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Preparation method for phase-change energy-storage microcapsule and phase-change energy-storage microcapsule

A phase-change energy storage and microcapsule technology, which is applied in the direction of microcapsule preparation, microsphere preparation, chemical instruments and methods, etc., can solve the problems of high brittleness of the wall material, low encapsulation rate, complicated process, etc., and achieve thermal stability Good performance, good capsule dispersibility, and simple preparation technology

Inactive Publication Date: 2012-04-11
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of phase change capsules by the above method also has problems such as high wall material brittleness, low encapsulation efficiency, and complicated process. Therefore, it is necessary to develop a simple and effective method for coating phase change materials.

Method used

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  • Preparation method for phase-change energy-storage microcapsule and phase-change energy-storage microcapsule
  • Preparation method for phase-change energy-storage microcapsule and phase-change energy-storage microcapsule
  • Preparation method for phase-change energy-storage microcapsule and phase-change energy-storage microcapsule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] See figure 1 . use as figure 1 The shown device prepares phase-change energy storage microcapsules, and the device includes a coaxial composite spinneret 3 composed of an outer nozzle 1 and an inner nozzle 2 made of metal materials, an internal and external fluid infusion system 4, and a DC high-voltage power supply 5. Ground wire 6, collecting device 7 and heating temperature control system 8;

[0045] The inside of a heating temperature control system (temperature control box) 8 is provided with the coaxial composite spinneret 3 composed of the outer nozzle 1 and the inner nozzle 2, the internal and external fluid infusion system 4, the DC high voltage power supply 5, Ground wire 6 and collecting device 7; Wherein, described outer spray pipe 1 and inner spray pipe 2 are connected with the positive pole of described DC high voltage power supply 5 by wire, and the negative pole of DC high voltage power supply 5 is grounded through ground wire 6; The collecting device...

Embodiment 2

[0048] The device of Example 1 was used.

[0049] Add 2g of polyvinylpyrrolidone to the mixed solution of 4g of ethanol and 8g of acetic acid, and add 7g of Ti(OiPr) after completely dissolving 4 and 7gVO(OiPr) 3 After stirring evenly, a sol with a polyvinylpyrrolidone concentration of 7 wt% was formed as a shell solution. The shell solution is delivered to the outer nozzle at a rate of 1.0-5.0mL / h through the outer fluid infusion system. With capric acid as the core solution, it is delivered to the inner spray tube at a rate of 0.1-1mL / h through the internal fluid infusion system. The composite spinneret is connected to the positive pole of the high-voltage power supply, and the metal plate covered with aluminum foil is grounded as the collecting plate. The working voltage is 25-40KV. After axial electrospraying, the fluids of the shell solution and the core solution meet at the nozzle of the composite spinneret to form a composite fluid. The composite fluid is subjected t...

Embodiment 3

[0051] The device of Example 1 was used.

[0052] Add 4g of polyvinylpyrrolidone to the mixed solution of 8g of ethanol and 4g of acetic acid, and add 14g of Ti(OiPr) after completely dissolving 4 After stirring evenly, a sol with a polyvinylpyrrolidone concentration of 13 wt% was formed as a shell solution. The shell solution is delivered to the outer nozzle at a rate of 3.0-10.0mL / h through the outer fluid infusion system. With hexadecanoic acid as the core solution, it is delivered to the inner spray tube at a rate of 0.5-2mL / h through the internal fluid infusion system. The composite spinneret is connected to the positive pole of the high-voltage power supply, and the metal plate covered with aluminum foil is grounded as the collecting plate. The working voltage is 10-30KV. After axial electrospraying, the fluids of the shell solution and the core solution meet at the nozzle of the composite spinneret to form a composite fluid. The composite fluid is subjected to the joi...

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Abstract

The invention belongs to the technical field of preparation of phase-change microcapsules, in particular to a preparation method of a phase-change energy-storage microcapsule and the phase-change energy-storage microcapsule. A preparation technology of the phase-change energy-storage microcapsule provided by the invention comprises the following step of: coating a phase-change material inside micron and / or nano particles by adopting a melting and coaxial electronic injection method to form the phase-change energy-storage microcapsule with a core-shell structure. The phase-change energy-storage microcapsule provided by the invention has a core-shell structure constructed by a shell material and an organic phase-change core material packaged in the shell material; and the microcapsule has a phase-change energy-storage property. A melting and coaxial electronic injection preparation process provided by the invention has a simple process, and can be used for preparing a micron and / or nano-scale capsule; the capsule has high dispersity and a large specific surface area.

Description

technical field [0001] The invention belongs to the technical field of preparation of phase change microcapsules, in particular to a preparation method of phase change energy storage microcapsules and the phase change energy storage microcapsules. Background technique [0002] In recent years, with the further tension and shortage of global energy sources, the development and research of energy saving and energy storage technologies have become one of the important means to improve energy utilization. Among them, phase change energy storage technology is an effective means to solve the contradiction between energy supply and demand in time and space, and to meet people's needs. In the research of phase change energy storage technology, the development of phase change energy storage materials is the most concerned. [0003] Phase-change energy storage materials, or phase-change materials, refer to materials that can be used for energy storage by utilizing a large amount of h...

Claims

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Application Information

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IPC IPC(8): B01J13/06C09K5/06
Inventor 王女赵勇陈洪燕邸建城江雷
Owner INST OF CHEM CHINESE ACAD OF SCI
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