Preparation method and composite material of fiber cloth with patterned conductive structure

Abstract

The invention belongs to the technical field of structure composite materials, and relates to a preparation method and a composite material of a piece of patterned conductive structure fiber cloth. According to the structural characteristics of an overlapped fiber resin based composite material, conductive connection inside a fiber layer can be achieved by using the preparation method, the softness of the fiber layer can be also maintained, and the composite material with high in-layer conductivity can be further prepared by utilizing the in-layer patterned conductive modified fiber layer. With the combination of the structural characteristics of the overlapped fiber composite material, and by virtue of the characteristics of solution uniformity, permeability, printing property and in-situ metallization of an organic silver reagent, in-layer and on-layer conductivity structure construction which is hard to achieve by using a conventional method can be achieved; besides, and with the further combination of an interlayer conductive structure, preparation of various composite materials with multi-layer composite conductive structures can be realized, and the composite materials can be applied to fields such as lightning protection, electromagnetic shielding, internal electronic circuit and ice control and elimination.

Description

technical field [0001] The invention belongs to the technical field of structural composite materials, and relates to a method for preparing patterned conductive structural fiber cloth and composite materials. Background technique [0002] Due to its high specific strength and specific modulus, continuous fiber reinforced resin matrix composites are more and more widely used in aviation, aerospace, shipbuilding and other fields. This material is usually made of continuous fibers, including carbon fibers, glass fibers, and aramid fibers, and is composited with a thermosetting resin as a matrix. However, the electrical insulation of the resin itself makes continuous carbon fiber reinforced resin matrix composites in the application process. Faced with the problems of lightning protection and electromagnetic shielding, glass fiber and aramid fiber composite materials as reinforcing materials are even more insulators. [0003] To solve the problem of lightning protection caused...

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Problems solved by technology

Due to the bridging effect of the particles, it is difficult for nanomaterials to enter the composite material layer, and the nanowire material with a large aspect ratio cannot enter the composite material layer. Electroless plating and electroplating methods can only metal-plate the fiber as a whole, and consume A large amount of water and chemicals cause chemical substances and heavy metal pollution, and the distribution of the metal coating cannot be controlled to obtain a conductive pattern; moreover, the fiber surface of the fiber fabric and the fiber surface of the functional layer used for intercalation are covered with metal layers, which are formed into After the composite material, there is inevitably an interface problem between the fiber-metal-matrix resin, resulting in a decrease in the performance of the composite material

In this way, all existing conductive functionalization methods for composite materials have the problem of poor conductivity in the layer thickness direction, while glass fibers, aramid fibers and other non-conductive fiber-reinforced composite materials are generally not conductive in the layer thickness direction

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