A method for preparing ion-type pressure array sensors based on 3D printing

Abstract

The invention discloses a method for preparing an ionic pressure array sensor based on 3D printing. An ionic polymer solution Nafion and high-boiling-point solvent are used as ion sensing raw materials, pluronic F 127 is used as a printing supporting layer raw material, and the ionic pressure array sensor can be prepared through 3D composite printing. According to the method, the printing Nafion solution and printing supporting gel F-127 are combined, the problems occurring in array structure manufacturing with the pure printing Nafion solution are solved, the method is suitable for manufacturing different types of Nafion polymer microstructure arrays and therefore great utilization potentiality is achieved in the fields of artificial skin, flexible sensing and the like.

Description

technical field

[0001] The invention belongs to the technical field of 3D printing, and in particular relates to a method for preparing an ion-type pressure array sensor based on 3D printing. Background technique

[0002] Ionic electroactive polymer (iEAP) material is a typical flexible smart material with sensing-driving bidirectional function, usually in the sandwich composite membrane structure of electrode-ionic polymer-electrode, and ionic polymer usually adopts Nafion solution or Nafion membrane, the polymer contains mobile ions and water molecules. Under the action of external force, the iEAP material bends, and the elastic stress gradient generated inside makes the mobile cations migrate to the outside of the bend, thereby forming a space charge gradient distribution and forming a potential difference between the two electrodes. Compared with traditional piezoelectric polymer materials, it has outstanding advantages such as light weight, low mechanical impedance and...

Examples

Embodiment 1

[0048] 1) Solution configuration;

[0049] Use a graduated cylinder to measure the Nafion solution 40ml and 10ml of dimethylacetamide (DMAC) with a mass fraction of 5% to mix, and magnetically stir and heat to concentrate until the concentration of Nafion is 40%;

[0050] 2) Planix gel configuration;

[0051] Weigh 4g of F-127 white powder, dissolve it in 6g of water, use a planetary mixer to stir evenly into a transparent gel, use a print head for preliminary inspection, the gel can be extruded into a uniform filament;

[0052] 3) Composite printing process;

[0053] S301, first load the ion polymer ink and F127 gel into the direct-writing printer with double nozzles, and adjust the extrusion air pressure for printing the ion polymer ink and F127 respectively, so that the nozzles can evenly discharge filaments;

[0054] S302, run the G code of the array model, the printer parameters are set to a layer thickness of 0.25mm, a scanning speed of 35mm / s, and an extrusion pressur...

Embodiment 2

[0060] 1) Solution configuration;

[0061] Use a graduated cylinder to measure 20ml of Nafion solution and 10ml of dimethylformamide (DMF) with a mass fraction of 5% and mix it with magnetic stirring, heating and concentrating until the concentration of Nafion is 60%.

[0062] 2) Planix gel configuration;

[0063] Weigh 3g of F-127 white powder, dissolve it in 7g of water, use a planetary mixer to stir evenly into a transparent gel, use a print head for preliminary inspection, the gel can be extruded into a uniform filament;

[0064] 3) Composite printing process;

[0065] S301, first load the ion polymer ink and F127 gel into the direct-writing printer with double nozzles, and adjust the extrusion air pressure for printing the ion polymer ink and F127 respectively, so that the nozzles can evenly discharge filaments;

[0066] S302, run the G code of the array model, the printer parameters are set to a layer thickness of 0.165mm, a scanning speed of 5mm / s, and an extrusion pr...

Embodiment 3

[0072] 1) Solution configuration;

[0073] Use graduated cylinder to measure the Nafion solution 10ml and 10ml of ethylene glycol (DMF) with a mass fraction of 5% and mix, magnetic stirring, heating and concentration until the concentration of Nafion is 50%

[0074] 2) Planix gel configuration;

[0075] Weigh 3g of F-127 white powder, dissolve it in 7g of water, use a planetary mixer to stir evenly into a transparent gel, use a print head for preliminary inspection, the gel can be extruded into a uniform filament;

[0076] 3) Composite printing process;

