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Bionics artificial thews material based on electro spinning superfine fibre and method for making same

A technology of ultra-fine fibers and artificial muscles, applied in the field of artificial muscle materials, can solve problems such as slow progress, and achieve the effect of reducing contraction force and expanding performance

Inactive Publication Date: 2007-12-05
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the improvement and development of artificial muscle polymer materials with many excellent properties to meet people's needs has attracted great attention from scientists and engineers all over the world. Unfortunately, so far, the progress is still very slow.

Method used

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  • Bionics artificial thews material based on electro spinning superfine fibre and method for making same

Examples

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Effect test

Embodiment 1

[0023] A 20% polyacrylonitrile N,N-dimethylformamide solution with an average molecular weight of 80,000 was prepared. Then it was prepared into polyacrylonitrile microfibers with a size of hundreds of nanometers by electrospinning. After cross-linking at 220 degrees Celsius for 1 hour, the microfibers were treated in 1 mol / l sodium hydroxide aqueous solution at 90 degrees Celsius for 30 minutes, and finally washed and dried to obtain acid-base response composed of cross-linked polyacrylic acid. artificial muscle material. The material shrinks under acidic conditions and stretches under alkaline conditions.

Embodiment 2

[0025] A 20% polyacrylonitrile N,N-dimethylformamide solution with an average molecular weight of 80,000 was prepared. Then, the polyacrylonitrile superfine fibers with a size of hundreds of nanometers arranged in alignment were prepared by electrospinning by using a collection device composed of parallel iron wire arrays connected side by side with an interval of 2 mm. After cross-linking the superfine fiber at 220 degrees Celsius for 1 hour, treat it in 1mol / l sodium hydroxide aqueous solution at 90 degrees Celsius for 30 minutes, and finally wash and dry it to obtain the cross-linked polyacrylic acid superfine fiber with orientation arrangement Acid-base responsive artificial muscle material. The material can shrink or stretch by controlling acid and alkali conditions.

Embodiment 3

[0027] A N,N-dimethylformamide solution of polyacrylonitrile with an average molecular weight of 80,000 with a mass concentration of 20% and carbon nanotubes with a mass concentration of 1% was prepared. Then, polyacrylonitrile microfibers with a size of hundreds of nanometers arranged in alignment were prepared by electrospinning. After cross-linking at 220 degrees Celsius for 1 hour, the ultra-fine fibers are treated in 1 mol / l sodium hydroxide aqueous solution at 90 degrees Celsius for 30 minutes, and finally cleaned and dried to obtain carbon nanotubes with improved strength and alignment. Acid-base responsive artificial muscle material composed of cross-linked polyacrylic acid microfibers.

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Abstract

The present invention is process of preparing bionic artificial muscle material based on superfine electrically spun fiber and capable of being used in sensor, executor robot and other fields. The bionic artificial muscle material is film comprising oriented superfine fiber of 20 nm-10 micron diameter. It is prepared through an electrical spinning process including the following steps: 1. forming solution or melt of polymer material for the artificial muscle; 2. electrically spinning to form oriented superfine fiber film; and 3. treating the superfine fiber film for raised stretching function. The bionic artificial muscle material has high response speed, high energy converting efficiency and other advantages.

Description

technical field [0001] The invention relates to an artificial muscle material, its preparation and application, especially the preparation of a functionally responsive material with volume change into an oriented superfine fiber material with a telescopic function. Background technique [0002] Natural muscle can directly convert chemical energy into mechanical energy isothermally and efficiently. Its high efficiency, no noise, no pollution, small size, flexible structure distributed direct drive and special servo performance are very attractive, so it has become a dream of imitation. Object. For this reason, people have developed a functional polymer material that has the above-mentioned characteristics similar to natural muscles-artificial muscle polymer material AMP (artificial muscle polymer). [0003] Artificial muscle polymer materials are mainly divided into chemical-mechanical and electrochemical-mechanical artificial muscle polymer materials. These artificial musc...

Claims

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Application Information

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IPC IPC(8): A61L27/14D01D5/00
Inventor 张继中
Owner SOUTHEAST UNIV
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