Carbon nano-tube/heat conduction silicone grease composite material and preparation method thereof

A carbon nanotube and thermally conductive silicone grease technology, which is applied in the field of carbon nanotube/thermally conductive silicone grease composite materials and their preparation, can solve problems such as rare research on thermally conductive silicone grease, etc. good mechanical properties

Inactive Publication Date: 2017-04-19
DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the above prior art that the thermal conductivity of thermal grease can be improved by adding carbon nanotubes, but there are few studies on the relationship between the performance of thermal grease itself and carbon nanotubes

Method used

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  • Carbon nano-tube/heat conduction silicone grease composite material and preparation method thereof
  • Carbon nano-tube/heat conduction silicone grease composite material and preparation method thereof
  • Carbon nano-tube/heat conduction silicone grease composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A carbon nanotube / thermally conductive silicone grease composite material, the mass ratio of carbon nanotubes and thermally conductive silicone grease is 0.01:1, the amount of each component in the thermally conductive silicone grease, in percentage terms, includes methyl silicone oil 14wt%, nitrided 56wt% of aluminum, 23wt% of silicon carbide, 7wt% of nano silver wire and 20wt% of dispersant.

[0031] The specific preparation method is:

[0032] (1) The multi-walled carbon nanotubes with a tube diameter of 10nm and a tube length of 0.5μm are pulverized and loosened by ball milling and high-speed jet milling to obtain pretreated multi-walled carbon nanotubes, and then the material-liquid ratio is 1g:60ml , put the multi-walled carbon nanotubes in a mixed solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 2:1, ultrasonically treat for 30 minutes, condense and reflux for 4 hours, take it out, wash until neutral, and vacuum dry at 10...

Embodiment 2

[0036]A carbon nanotube / thermally conductive silicone grease composite material, the mass ratio of carbon nanotubes and thermally conductive silicone grease is 0.1:1, and the consumption of each component in the thermally conductive silicone grease, by percentage, includes methyl silicone oil 14wt%, nitrided 50wt% of aluminum, 30wt% of silicon carbide, 6wt% of nano silver wire and 22wt% of dispersant.

[0037] The specific preparation method is:

[0038] (1) The multi-walled carbon nanotubes with a tube diameter of 50nm and a tube length of 100μm are pulverized and loosened by ball milling and high-speed jet milling to obtain pretreated multi-walled carbon nanotubes, and then the material-liquid ratio is 1g:80ml, The multi-walled carbon nanotubes were placed in a mixed solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1, ultrasonically treated for 30 minutes, condensed and refluxed for 4 hours, taken out, washed until neutral, and vac...

Embodiment 3

[0042] A carbon nanotube / thermally conductive silicone grease composite material, the mass ratio of carbon nanotubes and thermally conductive silicone grease is 0.05:1, and the consumption of each component in the thermally conductive silicone grease, by percentage, includes methyl silicone oil 14wt%, nitrided 40wt% aluminum, 38wt% silicon carbide, 8wt% silver nano wire and 24wt% dispersant.

[0043] The specific preparation method is:

[0044] (1) The multi-walled carbon nanotubes with a tube diameter of 20nm and a tube length of 10μm are pulverized and loosened by ball milling and high-speed jet mill to obtain pretreated multi-walled carbon nanotubes, and then the material-liquid ratio is 1g:70ml, The multi-walled carbon nanotubes were placed in a mixed solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 2.5:1, ultrasonically treated for 30 minutes, condensed and refluxed for 4 hours, taken out, washed until neutral, and vacuum-dried at...

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Abstract

The present invention provides a carbon nano-tube/heat conduction silicone grease composite material and a preparation method thereof. The carbon nano-tube/heat conduction silicone grease composite material comprises carbon nano-tubes and a heat conduction silicone grease, wherein the heat conduction silicone grease comprises 10-15 wt% of methyl silicone oil, 35-60 wt% of aluminum nitride, 20-40 wt% of silicon carbide, 5-9 wt% of nanometer silver wire, and 20-30 wt% of a dispersant, and a mass ratio of the carbon nano-tubes to the heat conduction silicone grease is 0.01-0.1:1. The concrete preparation method comprises: adding the heat conduction silicone grease into the mixed solution of chloroform and ethanol, stirring until uniformly mixing, adding the carbon nano-tubes being subjected to acidification and esterification modification treatment, uniformly mixing to obtain a mixed slurry, carrying out low-temperature and low-speed ultrasonic treatment on the mixed slurry, taking out, drying in a blasting drying oven until the solvent is completely evaporated, and cooling to a room temperature to obtain the product. According to the present invention, the preparation method has advantages of simpleness, strong operability, high performance price ratio and good practicability, and is suitable for large-scale industrial production, and the prepared composite material has advantages of good heat dissipation, good heat resistance, good sealing property and good mechanical performance, and can be used for power transmission and transformation lines.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a carbon nanotube / thermal conductive silicone grease composite material and a preparation method thereof. Background technique [0002] With the development of modern science and technology, electronic products are becoming more dense, miniaturized, and highly efficient. However, during the use of electronic products, a large amount of heat energy will inevitably be difficult to volatilize, which seriously affects the reliability and service life of electronic products. Thermally conductive silicone grease is the most commonly used thermal interface material. A paste containing silicone oil has good thermal conductivity, good sealing performance, and is convenient and easy to apply. The thermal conductivity and sealing performance of different components of thermally conductive silicone grease are also good. different. The traditional thermal grease is ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/10C09K5/14
CPCC09K5/10C09K5/14
Inventor 李风浪李舒歆
Owner DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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