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Preparation method for temperature-sensitive variable-resistance fiber modified by silver nanowires and having bactericidal effect

A technology of silver nanowires and sterilization effect, which is applied in the field of preparation of temperature-sensitive variable resistance fibers, can solve the problems of single composite material, fixed electrical conductivity, and cannot be better realized, and achieves improved mechanical properties, excellent electrical conductivity, The effect of good antibacterial activity

Active Publication Date: 2019-01-29
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the existing technology, most of the conductive materials are compounded on ordinary polymer fibers. The composite materials are relatively simple and traditional, and the conductive properties are very fixed. There is no smart material that can respond to external stimuli, and the resistance cannot change with temperature changes. , cannot be used in smart wearable devices, that is, cannot better realize the practical value of smart wearable devices that respond to signals and feedback signals with changes in the outside world

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Preparation of polyethylene glycol aqueous solution

[0041] Take polyethylene glycol (PEG) powder (PEG4000) and add it to deionized water with a mass fraction of 3%, mechanically stir for 3 hours in an oil bath environment at 70°C, and then completely dissolve the white polyethylene glycol powder and let it stand , after the foam is completely eliminated, a clear and transparent aqueous solution is obtained, which is ready for use;

[0042] (2) Preparation of graphene by ball milling method

[0043] Add 20g of graphite powder and 400g of dry ice into the ball mill tank, control the rotation speed of the rotating tray to 3200rpm, and the ball milling time to 40h to obtain dark black graphene. Open the tank and take out the graphene and add hydrochloric acid to clean it to remove excess impurities in the product. Then use deionized water Washed three times, freeze-dried to obtain solid graphene;

[0044] (3) Preparation of chitosan solution

[0045] Take by weighi...

Embodiment 2

[0056] (1) Preparation of polyethylene glycol aqueous solution

[0057] Take polyethylene glycol (PEG) powder (PEG4000) and add it to deionized water with a mass fraction of 5%, mechanically stir for 3 hours in an oil bath environment at 70°C, and then completely dissolve the white polyethylene glycol powder and let it stand , after the foam is completely eliminated, a clear and transparent aqueous solution is obtained, which is ready for use;

[0058] (2) Preparation of graphene by ball milling method

[0059] Add 20g of graphite powder and 400g of dry ice into the ball milling tank, control the rotation speed of the rotating tray to 3000rpm, and the ball milling time to 45h to obtain dark black graphene. Open the tank and take out the graphene and add hydrochloric acid to clean it to remove excess impurities in the product. Then use deionized water Washed three times, freeze-dried to obtain solid graphene;

[0060] (3) Preparation of chitosan solution

[0061] Take by wei...

Embodiment 3

[0072] (1) Preparation of polyethylene glycol aqueous solution

[0073] Take polyethylene glycol (PEG) powder (PEG4000) and add it to deionized water with a mass fraction of 7%, mechanically stir for 3 hours in an oil bath environment at 70°C, and then completely dissolve the white polyethylene glycol powder and let it stand , after the foam is completely eliminated, a clear and transparent aqueous solution is obtained, which is ready for use;

[0074] (2) Preparation of graphene by ball milling method

[0075] Add 20g of graphite powder and 400g of dry ice to the ball mill tank, control the rotation speed of the rotating tray to 3000rpm, and the ball mill time to 50h to obtain dark black graphene. Open the tank and take out the graphene and add hydrochloric acid to clean it to remove excess impurities in the product. Then use deionized water Washed three times, freeze-dried to obtain solid graphene;

[0076] (3) Preparation of chitosan solution

[0077] Take by weighing th...

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Abstract

The invention discloses a preparation method for a temperature-sensitive variable-resistance fiber modified by silver nanowires and having bactericidal effect, belonging to the field of intelligent materials. According to the invention, a temperature-sensitive fiber is prepared by using a solution mixing method, wherein polyethylene glycol and chitosan are used as the components of a spinning solution for the temperature-sensitive fiber; and then, graphene is used as a conductive material to prepare the temperature-sensitive variable-resistance conductive fiber. The temperature-sensitive variable-resistance conductive fiber of the invention can be applied to fields in hot and humid environments, e.g., medical fever monitoring of human bodies and temperature monitoring of tropical fish culturing water.

Description

technical field [0001] The invention relates to the field of smart materials, in particular to a method for preparing a temperature-sensitive variable resistance fiber modified with silver nanowires and having a bactericidal effect. Background technique [0002] Intelligent material (Intelligent material) is a new type of functional material that can perceive external stimuli, judge and process it appropriately, and can be executed by itself. Smart materials are the fourth generation of materials following natural materials, synthetic polymer materials, and artificially designed materials. They are one of the important directions for the development of modern high-tech new materials. The boundaries between materials and structural materials are gradually disappearing, realizing functionalization of structures and diversification of functions. Scientists predict that the development and large-scale application of smart materials will lead to a major revolution in the devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/83D06M10/02D01F8/16D01F8/18D01F1/09D01F9/08D06M101/30D06M101/10
CPCD01F1/09D01F8/16D01F8/18D01F9/08D06M10/025D06M11/83D06M16/00D06M2101/10D06M2101/30
Inventor 万军民帅卢屹峥胡智文王秉彭志勤
Owner ZHEJIANG SCI-TECH UNIV
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