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A kind of hysteresis phase change energy storage material and its preparation method

A phase change energy storage material and hysteresis technology, which are applied in heat exchange materials, chemical instruments and methods, etc., can solve the problem that phase change energy storage materials do not have temperature hysteresis, and achieve high thermal stability and simple preparation. , The effect of excellent energy storage performance

Active Publication Date: 2021-06-01
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the currently studied phase-change energy storage materials hardly have the characteristics of temperature hysteresis, that is to say, it is impossible to control the energy release and absorption of phase-change energy storage materials according to the requirements of the environment so as to achieve the purpose of regulating the ambient temperature.

Method used

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  • A kind of hysteresis phase change energy storage material and its preparation method
  • A kind of hysteresis phase change energy storage material and its preparation method
  • A kind of hysteresis phase change energy storage material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 16 g of 4-benzylphenylethyl caprate, 9 g of 2-naphthol benzyl ether, 4 g of styrene-maleic anhydride copolymer, 45 g of prepolymer of urea-formaldehyde resin, 20 g of ammonium chloride solution and 20 g of water. Mix 4-benzylphenylethyl decanoate and 2-naphthol benzyl ether uniformly, and heat to 100°C to obtain a molten mixture. Add styrene maleic anhydride copolymer emulsifier and water to the molten mixture for emulsification at a temperature of 70°C, then add the prepolymer of urea-formaldehyde resin, and then add ammonium chloride solution. After reacting for 3 hours, at 7000r / min Centrifuge under the action of a centrifuge for 30 minutes, remove the supernatant, and place the lower sediment in a 100°C drying oven to dry to obtain hysteretic phase-change energy storage material powder.

Embodiment 2

[0029] Weigh 18g of 4-benzylphenylethyl caprate, 7g of 1,2-diphenoxyethane, 5g of styrene-maleic anhydride copolymer, 50g of prepolymer of urea-formaldehyde resin, 15g of ammonium chloride solution and 15g of water. Mix 4-benzylphenylethyl decanoate and 1,2-diphenoxyethane evenly, and heat to 100°C to obtain a molten mixture. Add styrene-maleic anhydride copolymer emulsifier and water to the molten mixture for emulsification at a temperature of 70°C, then add the prepolymer of urea-formaldehyde resin, and then add ammonium chloride solution, and react for 1 hour. Centrifuge under the action of a centrifuge for 30 minutes, remove the supernatant, and place the lower sediment in a 100°C drying oven to dry to obtain hysteretic phase-change energy storage material powder.

Embodiment 3

[0031] Weigh 15 g of 4-benzylphenylethyl caprate, 10 g of bis-xylylethane, 4 g of styrene-maleic anhydride copolymer, 48 g of prepolymer of urea-formaldehyde resin, 18 g of ammonium chloride solution and 18 g of water. Mix 4-benzylphenylethyl decanoate and bis-xylylethane evenly, and heat to 100°C to obtain a molten mixture. Add styrene maleic anhydride copolymer emulsifier and water to the molten mixture for emulsification at a temperature of 70°C, then add the prepolymer of urea-formaldehyde resin, and then add ammonium chloride solution. After reacting for 3 hours, at 7000r / min Centrifuge under the action of a centrifuge for 30 minutes, remove the supernatant, and place the lower sediment in a 100°C drying oven to dry to obtain hysteretic phase-change energy storage material powder.

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Abstract

The invention discloses a phase change energy storage material with hysteresis, which is in the shape of a drop ball and includes an inner core layer and an outer shell layer, the outer shell layer wraps the outer surface of the inner core layer, and the inner core layer is 4 ‑benzylphenyl ethyl decanoate, the shell layer is a polymer material. The invention also discloses a preparation method of the phase change energy storage material with hysteresis. Compared with traditional phase change materials, the phase change energy storage material of the present invention has the characteristics of absorbing heat at high temperature (60±10°C) and releasing heat at low temperature (<0°C), and has very good temperature hysteresis characteristics; The thermal performance is excellent and the thermal stability is very high; the phase change energy storage material in the present invention is simple to prepare and low in cost, and can be used as a functional additive for coatings and textiles in the field of human life security.

Description

technical field [0001] The invention relates to the field of phase change energy storage materials, in particular to a phase change energy storage material with hysteresis. Background technique [0002] With the continuous development of social economy, limited energy and environmental pollution, the search for renewable energy has become a hot topic in the world in recent years. Thermal energy storage systems can widely collect thermal energy distributed in nature and life such as solar radiation, geothermal energy, and industrial waste heat, and play an important role in the energy structure, especially in terms of energy saving and improving the mismatch between energy supply and demand. Phase change energy storage materials absorb and release energy through the melting and crystallization of crystals, mainly in the form of sensible heat, latent heat and thermochemical reactions, which can solve the problem of energy mismatch in time and space to a certain extent. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 邹其超周青春张金枝王甦晓汪航行
Owner HUBEI UNIV
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