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Intelligent color-changing heat-dissipating hydrogel and application thereof

A technology of discoloration and dispersion and hydrogel, which is applied in the direction of modification using liquid cooling, cooling/ventilation/heating transformation, etc., which can solve the problems of inability to directly monitor and reflect the working state of the radiator, unfavorable high-efficiency heat dissipation effect, etc. Status visualization, good recyclability, and the effect of reducing operating temperature

Pending Publication Date: 2022-05-27
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current gel radiators such as polyacrylamide hydrogel, polyacrylic acid hydrogel, polyvinyl alcohol hydrogel, etc., are invariable during use, and there will be no visual intelligent response, and they cannot be directly monitored. and reflect the working status of the radiator, which is extremely detrimental to maintaining high-efficiency heat dissipation

Method used

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  • Intelligent color-changing heat-dissipating hydrogel and application thereof
  • Intelligent color-changing heat-dissipating hydrogel and application thereof
  • Intelligent color-changing heat-dissipating hydrogel and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: a kind of preparation method of intelligent discoloration viscous self-hygroscopic hydrogel

[0035] The specific experimental conditions are as follows:

[0036] Experimental condition 1:

[0037] 1) Add 1 g of acrylamide to 5 mL of deionized water, and stir until uniform with a magnetic stirrer to obtain an acrylamide precursor solution;

[0038] 2) 10 mg of ammonium persulfate and 1 mg of N,N'-methylenebisacrylamide were added to the acrylamide precursor solution, and the solution was stirred until uniform using a magnetic stirrer;

[0039] 3) Using tetramethylethylenediamine as a catalyst, add 25 μL of tetramethylethylenediamine to the uniform solution obtained in step 2), stir for 1 to 2 minutes until the solution is uniform, pour the obtained solution into a mold, and solidify 4 hours to obtain polyacrylamide hydrogel;

[0040] 4) Soak the polyacrylamide hydrogel obtained in step 3) in deionized water for 12 hours to fully swell to an equilibrium ...

Embodiment 2

[0050] Example 2: Tensile Testing

[0051] The intelligent discoloration viscous self-hygroscopic hydrogel of the present invention has abundant hydrogen bonds, sufficient cross-linking points and suitable polymer chain length, and has excellent tensile properties during practical application.

[0052] The tensile properties test method provided by the present embodiment is as follows:

[0053] 1) Cut the gel obtained in Example 1 into a dumbbell shape;

[0054] 2) Use a tensile testing machine to test its tensile properties, and the tensile speed is set to 100 mm / min.

[0055] The performance test of the intelligent discoloration viscous self-hygroscopic hydrogel in the present embodiment is as follows: figure 1 For the tensile properties test results, the figure shows that the maximum breaking stress of the hydrogel increases from 33.48 kPa to 71.37 kPa when the cross-linking agent is reduced from 10 mg to 1 mg.

[0056] Apparently, the above-mentioned embodiments are onl...

Embodiment 3

[0057] Example 3: Hygroscopicity Test

[0058] The intelligent discoloration viscous self-hygroscopic hydrogel of the present invention can absorb a certain amount of moisture in the air after standing for a certain period of time under the experimental conditions described below.

[0059] like figure 2 Shown in this embodiment is a moisture absorption test device based on an intelligent discoloration viscous self-hygroscopic hydrogel. The device includes a computer 1, an electronic balance 2, a sample to be tested 3, a humidification pipe 4, and a humidifier 5 from left to right. The computer 1 and the electronic balance 2 are used to record the quality change of the sample in real time, the sample to be tested 3 is inside the electronic balance 2, the electronic balance 2 is a closed environment, and the humidification pipeline 4 and the humidifier 5 are used to control the ambient humidity in the balance. .

[0060] like image 3 The hygroscopicity test of this example ...

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Abstract

The invention discloses an intelligent color-changing heat-dissipating hydrogel, which is an intelligent color-changing viscous self-moisture-absorbing hydrogel containing a water-sensitive color changing agent and a moisture absorbent and having a large amount of dynamic and non-dynamic covalent bonds, takes polyacrylamide as a basic network structure, and has the advantages of low cost, simple preparation method and uniform polymerization degree. The obtained intelligent color-changing heat dissipation hydrogel can be used for heat dissipation and thermal protection of devices, can be directly or indirectly coupled and decoupled with different electronic device interfaces, can reduce the working temperature of the electronic devices, improve the working humidity of the electronic devices, prolong the service life of the electronic devices and improve the efficiency of the electronic devices, and is suitable for industrial production. The moisture in the environment can be recovered and self-recovered, the color change can be intelligently generated along with the self moisture condition, and the device has the characteristics of intelligent response, visual working state, convenience in use, reusability and the like, can be used for large-scale production, and provides a new thought for device heat dissipation and moisture utilization.

Description

Technical field: [0001] The invention relates to the field of heat dissipation and thermal protection of electronic devices, in particular to an intelligent discoloration heat dissipation hydrogel and an application thereof. Background technique: [0002] Electronic devices are used more and more in daily life. Due to the large amount of waste heat generated in the process of use, it not only accelerates the trend of global warming but also is not conducive to the service life of electronic devices themselves, which directly leads to greatly reduced efficiency of electronic devices and improves electronic devices. How to dissipate heat of products and improve the service life of electronic products has become a current research hotspot. As a new type of cooling method, gel cooling technology has attracted the research enthusiasm of a large number of researchers due to its flexibility, high efficiency, low cost and simple preparation method. [0003] The current gel radiator...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/26C08K3/16C08J3/075H05K7/20
CPCC08J3/075H05K7/2029C08J2333/26C08K3/16C08K2201/014
Inventor 苗蕾穆晓江周建华王鹏飞陈欢杨婷婷
Owner GUILIN UNIV OF ELECTRONIC TECH
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