphthalic anhydride (HQDA ), p-phenylenediamine (p-PDA), 4,4'-bis(4-aminophenoxy)biphenyl (BAPB), and the molar ratio of the above four monomers is 85:15:85: 15.

[0060] (2) The aluminum alloy liner was subjected to flaw detection, and then coated with a silicone adhesive (KJ-998 high-strength silica gel, purchased from Shenzhen Kejia Adhesive Material Co., Ltd.) on its surface.

[0061] (3) Preheating the resin composition to 30° C. to prepare a resin solution, and then immersing the polyimide fiber prepared in step (1) in the resin solution to obtain a polyimide fiber prepreg, wherein, The amount of polyimide fiber and resin composition is based on the polyimide fiber winding layer i...

Embodiment 2

[0066] This embodiment is used to illustrate the gas cylinder made of polyimide fiber composite material of the present invention and its preparation method.

[0067] (1) The monomers for synthesizing polyimide are: 3,3',4,4'-biphenyltetracarboxylic dianhydride (BPDA), 3,3',4,4'-diphenylsulfide tetraacid di anhydride (DTDA), p-phenylenediamine (p-PDA), 3,3'-diaminobenzophenone (DAPB), and the molar ratio of the above four monomers is 80:20:80:20.

[0068] (2) The aluminum alloy liner was subjected to flaw detection, and then coated with a silicone adhesive (KJ-998 high-strength silica gel, purchased from Shenzhen Kejia Adhesive Material Co., Ltd.) on its surface.

[0069](3) Preheating the resin composition to 40° C. to prepare a resin solution, and then immersing the polyimide fiber prepared in step (1) in the resin solution to obtain a polyimide fiber prepreg, wherein, The amount of polyimide fiber and resin composition is based on the polyimide fiber winding layer in the o...

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Abstract

The invention relates to the field of composite material pressure vessels, in particular to a polyimide fiber composite material gas cylinder and a preparation method and application thereof. The polyimide fiber composite material gas cylinder comprises an inner container and a polyimide fiber winding layer which is wound around the outer surface of the inner container, the polyimide fiber windinglayer contains a resin matrix and polyimide fiber dispersed in the resin matrix, and the polyimide fiber is formed by biphenyl polyimide. The invention also relates to the method for preparing the polyimide fiber winding composite material gas cylinder. The invention further relates to the application of the polyimide fiber winding composite material gas cylinder to an oxygen storage bottle for breathing, an oxygen bottle for diving or an oxygen bottles for a plateau. According to the polyimide fiber composite material gas cylinder and the preparation method and application thereof, the obtained gas cylinder is high in strength, toughness and impact resistance.

Description

technical field [0001] The invention relates to the field of composite material pressure vessels, in particular to a gas cylinder made of polyimide fiber composite material and its preparation method and application. Background technique [0002] Research on composite pressure vessels began in the 1950s, and they are mainly used for fuel gas storage tanks or pressure sources in the aerospace field. Because it has higher working pressure, better safety and lower weight than traditional metal material pressure vessels, it plays a vital role in the process of gas storage and transportation. Especially in recent years, with the rapid development of high-performance fiber technology, composite gas cylinders composed of metal lining and glass fiber or carbon fiber winding have been widely used in civil fields such as compressed natural gas, oxygen for breathing, and inflation of aircraft slides. . [0003] In the development process of fiber-wound composite gas cylinders for res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C1/06C08L79/08C08L63/00
CPCC08L79/08C08L2203/10C08L2205/02C08L2205/03F17C1/06F17C2201/058F17C2203/0609F17C2203/0619F17C2203/066F17C2203/0663F17C2209/2154F17C2209/232F17C2223/035C08L63/00
Inventor 武德珍田国峰牛鸿庆韩恩林
Owner JIANGSU XIANNUO NEW MATERIAL TECH