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Method for preparing nanofiber aggregate and pretreatment device

A pretreatment device and nanofiber technology, which is applied in fiber treatment, textile material yarn guide device, liquid/gas/steam fiber/sliver/roving treatment, etc. It can solve the problem of loose combination of drawn filaments and nanofibers, etc. question

Inactive Publication Date: 2017-01-11
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a method and a pretreatment device for preparing nanofiber aggregates, which can change the problem of loose combination of drawing filaments and nanofibers in the prior art, and effectively enhance the structural strength of nanofiber aggregates; the nanofibers prepared by the method The introduction of functional materials into the aggregate makes the nanofiber aggregate have a more complex composite structure with specific functional value

Method used

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  • Method for preparing nanofiber aggregate and pretreatment device
  • Method for preparing nanofiber aggregate and pretreatment device

Examples

Experimental program
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Effect test

Embodiment 1

[0031] The above-mentioned drawing filament pretreatment device is used to pretreat the drawing filament, the pretreatment liquid used is water, and the pretreatment time of the drawing filament in water is 10 seconds.

[0032] Then the pretreated drawn filaments are introduced into the electrospinner, the high-voltage electrostatic generator is turned on, and the polyurethane solution is used as the electrospinning solution for electrospinning to form polyurethane nanofibers. The nanofiber made of polyurethane is connected to the receiver and the drawing filament, the receiver is kept rotating at a certain speed, the nanofiber made of polyurethane is wound on the drawing filament, and the nanofiber assembly is obtained after further twisting by the roller.

[0033] Due to the moisture attached to the drawing filaments due to the pretreatment, the combination of drawing filaments and nanofibers in the nanofiber assembly prepared by subsequent twisting is more firm, and the stre...

Embodiment 2

[0035] The above-mentioned drawing filament pretreatment device is used to pretreat the drawing filament, the pretreatment liquid used is 20wt% carbon nanotube dispersion liquid, and the pretreatment time is 20s. The pretreated drawing filaments are drawing filaments with a layer of carbon nanotubes attached to the surface. The drawn filaments are introduced into the electrospinner, and then the electrostatic high voltage generator is turned on, and the electrospinning is performed using the polyurethane solution as the electrospinning solution to form polyurethane nanofibers. Polyurethane nanofibers are formed and attached between the draw filaments and receivers. Keeping the receiver rotating at a certain speed, the polyurethane nanofibers are wound onto the drawing filaments, and the nanofiber aggregates are obtained after further twisting treatment by rollers.

[0036] The nanofiber assembly prepared after the above-mentioned drawing filament pretreatment has a carbon nan...

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Abstract

The invention relates to preparation of nanofiber aggregates and belongs to the textile field. A method for preparing the nanofiber aggregate is characterized by comprising the following steps: step one, a traction filament is immersed in a pretreatment liquid for certain time; step two, nanofibers are formed around the traction filament through electrostatic spinning with the traction filament as the central axis and are deposited between the traction filament and a receiver; step three, the receiver rotates and drives the nanofibers to rotate around the traction filament at certain rotation speed, the traction filament is dragged, the nanofibers wind around the outer layer of the traction filament, and the nanofiber aggregate is formed. When the traction filament is treated with different pretreatment liquids, the binding tightness of the nanofiber aggregate can be improved, a composition layer of a functional material can be even added, and the nanofiber aggregate is enabled to have specific functions. The invention further provides a pretreatment device for pretreating the traction filament.

Description

technical field [0001] The invention relates to the field of textiles, in particular to a method and a pretreatment device for preparing nanofiber aggregates. Background technique [0002] Electrospinning mainly uses liquid in a high-voltage electric field to form Taylor cones, and then extends under the action of electrostatic force to form nanofibers. The formed nanofibers are collected to form nanofiber aggregates. There are many collection methods for preparing nanofiber aggregates in the prior art. For example, in US Patent No. 6,106,913-A, the airflow deposition method is used to guide the nanofibers to the drawn filaments. It is then wound to form nanofiber-wrapped draw filaments. The follow-up improvement technology uses a horn-shaped receiver to optimize the collection method of nanofibers, such as Chinese patent 104032423A, which improves the preparation efficiency of nanofiber aggregates. [0003] The methods for preparing nanofiber aggregates in the prior art a...

Claims

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Application Information

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IPC IPC(8): D01D5/00D02G3/04D06M13/224D06M13/352D06B3/02D06B23/06D06B23/20
CPCD01D5/0076D02G3/04D06B3/02D06B23/06D06B23/20D06M13/2246D06M13/352
Inventor 辛斌杰靳世鑫刘岩陈卓明
Owner SHANGHAI UNIV OF ENG SCI
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