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A kind of composite gas cylinder and its preparation method

A technology of composite materials and composite material layers, applied in the field of composite material pressure-resistant containers, can solve the problems of poor chemical stability, dependence on imports, and poor weather resistance, and achieve low production costs, reduced production costs, and extensive acid and alkali resistance.

Active Publication Date: 2022-03-25
北京玻钢院复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Glass fiber has high strength and high elastic modulus, but poor weather resistance, high water absorption, and poor chemical stability to acids, alkalis and other corrosive media
The strength, modulus, weather resistance, and corrosion resistance of carbon fiber are significantly higher than those of glass fiber, but the cost is too high, relying on imports, and procurement is easily restricted by the international situation

Method used

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  • A kind of composite gas cylinder and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as figure 1 As shown, the composite gas cylinder described in this embodiment has a working pressure of 35 MPa, a volume of 50 L, and a cylindrical inner tank. Including set up in order from inside to outside:

[0052] Stainless steel liner 1;

[0053] The adhesive transition layer 2 has a thickness of 0.5mm. The preparation raw materials of the adhesive transition layer include glass fiber cloth and adhesive, and the preparation raw materials of the adhesive include epoxy resin with a mass ratio of 100:90:0.8 , Methyltetrahydrophthalic anhydride, N, N-dimethylbenzylamine;

[0054] The carbon fiber composite material layer 3 has a thickness of 2.5mm. The raw materials for the preparation of the carbon fiber composite material layer include a bismaleimide resin matrix (the measured glass transition temperature is greater than 250°C) and Toray T700SC-1200K carbon fiber reinforced material (wire Density 800tex, retest tensile strength 5120MPa), wherein, the mass pe...

Embodiment 2

[0067] For the composite gas cylinder of this embodiment, the rest of the preparation steps are the same as in Example 1, except that the raw materials for the preparation of the adhesive in the bonding transition layer 2 are epoxy resin, methyl Tetrahydrophthalic anhydride, N,N-dimethylbenzylamine.

[0068] The composite gas cylinder has passed the air tightness test of 35MPa and the water pressure test of 52.5MPa. And after -60°C low temperature test and 180°C high temperature test, the air tightness test is qualified, and it has passed the low temperature test and high temperature test.

Embodiment 3

[0070] For the composite gas cylinder of this embodiment, the rest of the preparation steps are the same as those in Example 1, except that in step S3, the basalt fiber reinforcement material impregnated with bismaleimide resin matrix is ​​sequentially rotated at 89° / 20° / 89° / 65° / 10° / 89° / 15° / 89° / 20° / 89° / 65° / 10° / 89° / 15° / 89° / 20° / 89° / 60° / 10° / 89 ° / 15° / 89° / 10° / 89° hoop winding and helical winding are alternately wound to the outer surface of the carbon fiber composite material layer.

[0071] The composite gas cylinder has passed the air tightness test of 35MPa and the water pressure test of 52.5MPa. And after -60°C low temperature test and 180°C high temperature test, the air tightness test is qualified, and it has passed the low temperature test and high temperature test.

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Abstract

The invention provides a composite material gas cylinder and a preparation method thereof. The composite material gas cylinder includes: an inner tank arranged in sequence from the inside to the outside; an adhesive transition layer, and the preparation raw materials of the adhesive transition layer include glass fiber cloth and an adhesive The preparation raw materials of the adhesive include: epoxy resin, curing agent and accelerator; the basalt fiber composite material layer, and the preparation raw materials of the basalt fiber composite material layer include bismaleimide resin matrix and basalt fiber reinforcement material. The composite gas cylinder uses bismaleimide as a matrix material and basalt fiber as a main reinforcement material, and has good high temperature resistance and low cost.

Description

technical field [0001] The invention belongs to the technical field of composite material pressure-resistant containers, and in particular relates to a composite material gas cylinder and a preparation method thereof. Background technique [0002] Composite high-pressure gas cylinders began in the 1950s. They are characterized by light weight, high strength, high modulus, and strong designability. They are widely used in important fields such as aviation and aerospace. With the continuous development of aerospace technology, the demand for manned moon landing technology, and the demand for high-performance gas cylinders in the field of launch vehicles, missiles, and aviation, a high-performance gas cylinder shaped product with strong resistance to high and low temperature environments is needed. [0003] At present, the matrix material of composite gas cylinders used in aerospace is mostly epoxy resin matrix, such as Chinese patent document CN112963722A, which discloses a me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17C1/06F17C1/12B29C70/68B29C70/70B32B1/02B32B15/18B32B15/14B32B17/02B32B9/00B32B9/04B32B33/00B32B37/00B32B37/12B32B38/08B32B38/00C09J163/00
CPCF17C1/06F17C1/12B32B1/02B32B15/18B32B15/14B32B5/02B32B5/26B32B33/00B32B37/00B32B37/12B32B38/08B32B38/0036C09J163/00B29C70/681B29C70/70F17C2201/0128F17C2201/0104F17C2203/0663F17C2203/03F17C2203/0624F17C2203/0643B32B2038/0076B32B2262/106B32B2262/10B32B2262/101B32B2255/02B32B2255/26B32B2260/021B32B2260/046B32B2307/712B32B2307/714B32B2307/306B32B2307/50
Inventor 王金娜刘魏魏杨克伦宗磊江亚彬赵龑浩
Owner 北京玻钢院复合材料有限公司
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