Preparation method of waterproof, moisture-permeable and temperature-adjustable intelligent nanofiber membrane

A nanofiber membrane, waterproof and moisture-permeable technology, applied in fiber processing, textiles and papermaking, non-woven fabrics, etc., can solve problems such as leakage, latent heat, low subcooling, hindering applications, etc., and achieve simple preparation process and relatively Moderate latent heat and environmental friendliness

Inactive Publication Date: 2021-01-01
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, inorganic phase change materials are limited by defects such as supercooling, phase separation, and corrosion potential.
N-octadecane has the advantages of high latent heat and low subcooling, and is a good heat storage material. However, like other solid-liquid phase change materials, the inevitable leakage during the phase change hinders its use in heat storage. field application

Method used

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  • Preparation method of waterproof, moisture-permeable and temperature-adjustable intelligent nanofiber membrane
  • Preparation method of waterproof, moisture-permeable and temperature-adjustable intelligent nanofiber membrane
  • Preparation method of waterproof, moisture-permeable and temperature-adjustable intelligent nanofiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take 0.003 g of sodium chloride and 0.15 g of carbon nanotubes and put them into a mixture of 8.0235 g of N,N-dimethylacetamide and 8.0235 g of acetone, then sonicate for 2 hours, then weigh 3.04 g of polyvinylidene fluoride and 0.76 g of polyvinyl butyral was put into the above solution, and stirred in a water bath at 50° C. for 24 hours with a magnetic stirrer until uniformly mixed to obtain a shell solution. Take 1.2 g of octadecane and put it into 2.8 g of kerosene, and mix well to obtain the core layer solution. Control the ambient temperature at 40°C, move the shell solution and the core layer into the needle tube of a 10 mL syringe, fix the syringe on the injector, connect the needle tube to the coaxial needle, and connect the coaxial needle to the high-voltage DC power supply The positive electrode is connected, the receiving drum wrapped in aluminum foil is connected to the negative electrode connected to the high-voltage DC power supply, the distance between t...

Embodiment 2

[0038] Put 0.003 g of sodium chloride and 0.1 g of carbon nanotubes into a mixture of 8.0485 g of N,N-dimethylacetamide and 8.0485 g of acetone, and then ultrasonicated for 2 hours, then weighed 3.04 g of polyvinylidene fluoride and 0.76 g of polyvinyl butyral was put into the above solution, and stirred in a water bath at 50° C. for 24 hours with a magnetic stirrer until uniformly mixed to obtain a shell solution. Take 1.2 g of octadecane and put it into 2.8 g of kerosene, and mix well to obtain the core layer solution. Control the ambient temperature at 40°C, move the shell solution and the core layer into the needle tube of a 10 mL syringe, fix the syringe on the injector, connect the needle tube to the coaxial needle, and connect the coaxial needle to the high-voltage DC power supply The positive electrode is connected, the receiving drum wrapped in aluminum foil is connected to the negative electrode connected to the high-voltage DC power supply, the distance between the ...

Embodiment 3

[0040]Take 0.003 g of sodium chloride and 0.05 g of carbon nanotubes and put them into a mixture of 8.0735 g of N,N-dimethylacetamide and 8.0735 g of acetone, then sonicate for 2 hours, then weigh 3.04 g of polyvinylidene fluoride and 0.76 g of polyvinyl butyral was put into the above solution, and stirred in a water bath at 50° C. for 24 hours with a magnetic stirrer until uniformly mixed to obtain a shell solution. Take 1.2 g of octadecane and put it into 2.8 g of kerosene, and mix well to obtain the core layer solution. Control the ambient temperature at 40°C, move the shell solution and the core layer into the needle tube of a 10 mL syringe, fix the syringe on the injector, connect the needle tube to the coaxial needle, and connect the coaxial needle to the high-voltage DC power supply The positive electrode is connected, the receiving drum wrapped in aluminum foil is connected to the negative electrode connected to the high-voltage DC power supply, the distance between th...

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Abstract

The invention discloses a preparation method of a waterproof, moisture-permeable and temperature-adjustable intelligent nanofiber membrane. The preparation method comprises the following steps of taking a mixture of polyvinylidene fluoride (PVDF) doped with carbon nanotubes (CNTs) and polyvinyl butyral (PVB) as a shell layer, taking n-octadecane as a core layer, and preparing the waterproof, moisture-permeable and temperature-adjustable intelligent nanofiber membrane with a skin-core structure through a coaxial electrostatic spinning method. According to the preparation method, the nano intelligent fiber is non-toxic, excellent in waterproof and moisture permeable performance, moderate in latent heat of phase change, high in mechanical strength and simple in technological process, and hasa wide application prospect.

Description

technical field [0001] The invention relates to the technical field of intelligent nano-material production, in particular to a preparation method of a waterproof, moisture-permeable, temperature-adjustable intelligent nanofiber membrane. Background technique [0002] As the "second skin" of the human body, the waterproof and moisture-permeable membrane can evaporate the sweat of the human body while resisting the penetration of external water droplets, avoiding the discomfort caused by the accumulation of sweat. At present, it has been widely used in the fields of protective clothing, construction and separation membrane. [0003] Phase change materials refer to substances that change the state of matter and provide latent heat under the condition of constant temperature. At present, it has been applied in solar energy storage, textile and clothing, food packaging, construction and other fields. Phase change materials include inorganic, organic compounds and mixtures of o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D04H1/4382D01D5/00
CPCD01D5/0015D04H1/4382D04H1/728
Inventor 张明伊利强姚菊明祝国成
Owner ZHEJIANG SCI-TECH UNIV
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