Production method of industrial-grade large-bunch carbon fiber composite high-pressure gas cylinder

Abstract

The invention discloses a production method of an industrial-grade large-bunch carbon fiber composite high-pressure gas cylinder. The production method comprises the following steps of coating a polyurethane or epoxide resin layer on the surface of a metal bottle body, and solidifying; preparing epoxide resin immersion liquid, determining that the viscosity is 600-750 mPa.s, winding on the surface of the metal bottle body by directly using a carbon fiber material strip after the carbon fiber material strip is immersed through the epoxide resin immersion liquid, controlling the winding tension to be between 250 N and 50 N, and gradually diminishing; carrying out semi-solidification at 60-90 DEG C, and removing redundant epoxide resin; then solidifying at 120-180 DEG C to obtain a carbon fiber composite layer; finally preparing a glass steel protective layer on the surface of the solidified carbon fiber composite layer. The production method disclosed by the invention overcomes the defect of poor immersing effect of large-bunch carbon fibers by directly adopting the product-grade large-bunch carbon fiber material strip with better immersing effect, thereby enhancing the bearing strength of the wound carbon fiber composite layer.

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

At present, carbon fiber includes small tow and large tow. Generally, small tow is used in the production of high-pressure gas cylinders made of carbon fiber wound composite materials, but the cost is relatively high; if industrial-grade large tow carbon fiber is used, due to the impregnation effect of large tow carbon fiber and resin Poor, uneven winding tension control makes it difficult to apply in carbon fiber winding composite materials for high-pressure gas cylinders