[0077] S301, first load the ion polymer ink and F127 gel into the direct-writing printer with double nozzles, and adjust the extrusion air pressure for printing the ion polymer ink and F127 respectively, so that the nozzles can evenly discharge filaments;

[0078] S302, run the G code of the array model, the printer parameters are set to a layer thickness of 0.2mm, a scanning speed of 15mm / s, and an extrusion pressure of 0....

technical field

[0001] The invention belongs to the technical field of 3D printing, and in particular relates to a method for preparing an ion-type pressure array sensor based on 3D printing. Background technique

[0002] Ionic electroactive polymer (iEAP) material is a typical flexible smart material with sensing-driving bidirectional function, usually in the sandwich composite membrane structure of electrode-ionic polymer-electrode, and ionic polymer usually adopts Nafion solution or Nafion membrane, the polymer contains mobile ions and water molecules. Under the action of external force, the iEAP material bends, and the elastic stress gradient generated inside makes the mobile cations migrate to the outside of the bend, thereby forming a space charge gradient distribution and forming a potential difference between the two electrodes. Compared with traditional piezoelectric polymer materials, it has outstanding advantages such as light weight, low mechanical impedance and...

Examples

Embodiment 1

[0048] 1) Solution configuration;

[0049] Use a graduated cylinder to measure the Nafion solution 40ml and 10ml of dimethylacetamide (DMAC) with a mass fraction of 5% to mix, and magnetically stir and heat to concentrate until the concentration of Nafion is 40%;

[0050] 2) Planix gel configuration;

[0051] Weigh 4g of F-127 white powder, dissolve it in 6g of water, use a planetary mixer to stir evenly into a transparent gel, use a print head for preliminary inspection, the gel can be extruded into a uniform filament;

[0052] 3) Composite printing process;

[0053] S301, first load the ion polymer ink and F127 gel into the direct-writing printer with double nozzles, and adjust the extrusion air pressure for printing the ion polymer ink and F127 respectively, so that the nozzles can evenly discharge filaments;

[0054] S302, run the G code of the array model, the printer parameters are set to a layer thickness of 0.25mm, a scanning speed of 35mm / s, and an extrusion pressur...

Embodiment 2

[0060] 1) Solution configuration;

[0061] Use a graduated cylinder to measure 20ml of Nafion solution and 10ml of dimethylformamide (DMF) with a mass fraction of 5% and mix it with magnetic stirring, heating and concentrating until the concentration of Nafion is 60%.

[0062] 2) Planix gel configuration;

[0063] Weigh 3g of F-127 white powder, dissolve it in 7g of water, use a planetary mixer to stir evenly into a transparent gel, use a print head for preliminary inspection, the gel can be extruded into a uniform filament;

[0064] 3) Composite printing process;

[0065] S301, first load the ion polymer ink and F127 gel into the direct-writing printer with double nozzles, and adjust the extrusion air pressure for printing the ion polymer ink and F127 respectively, so that the nozzles can evenly discharge filaments;

[0066] S302, run the G code of the array model, the printer parameters are set to a layer thickness of 0.165mm, a scanning speed of 5mm / s, and an extrusion pr...

Embodiment 3

[0072] 1) Solution configuration;

[0073] Use graduated cylinder to measure the Nafion solution 10ml and 10ml of ethylene glycol (DMF) with a mass fraction of 5% and mix, magnetic stirring, heating and concentration until the concentration of Nafion is 50%

[0074] 2) Planix gel configuration;

[0075] Weigh 3g of F-127 white powder, dissolve it in 7g of water, use a planetary mixer to stir evenly into a transparent gel, use a print head for preliminary inspection, the gel can be extruded into a uniform filament;

[0076] 3) Composite printing process;

[0077] S301, first load the ion polymer ink and F127 gel into the direct-writing printer with double nozzles, and adjust the extrusion air pressure for printing the ion polymer ink and F127 respectively, so that the nozzles can evenly discharge filaments;

[0078] S302, run the G code of the array model, the printer parameters are set to a layer thickness of 0.2mm, a scanning speed of 15mm / s, and an extrusion pressure of 0....

Images