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Intelligent energy-saving graphene oxide composite paper and preparation method thereof

A graphene composite, graphene technology, applied in chemical instruments and methods, special paper, paper and other directions, can solve the problems of easy leakage, easy aging, high packaging requirements, achieve good flexibility, prevent leakage, improve thermal conductivity, etc. performance effect

Active Publication Date: 2012-06-20
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its own shortcomings such as easy leakage, high packaging requirements, and easy aging limit its application in the field of heat dissipation of electronic devices.
On the other hand, low thermal conductivity is another technical bottleneck that limits the large-scale application of organic phase change heat storage materials.
Therefore, combining the advantages of the two phase changes, people have developed shape-fixed phase-change materials, which have improved the performance of phase-change heat storage materials to a certain extent, but traditional shape-fixed phase-change materials still have problems in packaging and other aspects in practical applications. The shortcomings of the above two systems cannot be fundamentally changed

Method used

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  • Intelligent energy-saving graphene oxide composite paper and preparation method thereof
  • Intelligent energy-saving graphene oxide composite paper and preparation method thereof
  • Intelligent energy-saving graphene oxide composite paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In this example, the intelligent energy-saving graphene oxide composite paper is obtained by layer-by-layer self-assembly of graphene oxide and organic phase change material PEG2000, wherein the mass of organic phase change material PEG2000 is 20 mg, and the mass of graphene oxide is 20 mg.

[0037] In the present embodiment, the intelligent energy-saving graphene oxide composite paper is prepared according to the following method:

[0038] Put 0.8g of graphite in 200mL of concentrated sulfuric acid with a mass concentration of 98%, 1gK 2 S 2 o 8 and 1gP 2 o 5 The mixed solution was reacted at 85-90°C for 4.5 hours. After the reaction, the reaction solution was diluted with 200mL deionized water, and graphite oxide was obtained after successively filtering, washing and vacuum drying at 60°C;

[0039] Add 20-25mL of concentrated sulfuric acid with a mass concentration of 98% and 1gKMnO to 50mg of graphite oxide 4 , reacted at 30-40°C for 2 hours, then added 20mL dei...

Embodiment 2

[0043] The preparation method of this example is the same as that of Example 1, except that the organic phase change material is PEG400, and the addition amounts are 5 mg, 15 mg, 20 mg and 113 mg respectively.

Embodiment 3

[0045] The preparation method of this example is the same as that of Example 1, except that the organic phase change material is PEG600, and the addition amounts are 5 mg, 15 mg, 17 mg and 20 mg respectively.

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Abstract

The invention discloses intelligent energy-saving graphene oxide composite paper and a preparation method thereof, wherein the intelligent energy-saving graphene oxide composite paper is obtained by layer-by-layer self-assembly of graphene oxide and an organic phase change material; the addition amount of the organic phase change material is 1-85% of the mass of the intelligent energy-saving graphene oxide composite paper; and the rest is graphene oxide. The graphene oxide composite paper provided in the invention can prevent the organic phase change material from leakage effectively and improve heat conductivity; and the method is simple in operation and low in cost, can be finished in a common chemical laboratory, and is easy to popularize. The intelligent energy-saving graphene oxide composite paper prepared by the method has strong flexibility and variable phase change temperature and meets different application requirements, such as thermal interface materials of electronic devices, etc., and the material has a wide application prospect.

Description

1. Technical field [0001] The invention relates to a preparation method of nanomaterials, in particular to an intelligent energy-saving graphene oxide composite paper and a preparation method thereof. 2. Background technology [0002] Energy and the environment are two of the most challenging issues facing mankind in the 21st century. In the strategic deployment of energy development formulated by countries around the world, the development of renewable new energy and the rational use of existing non-renewable energy occupy the same position. Saving the existing non-renewable energy is the core of the rational use of energy, and the level of energy saving is an important symbol to measure the advanced level of a country's science, technology and industry. [0003] Efficient utilization of heat energy is one of the key issues in energy saving and consumption reduction. This is because thermal energy is the most widely used form of energy utilization. In the utilization of v...

Claims

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Application Information

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IPC IPC(8): D21H27/26B32B9/04C09K5/06
CPCY02P20/141
Inventor 张忠平张淑东王振洋
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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