Light anti-bending and anti-torsion bionic composite material and preparation method thereof

Abstract

The invention discloses a light anti-bending and anti-torsion bionic composite material and a preparation method thereof. The composite material comprises a bottom layer, a lower partition plate layer, a hollow structure middle layer, an upper partition plate layer and an outer layer which are sequentially arranged in a stacked mode from bottom to top; the hollow structure middle layer comprises a first-stage dense hole structure, a loose hole upper-layer structure, a first-stage loose hole structure, a loose hole lower-layer structure and a second-stage dense hole structure which are sequentially stacked from bottom to top; and the first-level compact pore structure, the first-level loose pore structure and the second-level compact pore structure are each composed of a woven fiber resin layer, and each woven fiber resin layer is formed by alternately winding weft-wise fibers and warp-wise fibers on a core film. The middle layer of the hollow structure is arranged in the mode that the outside is dense and the inside is sparse, the weight of the material can be reduced, the specific rigidity of the material can be improved, when the material is bent, the upper surface of the middle layer of the hollow structure bears tensile stress, the lower surface of the middle layer of the hollow structure bears tensile pressure, and the bending resistance and toughness of the material are improved.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a light-weight bending-torsion-resistant bionic composite material and a preparation method thereof. Background technique [0002] With the development of modern science, aviation, aerospace, rail transit, biomedicine and other fields have put forward higher requirements for engineering materials. Composite materials have excellent characteristics of small specific gravity, high specific strength and high specific modulus. In some On the one hand, it has more excellent characteristics than metal materials. Moreover, many characteristics of biological materials in nature are worth learning. For example, birds need to face complex turbulence when flying in the air for a long time, so they have evolved unique lightweight and high-strength structures to meet complex environmental conditions. Bird feathers are an extremely lightweight material that spans multiple scales, from n...

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Problems solved by technology

[0004] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a light-weight bending-torsion-resistant bionic composite material and its preparation method, aiming at solving the problems of insufficient specific stiffness, heavy weight, and low bending-torsion strength of traditional metal materials, and Poor chemical stability, easy to corrode, difficult to meet the needs of industry development

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