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Method for preparing phase-change heat-storage fiber membrane with core-shell structure by utilizing coaxial electrospinning technology

A technology of coaxial electrospinning and phase change heat storage, which is applied in fiber processing, fiber chemical characteristics, conjugated rayon, etc., can solve problems such as easy leakage, and achieves low production cost, wide source and simple preparation method. Effect

Inactive Publication Date: 2018-09-25
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ease of leakage is one of the biggest problems encountered with paraffin-related materials today

Method used

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  • Method for preparing phase-change heat-storage fiber membrane with core-shell structure by utilizing coaxial electrospinning technology
  • Method for preparing phase-change heat-storage fiber membrane with core-shell structure by utilizing coaxial electrospinning technology
  • Method for preparing phase-change heat-storage fiber membrane with core-shell structure by utilizing coaxial electrospinning technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]Paraffin wax (melting point: 60°C) was added to toluene at room temperature and stirred for 12 hours to obtain a core layer solution for coaxial electrospinning. The mass concentration of paraffin wax in the core layer solution was 20%. Add polymethyl methacrylate (PMMA) into N,N-dimethylformamide (DMF) and stir and dissolve at room temperature for 12 hours to obtain a coaxial electrospinning shell solution. The mass concentration of PMMA in the shell solution is 20 %. Using the aluminum foil paper as the receiving substrate, the electrospinning core layer solution and the shell layer solution were respectively poured into two syringes, and the two syringes were respectively fixed on two syringe pumps. Adjust the pushing speed of the core solution to 0.5mL / h, the pushing speed of the shell solution to 1mL / h, the receiving distance to 5cm, and the voltage to 5kV, and then perform electrospinning to obtain paraffin phase change heat storage with a core-shell structure Fib...

Embodiment 2

[0041] Add paraffin (melting point: 55° C.) into toluene at room temperature and stir to dissolve for 12 hours to obtain a coaxial electrospun core layer solution. The mass concentration of paraffin in the core layer solution is 20%. Add polymethyl methacrylate (PMMA) into N,N-dimethylformamide (DMF) and stir and dissolve at room temperature for 12 hours to obtain a coaxial electrospinning shell solution. The mass concentration of PMMA in the shell solution is 20 %. Using the aluminum foil paper as the receiving substrate, the electrospinning core layer solution and the shell layer solution were respectively poured into two syringes, and the two syringes were respectively fixed on two syringe pumps. Adjust the pushing speed of the core layer solution to 0.5mL / h, the pushing speed of the shell layer solution to 1mL / h, the receiving distance to 8cm, and the voltage to 10kV, and then perform electrospinning to obtain paraffin phase change heat storage with a core-shell structure ...

Embodiment 3

[0043] Add paraffin (melting point: 50° C.) into toluene at room temperature and stir to dissolve for 12 hours to obtain a coaxial electrospun core layer solution. The mass concentration of paraffin in the core layer solution is 30%. Add polymethyl methacrylate (PMMA) into N,N-dimethylformamide (DMF) and stir and dissolve at room temperature for 12 hours to obtain a coaxial electrospinning shell solution. The mass concentration of PMMA in the shell solution is 20 %. Using the aluminum foil paper as the receiving substrate, the electrospinning core layer solution and the shell layer solution were respectively poured into two syringes, and the two syringes were respectively fixed on two syringe pumps. Adjust the pushing speed of the core layer solution to 0.5mL / h, the pushing speed of the shell layer solution to 1mL / h, the receiving distance to 10cm, and the voltage to 15kV, and then perform electrospinning to obtain paraffin phase change heat storage with a core-shell structure...

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Abstract

The invention provides a method for preparing a phase-change heat-storage fiber membrane with a core-shell structure by utilizing a coaxial electrospinning technology. The method comprises the following steps: (1) adding a phase change material into a first solvent, and stirring until completely dissolving to obtain a core layer solution; (2) adding a polymer material into a second solvent, and stirring until completely dissolving to obtain a shell layer solution; (3) injecting the core layer solution obtained in the step (1) and the shell layer solution obtained in the step (2) into two solution channels of a coaxial electrospinning device correspondingly, and adjusting coaxial electrospinning parameters for electrospinning to obtain the phase-change heat-storage fiber membrane with the core-shell structure. The preparation method of the phase-change heat-storage fiber membrane, proposed by the invention, is simple; equipment and the technology are mature; the used raw materials are non-toxic, harmless and wide in source, so that the production cost is low; and the phase-change heat-storage fiber membrane can be used for fields of energy-saving building materials, phase-change heat-storage systems, functional fabrics and the like, thereby providing a new idea for development of phase-change heat-storage materials.

Description

Technical field: [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a method for preparing a phase-change heat storage fiber membrane with a core-shell structure by using coaxial electrospinning technology. Background technique: [0002] With the gradual enhancement of people's awareness of environmental protection, the development of energy storage materials has been further promoted. Due to the advantages of high energy storage density, constant temperature, easy process control, and reusability, phase change energy storage materials have great development potential. In recent years, it has also become a research hotspot in energy utilization at home and abroad. Phase change energy storage materials can be divided into organic, inorganic and hybrid phase change energy storage materials. Inorganic materials include hydrated salts, metal alloys, etc.; organic materials include paraffins, carboxylic acids, esters, and poly...

Claims

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Application Information

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IPC IPC(8): D04H1/728D04H1/4382D01D5/34D01F8/18D01F8/10
CPCD04H1/728D01D5/34D01F8/10D01F8/18D04H1/4382
Inventor 徐刚陆源肖秀娣郇昌梦詹勇军程浩亮蒲泽伟万溧
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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