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Preparation method of MXene/sodium alginate composite fiber

A composite fiber, sodium alginate technology, applied in fiber processing, alginate rayon, conductive/antistatic filament manufacturing, etc., can solve the problems of complex process equipment, difficult processing and molding, low MXene loading, etc. , to achieve the effect of simple process equipment, low viscosity requirements and low cost

Pending Publication Date: 2021-12-31
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of MXene / sodium alginate composite fiber in order to solve the problems of difficult processing and molding, low MXene load, and complicated process equipment in the preparation process of MXene fiber. Preparation of MXene / SA composite fibers by submerged spinning method with molecular sodium alginate as interlayer binder

Method used

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  • Preparation method of MXene/sodium alginate composite fiber
  • Preparation method of MXene/sodium alginate composite fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for preparing MXene / SA composite fibers by immersion spinning method is carried out according to the following steps:

[0030] Step 1. Preparation of MXene / SA composite solution: 6g SA was added to 100ml of MXene solution with a concentration of 20mg / ml, and stirred at 60°C for 6h to obtain MXene / SA composite solution;

[0031] Step 2, the preparation of coagulation bath: the massfraction of 3600ml is 5% CaCl 2 Add the solution into 600ml of isopropanol and stir until there is no obvious layering;

[0032] Step 3. Preparation of MXene / SA composite fiber: Inject the MXene / SA composite solution into the spinning equipment for spinning, and at the same time use the coagulation bath collection device to collect the fibers, use ethanol and deionized water to wash and dry to obtain MXene / SA SA composite fiber.

[0033] The tensile strength of the MXene / SA composite fiber obtained in this example is 192Mpa, which is better than the mechanical strength of the MXene f...

Embodiment 2

[0035] A method for preparing MXene / SA composite fibers by immersion spinning method is carried out according to the following steps:

[0036] Step 1. Preparation of MXene / SA composite solution: 1g SA was added to 200ml of MXene solution with a concentration of 30mg / ml, and stirred at 25°C for 24h to obtain MXene / SA composite solution;

[0037] Step 2, the preparation of coagulation bath: the massfraction of 1200ml is 1% CaCl 2 Add the solution into 1200ml of isopropanol and stir until there is no obvious layering;

[0038] Step 3. Preparation of MXene / SA composite fiber: Inject the MXene / SA composite solution into the spinning equipment for spinning, and at the same time use the coagulation bath collection device to collect the fibers, use ethanol and deionized water to wash and dry to obtain MXene / SA SA composite fiber.

[0039] The tensile strength of the MXene / SA composite fiber obtained in this example is 50Mpa, which is better than the mechanical strength of the MXene ...

Embodiment 3

[0041] A method for preparing MXene / SA composite fibers by immersion spinning method is carried out according to the following steps:

[0042]Step 1. Preparation of MXene / SA composite solution: 2g SA was added to 100ml of MXene solution with a concentration of 20mg / ml, and stirred at 35°C for 18h to obtain MXene / SA composite solution;

[0043] Step 2, the preparation of coagulation bath: the mass fraction of 2400ml is 5% CaCl 2 Add the solution into 600ml of isopropanol and stir until there is no obvious layering;

[0044] Step 3. Preparation of MXene / SA composite fiber: Inject the MXene / SA composite solution into the spinning equipment for spinning, and at the same time use the coagulation bath collection device to collect the fibers, use ethanol and deionized water to wash and dry to obtain MXene / SA SA composite fiber.

[0045] The tensile strength of the MXene / SA composite fiber obtained in this embodiment is 169Mpa, as shown in the attached figure 2 As shown, this valu...

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Abstract

The invention discloses a preparation method of MXene / sodium alginate composite fiber, and aims to solve the problems of low MXene loading capacity, complex process equipment, incapability of quick preparing in a large scale and the like in an existing preparation method of MXene fiber. The preparation method comprises the following steps of adding SA into an MXene colloidal solution, and magnetically stirring to obtain an MXene / SA composite solution; adding anhydrous CaCl2 into deionized water, magnetically stirring until the anhydrous CaCl2 is completely dissolved, adding isopropanol into the deionized water, and magnetically stirring until the solution is not obviously layered to obtain a coagulating bath; and finally, injecting the MXene / SA composite solution into thread throwing equipment for thread throwing, meanwhile, collecting fiber through a coagulating bath collecting device, and carrying out cleaning and drying to obtain the MXene / SA composite fiber. The surface of the composite fiber has an obvious groove and wrinkle structure, the structure is beneficial to storage and transfer of charge and reflection of electromagnetic waves, and the composite fiber has wide application prospects in the fields of supercapacitors, sensors and electromagnetic shielding.

Description

technical field [0001] The invention belongs to the technical field of MXene fiber preparation, and in particular relates to a preparation method of MXene / sodium alginate composite fiber. Background technique [0002] In recent years, MXene, a new member of the family of two-dimensional nanomaterials, has attracted widespread attention due to its unique structure and excellent multifunctional properties. MXene is a transition metal carbide or / and nitride with the general structural formula M n+1 x n T x , where M stands for early transition metals (Ti, Zr…), X stands for carbon and / or nitrogen, T x Representing terminal groups (such as -O, -OH, -F), this type of two-dimensional nanomaterials has all the basic properties required for efficient electromagnetic shielding materials, including light weight, large specific surface area, and excellent electrical conductivity. , The oxygen-containing groups on the surface of MXene make it easy to process, and it can be assembled...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/04D01F1/09D01D5/18D01D5/06
CPCD01F9/04D01F1/09D01D5/18D01D5/06
Inventor 王超赵国欣隋超赫晓东苗琳琳赵予顺李钧姣
Owner HARBIN INST OF TECH
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