Silica gel-graphene-liquid metallic composite and preparation method thereof

A liquid metal and composite material technology, which is applied in the field of silica gel graphene liquid metal composite material and its preparation, can solve the problems of increasing cost and affecting the performance of silica gel, and achieves the effects of improving plasticity, excellent mechanical properties and easy operation.

Inactive Publication Date: 2018-11-16
SHANDONG LIANXING ENERGY GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The filling of these traditional thermally conductive fillers has many disadvantages, such as the need for a high filling amount to achieve relatively high thermal conductivity, which seriously affects the performance of the subsequent use of silica gel, and the high filling amount also increases the cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of preparation method of silica gel graphene liquid metal composite material is as follows:

[0024] First prepare fluorinated graphene: add graphene oxide into deionized water, and ultrasonically treat for 2 hours to obtain graphene oxide aqueous solution; add graphene oxide aqueous solution into a hydrothermal kettle with Teflon lining, and then add fluorinating agent, React at 150°C for 20 hours. After the reaction, cool to room temperature, filter, wash the filter cake with deionized water until neutral, and dry to obtain fluorinated graphene.

[0025] 70 parts by weight of liquid metal gallium and 5 parts by weight of urea-formaldehyde were added to 35 parts by weight of absolute ethanol, and ultrasonically treated for 1 hour at an ultrasonic frequency of 53 kHz and an ultrasonic power of 180 W to obtain a uniformly dispersed liquid metal suspension.

[0026] Add 15 parts by weight of fluorinated graphene and 7 parts by weight of carbon nanotubes into a ball...

Embodiment 2

[0029] A kind of preparation method of silica gel graphene liquid metal composite material is as follows:

[0030] First prepare fluorinated graphene: add graphene oxide into deionized water, and ultrasonically treat it for 2.5 hours to obtain graphene oxide aqueous solution; add graphene oxide aqueous solution into a hydrothermal kettle lined with polytetrafluoroethylene, and then add fluorinating agent , reacted at 200°C for 22 hours, cooled to room temperature after the reaction, filtered, washed the filter cake with deionized water until neutral, and dried to obtain fluorinated graphene.

[0031] Add 60 parts by weight of liquid metal gallium-tin alloy and 6 parts by weight of urea-formaldehyde into 50 parts by weight of absolute ethanol, and perform ultrasonic treatment for 2 hours at an ultrasonic frequency of 53 kHz and an ultrasonic power of 180 W to obtain a uniformly dispersed liquid metal suspension.

[0032] Add 20 parts by weight of fluorinated graphene and 6 part...

Embodiment 3

[0035] A kind of preparation method of silica gel graphene liquid metal composite material is as follows:

[0036] First prepare fluorinated graphene: add graphene oxide into deionized water, and ultrasonically treat for 3 hours to obtain a graphene oxide aqueous solution; add the graphene oxide aqueous solution into a hydrothermal kettle lined with polytetrafluoroethylene, and then add a fluorinating agent, React at 100°C for 25 hours, cool to room temperature after the reaction, filter, wash the filter cake with deionized water until neutral, and dry to obtain fluorinated graphene.

[0037] Add 50 parts by weight of liquid metal gallium-indium alloy and 8 parts by weight of urea-formaldehyde to 40 parts by weight of absolute ethanol, and perform ultrasonic treatment for 1.5 hours at an ultrasonic frequency of 53 kHz and an ultrasonic power of 180 W to obtain a uniformly dispersed liquid metal suspension.

[0038] Add 18 parts by weight of fluorinated graphene and 5 parts by ...

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PUM

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Abstract

The invention relates to a silica gel-graphene-liquid metallic composite and a preparation method thereof. The silica gel-graphene-liquid metal metallic composite is prepared from the following raw materials in parts by weight: 80-110 parts of liquid silica gel, 10-20 parts of fluorinated graphene, 50-70 parts of liquid metal, 5-10 parts of carbon nano-tubes, 5-8 parts of urea formaldehyde, 30-50parts of absolute ethyl alcohol and 0.5-1 part of a dispersion agent. According to the silica gel-graphene-liquid metallic composite, the plasticity of the liquid metal can be effectively improved, and the fluorinated graphene and the carbon nano-tubes are added, so that the material is endowed with excellent mechanical performance and heat-conducting performance, and the preparation technology issimple, convenient, green and easy to operate.

Description

technical field [0001] The invention belongs to the field of graphene composite materials, in particular to a silica gel graphene liquid metal composite material and a preparation method thereof. Background technique [0002] Due to its own special microstructure, liquid metal has excellent performance such as high strength, good scratch resistance, high gloss, etc., which meets the requirements for the use of structural parts of 3C electronic products, and has great application potential and market development prospects . Although liquid metal has many excellent properties due to its special structure; but some of its own weaknesses are also very obvious. Liquid metal material has a defect similar to glass material - brittleness, which greatly reduces its plasticity, which also limits it. practical application. [0003] Thermally conductive silica gel is evenly filled in the polymer matrix material with thermally conductive fillers to improve its thermal conductivity. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L61/24C08K9/00C08K3/04C08K3/08
CPCC08K2201/011C08L83/04C08L61/24C08K9/00C08K3/042C08K3/041C08K3/08
Inventor 车春玲
Owner SHANDONG LIANXING ENERGY GRP CO LTD
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