Heat-dissipation coating with phase-changing temperature adjusting function and preparing method of heat-dissipation coating

A heat-dissipating coating and temperature-adjusting technology, which is applied in the direction of radiation-absorbing coatings, microsphere preparation, and heat-exchanging materials, can solve the problems of low heat radiation efficiency and poor heat dissipation effect, and achieve excellent performance, good cooling effect, Effect of lowering the internal temperature of the device

Active Publication Date: 2017-11-10
XIAN HIGH VOLTAGE APP RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the effect of foreign heat dissipation coatings is good, the price is about several thousand yuan per kilogram. Although the price of domestic heat dissipation coatings is relatively low, the heat dissipation effect is not good.
In addition, the fillers of most heat-dissipating coatings are only

Method used

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  • Heat-dissipation coating with phase-changing temperature adjusting function and preparing method of heat-dissipation coating
  • Heat-dissipation coating with phase-changing temperature adjusting function and preparing method of heat-dissipation coating

Examples

Experimental program
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Effect test

Embodiment 1

[0041]Dissolve a total of 80g of dispersant in 800g of water, add 200g of wall material monomers styrene and divinylbenzene (mass ratio: 2:1) and 200g of paraffin, raise the temperature until the solids in the system are completely dissolved, and adjust Emulsify the system for 3 hours at the rotational speed of the agitator. After the emulsification process, a calculated amount of oil-soluble initiator was added to the mixture to initiate the polymerization reaction of the system, and the phase change microcapsules were obtained after reacting for 10 h under nitrogen purging. Add 8g of phase change microcapsules and 5g of silicon carbide into 100g of epoxy resin, stir for 2 hours, add 40g of room temperature curing agent and mix evenly to prepare a heat dissipation coating with heat storage and temperature adjustment function. After painting, leave it at room temperature for 24 hours, then it will be surface dry, and it will be dry after 72 hours.

[0042] The differential sc...

Embodiment 2

[0045] Add 150g of wall material monomers styrene and divinylbenzene (mass ratio: 2:1) and 70g of stearic acid and normal long-chain alkanes into the reactor, raise the temperature until the solids in the system are completely dissolved, and then keep warm for later use. After dissolving a total of 10g of dispersant in 1000g of water, pour the mixture obtained in step (a), raise the temperature to 40°C, start the stirrer, adjust the speed to about 100r / min, and emulsify the system for 10 minutes. After the emulsification process, add 1g of oil-soluble initiator to the mixture to initiate the polymerization reaction of the system, adjust the stirrer speed to 150r / min, react for 2h under nitrogen purging, and discharge the material out of the kettle to obtain phase change microcapsules. Add phase-change microcapsules and high-heat radiation materials such as aluminum nitride into epoxy resin, and disperse for 0.5 hours to obtain a heat-dissipating coating with phase-change temper...

Embodiment 3

[0047] Add 300g of wall material monomers styrene and divinylbenzene (mass ratio: 3:1) and 600g of stearic acid into the reaction kettle, raise the temperature until the solids in the system are completely dissolved, and then keep warm for later use. After dissolving a total of 200g of dispersant in 1000g of water, pour the mixture obtained in step (a), raise the temperature to 90°C, start the agitator, adjust the speed to about 2500r / min, and emulsify the system for 80 minutes. After the emulsification process, 15g of oil-soluble initiator was added to the mixture to initiate the polymerization reaction of the system, and the rotation speed of the agitator was adjusted to 1300r / min, and the phase change microcapsules were obtained after reacting for 10h under nitrogen purge. Add phase-change microcapsules and high-heat radiation materials such as beryllium oxide into epoxy resin, and disperse for 4 hours to obtain a heat-dissipating coating with phase-change temperature regula...

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Abstract

The invention relates to a heat-dissipation coating with a phase-changing temperature adjusting function and a preparing method of the heat-dissipation coating. The heat-dissipation coating comprises phase-changing microcapsules, high thermal-radiation materials, epoxy resin and a curing agent, wherein the phase-changing microcapsules account for, by mass, 1%-10% of the epoxy resin, the high thermal-radiation materials account for, by mass, 3%-6% of epoxy resin, and the curing agent accounts for, by mass, 35%-45% of the epoxy resin. The heat-dissipation coating is constituted by the phase-changing microcapsules, the high thermal-radiation materials and epoxy resin, wherein the phase-changing microcapsules are large in latent heat of phase change, resistant to high temperature, environmentally friendly and free of pollution; meanwhile, silicon carbide, beryllium oxide, aluminum nitride and the like have the advantages of being high in thermal radiation capability and good in thermal conductivity, through the combination of both parties, the heat dissipation effect of the epoxy-resin-based heat-dissipation coating can be remarkably improved, and the internal temperature of coated equipment is lowered greatly.

Description

【Technical field】 [0001] The invention belongs to the technical field of paint preparation, and in particular relates to a heat-dissipating paint with a phase change temperature regulation function and a preparation method thereof. 【Background technique】 [0002] In the current field of phase change material encapsulation technology at home and abroad, the capsule wall materials are still dominated by resins such as urea-formaldehyde and melamine-formaldehyde, and such phase change materials containing formaldehyde wall materials will slowly release formaldehyde during use. Meet environmental protection requirements. Moreover, from the domestic research results, there is a common problem that the latent heat value of the microcapsule phase change is low, although the phase change of the capsule can be improved by selecting a core material with a higher phase change enthalpy and increasing the amount of core material. enthalpy, but this also increases production costs. Alth...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/32C09D7/12C08F212/08C08F212/36B01J13/14C09K5/06
CPCB01J13/14C08F212/08C08L2201/08C08L2205/18C09D5/32C09D163/00C09K5/063C08L25/08C08K3/34C08F212/36
Inventor 闵超李西育张东阳
Owner XIAN HIGH VOLTAGE APP RES INST CO LTD
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