Heat conducting and storing graphene sizing phase-change material and preparation method thereof

A phase-change material, graphene technology, applied in the field of thermally conductive materials, can solve problems such as strong safety, low thermal conductivity, energy storage, and lower temperature of electronic products, and achieve the effect of flexible application form and good thermal conductivity

Inactive Publication Date: 2018-09-21
苏州矽美科导热科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the design of the invention is to supplement the existing phase change materials for heat conduction and heat dissipation in order to solve the problems of potential safety hazards caused by leakage and strong corrosion in liquid state, high packaging requirements, easy aging, and low thermal conductivity and energy storage. The technical solution for the preparation and production of variable materials, we have developed and proposed a heat-conducting heat-storage graphene shaped phase-change material and its preparation method, which has changed the traditional way of cooling electronic products, and changed the way of heat dissipation of ordinary electronic products to electronic The heat of the product undergoes phase change energy storage first, and then conducts heat conduction, thereby reducing the temperature of electronic products; it also effectively improves the leakage problem of traditional phase change materials when phase changes occur

Method used

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  • Heat conducting and storing graphene sizing phase-change material and preparation method thereof
  • Heat conducting and storing graphene sizing phase-change material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] This embodiment provides a preparation process of a heat conduction heat storage graphene shaped phase change material, including the following process steps:

[0036] Step 1): Add 66g of graphene powder into a reactor equipped with deionized water, ultrasonically stir to make it evenly dispersed, and configure it into a graphene solution;

[0037] Step 2): the reactor is placed in an ice-water bath, and adding mass concentration to the reactor is 98% H 2 SO 4 , and potassium nitrate solution, stirred until completely dissolved, and kept at 85°C for 15 minutes;

[0038] Step 3): Then add 2.5 g of potassium permanganate with a particle size below the micron level, and then stir the reactor at slightly higher than normal temperature (25-35° C.) for 3 hours;

[0039] Step 4): Take out the reactor, cool it down, then add 3g of hydrogen peroxide dropwise under the condition of uninterrupted stirring, and separate the layers after standing for 8h;

[0040]Step 5): Pour off...

Embodiment 2

[0044] This embodiment provides a preparation process of a heat conduction heat storage graphene shaped phase change material, including the following process steps:

[0045] Step 1): Add 70g of graphene powder into a reactor equipped with deionized water, ultrasonically stir to make it evenly dispersed, and configure it into a graphene solution;

[0046] Step 2): the reactor is placed in an ice-water bath, and adding mass concentration to the reactor is 98% H 2 SO 4 , and sodium nitrate solution, stirred until completely dissolved, and kept at 90°C for 20 minutes;

[0047] Step 3): Then add 3 g of potassium permanganate with a particle size below the micron level, and then stir the reactor at slightly higher than normal temperature (25-35° C.) for 3.5 hours;

[0048] Step 4): Take out the reactor, cool it down, and then add 4.8g of hydrogen peroxide dropwise under continuous stirring, and let it stand for 8 hours to separate layers;

[0049] Step 5): Pour off the upper lay...

Embodiment 3

[0053] This embodiment provides a preparation process of a heat conduction heat storage graphene shaped phase change material, including the following process steps:

[0054] Step 1): Add 64g of graphene powder into a reactor equipped with deionized water, ultrasonically stir to make it evenly dispersed, and configure graphene solution;

[0055] Step 2): the reactor is placed in an ice-water bath, and adding mass concentration to the reactor is 98% H 2 SO 4 , and sodium sulfate solution, stirred until completely dissolved, and kept at 88°C for 18 minutes;

[0056] Step 3): Then add 3 g of potassium permanganate with a particle size below the micron level, and then stir the reactor at a temperature slightly higher than normal temperature (25-35°C) for 4 hours;

[0057] Step 4): Take out the reactor, cool it down, and then add 4.8g of hydrogen peroxide dropwise under continuous stirring, and let it stand for 8 hours to separate layers;

[0058] Step 5): Pour off the upper lay...

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Abstract

The invention discloses a heat conducting and storing graphene sizing phase-change material and a preparation method thereof, and relates to the technical field of heat conducting materials. The heatconducting and storing graphene sizing phase-change material comprises the following steps that graphene powder is added into a reactor with deionized water to prepare a graphene solution, the reactoris placed into an ice water bath, H2SO4 with the mass concentration being 98%, a saline solution and potassium permanganate are added into the reactor, after the certain operation, a proper amount ofhydrogen peroxide is dropwise added, and a graphene oxide solution is obtained; dimethyl vinyl silicone rubber, heat conducting filler, crosslinking agent, coupling agent, platinum catalyst and dispersing agent are added into a vacuum kneading machine, the graphene oxide solution is poured into the vacuum kneading machine to be kneaded, thermal treatment is performed in the specific environment,and then the graphene sizing phase-change material is obtained; the heat conducting and storing graphene sizing phase-change material has the natural physical state temperature regulating characteristics and flexibility of various phase-change materials and can be applied in the fields of thermal interface material and electronic component cooling and heat dissipation, medical apparatuses and instruments, protective clothing and the like.

Description

technical field [0001] The invention relates to the technical field of heat-conducting materials, more specifically, to a heat-conducting heat-storage graphene shaped phase change material and a preparation method thereof. Background technique [0002] As a new energy-saving and environmentally friendly material, phase change materials can be used in passive solar houses, industrial waste heat recovery and utilization, thermal protection and heat storage of electronic products, intelligent temperature-regulating fibers, energy storage and temperature-regulating building materials and other fields. Phase change materials can be divided into high temperature phase change materials (phase change temperature greater than 150°C) and medium and low temperature phase change materials (phase change temperature less than 150°C) according to the temperature used. High temperature phase change materials include molten salts, metal alloys and other inorganic materials. This kind of phas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 张亮刘成彬
Owner 苏州矽美科导热科技有限公司
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