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Infrared phase-changing material and preparation method thereof

A phase-change material and infrared technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problem that it is difficult to meet the needs of low-emissivity camouflage, and achieve the effect of reducing links and coating thickness

Inactive Publication Date: 2010-09-29
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that it is difficult to meet the full-time low-emissivity camouflage requirements for infrared stealth camouflage by using a single low-emissivity material or a single phase-change material for protection engineering.

Method used

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  • Infrared phase-changing material and preparation method thereof
  • Infrared phase-changing material and preparation method thereof
  • Infrared phase-changing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0028] Step 1, using decane as paraffin, weighing 10g of paraffin, 10g of styrene, 1g of methacrylic acid, 0.08g of dodecyl mercaptan, 0.8g of sodium lauryl sulfate, and 0.1g of azobisisobutyronitrile;

[0029] In step 2, the paraffin, styrene, methacrylic acid, dodecanethiol and azobisisobutyronitrile weighed in step 1 are uniformly mixed at room temperature by magnetic stirring;

[0030] Step 3, adding the weighed sodium lauryl sulfate into 120 g of deionized water, and fully stirring at room temperature until the sodium lauryl sulfate is completely dissolved;

[0031] Step 4, the mixed solution obtained in step 2 is added to the mixed solution obtained in step 3, and fully stirred at room temperature for 0.5 hours;

[0032] Step five, ultrasonic emulsifying the mixed solution obtained in step four under ice bath for 10 minutes;

[0033] Step 6, the mixed solution obtained after step 5 ultrasonication is transferred into a four-neck flask with mechanical stirring, condenser...

Embodiment approach 2

[0043] Step 1, using octadecane as paraffin, weigh 10g of paraffin, 10g of styrene, 0.2g of methacrylic acid, 0.08g of dodecyl mercaptan, 0.2g of sodium lauryl sulfate, 0.2g of Triton X-100, and Azodiisobutyronitrile 0.1g;

[0044] Step 2, uniformly mixing the paraffin, styrene, methacrylic acid, dodecanethiol and azobisisobutyronitrile weighed in step 1 at 35° C. with magnetic stirring;

[0045] Step 3, adding the weighed sodium lauryl sulfate and Triton X-100 into 120 g of deionized water, and fully stirring at 35° C. until the two substances are completely dissolved;

[0046] Step 4, the mixed solution obtained in step 2 is added to the mixed solution obtained in step 3, and fully stirred at 35° C. for 0.5 hours;

[0047] Step five, ultrasonic emulsifying the mixed solution obtained in step four under ice bath for 10 minutes;

[0048] Step 6, the mixed solution obtained after step 5 ultrasonication is transferred into a four-neck flask with mechanical stirring, condenser,...

Embodiment approach 3

[0058] Step 1, paraffin wax adopts eicosane, weigh 10g of paraffin wax, 10g of styrene, 0.5g of methacrylic acid, 0.2g of dodecyl mercaptan, 0.1g of sodium lauryl sulfate, 0.2g of triton X-100, and Azodiisobutyronitrile 0.2g;

[0059] Step 2, uniformly mixing the paraffin, styrene, methacrylic acid, dodecanethiol and azobisisobutyronitrile weighed in step 1 at 45° C. by magnetic stirring;

[0060] Step 3, adding the weighed sodium lauryl sulfate and Triton X-100 into 120 g of deionized water, and fully stirring at 45° C. until the two substances are completely dissolved;

[0061] Step 4, the mixed solution obtained in step 2 is added to the mixed solution obtained in step 3, and fully stirred at 45° C. for 0.5 hours;

[0062] Step five, ultrasonic emulsifying the mixed solution obtained in step four under ice bath for 10 minutes;

[0063] Step 6, the mixed solution obtained after step 5 ultrasonication is transferred into a four-neck flask with mechanical stirring, condenser...

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Abstract

The invention relates to an infrared phase-changing material, which relates to an optoelectronic material. The infrared phase-changing material comprises an inner shell, an outer shell, and a core material, the inner shell comprises a copolymer containing styrene and methylacrylic acid, the outer shell comprises conductive polyaniline, and the core material comprises various kinds of paraffins. The preparation method comprises the following steps: uniformly mixing the paraffins, styrene, methylacrylic acid, dodecyl mercaptan and azobisisobutyronitrile according to a certain proportion; dissolving a certain amount of sodium dodecyl sulfate and TritonX-100 in de-ionized water; completely mixing the two solutions together, moving the solutions in a four-hole bottle after ultrasonic emulsification in ice-bath, filling nitrogen, heating and agitating; after six hours, obtaining a powder sample through cooling, emulsion breaking, filtration, washing and drying; uniformly mixing a certain proportion of powder sample, aniline monomer and dilute hydrochloric acid together, and slowly adding a certain amount of ammonium persulfate and hydrochloric acid solution after cooling down; and after six hours, obtaining the final product through filtration, washing and drying. The invention solves the problem that two materials are needed for the temperature control and the reduction of the infrared emissivity, increases the associative property of different materials, and reduces the coating thickness and the actual construction links.

Description

technical field [0001] The invention relates to an optoelectronic material and a preparation method thereof. It is suitable for heat exchange, temperature control and military fields, such as aerospace, building materials, heat storage and temperature regulating textiles, etc. Background technique [0002] According to the Stephen-Boltzmann law, the infrared radiation energy of an object is proportional to its surface infrared emissivity, and is proportional to the fourth power of its surface temperature. Therefore, reducing the surface temperature of an object and reducing the infrared emissivity are two effective ways to suppress infrared emission means. From the perspective of temperature control, phase change materials can delay the change of the target temperature by absorbing or releasing heat for the target heating section or the target with a heat source inside, thereby delaying the exposure of the infrared characteristics of the target; materials with low infrared ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06C08F212/08C08F220/06C08G73/02C08K5/01
Inventor 何大伟王永生鞠长滨高琦富鸣
Owner BEIJING JIAOTONG UNIV
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