Preparation method of cobalt-nickel alloy particle hydrophilic carbon cloth composite material with corn cob-like heterostructure

A heterogeneous structure, cobalt-nickel alloy technology, applied in metal material coating process, liquid chemical plating, coating, etc., can solve the problem of inability to meet the requirements of high-efficiency wave-absorbing materials, the mismatch of nickel-cobalt alloy electromagnetic parameters, and the inability to meet Lightweight requirements and other issues, to achieve the effect of easy control of wave absorption performance, excellent electromagnetic wave absorption performance, and thin matching thickness

Pending Publication Date: 2022-04-29
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nickel-cobalt alloys have the following two disadvantages as electromagnetic wave absorbing materials: firstly, nickel-cobalt alloys have high density and cannot meet the requirements of lightweight; secondly, the electromagnetic parameters of nickel-cobalt alloys often do not match, resulting in poor wave-absorbing properties
These shortcomings make it unable to meet the requirements of high-efficiency absorbing materials

Method used

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  • Preparation method of cobalt-nickel alloy particle hydrophilic carbon cloth composite material with corn cob-like heterostructure
  • Preparation method of cobalt-nickel alloy particle hydrophilic carbon cloth composite material with corn cob-like heterostructure
  • Preparation method of cobalt-nickel alloy particle hydrophilic carbon cloth composite material with corn cob-like heterostructure

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preparation example Construction

[0044] A method for preparing a cobalt-nickel alloy particle hydrophilic carbon cloth composite material with a corn cob heterostructure, the preparation method comprising the following steps:

[0045] Step 1: Mix 7.5mL deionized water and 7.5mL absolute ethanol to obtain a mixed solution.

[0046]Step 2: adding nickel salt (one or more of nickel nitrate, nickel chloride, nickel sulfate) and cobalt salt (one or more of cobalt nitrate, cobalt chloride, cobalt sulfate) to the mixture Magnetic stirring was carried out in the solution for 30-90 min to obtain solution A.

[0047] Step 3: adding the hydrophilic carbon cloth to the solution A and standing for 6-24 hours to obtain a nickel-cobalt salt solution containing the hydrophilic carbon cloth;

[0048] Step 4: Stir 5mL of sodium hydroxide solution and 5mL of hydrazine hydrate for 30-120min to obtain solution B;

[0049] Step 5: While adding the solution B dropwise to the nickel-cobalt salt solution containing hydrophilic carb...

Embodiment 1

[0056] This implementation case shows a preparation method of a cobalt-nickel alloy particle hydrophilic carbon cloth composite material with a corn cob heterogeneous structure according to the following steps:

[0057] Step 1: Mix 7.5mL deionized water and 7.5mL absolute ethanol to obtain a mixed solution.

[0058] Step 2: Add 1.5 mmol of nickel chloride and 1.5 mmol of cobalt chloride into the mixed solution and perform mechanical stirring for 30 min to obtain solution A.

[0059] Step 3: adding the hydrophilic carbon cloth into the solution A and standing still for 6 hours to obtain a nickel-cobalt salt solution containing the hydrophilic carbon cloth;

[0060] Step 4: 5mL of 1mol / L sodium hydroxide solution and 5mL of 50wt% hydrazine hydrate were magnetically stirred for 30min to obtain solution B;

[0061] Step 5: While adding the solution B dropwise to the nickel-cobalt salt solution containing hydrophilic carbon cloth, stirring the nickel-cobalt salt solution containin...

Embodiment 2

[0065] This implementation case shows a preparation method of a cobalt-nickel alloy particle hydrophilic carbon cloth composite material with a corn cob heterogeneous structure according to the following steps:

[0066] Step 1: Mix 7.5mL deionized water and 7.5mL absolute ethanol to obtain a mixed solution.

[0067] Step 2: Add 1.8 mmol nickel nitrate and 1.2 mmol cobalt nitrate to the mixed solution and perform magnetic stirring for 90 min to obtain solution A.

[0068] Step 3: adding the hydrophilic carbon cloth into the solution A and standing still for 18 hours to obtain a nickel-cobalt salt solution containing the hydrophilic carbon cloth;

[0069] Step 4: 5mL of 3mol / L sodium hydroxide solution and 5mL of 50wt% hydrazine hydrate were magnetically stirred for 90min to obtain solution B;

[0070] Step 5: While adding the solution B dropwise to the nickel-cobalt salt solution containing hydrophilic carbon cloth, stirring the nickel-cobalt salt solution containing hydrophil...

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Abstract

The invention discloses a preparation method of a cobalt-nickel alloy particle hydrophilic carbon cloth composite material with a corn cob-like heterostructure, which comprises the following steps: by taking nickel chloride (nickel nitrate and nickel sulfate) and cobalt chloride (cobalt nitrate and cobalt sulfate) as metal salts, hydrazine hydrate as a reducing agent and sodium hydroxide, deionized water and absolute ethyl alcohol as a mixed solvent, preparing the cobalt-nickel alloy particle hydrophilic carbon cloth composite material with the corn cob-like heterostructure through an in-situ hydrothermal method; the nickel-cobalt alloy and hydrophilic carbon cloth flexible electromagnetic wave absorption composite material is prepared; the preparation method is green, environment-friendly, free of toxic and harmful by-products and simple; the preparation method is easy to operate, and the prepared flexible composite material has efficient electromagnetic wave absorption performance.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic wave absorption composite materials, and in particular relates to a preparation method of a cobalt-nickel alloy particle hydrophilic carbon cloth composite material with a heterogeneous structure similar to corn cobs. Background technique [0002] With the rapid development of electronic industry and information communication, electromagnetic radiation has become a serious environmental pollution problem. In order to solve the increasingly serious problem of electromagnetic wave pollution, electromagnetic wave absorbing materials that can convert electromagnetic wave energy into heat energy and other forms of energy have been extensively studied. Therefore, in recent years, scientists have devoted themselves to exploring high-efficiency electromagnetic wave absorbing materials with strong absorption, wide absorption bandwidth and low thickness. [0003] Nickel-cobalt alloys have been wide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/50H01Q17/00
CPCC23C18/50C23C18/1639H01Q17/00
Inventor 田恐虎陈志鸿张超朱金波潘育松黄亚男刘晓薇
Owner ANHUI UNIV OF SCI & TECH
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