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3D printable and transparent conductive ion gel and its preparation and application

A conductive ion, 3D printing technology, applied in flexible conductive gel, transparent field, to achieve high conductivity, good electromechanical performance, wide working temperature range

Active Publication Date: 2022-05-17
浙江中特化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve higher strength, the substrates used are mostly cross-linked structures, which are usually difficult to prepare directly by 3D printing technology

Method used

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  • 3D printable and transparent conductive ion gel and its preparation and application
  • 3D printable and transparent conductive ion gel and its preparation and application
  • 3D printable and transparent conductive ion gel and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] This embodiment provides a preparation method of PUU polymer, the specific steps are as follows:

[0072] (1) Weigh 4.00g (2mmol) PEG (Mn=2000g / mol) in a 100mL three-neck flask, place it in a vacuum oven at 80°C to dry overnight, and place a small amount of phosphorus pentoxide in the vacuum oven at the same time to facilitate Remove all water. After drying, take out the three-necked flask, place it in an oil bath at normal temperature, add 10 mL of DMAC dried in advance with anhydrous sodium sulfate into the three-necked flask with a measuring cylinder, and add a magnet to stir. Then 0.1480 g (1 mmol) of dimethylolbutyric acid (DMBA), 4.00 g (18 mmol) of isophorone diisocyanate (IPDI) and 20 μL of dibutyltin dilaurate (catalyst) were added.

[0073] (2) The above mixture was heated to 70°C and then heated and stirred for 4 hours, then the reaction system was cooled to 50°C, and 18 mmol of H 2 O continued to stir the reaction. After adding water, as the reaction proc...

Embodiment 2

[0076] This embodiment provides a preparation method of conductive ion gel, the specific steps are as follows:

[0077] Take 1.0g of the PUU polymer prepared in Example 1 in a 10mL glass bottle, add 0.25g of 1-ethyl-3-methylimidazolium dicyandiamide salt, then add 4g of methanol, heat on a stirrer at 50°C to dissolve, and wait After the sample is dissolved, the solution is poured into a polytetrafluoroethylene mold of 5cm×5cm×1cm, and filter paper is placed on the mold to prevent bubbles from appearing when the methanol volatilizes too quickly. Dry naturally at room temperature for 1-2 days, and then place in a vacuum drying oven at 40° C. for further drying until constant weight to obtain a conductive ion gel with 20 wt % ionic liquid content.

Embodiment 3

[0079] This embodiment provides a preparation method of conductive ion gel, the specific steps are as follows:

[0080] Take 1.0g of the PUU polymer prepared in Example 1 in a 10mL glass bottle, add 0.43g of 1-ethyl-3-methylimidazolium dicyandiamide salt, then add 4g of methanol, heat on a stirrer at 50°C to dissolve, and wait After the sample is dissolved, the solution is poured into a polytetrafluoroethylene mold of 5cm×5cm×1cm, and filter paper is placed on the mold to prevent bubbles from appearing when the methanol volatilizes too quickly. Dry naturally at room temperature for 1-2 days, and then place in a vacuum drying oven at 40° C. for further drying until constant weight to obtain a conductive ion gel with 30 wt % ionic liquid content.

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Abstract

The invention relates to a 3D printable and transparent conductive ion gel composition and its preparation and application. The conductive ion gel of the present invention is prepared from a composition, which includes polyurethane urea with a linear structure, an ionic liquid and an organic solvent, and the ionic liquid accounts for 5%-80% of the mass fraction of the polyurethane urea with a linear structure. Ionic conductive gels of different structures can be constructed by direct writing 3D printing. The conductive ion gel of the present invention has good mechanical strength (stress up to 2.55MPa, strain up to 2200%), high transparency (up to 98%), high conductivity ( up to 3.18S m ‑1 ), and a wide operating temperature range. The excellent electromechanical properties of conductive ion gels make them have good strain sensing ability, which can be used to prepare strain sensors for monitoring various movements of the human body.

Description

technical field [0001] The invention relates to the field of transparent and flexible conductive gels, in particular to a 3D printable and transparent conductive ion gel and its preparation and application. Background technique [0002] With the rise of wearable devices, the demand and research of flexible sensors are increasing, which need to have strong stretchability, ductility, bendability and durability, low power consumption and quality, if it is skin-friendly Non-toxic sensors must also be biocompatible. Flexible sensors can be used in human health monitoring, human motion monitoring, human-computer interaction and soft robotics, etc. Traditional flexible and stretchable devices are based on a mixture of conductive fillers and elastomers, which have problems such as mismatching of mechanical properties, poor interfacial compatibility, and poor transparency, which limit their many potential applications. Stretchable conductive hydrogels have attracted extensive atten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08K5/3445B33Y70/10B33Y80/00C08G18/75C08G18/66C08G18/48C08G18/34C08G18/12C08G18/30G01B7/16C08J5/18C09D11/52C09D11/102
CPCC08K5/3445C08J5/18B33Y70/10B33Y80/00G01B7/18C08G18/755C08G18/6692C08G18/4833C08G18/348C08G18/12C09D11/52C09D11/102C08K2201/001C08J2375/08C08L75/08C08G18/302Y02P20/54
Inventor 郭明雨陈连敏
Owner 浙江中特化工有限公司
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