Method for preparing bionic structural color and mechanical property double-response component regulated and controlled by magnetic field through multi-material direct-writing 3D printing and product

Abstract

The invention discloses a method for preparing a magnetic field-regulated bionic structural color and mechanical property double-response component through multi-material direct-writing 3D printing and a product. The method comprises the following steps of: dispersing superparamagnetic nanoparticles in a non-volatile alcohol solvent to form a photonic crystal colloid mixed solution, mechanically stirring and mixing the photonic crystal colloid mixed solution with a rubber-like elastomer, and embedding photonic crystals into the rubber-like elastomer to form micro-emulsion drops, so as to obtain rubber-like elastomer composite printing slurry; using mineral oil-fumed silica nanoparticle suspension as a support, and using a biological printer to perform direct-writing 3D printing to obtain the magnetic field-regulated bionic structural color and mechanical property double-response component. By means of direct-writing 3D printing, components of different shapes can be formed and are not limited by templates; and double response is realized through external magnetic field regulation, and non-contact regulation can be realized. The preparation method is simple and convenient and low in cost; and the double-responsecomponent is long in structural color retention time and reusable, and has obvious advantages in information encryption and commodity anti-counterfeiting.

Description

technical field [0001] The invention relates to the field of 3D printing multifunctional response components, in particular to a method and product for preparing bionic structural color and mechanical performance dual response components regulated by a magnetic field by using multi-material direct writing 3D printing. Background technique [0002] Inspired by nature, imitating and manufacturing biological structures, functions and biochemical processes and applying them to material design, realizing the integrated manufacturing of structures and functions has become an important research frontier in the field of materials and manufacturing. Inherently multiscale, multimaterial and multifunctional structures create new approaches. [0003] Inspired by bionic structures, the functional applications of 3D printing are divided into mechanically enhanced structures and deformable structures; structures with shape changes triggered by humidity, heat, and light; 3D printing of inte...

AI Technical Summary

Problems solved by technology

At present, there are several methods for synthesizing photons: photolithography technology can produce precise photonic crystals, but special equipment is required and the cost is high; co-extrusion of multiple materials, fiber stretching or layer-by-layer deposition methods are used to synthesize Photonic crystals are usually limited by geometry, and complex shapes are difficult to shape; self-assembly of colloidal crystals requires uniform particles and controlled self-assembly conditions (prefabrication of templates or masks); another method is to convert colloidal particles from digital The stencil is printed directly onto the substrate so that steps such as stencil fabrication, masking, and etching can be omitted. Printing from digital stencils can be done by inkjet printing, but the size of the ink droplets limits the grain size of the resulting colloidal crystals. size, resulting in a weaker structural color