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Phase-change heat-storage fabric prepared by using coaxial electrospinning technology

A coaxial electrospinning, phase-change heat storage technology, applied in textiles and papermaking, non-woven fabrics, conjugated synthetic polymer rayon, etc., can solve the problems of easy leakage, limited practical application, etc., and the method is simple reliable results

Inactive Publication Date: 2018-08-07
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

However, the problem of easy leakage in the phase transition greatly limits its practical application.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add polyethylene glycol to ethanol and stir to dissolve at room temperature for 6 hours, add VO 2 Powder, continue to stir for 24 hours to obtain a core layer solution of coaxial electrospinning, the mass concentration of polyethylene glycol in the core layer solution is 50%, VO 2 The mass concentration is 1%. 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 1mL / 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 t...

Embodiment 2

[0039] Add polyethylene glycol to ethanol and stir to dissolve at room temperature for 6 hours, add VO 2 Powder, continue to stir for 24 hours to obtain a core layer solution of coaxial electrospinning, the mass concentration of polyethylene glycol in the core layer solution is 70%, VO 2 The mass concentration is 1%. Add polyvinyl alcohol (PVA) into water and stir to dissolve at room temperature for 12 hours to obtain a shell solution for coaxial electrospinning. The mass concentration of PVA in the shell solution is 8%. 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 3mL / h, the pushing speed of the shell layer solution to 3mL / h, the receiving distance to 15cm, and the voltage to 15kV, and then perform electrospinning to obtain a therm...

Embodiment 3

[0044] Add polyethylene glycol to ethanol and stir to dissolve at room temperature for 6 hours, add VO 2 Powder, continue to stir for 24 hours to obtain a core layer solution of coaxial electrospinning, the mass concentration of polyethylene glycol in the core layer solution is 90%, VO 2 The mass concentration is 1%. Add polyvinyl alcohol (PVA) into water and stir to dissolve at room temperature for 12 hours to obtain a shell solution for coaxial electrospinning. The mass concentration of PVA in the shell solution is 5%. 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 5mL / h, the pushing speed of the shell layer solution to 5mL / h, the receiving distance to 15cm, and the voltage to 15kV, and then perform electrospinning to obtain a therm...

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Abstract

The invention provides phase-change heat-storage fabric prepared by using a coaxial electrospinning technology. A preparation method comprises the following steps that (1) phase change materials are added to a first solvent and stirred until the phase change materials are completely dissolved to obtain a core layer solution, wherein the mass concentration of the phase change materials in the corelayer solution is 30-90%; (2) polymer materials are added to a second solvent and stirred until the polymer materials are completely dissolved to obtain a shell layer solution, wherein the mass concentration of the molecular materials in the shell layer solution is 5-30%; (3) the core layer solution obtained in the first step and the shell layer solution obtained in the second step are injected into two solution channels of a coaxial electrospinning device respectively, and coaxial electrospinning parameters are adjusted for electrospinning to obtain the phase-change heat-storage fabric. The phase-change heat-storage fabric not only has the properties of phase change and heat storage, but also has the functions of intelligent temperature adjustment, intelligent color matching, anti-flame retardation, bacterium and virus resistance and the like.

Description

Technical field: [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a phase change heat storage fabric prepared by coaxial electrostatic spinning technology. Background technique: [0002] Electrospinning technology is a new type of micro-nano fiber material preparation technology developed in the past 20 years. The diameter of the prepared fiber is generally tens of nanometers to tens of microns. Because electrospinning has a simple process flow and easy adjustment of process parameters, the prepared polymer fiber has light weight, small diameter, large specific surface area, and unique network structure, so it has a wide range of applications in various fields such as energy, chemical industry, and biology. Applied prospects. [0003] 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. I...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D04H1/4382D04H1/728D01F8/16D01F8/10
CPCD04H1/4382D01F8/10D01F8/16D04H1/728
Inventor 徐刚肖秀娣陆源郇昌梦程浩亮詹勇军万溧蒲泽伟
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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