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A kind of z-pin based on bionic interlock, composite material and preparation method thereof

A composite material, z-pin technology, applied in the field of composite materials, can solve the problem that composite materials do not have interlayer connection strength, interlayer toughness and interlayer peel resistance, etc., and achieve the effect of small friction

Active Publication Date: 2021-05-04
JILIN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a Z-pin based on bionic interlocking, a composite material and a preparation method thereof, aiming at solving the problem that existing composite materials do not have interlayer connection strength and interlayer toughness Problems with anti-delamination properties

Method used

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  • A kind of z-pin based on bionic interlock, composite material and preparation method thereof
  • A kind of z-pin based on bionic interlock, composite material and preparation method thereof
  • A kind of z-pin based on bionic interlock, composite material and preparation method thereof

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Embodiment Construction

[0024] In order to effectively solve the problem of interlayer failure, based on the inspiration of biological materials in nature, the existing typical bionic structures include: the "brick-mud mixed" structure of nacre, and the multi-level layered structure of tooth enamel, but the above structures It usually contains micro-nano biomaterials with complex composition and arrangement and complex chemical bond connection between heterogeneous materials, which is not suitable for macro-scale composite materials.

[0025] Such as figure 1 As shown, the cascading sliding lock system of bird feathers is a tight structure formed by the ridges of the proximal barbules 12 and the small hooks of the distal barbules 11, which can ensure that the birds still maintain the integrity of the feathers in complex flight states. Excellent performance and tear resistance, avoiding the feathers being separated in the chaotic airflow and affecting the flight. In addition, under extremely severe f...

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Abstract

The invention discloses a Z-pin based on bionic interlocking, a composite material and a preparation method thereof. The Z-pin includes a Z-pin body, and the Z-pin body is a cylinder with a tip at the bottom; a ridge, The ridges are arranged in a matrix around the cylinder; the angle between the tangent of the upper part of the ridge and the Z-pin axis is larger than the tangent of the lower part of the ridge and the Z-pin axis. The angle between the pin axes. In the present invention, specific convex ridges arranged in a matrix are arranged on the upper part of the Z-pin main body; while the formed Z-pin is rubbed and bonded to the substrate, it can be hooked and locked with the substrate to form an interlocking structure. The lock structure provides additional locking force to resist the interlayer failure of the composite material formed by the two; in addition, the Z-pin body with a cylindrical structure with a lower part is conducive to the rapid implantation of the Z-pin of the present invention into the matrix.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a Z-pin based on bionic interlocking, a composite material and a preparation method thereof. Background technique [0002] With the continuous development of modern engineering technology, the application range of composite materials has been continuously expanded. Composite materials can provide sufficient strength and rigidity under the premise of satisfying the lightweight of materials, and are welcomed by aerospace, rail transportation, automobile and other fields. However, due to the insufficient interlayer connection strength of composite materials, Type I and Type II interlayer fractures often occur. The form seriously affects the stable operation and normal work of mechanical parts and related instruments. Therefore, how to achieve good interlayer delamination resistance while satisfying the lightweight and high strength of composite materials, and improve t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/04B29C70/28
CPCB29C70/04B29C70/28
Inventor 韩志武宋文达韩奇钢王宇飞张斌杰张芷嫣
Owner JILIN UNIV
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