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Bionic intelligent surface 3D printing method with controllable resistance and wettability

A 3D printing and wettability technology, applied in the direction of 3D object support structure, processing and manufacturing, manufacturing tools, etc., to achieve the effect of intelligent characteristics, simple process and remarkable effect

Active Publication Date: 2019-08-30
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing research is limited to the preparation of permanent structural and functional surfaces on the surface of materials by using technologies such as hot micro-press forming, micro-electroforming, EDM, and roll forming. These surface structures present a permanent and unchangeable characteristics, and will not change with the environment

Method used

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  • Bionic intelligent surface 3D printing method with controllable resistance and wettability
  • Bionic intelligent surface 3D printing method with controllable resistance and wettability
  • Bionic intelligent surface 3D printing method with controllable resistance and wettability

Examples

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Embodiment 1

[0045] The design and manufacture of a microfluidic non-mechanical drive valve device realized by the present invention, the specific technical scheme is as follows:

[0046] A. Material composition and preparation

[0047] Component 1: poly 2-vinylpyridine (P2VP-COOH) (95wt.%), magnetic fiber (or magnetized fiber) after coupling agent treatment (fiber diameter is 5-13 μm, aspect ratio is 4 -15) (4.5 wt.%) and fumed silica (0.5 wt.%).

[0048] Component 2: tert-butyl carboxyl-terminated polyacrylate (PBA-COOH) (95wt.%), magnetic fiber (or magnetized fiber) after coupling agent treatment (fiber diameter is 5-13 μm, aspect ratio is 4-15) (4.5 wt.%) and fumed silica (0.5 wt.%).

[0049] Component 3: polyglycidyl methacrylate (PGMA) (99.4 wt.%) fumed silica (0.6 wt.%).

[0050] The above components are mixed in proportion and ready for use.

[0051] B. Bionic intelligent surface molding

[0052] In this specific implementation case, the multi-material 3D printing molding method...

Embodiment 2

[0060] The design and manufacture of a smart surface with controllable liquid delivery path on inclined planes realized by the present invention, the specific technical scheme is as follows:

[0061] A. Material composition and preparation

[0062] Component 1: poly 2-vinylpyridine (P2VP-COOH) (94wt.%), magnetic fiber (or magnetized fiber) after coupling agent treatment (fiber diameter is 5-13μm, aspect ratio is 4 -15) (5.3 wt.%) and fumed silica (0.7 wt.%).

[0063] Component 2: tert-butyl carboxyl-terminated polyacrylate (PBA-COOH) (94wt.%), magnetic fiber (or magnetized fiber) after coupling agent treatment (fiber diameter is 5-13 μm, aspect ratio is 4-15) (5.3 wt.%) and fumed silica (0.7 wt.%).

[0064] Component 3: polyglycidyl methacrylate (PGMA) (99.5 wt.%) fumed silica (0.5 wt.%).

[0065] The above components are mixed in proportion and ready for use.

[0066] B. Bionic intelligent surface molding

[0067] In this specific implementation case, the gradient 3D pri...

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Abstract

The invention discloses a bionic intelligent surface 3D printing method with controllable resistance and wettability. The method comprises the following steps that three kinds of component materials are selected, and the hydrophobic component materials are protonized during exposing to a low pH (less than 7) solution, so that a component area extends and protrudes on the surface, and the surface is hydrophobic; the component materials are protonized to extend during exposing to a high pH (greater than 7) solution, the component materials shrink back to original shape, the hydrophilic componentmaterials is prominent on the intelligent surface, the whole surface is hydrophilic, and the component materials is the matrix materials; then, combined material properties with bionic drag reductionsurface design, the bionic intelligent surface with complex material distribution is formed by multi-material 3D printing or gradient 3D printing, and an oblique extruder is used in the printing process, so that fibers in the materials are arranged with the printing path; and finally, the internal directional magnetic fibers float on the surface of the materials under the action of magnetic forceby post-treatment curing in an alternating magnetic field under certain conditions.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a bionic smart surface 3D printing method with controllable resistance and wettability. Background technique [0002] Surface frictional resistance accounts for a large proportion in the total resistance of transportation, especially for underwater vehicles, up to 80%. Animals and plants in nature have fully adapted to the environment after hundreds of millions of years of evolution to adapt to the harsh living environment. The structural and functional surfaces obtained by the evolution provide a source of inspiration for today's industrial field to solve the problem of underwater surface friction resistance. For example, Huaiwei Chen et al., inspired by the rib and groove structure on the shark's body surface, imitated the relevant structural and functional surface and conducted experiments. The test results showed that the surface drag reduction effect is obvious. ...

Claims

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Application Information

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IPC IPC(8): B29C64/106B29C64/379B33Y10/00B33Y40/00
CPCB29C64/106B29C64/379B33Y10/00B33Y40/00
Inventor 刘庆萍周雪莉宋正义何禹霖林峰任露泉
Owner JILIN UNIV
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