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Method for preparing silver nano-wire and graphene-based calcium alginate composite conductive fibers

A composite conductive and silver nanowire technology, which is applied in fiber treatment, alginate artificial filament, wet spinning, etc., can solve the problems of low conductivity and processability, complex conductive composite fiber technology, etc., and achieve good results. The effect of universality, good electrical conductivity and processability

Active Publication Date: 2018-05-25
韩金玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention: due to the complicated process of preparing conductive composite fibers at present, the performance of the obtained conductive composite fibers, especially the low conductivity and processability, the present invention proposes a brand-new conductive composite fiber system, through Through continuous improvement and optimization of the process, a composite conductive fiber of silver nanowires and graphene-based calcium alginate was prepared

Method used

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  • Method for preparing silver nano-wire and graphene-based calcium alginate composite conductive fibers
  • Method for preparing silver nano-wire and graphene-based calcium alginate composite conductive fibers
  • Method for preparing silver nano-wire and graphene-based calcium alginate composite conductive fibers

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Experimental program
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Effect test

Embodiment 1

[0027] First, prepare 0.5 mg / mL silver nanowire alcohol solution and graphene aqueous solution; secondly, use 1.5% sodium alginate and 30% calcium chloride alcohol solution as the preparation of calcium alginate precursor, using Double syringe pumps injected sodium alginate into the calcium chloride alcohol solution at an injection rate of 5mL / min to obtain calcium alginate microfibers; the calcium alginate microfibers prepared above were immersed in dodecane containing 3% mass concentration Sodium benzene sulfonate solution for 2 hours, so that the fiber surface is positively charged; again, the fiber prepared in the foregoing is added dropwise to the prepared silver nanowire alcohol solution under stirring conditions, and the alcohol of the silver nanowire After the solution is added dropwise, continue to stir for 0.2 hours, then add the aqueous solution of graphene dropwise under stirring conditions, and continue to stir for 0.2 hours; finally, the product can be obtained by...

Embodiment 2

[0029] First, prepare 1.0 mg / mL silver nanowire alcohol solution and 0.5 mg / mL graphene aqueous solution; secondly, use 2.5% sodium alginate and 30% calcium chloride alcohol solution as the preparation calcium alginate For the precursor, sodium alginate was injected into the calcium chloride alcohol solution at an injection rate of 5 mL / min using a double syringe pump to obtain calcium alginate microfibers; the calcium alginate microfibers prepared above were immersed in a solution containing 3% Sodium dodecylbenzenesulfonate solution for 2 hours, so that the surface of the fiber is positively charged; again, the fiber prepared in the foregoing is added dropwise to the prepared silver nanowire alcohol solution under the condition of stirring, and the silver After the alcohol solution of the nanowires is added dropwise, continue to stir for 0.2 hours, then add the aqueous solution of graphene dropwise under stirring conditions, and continue to stir for 0.2 hours; finally, the pr...

Embodiment 3

[0031] First, prepare 1.0 mg / mL silver nanowire alcohol solution and 0.5 mg / mL graphene aqueous solution; secondly, use 2.5% sodium alginate and 50% calcium chloride alcohol solution as the preparation calcium alginate Precursor, inject sodium alginate into the calcium chloride alcohol solution at an injection rate of 10mL / min using a double syringe pump to obtain calcium alginate microfibers; immerse the calcium alginate microfibers prepared above into cetyltrimethylammonium bromide solution for 3 hours, so that the surface of the fiber is positively charged; again, the fiber prepared in the foregoing is added dropwise to the prepared silver nanowire alcohol solution under stirring conditions , after the alcohol solution of silver nanowires is added dropwise, continue to stir for 0.5 hours, then add the aqueous solution of graphene dropwise under the condition of stirring, and continue to stir for 0.5 hours; finally, the product can be obtained after centrifugation and washing...

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Abstract

The invention discloses a method for preparing silver nano-wire and graphene-based calcium alginate composite conductive fibers. According to the method disclosed by the invention, sodium alginate micron scale fibers are prepared from by adopting a wet-spinning technology; after the fibers are subjected to surface modification to carry positive charge, the fibers are immersed into a silver nano-wire alcohol solution with negative electricity on the surface, so that one layer of nano silver-wire conductive network structure is formed on the surface of the fibers; finally, one layer of grapheneis adsorbed on the surfaces of the conductive fibers and the stability of the conductive fibers is improved. The invention discloses the preparation method of the composite conductive fibers; the preparation method has the advantages of simple preparation technology and low cost; the conductive fibers can be prepared in a large batch and has an application prospect in the aspects including preparation of microelectronic device circuits, flexible conductors and the like.

Description

technical field [0001] The present application relates to the field of conductive paste, in particular to the technical field of preparation of silver nanowires (Ag NWs) and graphene (Graphene)-based calcium alginate composite conductive fibers. Background technique [0002] At present, there have been extensive researches and applications on the application of various composite conductive fibers. Among them, the most classic conductive composite fiber is made of conductive particles, such as: carbon black, metal particles, conductive fibers, etc. The thermoplastic resin is used as the matrix material of the conductive composite fiber, and the two are combined through spinning technology to form a complete conductive fiber. [0003] In order to obtain composite conductive fibers with better performance, the conductive functional particles must be continuously dispersed in the matrix material. However, there will be some problems in this way, such as: 1. The appropriate ratio...

Claims

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Application Information

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IPC IPC(8): D06M11/83D06M11/74D06M13/256D06M13/463D01F9/04D01D5/06
CPCD01D5/06D01F9/04D06M11/74D06M11/83D06M13/256D06M13/463
Inventor 韩金玲吕振瑞
Owner 韩金玲
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