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Direct writing printing method of Nafion hollow tube structure

A hollow structure and hollow tube technology, applied in the field of 3D printing, can solve the problems of unfavorable hollow Nafion tube structure parameters diversified manufacturing, unfavorable promotion and application, etc., and achieve the effect of rapid manufacturing and moderate dissolution speed.

Pending Publication Date: 2021-06-25
SHAOYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing hollow tube casting film or hot pressing process to prepare Nafion hollow tube requires the manufacture of molds, which is not conducive to the realization of diversified manufacturing of hollow Nafion tube structural parameters, so it is not conducive to the promotion and application of this material

Method used

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  • Direct writing printing method of Nafion hollow tube structure
  • Direct writing printing method of Nafion hollow tube structure
  • Direct writing printing method of Nafion hollow tube structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] S1. Set the mass ratio of the ionic polymer solution Nafion with a mass fraction of 25% to dimethylacetamide (DMA) at 1:1, set the magnetic stirrer at 60°C, the rotational speed at 800rpm / min, and the stirring time for 7 hours , to obtain Nafion matrix 3D printing ink with a concentration of 45%;

[0057] S2. Mix the poloxamer (F127) powder with a mass ratio of 1:2.5 and deionized water, and rotate and stir with a planetary mixer at a speed of 2000rpm / min for 30min to obtain a colorless transparent gel-like sacrificial layer printing ink;

[0058] S3. First, put the Nafion matrix 3D printing ink and the sacrificial layer printing ink into the direct-writing printer with coaxial printing, adjust the extrusion pressure of the Nafion matrix 3D printing ink and the sacrificial layer printing ink respectively, and the Nafion matrix 3D printing ink. Extrusion pressure is P nafion =0.3MPa, the matching air pressure of the sacrificial layer printing ink is 0.3P nafion , so th...

Embodiment 2

[0061] Example 2S1, the mass ratio of the ionic polymer solution Nafion with a mass fraction of 22% and dimethylacetamide (DMA) is 1:2.5, the magnetic stirrer is set at 45°C, the rotating speed is 900rpm / min, and the stirring time is After 7 hours, Nafion matrix 3D printing ink with a concentration of 45% was obtained;

[0062] S2. Mix the poloxamer (F127) powder with a mass ratio of 1:2.75 and deionized water, and rotate and stir with a planetary mixer at a speed of 2000rpm / min for 30min to obtain a colorless transparent gel-like sacrificial layer printing ink;

[0063] S3. First, put the Nafion matrix 3D printing ink and the sacrificial layer printing ink into the direct-writing printer with coaxial printing, adjust the extrusion pressure of the Nafion matrix 3D printing ink and the sacrificial layer printing ink respectively, and the Nafion matrix 3D printing ink. Extrusion pressure is P nafion =0.3MPa, the matching air pressure of the sacrificial layer printing ink is 0.0...

Embodiment 3

[0067] S1. Set the mass ratio of the ionic polymer solution Nafion with a mass fraction of 20% to dimethylacetamide (DMA) at 1:3, set the magnetic stirrer at 60°C, rotate at 800rpm / min, and stir for 8 Hours, the Nafion matrix 3D printing ink with a concentration of 45% was obtained;

[0068] S2. Mix the poloxamer (F127) powder with a mass ratio of 1:3 and deionized water, and rotate and stir with a planetary mixer at a speed of 2000rpm / min for 30min to obtain a colorless transparent gel-like sacrificial layer printing ink;

[0069] S3. First, put the Nafion matrix 3D printing ink and the sacrificial layer printing ink into the direct-writing printer with coaxial printing, adjust the extrusion pressure of the Nafion matrix 3D printing ink and the sacrificial layer printing ink respectively, and the Nafion matrix 3D printing ink. Extrusion pressure is P nafion =0.6MPa, the matching air pressure of the sacrificial layer printing ink is 0.5P nafion , so that the extrusion air pr...

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Abstract

The invention discloses a direct writing printing method of a Nafion hollow tube structure. The direct writing printing method comprises the following steps that an ionic polymer solution Nafion and dimethyl acetamide are mixed and stirred, and then the mixture is subjected to vacuum-pumping treatment to obtain Nafion matrix 3D printing ink with the concentration of 45%; poloxamer powder is mixed with deionized water, and the mixture is stirred to obtain a colorless transparent gelatinous sacrificial layer printing ink; printing process parameters are set, direct writing printing is conducted through the prepared Nafion matrix 3D printing ink and sacrificial layer printing ink, and the hollow structure is obtained; and the obtained hollow structure is placed in vacuum to be subjected to heating curing treatment, then the cured structure is placed in water to remove the sacrificial layer, and the Nafion hollow pipe structure is obtained. According to the method, the 3D printing technology and the Nafion casting film are combined, and rapid manufacturing of the personalized multi-parameter Nafion hollow tube structure can be achieved.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a direct-writing printing method of a Nafion hollow tube structure. Background technique [0002] The tubular Nafion structure can be used to detect aromatic hydrocarbons, alkanes, etc. in tobacco, and can also be used to manufacture tubular ionic pressure, torsion, and stress sensors. However, the existing hollow tube casting film or hot pressing process to prepare Nafion hollow tube requires the manufacture of molds, which is not conducive to the realization of diversified manufacturing of hollow Nafion tube structural parameters, so it is not conducive to the promotion and application of this material. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a direct-write printing method of Nafion hollow tube structure in view of the deficiencies in the above-mentioned prior art, and combine 3D printing tec...

Claims

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Application Information

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IPC IPC(8): B29C64/118B29C64/314B29C64/379B29C64/393B33Y40/10B33Y40/20B33Y50/02B33Y70/10B33Y80/00
CPCB29C64/118B29C64/314B29C64/379B29C64/393B33Y40/10B33Y40/20B33Y50/02B33Y70/10B33Y80/00
Inventor 罗斌张世波李小兰
Owner SHAOYANG UNIV
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