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Preparation method of different stack layer carbon fiber cloth/TPU composite material with high electromagnetic shielding performance

A carbon fiber cloth and electromagnetic shielding technology, which is applied in the field of preparation of different stacked layers of carbon fiber cloth/TPU composite materials, can solve the problems of poor alignment of conductive fillers, limited electromagnetic shielding performance, inconsistent axial orientation, etc. Excellent shielding performance, excellent electromagnetic shielding performance, low cost effect

Active Publication Date: 2019-11-15
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing studies have disclosed the technical scheme of preparing TPU electromagnetic shielding composite materials by melting and blending electromagnetic shielding thermoplastic polyurethane (TPU) surface-modified conductive materials or with conductive fillers, but the inventors have found that: whether it is melt blending or surface modification, there are The poor consistency of the conductive filler arrangement direction, especially the inconsistent orientation in the axial direction, and the poor dispersion limit the improvement of its electromagnetic shielding performance

Method used

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  • Preparation method of different stack layer carbon fiber cloth/TPU composite material with high electromagnetic shielding performance
  • Preparation method of different stack layer carbon fiber cloth/TPU composite material with high electromagnetic shielding performance
  • Preparation method of different stack layer carbon fiber cloth/TPU composite material with high electromagnetic shielding performance

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The first step is to place the carbon fiber cloth in an ultrasonic cleaning machine for a small cleaning, and the cleaning time is 2 hours.

[0058] In the second step, place the cleaned carbon fiber cloth in a beaker filled with a mixture of absolute ethanol and silane coupling agent KH-550 (the mass ratio of absolute ethanol to silane coupling agent KH-550 is 4:1) Surface modification of carbon fiber cloth was carried out, and the beaker was placed in a constant temperature water bath at 80°C for 2 hours.

[0059] The third step is to take out the surface-modified carbon fiber cloth, wash it with distilled water, and then place it in a drying oven for drying treatment. The drying temperature is 100°C and the drying time is 2 hours. Then take it out and seal it.

[0060] For the fourth cloth, place the TPU particles in a drying oven for 2 hours for drying treatment, and the temperature is set at 100°C.

[0061] The fifth step is to fill the mold with TPU granules, an...

Embodiment 2

[0065] The first step is to place the carbon fiber cloth in an ultrasonic cleaning machine for a small cleaning, and the cleaning time is 2 hours.

[0066] In the second step, place the cleaned carbon fiber cloth in a beaker filled with a mixture of absolute ethanol and silane coupling agent KH-550 (the mass ratio of absolute ethanol to silane coupling agent KH-550 is 4:1) Surface modification of carbon fiber cloth was carried out, and the beaker was placed in a constant temperature water bath at 80°C for 2 hours.

[0067] The third step is to take out the surface-modified carbon fiber cloth, wash it with distilled water, and then place it in a drying oven for drying treatment. The drying temperature is 100°C and the drying time is 2 hours. Then take it out and seal it.

[0068] For the fourth cloth, place the TPU particles in a drying oven for 2 hours for drying treatment, and the temperature is set at 100°C.

[0069] The fifth step is to fill the mold with TPU granules, an...

Embodiment 3

[0072] The first step is to place the carbon fiber cloth in an ultrasonic cleaning machine for a small cleaning, and the cleaning time is 2 hours.

[0073] In the second step, place the cleaned carbon fiber cloth in a beaker filled with a mixture of absolute ethanol and silane coupling agent KH-550 (the mass ratio of absolute ethanol to silane coupling agent KH-550 is 4:1) Surface modification of carbon fiber cloth was carried out, and the beaker was placed in a constant temperature water bath at 80°C for 2 hours.

[0074] The third step is to take out the surface-modified carbon fiber cloth, wash it with distilled water, and then place it in a drying oven for drying treatment. The drying temperature is 100°C and the drying time is 2 hours. Then take it out and seal it.

[0075] For the fourth cloth, place the TPU particles in a drying oven for 2 hours for drying treatment, and the temperature is set at 100°C.

[0076] The fifth step is to fill the mold with TPU granules, an...

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Abstract

The invention relates to a preparation method of a different stack layer carbon fiber cloth / TPU composite material with a high electromagnetic shielding performance. According to the preparation method, a silane coupling agent KH-550 is used to modify carbon fiber cloth, TPU particles are melted, cooled, and moulded to produce a TPU plate, and finally, a small pressure is applied to prepare the carbon fiber cloth / TPU composite material at a high temperature, and at the same time, the different stack layer carbon fiber cloth / TPU composite material is prepared. The obtained product has the characteristics of low cost, high strength, and excellent electromagnetic shielding performance.

Description

technical field [0001] The invention belongs to the field of composite material preparation, and in particular relates to a preparation method of different stacked carbon fiber cloth / TPU composite materials with high electromagnetic shielding performance. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the rapid development of modern science and technology, wireless communication equipment has caused serious electromagnetic pollution to the surrounding environment, and the problem of electromagnetic pollution has become increasingly prominent. Metal materials and metal matrix composites are common electromagnetic shielding materials in the market, but they have the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/12B32B9/04B32B27/40B32B9/00B29C43/20
CPCB32B27/12B32B5/02B32B5/16B32B9/048B29C43/203B29L2009/00B32B2262/106B32B2307/54B32B2307/212B32B2264/0292B32B2250/42
Inventor 史振宇段宁民王兆辉袭建人杨晓涛王继来
Owner SHANDONG UNIV
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