A kind of resin matrix composite material, preparation method and used vacuum bag

Abstract

The invention provides a resin matrix composite material and a preparation method and a vacuum bag for the resin matrix composite material. The concept of "layered manufacturing" is proposed. A large-thickness product is divided into a plurality of micro unit layers on the thickness by low-melting-point plastic films, and heating and pressurizing are performed after vacuum infiltration, so that internal defect of the product is reduced, and the molding speed is accelerated. The low-melting-point plastic is mixed with thermosetting resin after melting to form a layered toughening layer at the micro level, so that interlayer toughness of the product is improved. The concept of "layered manufacturing" provides a new idea for the manufacture of the resin matrix composite material.

Description

technical field

[0001] The invention relates to a method for preparing a resin-based composite material, belonging to the field of composite material manufacturing. Background technique

[0002] With the advantages of mechanical design, corrosion resistance, high specific strength, and high specific modulus, resin-based composite materials have always been one of the most popular materials in military fields such as aerospace, aviation, and weapons, and are also active in the core materials of high-end weapons and high-end products. . Our country also vigorously advocates the use of resin-based composite materials in the fields of aerospace and aviation to achieve the goals of "weight reduction and range extension", thereby improving the working efficiency and combat capability of aircraft. For example, the main parts of large aircraft in my country, such as vertical fins and rudders, use large-scale composite materials, and the amount of composite materials is used as an i...

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