Bionic interlock-based Z-pin, 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: 2020-08-14
JILIN UNIV
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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
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[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 bionic interlock-based Z-pin, a composite material and a preparation method thereof. The Z-pin comprises a Z-pin main body and convex ridges; the Z-pin main body is a cylinder with a tip formed in the lower part; the convex ridges are arranged on the cylinder in a surrounding manner in a matrix arrangement; and the included angle between a tangent line of the upper part of each convex ridge and the axis of the Z-pin is greater than the included angle between the tangent line of the lower part of each convex ridge and the axis of the Z-pin. According to the bionic interlock-based Z-pin, the composite material and the preparation method thereof, special convex ridges in the matrix arrangement are arranged on the upper part of the Z-pin main body, so that the formedZ-pin is in friction and adhesion to a substrate, and meanwhile, can be hooked and interlocked with the substrate to form an interlock structure; the interlock structure provides additional interlocking force to resist interlayer failure of the composite material formed by the Z-pin and the substrate; and in addition, the Z-pin main body with the cylinder structure with the tip formed in the lowerpart is beneficial to quickly implanting the Z-pin disclosed by the invention into the substrate.
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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Login to View More 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