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A kind of preparation method of temperature-sensitive variable resistance conductive fiber

A conductive fiber and temperature-sensitive technology, applied in the manufacture of conductive/antistatic filaments, fiber chemical characteristics, textiles and papermaking, etc., can solve problems such as fixed conductivity, single composite material, and change in resistance to achieve good antibacterial properties Effects of activity, improvement of mechanical properties, and compact structure

Active Publication Date: 2021-06-01
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 method for preparing temperature-sensitive variable resistance conductive fibers. This method prepares temperature-sensitive fibers through a solution mixing method, wherein polyvinyl alcohol and chitosan are used as temperature-sensitive fibers for spinning The components of the stock solution, and then use graphene as the conductive material to obtain a conductive fiber with temperature-sensitive variable resistance. The temperature-sensitive variable resistance conductive fiber of the present invention can be applied to a wide range of fields such as medical fever monitoring, intelligent wearable equipment human body thermal data monitoring and analysis, heat source device heating 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 be...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(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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