Preparation method and application of phase change-infrared stealth difunctional composite microcapsule

A composite microcapsule, dual-function technology, applied in applications, chemical instruments and methods, special coats, etc., can solve the problems of low emissivity infrared stealth coatings, easy to be oxidized and corroded, and the stealth effect is not strong, and achieve stealth effect. Good, eliminates adverse effects, and has a long-lasting effect

Active Publication Date: 2020-05-29
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current research, infrared stealth coatings with low emissivity are widely used, but the infrared stealth coatings whose basic approach is to control the infrared emissivity have poor tolerance to the surrounding complex environment, the stealth effect is not strong, and it is easy to be detected. Oxidation and corrosion, as the use time increases, the emissivity will increase, thus losing the stealth effect, and the stealth time is shorter
[0003] To sum up, how to obtain thermal infrared stealth materials with low emissivity, temperature control, stable performance and long action time is an urgent research problem at present.

Method used

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  • Preparation method and application of phase change-infrared stealth difunctional composite microcapsule
  • Preparation method and application of phase change-infrared stealth difunctional composite microcapsule
  • Preparation method and application of phase change-infrared stealth difunctional composite microcapsule

Examples

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Embodiment 1

[0032] (1) Dissolve 4.00 g of stearic acid, 0.12 g of sodium dodecylbenzenesulfonate and 1.48 g of calcium chloride in 100 ml of deionized water, and stir at 70° C. with a magnetic stirrer for 60 minutes to obtain component A;

[0033] (2) Dissolve 1.41g of sodium carbonate in 20ml of deionized water, and stir at room temperature for 10min to obtain component B;

[0034] (3) Add 0.04g of nano-iron powder to the component B described in step (2), and use an ultrasonic instrument to ultrasonically disperse for 120min to obtain component C;

[0035] (4) Slowly add component C obtained in step (3) dropwise to component A described in step (1), and stir at 70° C. with a magnetic stirrer for 120 minutes to obtain microcapsule liquid;

[0036] (5) After standing for 12 hours, filter the microcapsule liquid, and wash the filter residue 3 times with absolute ethanol and deionized water respectively, and finally dry at 60°C for 12 hours in a drying oven to obtain a microcapsule powder s...

Embodiment 2

[0038] (1) Dissolve 4.00 g of stearic acid, 0.12 g of sodium dodecylbenzenesulfonate and 1.48 g of calcium chloride in 100 ml of deionized water, and stir at 70° C. with a magnetic stirrer for 60 minutes to obtain component A;

[0039] (2) Dissolve 1.41g of sodium carbonate in 20ml of deionized water, and stir at room temperature for 10min to obtain component B;

[0040] (3) Add 0.12g of nano-iron powder to component B described in step (2), and use an ultrasonic instrument to ultrasonically disperse for 120 minutes to obtain component C;

[0041] (4) Slowly add component C obtained in step (3) dropwise to component A described in step (1), and stir at 70° C. with a magnetic stirrer for 120 minutes to obtain microcapsule liquid;

[0042] (5) After standing for 12 hours, filter the microcapsule liquid, and wash the filter residue 3 times with absolute ethanol and deionized water respectively, and finally dry at 60°C for 12 hours in a drying oven to obtain a microcapsule powder ...

Embodiment 3

[0044] (1) Dissolve 4.00 g of stearic acid, 0.12 g of sodium dodecylbenzenesulfonate and 1.48 g of calcium chloride in 100 ml of deionized water, and stir at 70° C. with a magnetic stirrer for 60 minutes to obtain component A;

[0045] (2) Dissolve 1.41g of sodium carbonate in 20ml of deionized water, and stir at room temperature for 10min to obtain component B;

[0046] (3) Add 0.20 g of nano-iron powder to component B described in step (2), and ultrasonically disperse for 120 minutes with an ultrasonic instrument to obtain component C;

[0047] (4) Slowly add component C obtained in step (3) dropwise to component A described in step (1), and stir at 70° C. with a magnetic stirrer for 120 minutes to obtain microcapsule liquid;

[0048] (5) After standing for 12 hours, filter the microcapsule liquid, and wash the filter residue 3 times with absolute ethanol and deionized water respectively, and finally dry at 60°C for 12 hours in a drying oven to obtain a microcapsule powder s...

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Abstract

The invention discloses a preparation method and application of a composite microcapsule phase change material with double functions of heat storage, temperature control and infrared stealth. Stearicacid is mainly used as a core material, calcium carbonate is used as a wall material, a nano ferromagnetic material is doped at the same time, and the difunctional composite microcapsule phase changematerial with a core-shell structure is prepared by adopting an in-situ polymerization method, the difunctional composite microcapsule phase change material is processed into an interlayer, a hollow part of clothes is coated with the interlayer by adopting a coating treatment mode, and a heat storage and temperature control-infrared stealth nocturnal clothing. For more simply illustrating, the interior of a mask is coated with the composite microcapsule phase change material, and the infrared stealth performance of a mask person-wearing area and other areas is tested and compared.

Description

technical field [0001] The invention relates to the technical field of preparation of phase change microcapsules, in particular to a preparation method and application of a phase change-infrared stealth dual-function composite microcapsule phase change material. Background technique [0002] Due to the universality of infrared radiation of objects and the difference between target and background infrared radiation, thermal infrared detection plays an increasingly important role in modern military reconnaissance, which seriously threatens the survivability of some military targets. Thermal infrared stealth materials can reduce the difference in infrared radiation intensity between the target and the background to the extent that thermal infrared detectors cannot recognize it, so as to achieve the purpose of relative stealth. Therefore, the thermal infrared stealth technology for the purpose of reducing the surface radiation intensity of objects has attracted great attention f...

Claims

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Application Information

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IPC IPC(8): C09K5/06A41D13/005A41D31/04
CPCA41D13/005A41D31/04C09K5/063
Inventor 柯伟东吴秀文张金林
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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