A kind of preparation method and application of ionic liquid conductive elastomer

A technology of ionic liquids and elastomers, applied in applications, cable/conductor manufacturing, circuits, etc., to achieve the effects of enhancing long-term use stability, improving mechanical properties, and excellent conductivity

Active Publication Date: 2022-08-09
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an ionic liquid conductive elastomer and a preparation method thereof. The mechanical properties of the material are effectively improved while the phase is prepared. The invention uses polybutyl acrylate as the elastomer matrix, and realizes the homogeneous distribution of the ionic liquid in the elastomer through the modified vinyl silica nanoparticles, and through facile photoinitiated polymerization to prepare

Method used

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  • A kind of preparation method and application of ionic liquid conductive elastomer
  • A kind of preparation method and application of ionic liquid conductive elastomer
  • A kind of preparation method and application of ionic liquid conductive elastomer

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preparation example Construction

[0026] A preparation method of an ionic liquid conductive elastomer, comprising the following steps:

[0027] Step 1: modifying the nano-silica to obtain amino-modified silica nanoparticles with amino groups on the surface;

[0028] Step 2: modifying the above-mentioned amino-modified silica nanoparticles to obtain vinyl silica nanoparticles with vinyl groups on the surface;

[0029] Step 3: Add the above-mentioned vinyl silica nanoparticles, ionic liquid, and butyl acrylate into a test tube, ultrasonically disperse for 10 min to obtain a homogeneous precursor solution, add a photoinitiator, and perform photoinitiation under ultraviolet light for 60 minutes. ~120min, the ionic liquid conductive elastomer was obtained.

[0030] Preferably, the amino-modified silica nanoparticles in step 1 of the present invention are specifically: dissolving the silica nanoparticles with a solvent, then adding a silane coupling agent, continuously heating and stirring for reaction, centrifugal...

Embodiment 1

[0041] Step 1: Dissolve 3.5 g of silica and 5 mL of silane coupling agent in 200 mL of toluene, continue to heat and stir in an oil bath at 90° C. for 12 h, centrifuge for precipitation, and freeze-dry to obtain amino-modified silica nanoparticles.

[0042] Step 2: Dissolve 1 amino-modified silica nanoparticles and 1 mL of methacryloyl chloride in 20 mL of toluene, stir and react at room temperature for 12 h, centrifuge for precipitation, and freeze-dry to obtain vinyl silica nanoparticles.

[0043] Step 3: Dissolve 100 mg of vinyl silica nanoparticles, 10 mg of photoinitiator, and 1 mL of ionic liquid in 1 mL of butyl acrylate monomer, and place the mixed solution in an ultrasonic disperser for uniform dispersion to obtain a precursor solution.

[0044] Step 4: Pour the precursor solution into the mold, place it in an ultraviolet photoreactor, and initiate the reaction with light for 2 hours to prepare an ionic liquid conductive elastomer.

Embodiment 2

[0046] The preparation was carried out according to the preparation method of Example 1, except that the addition amount of the vinyl silica was 200 mg, and Example 2 was prepared.

[0047]Step 1: Dissolve 3.5 g of silica and 5 mL of silane coupling agent in 200 mL of toluene, continue to heat and stir in an oil bath at 90° C. for 12 h, centrifuge for precipitation, and freeze-dry to obtain amino-modified silica nanoparticles.

[0048] Step 2: Dissolve 1 amino-modified silica nanoparticles and 1 mL of methacryloyl chloride in 20 mL of toluene, stir and react at room temperature for 12 h, centrifuge for precipitation, and freeze-dry to obtain vinyl silica nanoparticles.

[0049] Step 3: Dissolve 200 mg of vinyl silica nanoparticles, 10 mg of photoinitiator, and 1 mL of ionic liquid in 1 mL of butyl acrylate monomer, and place the mixed solution in an ultrasonic disperser for uniform dispersion to obtain a precursor solution.

[0050] Step 4: Pour the precursor solution into the...

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Abstract

The invention relates to a preparation method and application of an ionic liquid conductive elastomer. The conductive elastomer first realizes uniform mixing of ionic liquid and butyl acrylate through vinyl silica, and then initiates free radical polymerization by light to obtain . The nano-sized vinyl silica realizes the homogeneous mixing of the polar ionic liquid and the non-polar elastomer butyl acrylate monomer, and the prepared conductive elastomer has excellent conductivity. In addition, the introduction of vinyl silica also builds a cross-linked polymer network, which effectively improves the mechanical properties of the conductive elastomer and enhances the long-term stability of the material.

Description

technical field [0001] The invention belongs to the technical field of conductive elastomers, and particularly relates to an ionic liquid conductive elastomer and a preparation method and application thereof. Background technique [0002] In recent years, flexible electronic devices have received extensive attention in the fields of human motion sensing and detection due to their light weight, portability, and high sensitivity. At present, various materials, including hydrogels, conductive fiber films, and conductive elastomers, have become reliable candidates for the preparation of flexible electronic devices due to their excellent electrical conductivity and flexibility. Among them, conductive elastomers have better chemical and physical stability and better mechanical properties than materials such as hydrogels and conductive fiber films. Therefore, how to prepare conductive elastomers with excellent performance has become the field of flexible electronics. important sub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F220/18C08K5/3445G01B7/16A61B5/00A61B5/11H01B13/00
CPCC08F292/00C08K5/3445G01B7/16A61B5/11A61B5/6813A61B5/6832H01B13/00C08F220/1804Y02P20/54
Inventor 刘天西于晓辉凡小山
Owner DONGHUA UNIV
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