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Anisotropic conducting polypropylene composite material and preparation method thereof

A composite material and anisotropic technology, applied in the field of anisotropic conductive polypropylene composite materials and their preparation, can solve problems such as less research and complex production costs, and achieve enhanced electrical conductivity, improved electrical conductivity, and realization of anisotropic conductive properties. heterosexual effect

Active Publication Date: 2019-06-28
龙岩市润峰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process of the existing anisotropic conductive materials, the conductive fibers need to be arranged in advance and then cast into shape; this method is complicated and the production cost is high
[0003] Polypropylene is a kind of thermoplastic resin prepared by polymerization of propylene; it is widely used in household appliances, plastic pipes and other fields; but there are few studies on anisotropic conductive polypropylene composite materials in the existing technology; Anisotropic conductive polypropylene composites are of great significance for broadening the application fields of polypropylene

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 Preparation of anisotropic conductive polypropylene composite material

[0027] (1) Combine dopamine and Fe 3 o 4 The magnetic particles were added to deionized water and ultrasonicated at 25°C for 1.5h; the product was precipitated with excess acetone, and after centrifugal drying, dopamine was loaded with Fe 3 o 4 ;

[0028] In this step, dopamine, Fe 3 o 4 The dosage ratio of magnetic particles and deionized water is 1g:1.5g:15mL; the Fe 3 o 4 The magnetic particles are prepared by the following method: First, prepare ferric chloride solution and ferrous chloride solution, then mix the same amount of ferric chloride solution and ferrous chloride solution, stir them evenly, and transfer them to a hydrothermal kettle , reacted at 230°C for 6h to obtain the Fe 3 o 4 Magnetic particles; the preparation method of the ferric chloride solution is: take ferric chloride hexahydrate and polyethylene glycol 20000 and add them to a mixed solvent composed of...

Embodiment 2

[0034] Embodiment 2 Preparation of anisotropic conductive polypropylene composite material

[0035] (1) Combine dopamine and Fe 3 o 4 The magnetic particles were added to deionized water and sonicated at 30°C for 1 h; the product was precipitated with excess acetone, and after centrifugation and drying, dopamine was loaded with Fe 3 o 4 ;

[0036] In this step, dopamine, Fe 3 o 4 The dosage ratio of magnetic particles and deionized water is 1g:1g:10mL; the Fe 3 o 4 The magnetic particles are prepared by the following method: First, prepare ferric chloride solution and ferrous chloride solution, then mix the same amount of ferric chloride solution and ferrous chloride solution, stir them evenly, and transfer them to a hydrothermal kettle , reacted at 230°C for 6h to obtain the Fe 3 o 4 Magnetic particles; the preparation method of the ferric chloride solution is: take ferric chloride hexahydrate and polyethylene glycol 20000 and add them to a mixed solvent composed of ...

Embodiment 3

[0042] Embodiment 3 Preparation of anisotropic conductive polypropylene composite material

[0043] (1) Combine dopamine and Fe 3 o 4 The magnetic particles were added to deionized water, and ultrasonicated at 20°C for 2 hours; the product was precipitated with excess acetone, and after centrifugal drying, dopamine was loaded with Fe 3 o 4 ;

[0044] In this step, dopamine, Fe 3 o 4 The dosage ratio of magnetic particles and deionized water is 1g:2g:20mL; the Fe 3 o 4 The magnetic particles are prepared by the following method: First, prepare ferric chloride solution and ferrous chloride solution, then mix the same amount of ferric chloride solution and ferrous chloride solution, stir them evenly, and transfer them to a hydrothermal kettle , reacted at 230°C for 6h to obtain the Fe 3 o 4 Magnetic particles; the preparation method of the ferric chloride solution is: take ferric chloride hexahydrate and polyethylene glycol 20000 and add them to a mixed solvent composed ...

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Abstract

The invention relates to the technical field of polypropylene composite materials and in particular discloses an anisotropic conducting polypropylene composite material and a preparation method thereof. The preparation method comprises the following steps: (1) adding dopamine and Fe3O4 magnetic particles into deionized water and ultrasonically treating the mixture for 1-3 hours at 20-30 DEG C; precipitating a product with an organic solvent, and centrifugalizing and drying the precipitate to obtain dopamine-loaded Fe3O4; (2) adding the dopamine-loaded Fe3O4, a multiwall carbon nanotube and a vinyl-vinyl acetate copolymer into an organic solvent to be ultrasonically treated for 1-3 hours, and then removing the organic solvent and pouring the mixture into a film to obtain an EVA / MWNT / Fe3O4 composite film; (3) blending the EVA / MWNT / Fe3O4 composite film with polypropylene and extruding the EVA / MWNT / Fe3O4 composite film to obtain a PP / EVA / MWNT / Fe3O4 composite material strip by injection molding; and (4) putting the PP / EVA / MWNT / Fe3O4 composite material strip into a 20-30 mT magnetic field for 5-15 min at 160-200 DEG C to obtain the anisotropic conducting polypropylene composite material.The anisotropic conducting polypropylene composite material prepared by the method shows an excellent anisotropic conducting property.

Description

technical field [0001] The invention relates to the technical field of polypropylene composite material preparation, in particular to an anisotropic conductive polypropylene composite material and a preparation method thereof. Background technique [0002] Anisotropy means that all or part of the chemical and physical properties of a substance change with the change of direction, showing different properties in different directions. In a specific application process, conductive materials often only need to conduct electricity in a specific direction better than other directions, and this type of material is the so-called anisotropic conductive material. However, in the preparation process of the existing anisotropic conductive materials, the conductive fibers need to be arranged in advance and then cast into shape; this method is complicated and the production cost is high. [0003] Polypropylene is a kind of thermoplastic resin prepared by polymerization of propylene; it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08K9/04C08K3/22C08K3/04C08J5/18C08J3/28
Inventor 尹可阳
Owner 龙岩市润峰科技有限公司
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