Phase change microcapsule, preparation method and applications thereof

A technology of phase-change microcapsules and capsule cores, which can be used in microcapsule preparations, microsphere preparation, chemical instruments and methods, etc., and can solve problems such as complex preparation processes

Inactive Publication Date: 2018-07-13
NANOSPHERE SHANGHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above patents need to undergo multiple treatments, or repeated cycles or multiple polymerization processes, all of which have problems with relatively complicated preparation processes.

Method used

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  • Phase change microcapsule, preparation method and applications thereof
  • Phase change microcapsule, preparation method and applications thereof
  • Phase change microcapsule, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] water box:

[0073]

[0074] Oil phase:

[0075]

[0076] Preparation:

[0077] Add the water phase to the oil phase at 40°C, stir the reaction at 800rpm for 40 minutes, and continue to stir at this temperature for 2 hours, then filter with suction, collect the solids, wash with water, and put them in a vacuum oven at 50°C After drying for 20 hours, the phase change microcapsules can be obtained.

Embodiment 2

[0079] water box:

[0080]

[0081] Oil phase:

[0082]

[0083] Preparation:

[0084] Add the water phase to the oil phase at 40°C, stir the reaction at 3500rpm for 40 minutes, maintain stirring at 60°C for 9 hours, then filter with suction, collect the solids, wash with water, and dry in a vacuum oven at 50°C for 24 hours, the phase change microcapsules can be obtained.

Embodiment 3

[0086] water box:

[0087]

[0088] Oil phase:

[0089]

[0090]

[0091] Preparation:

[0092] Add the water phase to the oil phase at 40°C, stir the reaction at 8000rpm for 40 minutes, maintain stirring at 90°C for 15 hours, then filter with suction, collect the solids, wash with water, and dry in a vacuum oven at 50°C for 20 hours, the phase change microcapsules can be obtained.

[0093] The composition and properties of the phase change microcapsules of each embodiment are shown in Table 1.

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Abstract

The invention discloses a phase change microcapsule and a preparation method thereof. The phase change microcapsule comprises an outer shell and a capsule core wrapped in the outer shell, wherein thecapsule wall of the outer shell contains the polymer material of a repeating monomer unit formed from the following monomer: (A) 40-80 wt% of more than one selected from C1-C24 alkyl acrylate or C1-C24 alkyl methacrylate, and (B) 20-60 wt% of a long-chain monomer with a general formula of CH2=CR1COO(CH2CH2O)m-(CH3CHCH2O)nR2, a weight ratio of the outer shell to the capsule core is 1:1-9, and the capsule core is an organic phase change material. According to the present invention, the product has good dispersion stability in practical application, especially in the application of aqueous matrixes or inorganic materials, so as to further improve the energy storage property; and with the long-chain hydrophilic group, the interfacial action force between the phase change microcapsule and the matrix can be enhanced, and the problems of the reduced strength and the like in the application of the material can be avoided.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of phase change microcapsules. Background technique [0002] Phase change materials refer to substances that change the state of matter with temperature changes and can provide latent heat, that is, absorb heat from the external environment or release heat to the external environment, so as to achieve the purpose of energy utilization and environmental temperature control. Although phase change materials have high latent heat of phase change and have broad application prospects in the field of temperature control and heat storage, phase change materials also have problems of volume change and easy reaction with the surrounding environment, which greatly limit its application range. . [0003] Microcapsule technology is to use the film-forming capsule wall to encapsulate volatile, leaky or reactive liquid or solid materials in the shell to form tiny particles. Phase change microcapsul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D7/61C09D7/63C09D7/65C08F283/06C08F220/14C08F222/14C08F2/44C08K3/36C08K3/26C08K5/01B01J13/14C09K5/06
CPCB01J13/14C08F2/44C08F283/065C08K2003/265C08L2205/035C09D143/04C09K5/063C08L51/08C08L1/284C08L71/02C08K5/17C08K3/26C08K5/01C08K3/36C08F220/1804
Inventor 刘峰王静文曹君李玲玲战晓飞孙伟贤
Owner NANOSPHERE SHANGHAI
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