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Preparation method of temperature-sensitive variable resistor conductive fiber

A conductive fiber, temperature-sensitive technology, used in conductive/antistatic filament manufacturing, fiber chemical characteristics, conjugated synthetic polymer rayon, etc. problem, to achieve the effect of good antibacterial activity, dense structure, and improved mechanical properties

Active Publication Date: 2019-02-19
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 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 cannot change the resistance with temperature changes. , cannot be used for 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

[0034] (1) Preparation of polyvinyl alcohol aqueous solution

[0035]Take polyvinyl alcohol (PVA) powder (PVA2488, alcoholysis degree 88%) and add it to deionized water with a mass fraction of 3%, and mechanically stir it for 3 hours in an oil bath environment at 70°C to make the white polyvinyl alcohol powder completely After dissolving, let it stand still, and after the foam completely disappears, a clear and transparent aqueous solution is obtained, which is ready for use.

[0036] (2) Preparation of graphene by ball milling method

[0037] 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 is 48h 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;

[0038] (3) Preparation of chitos...

Embodiment 2

[0049] (1) Preparation of polyvinyl alcohol aqueous solution

[0050] Take polyvinyl alcohol (PVA) powder (PVA2488, alcoholysis degree 88%) and add it to deionized water with a mass fraction of 5%, and mechanically stir it for 3 hours in an oil bath environment at 70°C to make the white polyvinyl alcohol powder completely Stand still after dissolving, and after the foam is completely eliminated, a clear and transparent aqueous solution is obtained, which is ready for use;

[0051] (2) Preparation of graphene by ball milling method

[0052] 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 is 48h 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;

[0053] (3) Preparation of chitosan s...

Embodiment 3

[0064] (1) Preparation of polyvinyl alcohol aqueous solution

[0065] Take polyvinyl alcohol (PVA) powder (PVA2488, alcoholysis degree 88%) and add it to deionized water with a mass fraction of 3-7%, and mechanically stir for 3 hours in an oil bath environment at 70°C to make white polyvinyl alcohol After the powder is completely dissolved, let it stand still, and after the foam is completely eliminated, a clear and transparent aqueous solution is obtained, which is ready for use;

[0066] (2) Preparation of graphene by ball milling method

[0067] 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 is 48h 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;

[0068] (3) Preparation of c...

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Abstract

The invention relates to the field of intelligent materials and discloses a preparation method of temperature-sensitive variable resistor conductive fiber. The preparation method includes: preparing temperature-sensitive fiber through a solution mixing method, and using polyvinyl alcohol and chitosan as components of temperature-sensitive fiber spinning dope and graphene as a conductive material to obtain the conductive fiber of a temperature-sensitive variable resistor. The temperature-sensitive variable resistor conductive fiber can be applied in wide fields like medical treatment fever monitoring, intelligent wearable equipment human body heat data monitoring and analyzing, heat-source device fever monitoring and tropical fish breeding water temperature monitoring.

Description

technical field [0001] The invention relates to the field of intelligent materials, in particular to a method for preparing a temperature-sensitive variable resistance conductive fiber. Background technique [0002] Smart materials are a new type of functional materials that can perceive external stimuli, judge and process them appropriately, and can be executed by themselves. 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 development of material science. [0003] Fiber is widely used and can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/09D01F8/18D01F8/10
CPCD01F1/09D01F8/10D01F8/18
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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