Preparation method of spherical phase change microcapsule

A phase change microcapsule, spherical technology, applied in chemical instruments and methods, heat exchange materials, etc., can solve problems such as poor compatibility, flow, corrosion, etc., achieve small particle size, high purity, and physical and chemical stability. Good results

Inactive Publication Date: 2018-08-17
SUZHOU FUZHONG PLASTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, the phase change energy storage materials themselves have problems such as flow, poor compatibility and corrosion during the phase change process.

Method used

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  • Preparation method of spherical phase change microcapsule

Examples

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Effect test

Embodiment 1

[0024] A preparation method of spherical phase-change microcapsules, the composition is by weight, comprising the following steps:

[0025] (1) Mix 2 parts of n-dodecyl alcohol, 1 part of beeswax, 2 parts of polyethylene glycol, 1 part of beesic acid, 1 part of lauric acid, 15 parts of cationic modified styrene, 5 parts of acrylonitrile, 1 part of acrylic acid and 1 part of tragacanth gum was mixed evenly to obtain solution A;

[0026] (2) Mix 0.5 parts of azobisisobutylamidine hydrochloride, 5 parts of sodium potassium stearate and 85 parts of deionized water, and stir for 10 minutes to obtain solution B;

[0027] (3) Add solution A to solution B, and pre-emulsify at a speed of 500r / min for 30min;

[0028] (4) Transfer to an ultrasonic cell disruptor, under the protection of an ice-water bath, ultrasonically disperse for 10 minutes under the conditions of a power of 200W and a time interval of 2s;

[0029] (5) Transfer to a three-necked flask equipped with a reflux condense...

Embodiment 2

[0033] A preparation method of spherical phase-change microcapsules, the composition is by weight, comprising the following steps:

[0034] (1) Mix 3 parts of n-dodecyl alcohol, 1.5 parts of beeswax, 3 parts of polyethylene glycol, 1.5 parts of beesic acid, 1.5 parts of lauric acid, 17 parts of cationic modified styrene, 6 parts of acrylonitrile, 1.5 parts of acrylic acid and 1.5 parts of propylene glycol were mixed uniformly to obtain solution A;

[0035] (2) Mix 0.7 parts of azobisisobutylamidine hydrochloride, 6 parts of sodium potassium stearate and 90 parts of deionized water, and stir for 12 minutes to obtain solution B;

[0036] (3) Add solution A to solution B, and pre-emulsify at a speed of 550r / min for 35 minutes;

[0037] (4) Transfer to an ultrasonic cell disruptor, under the protection of an ice-water bath, ultrasonically disperse for 12 minutes under the conditions of a power of 220W and a time interval of 3s;

[0038] (5) Transfer to a three-necked flask equip...

Embodiment 3

[0042] A preparation method of spherical phase-change microcapsules, the composition is by weight, comprising the following steps:

[0043] (1) Mix 4 parts of n-dodecyl alcohol, 1.5 parts of beeswax, 3 parts of polyethylene glycol, 1.5 parts of beesic acid, 2 parts of lauric acid, 18 parts of cationic modified styrene, 6 parts of acrylonitrile, 1.5 parts of acrylic acid and 1.5 parts of glycerin were mixed evenly to obtain solution A;

[0044] (2) Mix 0.8 parts of azobisisobutylamidine hydrochloride, 7 parts of sorbitan monostearate and 95 parts of deionized water, and stir for 13 minutes to obtain solution B;

[0045] (3) Add solution A to solution B, and pre-emulsify at a speed of 550r / min for 35 minutes;

[0046] (4) Transfer to an ultrasonic cell disruptor, under the protection of an ice-water bath, ultrasonically disperse for 13 minutes under the conditions of a power of 230W and a time interval of 3s;

[0047] (5) Transfer to a three-necked flask equipped with a reflux...

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Abstract

The invention provides a preparation method of a spherical phase change microcapsule. The preparation method includes the steps: (1) uniformly mixing n-dodecanol, beewax, polyethylene glycol, melissicacid, lauric acid, cationic modified styrene, acrylonitrile, acrylic acid and co-emulsifiers to obtain solution A; (2) mixing and stirring 2,2'-azobis[2-methylpropionamidine] dihydrochloride, emulsifiers and deionized water to obtain solution B; (3) adding the solution A into the solution B to perform pre-emulsification; (4) transferring the solution into an ultrasonic cell crusher to perform ultrasonic dispersion; (5) transferring the solution into a three-necked flask with a reflux condensing tube, a mechanical stirrer and a thermometer, heating the solution and performing thermostatic water-bath reaction; (6) naturally cooling the solution to room temperature and adding ethanol solution containing 2wt% calcium chloride to perform demulsification and suction filtration; (7) sequentiallywashing a product with ethanol solution and distilled water and drying the product to obtain the spherical phase change microcapsule. The spherical phase change microcapsule prepared by the method has quite high encapsulation efficiency and is high in phase change latent heat and excellent in energy-saving effect.

Description

technical field [0001] The invention relates to a preparation method of spherical phase change microcapsules. Background technique [0002] With the rapid development of modern technology and industry, people's demand for energy is also increasing day by day. To solve the unprecedented crisis of people's demand for energy, one is to find new clean energy, such as the development and utilization of nuclear energy, hydrogen energy, solar energy, etc.; the other is to develop new energy-saving methods, prolong the use time of energy, and realize the maximum utilization of existing energy change. Thermal energy storage technology is currently an effective way to improve energy utilization, therefore, the development of new energy storage technologies has become a research topic in recent years. Phase change energy storage materials can solve the imbalance of space and time distribution of energy supply and demand, improve energy efficiency, and are widely used in solar energy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 史闵新
Owner SUZHOU FUZHONG PLASTIC CO LTD
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