A kind of wearable equipment based on composite phase change material and its preparation method

A technology of composite phase change materials and equipment, applied in heat exchange materials, chemical instruments and methods, clothing, etc., can solve the problems of easy-to-leak organic phase change materials such as thermal conductivity and poor encapsulation, and achieve non-corrosive chemical properties, High latent heat of phase change and stable chemical properties

Active Publication Date: 2019-10-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Nowadays, the phase change materials used in textiles are mainly organic phase change materials, but they basically face the problems of poor encapsulation, easy leakage and low thermal conductivity of organic phase change materials

Method used

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  • A kind of wearable equipment based on composite phase change material and its preparation method
  • A kind of wearable equipment based on composite phase change material and its preparation method
  • A kind of wearable equipment based on composite phase change material and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0038] (1) Preparation of composite phase change materials

[0039] Take lauric acid and stearic acid with a mass ratio of 60.3:39.7, add them to a beaker with a total mass of 50 g, put them on a magnetic stirrer with heating function, set the heating temperature to 100 °C, and the speed to 1800 r / min. Until it is completely melted, the eutectic mixture of lauric acid and stearic acid is obtained, and then cooled to room temperature to obtain a composite phase change material.

[0040] (2) Measuring the physical parameters of composite phase change materials

[0041] Using differential scanning calorimeter, protective atmosphere: nitrogen; flow rate: 15ml / min; heating rate: 5K / min, test temperature range 20℃~50℃. Draw the DSC curve of the composite phase change material of lauric acid and stearic acid, and analyze the phase change temperature and latent heat of phase change. The obtained results are t 1 = 34.316°C and H 1 = 189.73 kJ / kg.

[0042] (3) preparation of microca...

Embodiment 2

[0050] (1) Synthesis of composite phase change materials

[0051] Take lauric acid and myristic acid with a mass ratio of 58:42, put them into a beaker with a total mass of 50g, put them on a magnetic stirrer with heating function, set the heating temperature to 100°C, and the speed to 1400r / min until Completely melted to obtain the eutectic mixture of lauric acid and myristic acid, and then cooled to room temperature to obtain a composite phase change material.

[0052] (2) Measuring the physical parameters of composite phase change materials

[0053] Using differential scanning calorimeter, protective atmosphere: nitrogen; flow rate: 15ml / min; heating rate: 5K / min, test temperature range 20℃~50℃. Draw the DSC curve of the composite phase change material of lauric acid and myristic acid, and analyze the phase change temperature and latent heat of phase change. The obtained results are t 2 =34.273°C, H 2 = 162.801 kJ / kg.

[0054] (3) preparation of microcapsules

[0055] ...

Embodiment 3

[0062] (1) Synthesis of composite phase change materials

[0063] Take lauric acid and palmitic acid with a mass ratio of 69:31, add them to a beaker with a total mass of 50 g, put them on a magnetic stirrer with heating function, set the heating temperature at 100 ° C, and rotate at 1200 r / min until completely melting to obtain a eutectic mixture of lauric acid and palmitic acid, and then cooling to room temperature to obtain a composite phase change material.

[0064] (2) Measuring the physical parameters of composite phase change materials

[0065] Using differential scanning calorimeter, protective atmosphere: nitrogen; flow rate: 15ml / min; heating rate: 5K / min, test temperature range 20℃~50℃. Draw the DSC curve of the composite phase change material of lauric acid and stearic acid, and analyze the phase change temperature and latent heat of phase change. The obtained results are t 3 =33.283°C, H 3 = 166.54 kJ / k.

[0066] (3) preparation of microcapsules

[0067] Firs...

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Abstract

The invention discloses wearable equipment based on a composite phase change material and a production method of the wearable equipment. The production method incudes: preparing the composite phase change material, performing microencapsulation on the composite phase change material, performing microcapsule formaldehyde removing, performing cellular board encapsulation and performing fiber cloth and silk encapsulation. The production method has the advantages that the composite phase change material prepared by the eutectic mixture of two organic phase change materials as the core material, melamine-formaldehyde prepolymer is allowed to have polymerization reaction with an emulsion so as to perform microcapsule wrapping on the core material, microcapsules are loaded into a polyester fiber cellular board to increase the pressure resistance of the microcapsules so as to prevent the deformation and leakage of the microcapsules, the finally obtained wearable equipment is a polyester fiber cellular board sleeved with fiber cloth and silk, the phase-change-material microcapsules are loaded into the holes of the cellular board, and the microcapsules use melamine resin generated by melamine and formaldehyde as the wall material and the composite phase change material as the core material and is high in phase change latent heat, stable in chemical performance, non-corrosive and capable of achieving zero energy consumption when being used in a high-temperature environments in summer.

Description

technical field [0001] The invention relates to the application of a composite phase change material, in particular to a wearable device based on the composite phase change material and a preparation method thereof. Background technique [0002] The unique phase change latent heat performance of phase change materials, combined with the heat storage and release in practical applications, can realize the utilization of low-grade energy, waste heat sources and renewable energy. Phase change heat storage materials can generally be divided into inorganic phase change heat storage materials, metal phase change heat storage materials, organic phase change heat storage materials and composite phase change heat storage materials. [0003] Inorganic phase change heat storage materials mainly include crystalline hydrated salts, metal salt hydrates, activated clay and mineral wool. Inorganic phase change materials are prone to supercooling and phase separation during the phase change ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06A41D31/00A41D31/04
Inventor 李平姣李巧石岩石静迎庞磊肖军
Owner SOUTHEAST UNIV
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