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High-molecular nano-fiber net structure binding material and preparation method thereof

A technology of bonding material and network structure, which is applied in the field of polymer nanofiber network structure bonding material and its preparation, and achieves the effects of good shape, enhanced electrostatic force and improved electrical conductivity

Active Publication Date: 2019-01-04
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant literature report on the preparation of EVA nanofibers by electrospinning and its use in the field of adhesives.

Method used

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  • High-molecular nano-fiber net structure binding material and preparation method thereof
  • High-molecular nano-fiber net structure binding material and preparation method thereof
  • High-molecular nano-fiber net structure binding material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A certain amount of lithium chloride nanoparticles was weighed and crushed in an agate mortar, then placed in a muffle furnace, dried at 400°C for 4 hours, taken out, and cooled to room temperature in a desiccator. Use an electronic balance to accurately weigh 1.4g of EVA resin particles, 13.02g of CHCl 3 and 5.58g THF in a conical flask of appropriate size, add the rotor, place it on a constant temperature magnetic stirrer, stir for 15min at a temperature of 40°C until the solute is completely dissolved, then add 0.04g of chlorine to the mixed solution lithium nanoparticles, thereby preparing a composite spinning solution with a mass fraction of EVA of 7%, wherein CHCl 3 The mass ratio of THF and THF is 7:3, and the mass fraction of lithium chloride is 0.2%.

[0030] Perform electrospinning on the above spinning solution, set the spinning parameters as voltage 15kV, spinning distance 15cm, flow rate 0.3mL / h, temperature 25°C, spinning time 5h, nanofibers are received ...

Embodiment 2

[0032] A certain amount of lithium chloride nanoparticles was weighed and crushed in an agate mortar, then placed in a muffle furnace, dried at 400°C for 4 hours, taken out, and cooled to room temperature in a desiccator. Use an electronic balance to accurately weigh 1.2g of EVA resin particles, 13.16g of CHCl 3 and 5.64g THF in a conical flask of appropriate size, add the rotor, place it on a constant temperature magnetic stirrer, stir for 15min at a temperature of 40°C until the solute is completely dissolved, then add 0.06g of chlorine to the mixed solution lithium nanoparticles, thereby preparing a composite spinning solution with a mass fraction of EVA of 6%, wherein CHCl 3 The mass ratio of THF and THF is 7:3, and the mass fraction of lithium chloride is 0.3%.

[0033] Perform electrospinning on the above spinning solution, set the spinning parameters as voltage 17kV, spinning distance 16cm, flow rate 0.5mL / h, temperature 30°C, spinning time 6h, nanofibers are received ...

Embodiment 3

[0035] A certain amount of lithium chloride nanoparticles was weighed and crushed in an agate mortar, then placed in a muffle furnace, dried at 400°C for 4 hours, taken out, and cooled to room temperature in a desiccator. Use an electronic balance to accurately weigh 2g of EVA resin particles, 12.60g of CHCl 3 and 5.40g THF in a conical flask of appropriate size, add the rotor, place it on a constant temperature magnetic stirrer, stir for 15min at a temperature of 40°C until the solute is completely dissolved, then add 0.04g of chlorine to the mixed solution lithium nanoparticles, thereby preparing a composite spinning solution with a mass fraction of EVA of 10%, wherein CHCl 3 The mass ratio of THF and THF is 7:3, and the mass fraction of lithium chloride is 0.2%.

[0036] Perform electrospinning on the above spinning solution, set the spinning parameters as voltage 20kV, spinning distance 18cm, flow rate 0.8mL / h, temperature 28°C, spinning time 4h, nanofibers are received o...

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Abstract

The invention discloses a high-molecular nano-fiber net structure binding material and preparation method thereof. The method includes the steps: firstly, dissolving EVA (ethylene-vinyl acetate copolymer) resin in solvents in a stirring manner to prepare 4-10% of EVA electrostatic spinning fluid; secondly, performing electrostatic spinning by the electrostatic spinning fluid to prepare an EVA nano-fiber membrane which can serve as a binding material. According to the binding material, bonded materials can be effectively and uniformly bound, the diameter of a nano-fiber is small, specific surface area is large, distribution is uniform, so that bonding sites of the material are small, and bonding areas are uniformly distributed, so that uniform compactness and strong performance of the material are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of macromolecule nanomaterials, and in particular relates to a polymer nanofiber network structure adhesive material and a preparation method thereof. Background technique [0002] Nanofibers have attracted much attention due to their large specific surface area and high porosity. Electrospinning technology is currently one of the main ways to continuously prepare nanofibers. The main principle is that under the action of a high-voltage electrostatic field, a potential difference is formed between the capillary spinneret and the grounding device, and the spinning droplets (polymer solution or melt) on the surface of the capillary spinneret are under high-voltage electrostatic force, self Under the action of viscoelastic force and surface tension, a Taylor cone is formed. When the electrostatic force increases to a certain extent, a jet flow is formed at the spinneret hole, and the jet flow is accelerated in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/10C09J7/30C09J123/08B01D39/16D04H1/728D04H1/4291D01D5/00
CPCB01D39/1623C09J123/08C09J2423/04C09J7/10C09J7/30C09J2301/202C09J2301/312C09J2301/414D01D5/003D01D5/0069D04H1/4291D04H1/728
Inventor 武丁胜李曼凤权魏安静李家莉胡金燕李鑫
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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