Carbon fiber composite material high pressure gas cylinder

Abstract

The invention discloses a carbon fiber composite material high pressure gas cylinder, which comprises a metal inner liner, and also comprises a carbon fiber-wound composite layer and an outer protective layer disposed at the outer surface of the metal inner liner in order; the carbon fiber-wound composite layer is prepared by the following steps: mixing epoxy resin and a curing agent to obtain a colloidal solution, adding short-cut carbon fibers into the colloidal solution to obtain an epoxy resin impregnating solution, then impregnating continuous carbon fibers with the epoxy resin impregnating solution, winding the impregnated continuous carbon fibers on the outer surface of the metal inner liner, and performing curing to remove excess resin so as to obtain the carbon fiber-wound composite layer. The gas cylinder of the invention adopts the carbon fiber-wound composite layer doped with short-cut carbon fibers, thus improves the binding strength and shear strength between single carbon fibers and between layers, and enhances the bearing strength and crash resistance of the high pressure gas cylinder.

Description

technical field [0001] The invention belongs to the technical field of high-pressure gas cylinders, in particular to high-pressure gas cylinders with reinforced fiber composite layers. Background technique [0002] High-pressure gas cylinders are mainly used for the storage of high-pressure gases, such as medical oxygen, nitrogen and other liquids, and are required to withstand high pressures of 20-30 MPa. Therefore, the manufactured gas cylinder must require high airtightness, and the sealing of the gas cylinder mouth is sealed by high-heat rotary rolling technology. In order to ensure safe use under working pressure, ordinary high-pressure gas cylinders have a relatively large thickness, resulting in high-pressure gas cylinders that are heavy, inconvenient to carry, and costly. [0003] In addition, in order to reduce the weight of high-pressure gas cylinders, there are already pressure vessels with metal-lined composite materials. Because high-performance carbon fibers h...

AI Technical Summary

Problems solved by technology

The continuous carbon fiber impregnated with epoxy resin is wound on the surface of the metal lining in a special way to form a load-bearing protective layer, but because the winding of the continuous carbon fiber on the surface of the metal lining is actually monofilament winding, the bonding force between monofilaments Relatively low, and the shear strength between layers formed at the same time is relatively weak

Especially when there is a collision in the practical process of high-pressure gas cylinders, the high-pressure strength of the high-pressure gas cylinders is reduced, which poses hidden dangers to safe use

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