Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Processing method of nanofiber waterproof and moisture-permeable membrane with heat and humidity comfort

A technology of waterproof and moisture-permeable membranes and nanofibers, which is applied in the field of fiber membrane materials, can solve the problems of limiting material thermal and humidity comfort, poor deformation recovery performance, and poor air permeability, so as to improve water pressure resistance and moisture permeability flux, and meet thermal Effect of wet comfort requirements

Active Publication Date: 2021-08-06
吉祥三宝高科纺织有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, TPU film is generally prepared by melt extrusion process and has excellent waterproof performance, but the physical structure of the film material leads to poor air permeability and low moisture permeability, which seriously limits the thermal and wet comfort of the material; while PTFE film has excellent Waterproof and moisture permeability, but the deformation recovery performance is poor, and it is difficult to degrade after being discarded

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Processing method of nanofiber waterproof and moisture-permeable membrane with heat and humidity comfort
  • Processing method of nanofiber waterproof and moisture-permeable membrane with heat and humidity comfort

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Synthesis of hydrophobic polymer: Add 200mL of mixed solvent to the reaction kettle, preheat to 100°C, add 10g of ethyl isocyanate acrylate and 0.5g of dibenzoyl peroxide, heat to reflux, keep it warm for 4 hours, and depressurize The solvent is distilled off to obtain a hydrophobic polymer with an average degree of polymerization of 3800;

[0024] (2) Processing of nanofiber waterproof and moisture-permeable membrane: dissolving the prepared hydrophobic polymer in N,N-dimethylformamide to obtain a polymer solution with a mass concentration of 25%, and then electrospinning the polymer solution, When controlling spinning, the ambient temperature is 25°C, the relative humidity is 80%, the spinning voltage is set to 25kV, a stainless steel needle is used, the advancing speed of the syringe is 5mL / h, the fibers are collected on the grounded aluminum foil, and the receiving distance is 15cm. A nanofiber waterproof and moisture-permeable membrane is obtained.

[0025] Wh...

Embodiment 2

[0027] The difference between Example 2 and Example 1 is that the reaction time is adjusted to 5h during the synthesis of the hydrophobic polymer.

[0028] (1) Synthesis of hydrophobic polymer: Add 200mL of mixed solvent to the reaction kettle, preheat to 100°C, add 10g of ethyl isocyanate acrylate and 0.5g of dibenzoyl peroxide, heat to reflux, keep it warm for 5 hours, and depressurize The solvent is distilled off to obtain a hydrophobic polymer with an average degree of polymerization of 4300;

[0029] (2) Processing of nanofiber waterproof and moisture-permeable membrane: dissolving the prepared hydrophobic polymer in N,N-dimethylformamide to obtain a polymer solution with a mass concentration of 25%, and then electrospinning the polymer solution, When controlling spinning, the ambient temperature is 25°C, the relative humidity is 80%, the spinning voltage is set to 25kV, a stainless steel needle is used, the advancing speed of the syringe is 5mL / h, the fibers are collecte...

Embodiment 3

[0032] The difference between embodiment 3 and embodiment 2 is that the variable temperature treatment is added.

[0033] (1) Synthesis of hydrophobic polymer: Add 200mL of mixed solvent to the reaction kettle, preheat to 100°C, add 10g of ethyl isocyanate acrylate and 0.5g of dibenzoyl peroxide, heat to reflux, keep it warm for 5 hours, and depressurize The solvent is distilled off to obtain a hydrophobic polymer with an average degree of polymerization of 4300;

[0034] (2) Processing of nanofiber waterproof and moisture-permeable membrane: dissolving the prepared hydrophobic polymer in N,N-dimethylformamide to obtain a polymer solution with a mass concentration of 25%, and then electrospinning the polymer solution, When controlling spinning, the ambient temperature is 25°C, the relative humidity is 80%, the spinning voltage is set to 25kV, a stainless steel needle is used, the advancing speed of the syringe is 5mL / h, the fibers are collected on the grounded aluminum foil, a...

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
Login to View More

PUM

PropertyMeasurementUnit
percent by volumeaaaaaaaaaa
degree of polymerizationaaaaaaaaaa
Login to View More

Abstract

The invention discloses a processing method for a heat-humidity comfortable nanofiber waterproof and moisture-permeable membrane, and relates to the technical field of fiber membrane materials. The invention firstly prepares a new type of hydrophobic polymer, and utilizes the hydrophobic polymer in the structure of the hydrophobic polymer during electrospinning. The isocyanate contained in the cross-linking reaction with the water molecules in the air makes the nanofibrous membrane. The fiber membrane has a high-porosity network-like inter-adhesive structure, and uses its unique three-dimensional curved pore channel to improve water pressure resistance and moisture permeability. amount, to effectively meet the heat and humidity comfort requirements of the fabric; and the present invention adopts the dispensing composite process to realize the seamless and firm bonding of the fiber membrane and the fabric, and solves the problem of the bonding fastness between the waterproof and moisture-permeable membrane and the fabric in the laminated fabric. Poor problem, the heat and moisture comfort fabric that makes can be used in fields such as military individual combat system, aerospace, large-scale weaponry covering, outdoor protection (diving, mountaineering, skiing).

Description

Technical field: [0001] The invention relates to the technical field of fiber membrane materials, in particular to a processing method for a heat-humidity comfortable nanofiber waterproof and moisture-permeable membrane. Background technique: [0002] Waterproof and moisture-permeable fabric is a new type of fabric with waterproof and moisture-permeable membrane as the core. It can not only meet the protection needs of people in outdoor activities in harsh weather environments such as severe cold, rain, snow, and strong wind, but also meet people's comfort for clothing. Therefore, it has broad application prospects. [0003] At present, the waterproof and moisture-permeable membranes on the market are mainly hydrophilic polyurethane (TPU) membranes and biaxially oriented polytetrafluoroethylene (PTFE) hydrophobic microporous membranes. Among them, TPU film is generally prepared by melt extrusion process and has excellent waterproof performance, but the physical structure of...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D04H1/4382D04H1/4282B32B27/02B32B27/06B32B7/12
CPCB32B5/02B32B7/12B32B2262/02D04H1/4282D04H1/4382D04H1/728
Inventor 马晓飞张丽张志成
Owner 吉祥三宝高科纺织有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com