Bionic metal laminate with self-cleaning function and preparation method thereof
A metal layer, self-cleaning technology, applied in the field of composite material parts forming in mechanical engineering, can solve problems such as poor microscopic bionic structure strength, and achieve the effects of improving self-cleaning, reducing surface energy, and reducing interface toughness
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Embodiment 1
[0089] Embodiment 1 discloses a biomimetic metal laminate with self-cleaning function. The biomimetic metal laminate includes: a layer of aluminum alloy thin plate as a base, and a combined biomimetic layer welded and fixed on the aluminum alloy thin plate.
[0090] The combined bionic layer is made of aluminum alloy;
[0091] The combined biomimetic layer is composed of a biomimetic unit group array composed of a biomimetic unit body with reduced interface toughness and another biomimetic unit group array composed of a biomimetic unit body with higher hydrophobic properties; wherein:
[0092] The biomimetic unit with reduced interface toughness comprises:
[0093] "Imitation of micro-nano protrusions on the surface of gecko skin": such as Figure 1b with Figure 2b As shown, the "imitation gecko skin surface micro-nano protrusion unit body" is a bionic structure based on the "gecko skin surface micro-nano protrusion structure". The top is a thorn-like structure with a cert...
Embodiment 2
[0139] Embodiment 2 discloses a biomimetic metal laminate with self-cleaning function. The biomimetic metal laminate includes: a layer of aluminum alloy thin plate as a base, and a combined biomimetic layer welded and fixed on the aluminum alloy thin plate.
[0140] The combined bionic layer is made of aluminum alloy;
[0141] Such as Figure 8As shown, the combined bionic layer is composed of an array of imitation shark skin unit groups arranged alternately and alternately;
[0142] The imitation sharkskin unit group array is a bionic structure based on the "shield scale" structure on the surface of shark skin, and the upper surface of the imitation sharkskin unit group array is in the shape of a shield-shaped scale with ups and downs;
[0143] Through the "shield scale" structure on the surface of the bionic shark skin, the array of imitation shark skin units has drag-reducing and hydrophobic properties, reduces the interface toughness of the material surface, and performs ...
Embodiment 3
[0153] This embodiment 3 discloses a preparation method of a bionic metal laminate with self-cleaning function, the specific process of the preparation method is as follows:
[0154] S1: According to actual needs, the biomimetic unit body with the corresponding structure in the above-mentioned embodiment 1 and embodiment 2 is prepared by using aluminum-based powder through compression molding;
[0155] The specific process of this step S1 is as follows:
[0156] First, if Figure 9a with 9c As shown, a lubricant is sprayed on the surface of the inner cavity of the combined bionic unit mold 10 composed of a structurally symmetrical bionic unit left half-mold 101 and a bionic unit right half-mould 102: alkyl n-ketene dimer ( AKD);
[0157] Then, the left half-mold 101 of the bionic unit body and the right half-mold 102 of the bionic unit body are combined and assembled, and clamped by a clamp, so that the inner cavity of the bionic unit body mold 10 forms a cavity that matche...
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Abstract
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