Method of reversely electroforming bionic replica surface directly by thin and brittle type biological surface

Abstract

The invention relates to the technical field of bionic manufacturing and in particular relates to a method of reversely an electroforming bionic replica surface directly by a thin and brittle type biological surface. The method comprises the steps such as thin and brittle type biological surface sampling and pre-treating, thermally evaporating and depositing a transition layer capable of being acid-etched on the thin and brittle type biological surface, casting an elastic high polymer backing on the outer surface of the transition layer capable of being acid-etched, low-temperature ashing and clearing of oxygen plasmas on the thin and brittle type biological surface, depositing a conductive metal layer on the inner surface of the transition layer capable of being acid-etched, reversely electroforming the replica directly on the thin and brittle type biological surface, clearing the elastic backing and the transition layer capable of being acid-etched. Compared with the prior art, the method disclosed by the invention can realize visible electroforming invisibly, and is especially suitable for electroforming replicas of thin and brittle type biological surfaces such as plant leaves and insect wings; a male mould of the same structure can be directly obtained by a biological prototype, so that reverse material-adding type electroforming replica is realized; and the metal hard bionic replica surface can be directly obtained.

Description

technical field [0001] The invention relates to a method for manufacturing a bionic surface, more particularly, a method for reversely electroforming a bionic replica surface directly from a thin and brittle biological surface, and belongs to the technical field of bionic manufacturing. Background technique [0002] After hundreds of millions of years of evolution, organisms have been continuously optimizing their structures and functions to adapt to the environment. The most direct and common phenomenon is that many organisms have gradually evolved various functional biological surfaces. Many insects, plants, fish, birds, etc. have various types of functional biological surfaces, and the biological functions they present include camouflage, desorption, self-cleaning, drag reduction, noise reduction, etc., to create bionic functional surfaces for humans Provides an incomparably superior biological prototype template. [0003] High-fidelity replicas of natural biological sur...

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Problems solved by technology

[0004] However, the above-mentioned electroforming biological replica method also has its limitations: (1) Most of the biological prototypes targeted are biological surfaces with a certain thickness, strength and toughness, while for fragile types such as plant leaves, insect wings, etc. In the case of biological prototypes, there are problems such as the biological prototypes are thin and fragile and difficult to handle, and the biological prototypes are easily disturbed by the heat flow of the electroforming liquid during the deposition process, and then deform and fall off, resulting in insufficient electroforming or even failure; (2) Forward additive type The electroforming mode determines that it can only produce a negative template corresponding to the surface of the biological prototype at one time, and a follow-up molding process is required to make a positive mold with the same shape; (3) The obtained metal negative template determines its It is difficult to make a metal male mold in the subsequent molding process, that is, it is difficult to directly obtain a hard bionic replica surface by using this method

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