Preparation method of organic phase change energy storage composite material

A composite material and organic phase technology, which is applied in the direction of microsphere preparation, heat exchange materials, chemical instruments and methods, etc., can solve the problems of poor emulsification effect of core materials, affecting the efficiency of core material coating, etc., and achieves a wide range of industrial applications , low cost, cheap and easy-to-obtain raw materials

Active Publication Date: 2011-03-02
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The traditional preparation methods of organic solid-liquid phase change energy storage materials, such as the preparation method disclosed in CN200510024707.7 and CN200810068422.7, which blend and emulsify the core material and shell material and then polymerize, cannot effectively make styrene and methyl Methyl acrylate is completely polymerized into corresponding polymers (polystyrene and polymethyl methacrylate), and the emulsification effect of the core material is not good, which further affects the coating efficiency of the shell material on the core material

Method used

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  • Preparation method of organic phase change energy storage composite material
  • Preparation method of organic phase change energy storage composite material
  • Preparation method of organic phase change energy storage composite material

Examples

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Embodiment 1

[0036] Take 24g of stearic acid and place it in a 1000mL three-necked flask. Heat to 70℃. After it is completely melted, add 240mL of aqueous solution containing 2.0g of OP-10 and 1.6g of sodium dodecylbenzene sulfonate, while vigorously mechanically stirring, fully After emulsifying for 60 minutes, the temperature is reduced to 50°C, and it is recorded as A emulsion. Take 24mL of styrene into a 500mL three-necked flask, heat to 50℃, add 200mL of an aqueous solution containing 2.0g OP-10 and 2.0g sodium dodecylbenzene sulfonate, emulsify for 180min under vigorous mechanical stirring, denoted as B Lotion. Add Emulsion B to Emulsion A. After mechanically stirring at 45°C for 60 minutes, add 80 mL of an aqueous solution containing 2.4 g of ammonium persulfate. After continuing the reaction for 4 hours, cool to room temperature. Transfer the resulting emulsion to a 1000 mL beaker. After 50mL of sodium hydroxide solution with a concentration of 1mol / mL was demulsified, filtered wit...

Embodiment 2

[0042] Take 24g of stearic acid and place it in a 1000mL three-necked flask. Heat to 70℃. After it is completely melted, add 240mL of aqueous solution containing 2.0g of OP-10 and 1.6g of sodium dodecylbenzene sulfonate, while vigorously mechanically stirring, fully After emulsifying for 60 minutes, the temperature is reduced to 60°C, and it is recorded as A emulsion. Take 12mL of styrene into a 500mL three-necked flask, heat it to 60℃, add 200mL of an aqueous solution containing 2.0g OP-10 and 2.0g sodium dodecylbenzene sulfonate, emulsify for 180min under vigorous mechanical stirring, denoted as B Emulsion: Add Emulsion B to Emulsion A. After mechanically stirring at 25°C for 120 minutes, add 80 mL of an aqueous solution containing 1.2 g of ammonium persulfate. After continuing the reaction for 4 hours, cool to room temperature, and transfer the resulting emulsion to a 1000 mL beaker After adding 25mL of sodium hydroxide solution with a concentration of 1mol / mL to demulsify, ...

Embodiment 3

[0048] Take 24g of stearic acid and place it in a 1000mL three-necked flask. Heat to 70℃. After it is completely melted, add 240mL of aqueous solution containing 2.0g of OP-10 and 1.6g of sodium dodecylbenzene sulfonate, while vigorously mechanically stirring, fully After emulsifying for 60 minutes, the temperature is lowered to 50°C, which is recorded as Emulsion A; 6mL of styrene is placed in a 500mL three-neck flask and heated to 50°C, and an aqueous solution containing 2.0g OP-10 and 2.0g sodium dodecylbenzene sulfonate is added 200mL, emulsify for 180min under vigorous mechanical stirring, and record it as B emulsion; add B emulsion to A emulsion, after mechanical stirring at 25℃ for 180min, add 80mL of aqueous solution containing 0.6g ammonium persulfate dropwise, continue to react for 4h, then cool To room temperature, transfer the emulsion obtained from the reaction to a 1000mL beaker, add 75mL of 1mol / mL sodium hydroxide solution to demulsify, filter with suction, wash ...

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Abstract

The invention relates to a preparation method of an organic phase change energy storage composite material, which is mainly based on a two-phase interfacial polymerization method and comprises the following steps: at a certain temperature, when an oil-soluble core material is molten, emulsifying the oil-soluble core material and water by utilizing a surfactant to form small droplets; then, cooling to solidify the small droplets into small solid particles; and then, polymerizing a shell material on the surfaces of the particles to form the organic phase change energy storage composite material with a core-shell structure. Because the core material and the shell material are respectively emulsified and then mixed for reacting, thus the emulsifying effect is good; and the core material is changed into small solid particles after being cooled, thus the adsorption rate of the shell material can be improved, the coating efficiency is improved, and the physicochemical stability of the composite material is enhanced.

Description

【Technical Field】 [0001] The invention relates to the technical field of preparation of a novel functional composite material, in particular to a preparation method of a phase change energy storage material. 【Background technique】 [0002] Energy is the basis for the survival and development of human society. Most countries in the world use conventional energy as the main source. This type of energy reserves is limited and cannot be regenerated in the short term, and the storage capacity will gradually decrease as the use increases. However, with the development of society, mankind's demand for energy is increasing, and mankind's utilization rate of energy is generally not high, making the world's energy supply increasingly tight. Improving energy efficiency has become an important issue for human society, and low-carbon economy, energy-saving and emission-reduction technologies have also received great attention. Phase change materials have the ability to change their physica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F112/08C08F120/14C08F2/30C08F2/26C08F4/40B01J13/16C09K5/06
Inventor 孙蓉赵涛胡有根王依海赖茂柏
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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