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4D printing method for curved surface IPMC

A curved, 4D technology, applied in the field of additive manufacturing, to achieve the effects of easy bootstrapping, good heat transfer, and improved rheology

Active Publication Date: 2021-12-03
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a 4D printing method for curved surface IPMC in view of the deficiencies in the above-mentioned prior art, using a conformal matrix for auxiliary molding, using electrothermal film technology for rapid curing, and combining Nafion with a high boiling point solvent The combination of multi-walled carbon nanotubes and multi-walled carbon nanotubes can meet the requirements of direct-write printing, and solve the problem that Nafion has weak forming ability and is difficult to manufacture complex flexible mechanisms. application potential

Method used

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  • 4D printing method for curved surface IPMC
  • 4D printing method for curved surface IPMC
  • 4D printing method for curved surface IPMC

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1) Carry out surface intelligent structure design according to functional requirements:

[0063] The functional requirement is a deformable ring, and the designed curved surface intelligent structure is a circular frustum shell, with a top radius of 5cm, a bottom radius of 10cm, a height of 20cm, and a thickness of 0.015mm for the curved surface intelligent structure. The simulation is carried out through the thermal equivalent model to meet the design requirements .

[0064] 2) Conformal matrix design:

[0065] The curved surface conformal matrix is ​​also a circular frustum shell, with a top radius of 5cm, a bottom radius of 15cm, a height of 30cm, and a thickness of 0.01mm for the conformal matrix structure. Silicon rubber is used for heating, and the temperature adjustment range is 60°.

[0066] 3) Printing ink configuration:

[0067] Take 50g of Nafion solution with a mass fraction of 20% and mix it with 50g of dimethylacetamide for heating and magnetic stirring ...

Embodiment 2

[0075] 1) Carry out surface intelligent structure design according to functional requirements:

[0076] The functional requirement is to realize the displacement and deformation of the departmental structure. The curved surface intelligent structure is designed as a circular frustum shell with a top radius of 1cm, a bottom radius of 2cm, and a height of 1cm. It extends 4cm along the generatrix of the circular frustum shell, and the thickness of the curved surface intelligent structure is 0.500. mm, simulated through the thermal equivalent model to meet the design requirements.

[0077] 2) Conformal matrix design:

[0078] The curved surface conformal matrix is ​​also a circular frustum shell, with a top radius of 1m, a bottom radius of 4cm, a height of 6cm, and a thickness of 0.15mm for the conformal matrix structure. Graphene is used for contact heating, and the temperature adjustment range is 70°.

[0079] 3) Printing ink configuration:

[0080] Take 60g of Nafion solution...

Embodiment 3

[0088] 1) Surface intelligent structure design:

[0089] The functional requirement is to realize the overall stretching and deformation of the structure. The curved surface intelligent structure is designed as a round table shell with a top radius of 3cm, a bottom radius of 3.25cm, and a height of 10cm. Eight stretching surfaces are evenly developed along the side of the round table, and the busbar extends 4cm in length. The stretching surface with an angle of 15°, the thickness of the stretching surface along the curved surface smart structure is 2.500mm, and the simulation is carried out through the thermal equivalent model to meet the design requirements.

[0090] 2) Conformal matrix design:

[0091] The curved surface conformal matrix is ​​also a circular frustum shell, with a top radius of 2.5cm, a bottom radius of 4cm, a height of 6cm, and a thickness of 0.20mm for the conformal matrix structure. Polyimide is used for contact heating, and the temperature adjustment rang...

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Abstract

The invention discloses a 4D printing method for curved surface IPMC. The method comprises the following steps that a three-dimensional curved surface intelligent structure of the curved surface IPMC is designed, and deformation simulation is carried out to enable movement to reach a design target; a temperature-controllable conformal substrate is designed according to the intelligent curved surface structure of the IPMC; nafion doped with a multi-walled carbon nanotube and a high-boiling-point solvent is used as printing ink; the printing ink is printed on the conformal substrate of the curved surface intelligent structure in a direct writing printing mode through a platform capable of achieving three-dimensional motion; and an electrode is plated on the curved-surface intelligent structure by using a chemical plating method, and functional verification is performed on the deformation of the curved surface intelligent structure. The problem of the 4D printing space forming capacity of an existing ion driving material is solved, a proper curved-surface intelligent structure is designed through the 4D printing technology, deformation of any dimension in the space can be achieved, the method is suitable for IPMC integrated preparation of a complex curved surface structure, and therefore the method has important application potential in the fields of flexible driving, bionic robots and the like.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a 4D printing method for curved IPMC. Background technique [0002] Ionic Polymer-Metal Composites (IPMC) has the advantages of low driving voltage, good flexibility, no noise, light weight, simple structure and suitable for working in water environment, etc. the key of. Although IPMC has many technical advantages compared with traditional drives, most of the existing processes are to obtain ion exchange membranes through the traditional process of casting film, and then plate electrodes through other processes. The obtained IPMC has a planar structure, which greatly limits the use of IPMC. widely used. [0003] 4D printing refers to the use of programmable substances (usually smart composite materials) as printing materials to print three-dimensional objects through 3D printing. Under predetermined excitations or stimuli (light, magnetism, water, el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/112B29C64/379B29C64/245B29C64/314B33Y10/00B33Y30/00B33Y40/20B33Y70/10
CPCB29C64/112B29C64/379B29C64/245B29C64/314B33Y10/00B33Y30/00B33Y40/20B33Y70/10Y02P70/50
Inventor 朱子才崔宇航程随军
Owner XI AN JIAOTONG UNIV
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