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A kind of skin-core type graphene/alginic acid conductive composite fiber and preparation method thereof

A conductive composite fiber, graphene technology, applied in the direction of conductive/antistatic filament manufacturing, fiber chemical characteristics, conjugated synthetic polymer rayon, etc., to achieve the effect of simple manufacturing method, expanding application fields, and improving electrical conductivity

Inactive Publication Date: 2020-12-04
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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  • A kind of skin-core type graphene/alginic acid conductive composite fiber and preparation method thereof
  • A kind of skin-core type graphene/alginic acid conductive composite fiber and preparation method thereof
  • A kind of skin-core type graphene/alginic acid conductive composite fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0044] The preparation method of the sheath-core graphene / alginic acid conductive composite fiber with excellent conductivity comprises the following steps:

[0045] A, dissolving 3g sodium alginate in 97mL water, standing and defoaming for 24h；;

[0046] B, dissolving 60mg of polyionic liquid PIL-Cl in 60mL of water, then adding 600mg of graphene, stirring and ultrasonicating for 2 hours until graphene is completely dissolved;

[0047] C, dissolving 40g of calcium chloride in 960mL of water to prepare calcium chloride aqueous solution;

[0048] D, extrude that sodium alginate aqueous solution from a spinneret with a diameter of 0.9mm at a flow rate of 1.2m / min until the calcium chloride aqueous solution solidifies for 10s, take out and winding at a flow ...

Embodiment 2

[0052] A sheath-core graphene / alginic acid conductive composite fiber with excellent conductivity, its resistivity is 1.6313Ω·cm.

[0053] The preparation method of the sheath-core graphene / alginic acid conductive composite fiber with excellent conductivity comprises the following steps:

[0054] A, dissolving 2.5g sodium alginate in 97.5mL water, standing and defoaming for 36h；;

[0055] B, dissolving 65mg of polyionic liquid PIL-Cl in 60mL of water, then adding 700mg of graphene, stirring and ultrasonicating for 2 hours until graphene is completely dissolved;

[0056] C, dissolving 35g of calcium chloride in 965mL of water;

[0057]D, extrude that sodium alginate aqueous solution from a spinneret with a diameter of 0.8mm at a flow rate of 1.3m / min until the calcium chloride aqueous solution solidifies for 10s, take out and winding at a flow rate of 1.7m / min;

[0058] E, placing the wound fiber in graphene / polyionic liquid mixed solution for secondary solidification for 24h；;

[...

Embodiment 3

[0061] A sheath-core graphene / alginic acid conductive composite fiber with excellent conductivity, its resistivity is 1.6506Ω·cm.

[0062] The preparation method of the sheath-core graphene / alginic acid conductive composite fiber with excellent conductivity comprises the following steps:

[0063] A, dissolving 3.5g sodium alginate in 96.5mL water, standing and defoaming for 24h；;

[0064] B, dissolving 50mg of polyionic liquid PIL-C1 in 60mL of water, then adding 300mg of graphene, stirring and ultrasonicating for 2 hours until graphene is completely dissolved;

[0065] C, dissolving 30g of calcium chloride in 970mL of water;

[0066] D, extrude that sodium alginate aqueous solution from a spinneret hole with a diameter of 0.6mm at a flow rate of 1.4m / min until the calcium chloride aqueous solution solidifies for 8s, take out and winding at a speed of 1.8m / min;

[0067] E, placing the wound fiber in graphene / polyionic liquid mixed solution for secondary solidification for 24h；; An...

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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 materials and their preparation, in particular to an alginic acid / polyionic liquid / graphene composite fiber and its preparation method. technical background [0002] Seaweed is a kind of degradable and renewable resource. China has abundant seaweed reserves, and the output of alginate is always in the forefront of the world. Sodium alginate is the main raw material of seaweed fiber. Sodium alginate is a copolymer of β-D- mannuronic acid (M unit) and α-L- guluronic acid (G unit) connected by β-1,4-glycosidic bond 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, and Cu is added into the aqueous solution of alginic acid. 2+ 、Zn 2+ 、Ca 2+ After the divalent cations are equal, sodium alginate will be complexed with these divalent metal ions to form water-insoluble ionic crosslinked hydroge...

Claims

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Application Information

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Patent Type & Authority Patents(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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