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A kind of graphene carbon nanotube composite material and preparation method thereof

A composite material, graphene carbon technology, applied in chemical instruments and methods, synthetic resin layered products, coatings, etc. The measured performance is good, the creativity is full, and the flexibility is good.

Active Publication Date: 2020-12-25
国宏中晶集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a graphene carbon nanotube composite material and its preparation method, to solve the problem that the multi-layer composite material proposed in the background technology cannot be closely combined with each other when shielding, and will be detached or voids or voids due to various reasons. question

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  • A kind of graphene carbon nanotube composite material and preparation method thereof

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preparation example Construction

[0026] The present invention also provides a method for preparing a graphene carbon nanotube composite material, which is used to prepare the aforementioned graphene carbon nanotube composite material, comprising the following steps.

[0027]Step 1: Preparation of two carbon nanotube layers / polyaniline layer double-layer composite structures: making carbon nanotube dispersion liquid by ultrasonic, the ultrasonic parameter frequency ≥ 25KHz, power density=emission power (W) / emission area (cm2 ) ≥ 0.4W / cm2, and the duration is not less than 3min; prepare a uniform and dense filter membrane on the suction filter funnel, and use excess amount of the aforementioned carbon nanotube dispersion to filter, so that the carbon nanotube fragments in the carbon nanotube dispersion Precipitate on the filter membrane, use 0.2M sulfuric acid or KOH aqueous solution as the removal solution to repeatedly soak the combination of the filter membrane and the carbon nanotube film for 10-20 times, ea...

Embodiment 2

[0034] In step 1, the ultrasonic parameter frequency is 25KHz, the power density=emission power (W) / emission area (cm2)=0.45W / cm2, and the duration is 4min; use 0.3M sulfuric acid or KOH aqueous solution as the removal solution to repeatedly soak the filter membrane and Combination of carbon nanotube films 20 times, 7 hours each time; put the substrate together in low-temperature decompressed steam of ethanol or isopropanol for at least 3 hours to remove the filter membrane, and vacuum dry for 60 hours at room temperature; in step 2, form 0.7 -0.9mm protective layer, at an ambient temperature of 60°C, nitrogen protection and curing for 2.5 hours; in step 4, prepare a large amount of 22-30mg / ml graphene suspension, and add 10% mass percent concentration to it The PMDS polydimethylsiloxane liquid and the curing agent with a concentration of 0.8-0.9% by mass. Other conditions are with embodiment 1.

[0035] figure 1 The microstructure of the graphene layer 4 in the middle is on...

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Abstract

The invention discloses a graphene and carbon nanotube composite material and a preparation method thereof. The graphene and carbon nanotube composite material comprises a first resin protection layer, a first polyaniline layer, a first carbon nanotube layer, a graphene layer, a second carbon nanotube layer, a second polyaniline layer and a second resin protection layer, wherein the first carbon nanotube layer, the first polyaniline layer and the first resin protection layer are arranged above the graphene layer sequentially; the second carbon nanotube layer, the second polyaniline layer and the second resin protection layer are arranged below the graphene layer sequentially. The graphene and carbon nanotube composite material serving as an electromagnetic shielding material is fold-resistant, good in flexibility, waterproof and resistant to certain temperature; furthermore, the carbon nanotube layers, the second polyaniline layers and the resin protection layers are arranged to two sides sequentially with the graphene layer as a central line, the shielding effects of the front side and the reverse side are equal, and the graphene and carbon nanotube composite material can be applied to various aspects such as protective clothing, face masks, protective plates, protective covers protective curtains and the like.

Description

technical field [0001] The invention relates to the technical field related to graphene, in particular to a graphene carbon nanotube composite material and a preparation method thereof. Background technique [0002] With the rapid development of the modern electronics industry, electronic appliances and radio communications are widely used, and the problem of electromagnetic interference caused by electromagnetic waves is becoming more and more serious. Electromagnetic wave pollution has become another major public hazard after noise pollution, air pollution, water pollution, and solid waste pollution. . Electromagnetic waves will not only interfere with the normal operation of various electronic equipment, threaten the information security of communication equipment, but also cause great harm to human health. At present, the main method to eliminate the hazards of electromagnetic waves is to use electromagnetic shielding materials to shield them. Exploring efficient elect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/28B32B37/00B32B37/24
CPCB32B27/08B32B27/28B32B37/00B32B37/24B32B2037/243B32B2250/24B32B2255/10B32B2255/20B32B2255/24B32B2255/26B32B2255/28B32B2307/212
Inventor 张岩黄甜甜刘波董伟孙涛张斌张丛天苗燕
Owner 国宏中晶集团有限公司
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