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Sheath-core graphene/alginic acid electroconductive composite fiber and preparation method thereof

A technology of conductive composite fibers and graphene, which is applied in the manufacture of conductive/antistatic filaments, chemical characteristics of fibers, and conjugated synthetic polymer man-made filaments, etc., to achieve the effects of improving electrical conductivity, expanding application fields, and simple and convenient production methods.

Inactive Publication Date: 2018-11-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This study started with the coagulation bath, and added polyionic liquid and graphene as the secondary coagulation bath. At present, polyionic liquid and graphene are added to the secondary coagulation bath to form skin-core graphene / alginic acid fibers. Research has not yet been reported

Method used

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  • Sheath-core graphene/alginic acid electroconductive composite fiber and preparation method thereof
  • Sheath-core graphene/alginic acid electroconductive composite fiber and preparation method thereof
  • Sheath-core graphene/alginic acid electroconductive composite fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A skin-core graphene / alginic acid conductive composite fiber, comprising an alginic acid core layer and a graphene / polyionic liquid skin layer coated on the alginic acid core layer, with a resistivity of 1.6194Ω·cm.

[0044] The preparation method of the skin-core type graphene / alginic acid conductive composite fiber with excellent electrical conductivity is as follows:

[0045] Step a: Dissolve 3g of sodium alginate in 97mL of water, and let stand for 24 hours for defoaming;

[0046] Step b: Dissolve 60mg of polyionic liquid PIL-Cl in 60mL of water, then add 600mg of graphene, stir and sonicate for 2h until the graphene is completely dissolved;

[0047] Step c: dissolving 40g of calcium chloride in 960mL of water to prepare an aqueous solution of calcium chloride;

[0048] Step d: Extrude the sodium alginate aqueous solution through a spinneret hole with a diameter of 0.9 mm at a flow rate of 1.2 m / min until the calcium chloride aqueous solution solidifies for 10 seco...

Embodiment 2

[0052] A skin-core graphene / alginic acid conductive composite fiber with excellent electrical conductivity, with a resistivity of 1.6313Ω·cm.

[0053] The preparation method of the skin-core type graphene / alginic acid conductive composite fiber with excellent electrical conductivity is as follows:

[0054] Step a: Dissolve 2.5g of sodium alginate in 97.5mL of water, and let stand for 36 hours for defoaming;

[0055] Step b: Dissolve 65mg of polyionic liquid PIL-Cl in 60mL of water, then add 700mg of graphene, stir and sonicate for 2h until the graphene is completely dissolved;

[0056] Step c: Dissolve 35g of calcium chloride in 965mL of water;

[0057] Step d: Extrude the sodium alginate aqueous solution through a spinneret hole with a diameter of 0.8 mm at a flow rate of 1.3 m / min until the calcium chloride aqueous solution solidifies for 10 seconds, and take it out and wind it at a rate of 1.7 m / min;

[0058] Step e: placing the wound fiber in a graphene / polyionic liquid ...

Embodiment 3

[0061] A skin-core graphene / alginic acid conductive composite fiber with excellent electrical conductivity, with a resistivity of 1.6506Ω·cm.

[0062] The preparation method of the skin-core type graphene / alginic acid conductive composite fiber with excellent electrical conductivity is as follows:

[0063] Step a: Dissolve 3.5g of sodium alginate in 96.5mL of water, and let stand for 24 hours for defoaming;

[0064] Step b: Dissolve 50mg of polyionic liquid PIL-C1 in 60mL of water, then add 300mg of graphene, stir and sonicate for 2h until the graphene is completely dissolved;

[0065] Step c: Dissolve 30g calcium chloride in 970mL water;

[0066] Step d: Extrude the sodium alginate aqueous solution through a spinneret hole with a diameter of 0.6 mm at a flow rate of 1.4 m / min until the calcium chloride aqueous solution solidifies for 8 seconds, and take it out and wind it at a rate of 1.8 m / min;

[0067] Step e: Place the wound fiber in the graphene / polyionic liquid mixed s...

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Abstract

The invention provides a sheath-core graphene / alginic acid electroconductive composite fiber and a preparation method thereof. The sheath-core graphene / alginic acid electroconductive composite fiber is characterized by comprising an alginic acid core and a graphene / polyion liquid sheath layer covering the alginic acid core, wherein the structural formula of the polyion liquid is shown in the specification, and n is 10-50. In the sheath-core graphene / alginic acid electroconductive composite fiber, the chemical structure of alginic acid fiber in the core is not damaged, but the conductivity is greatly enhanced, and reduction of the mechanical property is not obvious, thereby effectively expanding the application field of alginic acid fiber.

Description

technical field [0001] The invention belongs to the field of alginic acid composite material and its preparation, and in particular relates to an alginic acid / polyionic liquid / graphene composite fiber and a preparation method thereof. Background technique [0002] Seaweed is a degradable and renewable resource. my country's seaweed reserves are very rich, and the production of alginate has always been in the forefront of the world. The sodium salt of alginic acid is the main raw material of seaweed fiber. Sodium alginate consists of β-D-mannuronic acid (M unit) and α-L-guluronic acid (G unit) relying on β-1,4-glucoside Bonded and composed of GM, MM and GG segments in different proportions, the molecular formula is (C 6 h 7 NaO 6 ) x . The sodium salt of alginic acid is soluble in water, adding Cu to the aqueous solution of sodium alginate 2+ , Zn 2+ , Ca 2+ After waiting for divalent cations, sodium alginate will complex with these divalent metal ions to form an ioni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/18D01F8/14D01F1/09
CPCD01F1/09D01F8/14D01F8/18
Inventor 夏于旻付兴柱梁源刘洁汪菁晶江依静张雯雯丁凤霞郭子贤王燕萍倪建华王依民何勇
Owner DONGHUA UNIV
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