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Phase-change energy-storage microcapsule with shear thickening effect, and preparation method and application thereof

A technology of phase change energy storage and microcapsules, which is applied in the field of materials and can solve problems such as single functionality

Inactive Publication Date: 2020-10-23
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current phase change microcapsule materials and shear thickening materials only have a single function

Method used

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  • Phase-change energy-storage microcapsule with shear thickening effect, and preparation method and application thereof
  • Phase-change energy-storage microcapsule with shear thickening effect, and preparation method and application thereof
  • Phase-change energy-storage microcapsule with shear thickening effect, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0050] Example 2: 52°C Shear Thickening Phase Change Energy Storage Microcapsules

[0051] Dissolve 1.2g of TDI in 10g of alkane paraffin wax with a melting point of 52°C as the oil phase, and heat it in an oven at 70°C until it is below the liquid state. Dissolve 4g of PVA20-99 in 40g of distilled water as the water phase, and preheat to 70°C. Mix the water phase with the oil phase and shear for 100s at 20000r / m. Transfer to the reaction kettle, the reaction temperature is 60°C, add 0.1g of dibutyltin dilaurate, rotate at 100r / m, and stir mechanically for 24h. After the reaction is completed, wash twice with distilled water, and dry to obtain dry powder of 52-degree alkane phase-change energy storage microcapsules.

[0052] From the scanning electron microscope photos, the size of the 52°C alkane phase-change energy storage microcapsules is 100nm to 1μm, and the obtained dry powder of the 52°C alkane phase-change energy storage microcapsules is washed with water and centrifug...

Embodiment 3、72

[0053] Example 3, 72°C shear thickening phase change energy storage microcapsules

[0054] 1.2 g of HMDI was dissolved in 10 g of alkane paraffin having a melting point of 72° C. at 90° C. as an oil phase. Dissolve 0.4g of PVA24-99 in 90g of distilled water as the water phase, and preheat to 90°C. Mix the water phase with the oil phase and shear for 60s at 30000r / m. Transfer to the reaction kettle, the reaction temperature is 30°C, add 0.12g of stannous octoate, rotate at 500r / m, and stir mechanically for 2h. After the reaction was completed, it was washed twice with distilled water and dried to obtain dry powder of phase-change energy storage microcapsules at 72°C.

[0055] From the scanning electron microscope photos, the size of the phase-change energy storage microcapsules at 72°C is 100-200nm. After washing and centrifuging the dry powder of the phase-change energy storage microcapsules at 72°C three times with water, the polymer of the phase-change energy storage micro...

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Abstract

The invention discloses a phase-change energy-storage microcapsule with a shear thickening effect, and a preparation method and application thereof. Alkanes with different melting points are taken ascore materials, and the phase-change energy-storage microcapsule taking polyurethane as a shell material is prepared by an emulsifier-free emulsion polymerization method. By changing the types of thecore materials, the working temperature and the heat storage performance can be changed. The core-shell structure of the phase-change energy-storage microcapsule has phase-change energy storage and shear thickening properties at the same time. The phase-change microcapsule material is technically endowed with the shear thickening property, the application range of the phase-change microcapsule material is effectively widened, and the phase-change microcapsule material has a wide application prospect in the wearable field.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a phase change energy storage microcapsule and a preparation method thereof, in particular to a phase change energy storage microcapsule with a shear thickening effect, a preparation method and an application thereof. Background technique [0002] Phase change materials can absorb and release a large amount of heat at a constant temperature, thereby achieving temperature regulation. The preparation of microcapsule phase change materials by encapsulation technology can effectively solve the problems of leakage, phase separation and corrosion of phase change materials, help to improve the application performance of phase change materials, and help expand the application field of phase change heat storage technology . At present, phase change microcapsule materials have been widely used as thermal insulation materials in clothing, construction, aerospace and other fields. In recent years, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02C09K5/06
CPCB01J13/02C09K5/063
Inventor 王倩田思思高鸿赵彤罗振华
Owner INST OF CHEM CHINESE ACAD OF SCI
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