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

Preparation method of thermoplastic polyurethane nanofiber membrane

A thermoplastic polyurethane and nanofiber membrane technology, which is applied in fiber treatment, fabric drying equipment, heating/cooling fabric, etc., can solve the problems of not having high moisture permeability and inability to block liquids, etc., to improve membrane quality and production efficiency , good deposition performance and strong flexibility

Inactive Publication Date: 2018-05-18
QINGDAO UNIV
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a preparation method of thermoplastic polyurethane nanofiber film, which solves the problem in the prior art that the thermoplastic polyurethane film cannot block liquid and does not have high moisture permeability

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
  • Preparation method of thermoplastic polyurethane nanofiber membrane
  • Preparation method of thermoplastic polyurethane nanofiber membrane
  • Preparation method of thermoplastic polyurethane nanofiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] like figure 1 As shown, the preparation of a thermoplastic polyurethane nanofiber film, the rolled base fabric 1 moves forward with the rotating wheel, and the tension wheel stretches the base fabric 1 straight into the high-voltage power field 2, and the high-voltage power field 2 is equipped with two The two electrodes are collecting electrode 3 and spinning electrode 4 respectively. The spinning solution is sprayed from spinning electrode 4 and sprayed to collecting electrode 3. When the base cloth 1 passes through the high-voltage power field 2, the spinning solution is deposited on it. The cloth 1 continues to move forward, enters the heating device 5 for drying, and then enters the heat setting equipment 6 after drying. After the base cloth 1 comes out, it is gradually cooled by the air, and finally enters the winding equipment 7 to obtain a thermoplastic polyurethane nanofiber film. .

[0023] like figure 2 Shown, a kind of preparation method of thermoplastic ...

Embodiment 2

[0028] like figure 2 Shown, a kind of preparation method of thermoplastic polyurethane nanofiber membrane comprises the following steps:

[0029] 1) Prepare polyurethane spinning solution; the preparation method of polyurethane spinning solution: weigh N,N-dimethylformamide and tetrahydrofuran in a mass ratio of 1:1 and mix evenly to prepare a solvent system, and add polyurethane powder to the In the above solvent system, the rotating speed is 50r / h, stirred at 30°C for 6h, the concentration of the obtained spinning solution is 12%, cooled to room temperature, and set aside;

[0030] 2) Deposit the polyurethane spinning solution on the nanofiber membrane by using the needle-free electrospinning technology to obtain a spider web-like fiber membrane; the electrospinning technology utilizes two electrode wires to construct an electrostatic field from the positive pole to the negative pole, The small droplets of polyurethane spinning solution are charged, stretched, deformed, an...

Embodiment 3

[0033] like figure 2 Shown, a kind of preparation method of thermoplastic polyurethane nanofiber membrane comprises the following steps:

[0034] 1) Prepare polyurethane spinning solution; the preparation method of polyurethane spinning solution: weigh N,N-dimethylformamide and tetrahydrofuran in a mass ratio of 1:2 and mix evenly to prepare a solvent system, and add polyurethane powder to the In the above solvent system, the rotating speed is 50r / h, stirred at 30°C for 6h, the concentration of the obtained spinning solution is 12%, cooled to room temperature, and set aside;

[0035] 2) Deposit the polyurethane spinning solution on the nanofiber membrane by using the needle-free electrospinning technology to obtain a spider web-like fiber membrane; the electrospinning technology utilizes two electrode wires to construct an electrostatic field from the positive pole to the negative pole, The small droplets of polyurethane spinning solution are charged, stretched, deformed, an...

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of a thermoplastic polyurethane nanofiber membrane and solves the technical problem that the thermoplastic polyurethane membrane of the prior art cannot block liquid and has no high moisture permeation. The preparation method of the thermoplastic polyurethane nanofiber membrane is characterized by comprising the steps of 1) preparing a polyurethane spinning liquid; 2) depositing the polyurethane spinning liquid on a nanofiber membrane by means of a needle-free electrostatic spinning technique to obtain a web-like fiber membrane; 3) post-finishing thepolyurethane spinning liquid. An electrostatic field constructed with two needle-free electrode wires allows thermoplastic polyurethane electrostatic spinning to be performed to obtain a membrane that has morphology of a spiker web, fiber threads are about 200 nm in diameter, and the membrane has high porosity and large specific surface area.

Description

technical field [0001] The invention relates to the technical field of polymer functional film preparation, in particular to a preparation method of a thermoplastic polyurethane nanofiber film. Background technique [0002] Thermoplastic polyurethane is a linear block copolymer with soft and hard segments coexisting, and there is an obvious microphase separation structure. Thermoplastic polyurethane film has the characteristics of high elongation, high strength, high wear resistance and low temperature resistance, and has its unique applications in medical treatment, electronics, chemical industry, construction, national defense and textile. At present, thermoplastic polyurethane films can be divided into two processing methods: solvent-free processing (film blowing, coating, extrusion), organic solvent processing (coating, transfer coating). There is a defect in the thin films prepared in these two ways, which has not been well solved in the prior art. [0003] The above-...

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 Applications(China)
IPC IPC(8): D04H1/4358D04H1/728D01D5/00D06C7/02
CPCD01D5/0069D04H1/4358D04H1/728D06C7/02D06C2700/09
Inventor 李显波韩光亭张元明姜伟
Owner QINGDAO UNIV
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