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Method for preparing multi-phase change material coated with microcapsule

A multi-phase change and microcapsule technology, which is applied in the direction of microcapsule preparation, microsphere preparation, heat exchange materials, etc., can solve the problems of single types of coating materials and limit the application of microcapsules, so as to enhance practicability and expand application range effect

Inactive Publication Date: 2012-08-08
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: the type of coating material is single, which limits the application of microcapsules

Method used

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  • Method for preparing multi-phase change material coated with microcapsule
  • Method for preparing multi-phase change material coated with microcapsule
  • Method for preparing multi-phase change material coated with microcapsule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0024] The steps of a preparation method of a multi-phase change material coated with microcapsules include:

[0025] Step 1, weigh 6g of paraffin, 15g of styrene, 1.05g of methacrylic acid, 0.105g of dodecyl mercaptan, 0.42g of sodium dodecylbenzenesulfonate, and 0.42g of potassium persulfate;

[0026] Step 2: adding the weighed styrene, methacrylic acid, and dodecanethiol into 40 g of deionized water, mixing, and stirring evenly to obtain a solution.

[0027] Step 3, heating and melting the weighed paraffin to make it evenly mixed, and then adding it to the solution in Step 2;

[0028] Step 4, adding the weighed sodium dodecylbenzene sulfonate into 20 g of deionized water, and heating to 50° C. in a water bath;

[0029] Step 5, adding the sodium dodecylbenzenesulfonate solution in step 4 to the mixed solution obtained in step 2, and ultrasonically emulsifying for 5 minutes;

[0030] Step 6, adding the weighed potassium persulfate into 20g deionized water, heating and disso...

Embodiment approach 2

[0037] Concrete steps of a preparation method of a microcapsule-coated multi-phase transition point material:

[0038] Step 1, weigh 6g of paraffin, 15g of styrene, 1.05g of methacrylic acid, 0.2g of dodecyl mercaptan, 0.5g of sodium dodecylbenzenesulfonate, and 1g of potassium persulfate;

[0039] Step 2: adding the weighed styrene, methacrylic acid, and dodecanethiol into 40 g of deionized water, mixing, and stirring evenly to obtain a solution.

[0040] Step 3, heating and melting the weighed paraffin to make it evenly mixed, and then adding it to the solution in Step 2;

[0041] Step 4, adding the weighed sodium dodecylbenzene sulfonate into 20 g of deionized water, and heating to 50° C. in a water bath;

[0042] Step 5, adding the sodium dodecylbenzenesulfonate solution in step 4 to the mixed solution obtained in step 2, and ultrasonically emulsifying for 5 minutes;

[0043] Step 6, adding the weighed potassium persulfate into 20g deionized water, heating and dissolving...

Embodiment approach 3

[0050] Concrete steps of a preparation method of a microcapsule-coated multi-phase transition point material:

[0051] Step 1, weigh 6g of paraffin, 15g of styrene, 1.05g of methacrylic acid, 0.42g of dodecyl mercaptan, 1.05g of sodium dodecylbenzenesulfonate, and 2.1g of potassium persulfate;

[0052] Step 2: adding the weighed styrene, methacrylic acid, and dodecanethiol into 40 g of deionized water, mixing, and stirring evenly to obtain a solution.

[0053] Step 3, heating and melting the weighed paraffin to make it evenly mixed, and then adding it to the solution in Step 2;

[0054] Step 4, adding the weighed sodium dodecylbenzene sulfonate into 20 g of deionized water, and heating to 50° C. in a water bath;

[0055] Step 5, adding the sodium dodecylbenzenesulfonate solution in step 4 to the mixed solution obtained in step 2, and ultrasonically emulsifying for 5 minutes;

[0056] Step 6, adding the weighed potassium persulfate into 30g deionized water, heating and dissol...

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Abstract

The invention provides a method for preparing multi-phase change materials coated with microcapsules, which relates to a preparation method for optoelectronic materials. The method comprises the steps: taking materials as per the mass ratio of paraffin to styrene being 2:5; weighing methacrylate in 5 % of the total mass of paraffin and styrene, 0.5% to 2% of dodecanethiol, 2% to 5% of sodium dodecyl benzene sulfonate, and 2% to 10% of potassium persulfate; adding the styrene, methacrylate and the dodecanethiol into deionized water and stirring to obtain mixed solution; melting and adding the paraffin into the mixed solution; dissolving and heating the sodium dodecyl benzene sulfonate to 50 DGE C and then adding the sodium dodecyl benzene sulfonate into the mixed solution; ultrasonically emulsifying the mixed solution and then adding the solution into a four-port container; supplying nitrogen for 0.5 hour and heating the container with water bath to 70 DEG C; stirring the solution and then adding potassium persulfate solution for polymerization; cooling, filtering in vacuum and drying the product, thereby obtaining the sample. The method solves the problem of single type of coatingmaterial, improves the utility of phase change microcapsules, expands phase change temperature range and enlarges application scope of phase change microcapsules.

Description

technical field [0001] The invention relates to a preparation method of an optoelectronic material. 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] Due to the commonly used low-temperature phase change materials, solid-liquid phase transition occurs during work, and direct use of phase change materials will bring a lot of inconvenience. Therefore, it is considered to use various methods to encapsulate phase change materials, among which microencapsulation is the most popular in recent years. A hotspot of research. Microcapsule technology is a technology that uses film-forming materials to encapsulate solids or liquids to form tiny particles with particle sizes in the range of microns or millimeters. A layer of stable polymer film is coated on the surface of phase change material particles to form a new composite phase change...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06B01J13/14
Inventor 何大伟王永生丁冬杜玙璠富鸣
Owner BEIJING JIAOTONG UNIV