High pressure nitrogen storage bottle made of kevlar fiber and carbon fiber mixed composite material and its preparation method

A fiber composite material and composite material technology, applied in the field of composite high-pressure nitrogen storage cylinder and preparation, can solve the problems of low tensile strength and tensile modulus of glass fiber, low compressive performance of organic fiber, poor safety and reliability, etc. The molding process is easy to operate, the structure is optimized, and the comprehensive performance is excellent.

Inactive Publication Date: 2007-04-18
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention adopts single glass fiber, organic fiber or carbon fiber in order to solve the problem that the structural layer of the existing high-pressure nitrogen storage cylinder has low tensile strength and tensile modulus of glass fiber, and low compression performance of organic fibe...

Method used

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  • High pressure nitrogen storage bottle made of kevlar fiber and carbon fiber mixed composite material and its preparation method

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specific Embodiment approach 1

[0014] Embodiment 1: This embodiment is described with reference to FIG. 1 . This embodiment is composed of an inner lining layer 1, an adhesive layer 2, a fiber composite material layer and an outer protective layer 5 of glass fiber composite material. The fiber composite material layer is composed of a carbon fiber composite material inner structure layer 3 and a Kevlar fiber composite material outer structure layer. 4, the inner lining layer 1 is made of aluminum alloy, the outer surface of the aluminum alloy inner lining layer 1 is bonded to the adhesive layer 2, and the outer surface of the adhesive layer 2 is bonded to the inner surface of the carbon fiber composite material inner structural layer 3. , the inner surface of the Kevlar fiber composite material outer structure layer 4 is wound on the outer surface of the carbon fiber composite material inner structure layer 3, and the outer surface of the Kevlar fiber composite material outer structure layer 4 is wound with ...

specific Embodiment approach 2

[0015] Specific embodiment two: the preparation method of this embodiment adopts the following steps:

[0016] Step 1: First, evenly coat an elastic adhesive layer 2 with a thickness of 0.6 mm to 0.7 mm on the outer surface of the aluminum alloy inner lining layer 1;

[0017] In step 2, the inner structure layer 3 of carbon fiber composite material is formed by a wet method (impregnated epoxy resin) winding process on the outer surface of the elastic adhesive layer 2. Three layers of hoop winding, two to four layers of helical winding and two to three layers of hoop winding. The thickness of the inner structure layer 3 is 4.8mm-9.6mm, forming the inner structure layer 3 of the carbon fiber composite material;

[0018] In step 3, the outer surface of the carbon fiber composite material inner structure layer 3 made in step 2 is wound with the outer structure layer 4 of the Kevlar fiber composite material, and the winding adopts one to two layers of helical winding, two layers o...

specific Embodiment approach 3

[0022] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the thickness of the elastic adhesive layer 2 in step 1 is 0.6 mm; in step 2, two layers of helical winding and two layers of hoop winding are performed in sequence. , two-layer helical winding and two-layer hoop winding, the winding angle of the helical winding is 15.5°, the thickness of each winding layer is 0.6mm, and the winding thickness of the inner structural layer 3 of the carbon fiber hybrid composite material is 4.8mm; step three; One layer of helical winding, two layers of hoop winding, one layer of helical winding, and one layer of hoop winding are adopted in sequence. The winding thickness of the structural layer 4 is 2.5mm; in step 4, the two layers of glass fiber composite materials are spirally wound and two layers are circumferentially wound, and the helical winding angle is 25°, and the thickness of each winding layer is 0.5 mm. The winding thickness of the outer protective l...

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Abstract

The invention relates to a nitrogen cylinder and its preparation method, in which, on the outside surface of the lining is bonded an adhesive layer and the outside surface of the adhesive layer is bonded to the inside surface of the inner structure layer of carbon fibre composite; the inside surface of the outer structure layer of Kevlar fibre composite is wound on the outside surface of the inner structure of the outer structure layer is wound an outer protective covering. The method consists in: coating an elastic adhesive layer on the outside surface of the lining; overlying a spiral and toroidal wound inner structure layer, an outer structure layer and an outer protective covering; curing and then getting the present inventive nitrogen cylinder.

Description

technical field [0001] The invention relates to a composite material high-pressure nitrogen storage cylinder and a preparation method. Background technique [0002] Fiber reinforced composite materials have high specific strength and specific stiffness. Therefore, fiber composite high-pressure gas cylinders have been widely used in aerospace, aviation, advanced weapons, ships, emergency rescue, environmental protection vehicles and other fields. However, the working pressure of the composite high-pressure nitrogen storage cylinder is generally as high as 30MPa, and the number of fatigue cycles of charging and discharging is about 3000 times. Especially for high-pressure nitrogen storage cylinders used in aerospace, aviation, advanced weapons and other high-tech fields, it is also required to be light in weight, that is, the gas cylinder characteristic coefficient PV / W C value is higher. Therefore, it is urgent to find a new composite material high-pressure nitrogen storage...

Claims

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Application Information

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IPC IPC(8): F17C1/06F17C1/16
Inventor 张春华曹海琳孟令辉徐志伟
Owner HARBIN INST OF TECH
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