Preparation method of double-layer oxide modified carbon fiber reinforced composite material

Abstract

The invention provides a preparation method of a double-layer oxide modified carbon fiber reinforced composite material, wherein the surface of carbon fiber filaments is coated with a SiO2-blended Al2O3 coating sizing agent, so that a layer of oxide thin film is formed on the surface; finally an epoxy resin substrate is introduced by means of a RTM process to infiltrate the epoxy resin onto the surface of the carbon fiber cloth, then the epoxy resin is solidified and shaped to manufacture the carbon fiber reinforced epoxy resin based composite material, of which shear performance is improved by 16% and anti-impact performance is improved by 27%.

Description

technical field

[0001] The invention belongs to the technical field of surface modification of composite materials, and relates to a preparation method of a double-layer oxide modified carbon fiber surface modified composite material. Background technique

[0002] Honeycomb aluminum sandwich composite material refers to a layered structure composite material composed of aluminum panels (skins) and honeycomb core materials. At present, because the honeycomb sandwich structure is a light-weight structural material with excellent characteristics such as high specific strength, high specific modulus, good fatigue resistance and smooth surface, it has great application prospects in the civil and aerospace fields.

[0003] Although the honeycomb aluminum sandwich composite material has many advantages mentioned above, there are still many problems in the preparation process of the composite material with carbon fiber as reinforcement, such as the interface wettability between the ...