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Macromolecular material additive with electromagnetic shielding function and preparation method thereof

A polymer material and electromagnetic shielding technology, applied in the field of new materials, can solve problems such as uneven shielding effect, poor compatibility between metals and polymers, electromagnetic pollution, etc., to achieve improved effect, good electromagnetic shielding effect, and improved stability Effect

Active Publication Date: 2019-03-22
DECORIA MATERIALS JIANGSU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excessive electromagnetic radiation causes electromagnetic pollution
[0003] In order to reduce the impact of electromagnetic pollution on the human body or equipment, isolation is often used to reduce electromagnetic pollution. Nowadays, isolation is often used to isolate electromagnetic waves, which requires materials with good electromagnetic shielding. In polymer electromagnetic shielding materials, often The shielding effect of the material is improved by adding metal powder to the material, but the compatibility between metal and polymer is poor, resulting in uneven shielding effect

Method used

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  • Macromolecular material additive with electromagnetic shielding function and preparation method thereof
  • Macromolecular material additive with electromagnetic shielding function and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A method for preparing an additive for polymer materials with electromagnetic shielding effect, comprising the following steps:

[0026] (1) Mix attapulgite and bentonite evenly at a weight ratio of 4:1, and bake the mixture of attapulgite and bentonite in an oven at 100°C for 2 hours to obtain a mixed filler;

[0027] (2) Soak the graphene in hydrochloric acid with a mass fraction of 10% for 1-2 hours, and then wash it with acetone and absolute ethanol respectively;

[0028] (3), mix the graphene processed in step (2) with the mixed filler obtained in step (1) in a weight ratio of 5:1, add 2% of the mixture weight of silane coupling agent, 3.5% of the mixture weight of Acetone, stirring at a stirring speed of 1600r / min for 20-30min, rotary evaporation to remove acetone;

[0029] (4) Mix the product obtained in step (3) with nano-copper powder, stir under the protection of an inert gas, and use ultrasonic treatment for 40 minutes, and then bake at 100°C for 1.5 hours t...

Embodiment 2

[0040] Compared with Example 1, the attapulgite was not modified.

Embodiment 3

[0042] Compared with Example 1, the bentonite was not modified.

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Abstract

The invention relates to a macromolecular material additive with an electromagnetic shielding function and a preparation method thereof. The preparation method comprises the following steps of (1) preparing a mixed filler; (2) soaking graphene by hydrochloric acid of 10% mass fraction for 1 to 2 h, and respectively cleaning by acetone and anhydrous ethanol; (3) mixing the treated graphene and themixed filler obtained in step (1) according to a weight ratio of (5 to 6):1; (4) mixing the product obtained in step (3) and nanocopper powder, stirring under the protection of inert gas, treating for30 to 40 min by ultrasonic waves, and baking for 1 to 2 h at the temperature of 100 to 120 DEG C, so as to obtain the additive. The macromolecular material additive with the electromagnetic shieldingfunction has the advantages that the electromagnetic shielding effect is good; the macromolecular material additive can be added into multiple types of macromolecular materials, so that the application range of the additive is increased; by mixing the graphene and the nanocopper powder, the electromagnetic shielding effect is effectively improved.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to an additive for polymer materials with electromagnetic shielding effect and a preparation method thereof. Background technique [0002] Electromagnetic pollution refers to natural and artificial interference of various electromagnetic waves and harmful electromagnetic radiation. Due to the development of radio, television, and microwave technology, the power of radio frequency equipment has doubled, and the electromagnetic radiation on the ground has increased significantly, which has reached the level of direct threat to human health. The interaction between the electric field and the magnetic field produces electromagnetic waves, and the phenomenon of electromagnetic waves being emitted or sinking into the air is called electromagnetic radiation. Excessive electromagnetic radiation causes electromagnetic pollution. [0003] In order to reduce the impact of electromagn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/06C08K9/02C08K9/04C08K3/34C08K3/04C08K3/08
CPCC08K3/042C08K3/08C08K3/346C08K9/02C08K9/08C08K13/06C08K2003/085C08K2201/011C08K2201/014
Inventor 郭平
Owner DECORIA MATERIALS JIANGSU CO LTD
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