Fiber reinforced composite material with surface self-repairing function

Abstract

The invention discloses a fiber reinforced composite material with a surface self-repairing function, which comprises a fiber woven base body, wherein a plurality of primary pipelines are pre-buried in the preparation process of the fiber woven base body, after the fiber woven base body is prepared, the surface layer of the fiber woven base body is drilled according to the positions of the primary pipelines until the fiber woven base body is communicated with the primary pipelines, and the obtained channel is a secondary pipeline; and the surface layer of a fiber woven base body is coated with a layer of primer, then a micro-nano structure film laid at the position of a pipe opening of a secondary pipeline, a layer of plastic protection film is laid on the micro-nano structure film, the micro-nano structure film and the plastic film jointly form a flow guide layer, then a layer of finish paint is prepared on the fiber woven base body, and the primer and the finish paint jointly form a coating. The composite material is provided with three stages of repairing pipelines, namely, primary pipelines, secondary pipelines and the micro-nano structure film, when the surface is damaged, external stimulation conditions are not needed, the damaged part can be repaired by pumping a repairing agent, and multiple times of repairing can be achieved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a fiber-reinforced composite material with surface self-repairing function. Background technique [0002] When the surface of the fiber-reinforced composite material is damaged by scratches, abrasions, cracks, etc., the fibers of the fiber-reinforced composite material will be exposed, and the exposed fibers will age and break under the influence of sun and rain erosion or other unfavorable factors. As a result, composite components fail and accidents occur. At present, the main fiber-reinforced repair is to manually detect the surface damage and repair it manually, and there are also some cutting-edge researches on self-repair. Self-healing includes intrinsic self-healing and external aid self-healing. Intrinsic self-healing: using self-healing coatings to stimulate repair behavior under certain conditions; external aid self-healing: surface damage trigg...

AI Technical Summary

Problems solved by technology

However, in the existing cutting-edge research, intrinsic self-healing coatings require certain external stimulation conditions such as light, heat, and magnetism, and the conditions are complex. Existing external self-healing schemes, such as capsule self-healing and preset pulse Tube self-healing, due to the limited capacity of the repairing agent, multiple self-healing cannot be achieved

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