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Cubic-phase cobalt-nickel alloy nano-cluster-graphene composite material and manufacturing method and purpose thereof

A technology of cobalt-nickel alloy and composite materials, which is applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of small particle size and easy oxidation, and the method is simple and easy to absorb. The effect of good wave performance and cheap and easy-to-obtain raw materials

Inactive Publication Date: 2014-09-17
BEIJING NORMAL UNIVERSITY +1
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for pure metals and alloys, the main difficulty is that they are easily oxidized in air due to the very small particle size

Method used

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  • Cubic-phase cobalt-nickel alloy nano-cluster-graphene composite material and manufacturing method and purpose thereof
  • Cubic-phase cobalt-nickel alloy nano-cluster-graphene composite material and manufacturing method and purpose thereof
  • Cubic-phase cobalt-nickel alloy nano-cluster-graphene composite material and manufacturing method and purpose thereof

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Experimental program
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Effect test

Embodiment 1

[0035] Preparation of raw graphite oxide and composites

[0036] Preparation of graphite oxide

[0037] Graphite oxide was prepared by the modified Hummers method as a raw material for the preparation of cubic cobalt-nickel alloy-graphene composites.

[0038] Weigh 5 grams of graphite powder (Shanghai Yifan Graphite Co., Ltd., AR), 5 grams of NaNO 3 (Xilong Chemical Factory, Shantou City, Guangdong, AR), and 230 ml concentrated H 2 SO 4 (Beijing Chemical Plant, AR), placed in an ice-water bath, slowly added 30 g of KMnO 4 (Tianjin Kemiou Chemical Reagent Development Company, AR), this process takes about 15 minutes.

[0039] Remove the ice-water bath, put it in a 35°C water bath, and slowly add 460 ml of distilled water. During this process for about 30 minutes, the product gradually turns from black to brown.

[0040] Then put it in a 98°C oil bath for 15 minutes.

[0041] After withdrawing from the oil bath, add 1400 ml warm water, stir, add 100 ml H 2 o 2 (Beijing Che...

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Abstract

The invention relates to a cubic-phase cobalt-nickel alloy nano-cluster-graphene composite material and a manufacturing method and purpose of the composite material, and belongs to the field of electromagnetic wave absorption materials. The cubic-phase cobalt-nickel alloy nano-cluster-graphene composite material is manufactured with low cost through a simple and fast thermal decomposition method with the good reduction effect. The composite material is good in wave absorbing property. The manufacturing method comprises the following steps that (a), graphite oxide is added to oleylamine and dispersed; (b), acetylacetone, acetylacetone nickel and octadecylamine are added, mixtures are heated to 110 DEG C to 140 DEG C in the inert protective gas atmosphere and are maintained for 20-40 minutes, and then temperature rises to 230 DEG C to 260 DEG C and is maintained for 1.5-2.5 hours; (c), organic solvents are added to suddenly stop the reaction; (d), a reaction product is separated out; (e), the reaction product is optionally washed and dried.

Description

technical field [0001] The invention relates to the field of electromagnetic wave absorbing materials, in particular to a cubic phase cobalt-nickel alloy nanocluster-graphene composite material, its preparation method and application. Background technique [0002] In recent years, wireless communication technology has developed rapidly in industry, commerce, and military industries, which has brought great convenience to our life, but it has also brought electromagnetic wave hazards. This makes it extremely urgent to prepare materials that can absorb electromagnetic waves and to study devices that can absorb electromagnetic waves. Therefore, research on materials with high absorption capacity, wide absorption range, good oxidation resistance, strong thermal stability, and low density for electromagnetic waves has attracted widespread attention. [0003] Although important progress has been made in the synthesis of magnetic particles, maintaining the stability of magnetic pa...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B82Y40/00B82Y30/00H05K9/00
Inventor 孙根班潘国华马淑兰马腾
Owner BEIJING NORMAL UNIVERSITY
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