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Heat energy storage material

A thermal energy storage and form technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of low impermeability, unsuitable for exposure, impermeability, etc.

Active Publication Date: 2016-12-07
深圳美诺克科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermal energy storage microcapsule technology in the prior art is a hot spot and technical difficulty in recent years. As described in GB1507739A, the capsules based on melamine formaldehyde resin are impermeable and durable, but they often have The disadvantage of lower impermeability
The material described in WO9924525A is not suitable for exposure to high temperatures
No specific polymer material is currently strong enough to withstand both high temperature and pressure

Method used

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  • Heat energy storage material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) A polystyrene solution was prepared by dissolving 3 g of poly(styrene) (molecular weight 1500) in 80 g of styrene monomer, and the mixture was stirred until the polymer was completely dissolved;

[0019] (2) Put oxalic acid, ethylene glycol, lactic acid and 0.9wt% catalyst tetraisopropoxytitanium and phosphoric acid with a molar ratio of 2:2:1.2 into a tank equipped with an electric booster stirrer and a condensing return pipe In a two-necked flask, heat the oil bath to 230°C under the protection of nitrogen, dehydrate for 2 hours, then vacuumize, control the pressure until the vacuum degree is lower than 50Pa, carry out the degreasing reaction, stop the reaction after 2 hours, and cool under the protection of nitrogen After that, a white solid polymer copolymer was obtained, and the obtained product was vacuum-dried at 30°C.

[0020] (2) Oil phase preparation: weigh 4mg of polymer copolymer prepared in step (2), 4g of polystyrene solution prepared in step (1), 2g o...

Embodiment 2

[0024] (1) A polystyrene solution was prepared by dissolving 8 g of poly(styrene) in 90 g of styrene monomer, and the mixture was stirred until the polymer was completely dissolved;

[0025] (2) Put oxalic acid, ethylene glycol, lactic acid and 0.5wt% catalyst tetraisopropoxytitanium and phosphoric acid with a molar ratio of 2:2:1.2 into a tank equipped with an electric booster stirrer and a condensing return pipe In a two-necked flask, heat the oil bath to 230°C under the protection of nitrogen, dehydrate for 2 hours, then vacuumize, control the pressure until the vacuum degree is lower than 50Pa, carry out the degreasing reaction, stop the reaction after 3 hours, and cool under the protection of nitrogen After that, a white solid polymer copolymer was obtained, and the obtained product was vacuum-dried at 40°C.

[0026] (2) Oil phase preparation: weigh 4mg of polymer copolymer prepared in step (2), 8g of polystyrene solution prepared in step (1), 4g of styrene, 3g of methacr...

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Abstract

The invention relates to a heat energy storage material. The heat energy storage material is characterized in that the material is of a capsule form, and contains heat energy storage components serving as cores and shell components. A preparation method includes: (1) preparing polystyrene solution; (2) preparing high-molecular polymer; (3) preparing oil phase; (4) preparing water phase; (5) adding the oil phase into the water phase to obtain the heat energy storage material. The heat energy storage material can overcome high temperature during spinning, most or all the core material can be still kept even though the capsules are exposed to the spinning temperature over 220 DEG C, and it is found that the core-material capsules can maintain more than 99% of hydrophobic liquid or wax after being subjected to the spinning process.

Description

technical field [0001] The invention relates to a thermal energy storage material and a preparation method thereof, belonging to the technical field of material production. Background technique [0002] Thermal energy storage materials (Phase Change Materials, referred to as PCM. The so-called thermal energy storage refers to the absorption or release of energy by substances during the phase change process. It is this characteristic that constitutes the theoretical basis for the wide application of thermal energy storage materials. Thermal energy storage When a material changes from a liquid to a solid state, it undergoes a change in physical state. During these two phase transitions, the material absorbs heat from the environment, and vice versa, releases heat to the environment. It can be stored or released when the physical state changes The energy is called phase change heat, and the temperature range in which the phase change occurs is very narrow. When the physical s...

Claims

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Application Information

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IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 张天奇
Owner 深圳美诺克科技有限公司