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Preparation method of porous ionic type electrically-driven polymer intelligent material

An ionic polymer and smart material technology, which is applied in the field of preparation of porous ionic electro-actuated polymer smart materials, can solve the problems of complex process and limited improvement of the driving performance of porous smart materials, and achieves simple process and enhanced electrical conductivity. , the effect of increasing the surface area

Inactive Publication Date: 2015-11-25
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing process is complicated, and additional pore-forming materials need to be added, and the improvement of the driving performance of porous smart materials is limited.

Method used

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  • Preparation method of porous ionic type electrically-driven polymer intelligent material
  • Preparation method of porous ionic type electrically-driven polymer intelligent material
  • Preparation method of porous ionic type electrically-driven polymer intelligent material

Examples

Experimental program
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Effect test

Embodiment 1

[0049] 1) Pour Nafion solution (produced by DuPont) and ethylene glycol into the mold for ultrasonic vibration treatment for 30min, mix evenly, and obtain the casting liquid; wherein, the volume of ethylene glycol is 1 / 10 of the volume of the Nafion solution;

[0050] 2) Vacuum melting and casting the mold containing the casting liquid in a vacuum drying oven at 120°C for 12 hours to obtain the Nafion matrix;

[0051] 3) The Nafion matrix was pre-frozen with liquid nitrogen for 30 min, then freeze-dried in a freeze-drying oven, and dried under vacuum from -80 °C at a heating rate of 1.5 °C / h for 23 h to obtain a porous Nafion matrix.

Embodiment 2

[0053] 1) Nafion solution (produced by DuPont) and dimethyl sulfoxide are poured into the mold and mixed uniformly to obtain a casting liquid; wherein, the volume of dimethyl sulfoxide is 1 / 10 of the volume of the Nafion solution;

[0054] 2) Vacuum melting and casting the mold containing the casting liquid in a vacuum drying oven at 120°C for 24 hours to obtain the Nafion matrix;

[0055] 3) The Nafion matrix was pre-frozen with liquid nitrogen for 15 minutes, then freeze-dried in a freeze-drying oven, and dried under vacuum from -70°C at a heating rate of 2°C / h for 24h to obtain a porous Nafion matrix.

Embodiment 3

[0057] 1) Nafion solution (prepared according to the preparation method in the patent CN102875940A) and dimethylformamide are poured into the mold and mixed uniformly to obtain a casting liquid; wherein, the volume of dimethylformamide is 1% of the volume of the Nafion solution / 10;

[0058] 2) Vacuum melting and casting the mold containing the casting liquid in a vacuum drying oven at 120°C for 20 hours to obtain the Nafion matrix;

[0059] 3) The Nafion matrix was pre-frozen with liquid nitrogen for 20 minutes, then freeze-dried in a freeze-drying oven, and dried at a temperature range of -80°C under vacuum for 72h at a heating rate of 1.5°C / h to obtain a porous Nafion matrix.

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Abstract

The invention provides a preparation method of a porous ionic type electrically-driven polymer intelligent material. When an ionic polymer-metal compound intelligent material is prepared, a Nafion solution and high-boiling-point additives are mixed, the mixture is pre-frozen in liquid nitrogen after vacuum casting and is then subjected to freeze drying, and finally the ionic polymer-metal compound intelligent material is prepared. When an ionic polymer gel intelligent material is prepared, deionized water, gel monomers, a cross-linking agent and an initiator are evenly mixed to obtain a feed solution; the feed solution is subjected to freeze drying after being pre-frozen in liquid nitrogen, and then immersed in the deionized water to swell at indoor temperature, and then the porous ionic polymer gel intelligent material is prepared. Under the condition that no additive is added, the porous ionic polymer-metal compound intelligent material formed through the freeze-drying process has the advantages of being high in deformation performance, high in response speed, weak in relaxation phenomenon and the like.

Description

technical field [0001] The invention relates to the field of smart materials, in particular to a method for preparing a porous ion-type electro-actuated polymer smart material. Background technique [0002] Ionic electro-actuated polymer smart materials Ion polymer-metal composites (IPMC: Ionic Polymer-Metal Composites) and ion polymer gels (IPG: Ionic Polymer Gels) are a new class of polymer smart materials, which can , first convert electrical energy into chemical energy, and then into mechanical energy, which is characterized by a low driving voltage (1-5V), directly using a battery to drive them and produce large deformations, and when external displacement or force is applied to the material Under excitation, a current or voltage sensing signal will be generated. It has the advantages of light weight, low driving voltage, good flexibility, and low energy consumption. It is widely used in bionic devices, flexible robots, optical instruments, medical devices, aerospace eq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08J3/075C08J3/24C08L33/26C08L79/02C08F220/56C08F222/38C08F222/14C08G73/02
Inventor 李涤尘赵东旭王永泉
Owner XI AN JIAOTONG UNIV
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