Method and product for preparing bionic structural color and mechanical properties dual response components regulated by magnetic field by using multi-material direct writing 3D printing

Abstract

The invention discloses a method and a product for preparing a bionic structural color and mechanical performance dual response component regulated by a magnetic field by using multi-material direct writing 3D printing. The method includes: dispersing superparamagnetic nanoparticles in a non-volatile alcohol solvent to form a photonic crystal colloidal mixture, and then mechanically stirring and mixing it with a rubber-like elastomer; photonic crystals are embedded in the rubber-like elastomer to form microemulsion droplets to obtain rubber Shaped elastomer composite printing paste; supported by mineral oil-fumed silica nanoparticle suspension, using bioprinter direct writing 3D printing to obtain bionic structural color and mechanical properties dual response components regulated by magnetic field. The invention relies on direct writing 3D printing to form components of various shapes without being limited by templates; it relies on external magnetic field regulation to achieve double response, and can realize non-contact regulation; the preparation method is simple, the cost is low, the structural color lasts for a long time, and can be used repeatedly , which 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