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

A fiber composite material and composite material technology, which are applied in the field of composite high-pressure nitrogen storage cylinders and preparation, can solve the problems of poor safety and reliability, low compression performance of organic fibers, low fracture strain resistance and impact toughness of carbon fibers, etc., and achieve high safety and reliability. performance, structural optimization, and long service life

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 structural layer of the existing high-pressure nitrogen storage cylinder, the tensile strength and tensile modulus of glass fiber are low, and the compression performance of organic fiber (such as PBO fiber) is low; Carbon fiber has low fracture resistance and impact toughness, resulting in low service life and poor safety and reliability of high-pressure nitrogen storage containers. A high-pressure nitrogen storage cylinder made of PBO fiber and carbon fiber hybrid composite material and its preparation method are provided.

Method used

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

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specific Embodiment approach 1

[0014] Specific implementation manner 1: This implementation manner is described in conjunction with FIG. 1 . This embodiment consists of an inner lining layer 1, an adhesive layer 2, a fiber composite material layer, and a glass fiber composite material outer protective layer 5. The fiber composite material layer is composed of a carbon fiber composite material inner structure layer 3 and a PBO fiber composite material outer structure layer. 4 components, the inner lining layer 1 adopts the neoprene inner lining layer 1, the outer surface of the neoprene inner lining layer 1 is bonded to the adhesive layer 2, and the outer surface of the adhesive layer 2 is bonded to the carbon fiber composite inner structure layer 3, the inner surface of the PBO 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 PBO fiber composite material outer structure layer 4 is wrappe...

specific Embodiment approach 2

[0016] Specific embodiment two: the preparation method of this embodiment adopts the following steps:

[0017] Step 1. First, paint an interface adhesive layer 2 with a thickness of 0.5mm to 0.6mm on the neoprene inner lining layer 1. When painting the adhesive layer 2, ensure that the coating is uniform and free of bubbles; The inner lining layer 1 is formed by pasting two layers of raw rubber sheets with a thickness of 2mm to 3mm on the cylindrical bottle body mold. The raw rubber sheets are vulcanized by heating and curing with the fiber composite material of the bottle body to form an overall airtight function. layer.

[0018] Step 2: On the outer surface of the adhesive layer 2, the carbon fiber composite material inner structure layer 3 is produced by using a fiber wet winding process, followed by one to two layers of spiral winding, two layers of hoop winding, one to two layers of spiral winding, and one to two layers of spiral winding. Two layers of hoop winding, one ...

specific Embodiment approach 3

[0024] Specific embodiment three: the difference between this embodiment and specific embodiment two is that the coating thickness of the elastic adhesive layer 2 in step one is 0.5 mm; in step two, one layer of helical winding and two layers of hoop winding are performed in sequence , one layer of helical winding, one layer of hoop winding, one layer of helical winding and one layer of hoop winding, the winding angle of helical winding is 16°, the thickness of each winding layer is 0.6mm, and the inner structure layer of carbon fiber hybrid composite material 3 has a thickness of 4.2 mm; in step 3, one layer of helical winding, one layer of hoop winding, two layers of helical winding, and one layer of hoop winding are used in sequence, and the winding angle of helical winding is 16°. The thickness is 0.4mm, and the thickness of the outer structural layer 4 of the PBO fiber composite material is 2mm; in step 4, the second layer of helical winding and the second layer of glass f...

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Abstract

The invention relates to a nitrogen cylinder and its preparation method, in which, on the outside surface of the neoprene 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 PBO fibre composite is wound on the outside surface of carbon fibre composite inner structure layer and on the outside surface of the outer structure layer of PBO fibre composite is wound an outer protective covering of glass fibre composite. The method consists in: coating an 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 preset 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, high-pressure gas cylinders made of fiber composite materials have been widely used in aerospace, aviation, advanced weapons, ships, emergency rescue, and environmentally friendly vehicles. The working pressure of the existing fiber composite high-pressure nitrogen storage cylinders is generally as high as 30MPa, and the fatigue times of cyclic charging and discharging are about 3000 times, especially for high-pressure nitrogen storage cylinders used in high-tech fields such as aerospace, aviation, and advanced weapons. Light weight, i.e. cylinder characteristic coefficient PV / W C The value should be high. The structural layers of existing composite material high-pressure nitrogen storage cylinders are all made o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C1/06F17C1/16
Inventor 张春华黄玉东孟令辉卢晓东黄姗
Owner HARBIN INST OF TECH
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