Device and method for preparing polysulfonamide nanometer fiber nets by means of airflow-electrostatic combination

A technology of nanofiber web and polysulfone amide, which is applied in fiber processing, stretch spinning, textiles and papermaking, etc., can solve the problems of high viscosity of polysulfone amide, low yield of electrospinning method, poor conductivity, etc., and achieve aggravated Evaporation speed, good market prospect, effect of droplet area reduction

Active Publication Date: 2012-07-04
SHANGHAI UNIV OF ENG SCI
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  • Application Information

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Problems solved by technology

[0007] Aiming at the problems of high viscosity of polysulfone amide, poor conductivity and low yield of electrospinning method, the present invention proposes a device and method for preparing polysulfone amide nanofibrous web by airflow-electrostatic combination

Method used

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  • Device and method for preparing polysulfonamide nanometer fiber nets by means of airflow-electrostatic combination
  • Device and method for preparing polysulfonamide nanometer fiber nets by means of airflow-electrostatic combination
  • Device and method for preparing polysulfonamide nanometer fiber nets by means of airflow-electrostatic combination

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Embodiment 1

[0030] Such as figure 1 As shown, the air flow-electrostatic combination of the present invention prepares the device of polysulfone amide nanofibrous web, including liquid storage tank 100, gas chamber 200, electrostatic generator 300 and receiving device 400;

[0031] The liquid storage tank is connected to the external liquid supply device 120 through the infusion tube 110. The inside of the liquid storage tank is provided with a rod-shaped sensor 130. The rod-shaped sensor is connected to the ultrasonic generator 140. Several spinnerets 150 are arranged at the bottom of the liquid storage tank. The inner hole diameter is 0.4-1mm, the length is 8-12mm, and the spacing is 10mm; the distance between the spinneret and the receiving device is controlled at 5-25cm.

[0032] The gas chamber 200 is arranged outside the liquid storage tank and connected with the gas supply device. The gas supply device is a nitrogen cylinder 210. The gas chamber is connected to the gas chamber thro...

Embodiment 2

[0044] This embodiment is basically the same as Embodiment 1, the difference is that no air flow is introduced into this embodiment. Observing the spinning process, it is found that the number of droplets is large and the phenomenon of needle blockage is serious. The fiber external structure morphology of the prepared polysulfone amide nanofiber web is as follows: figure 2 (b). The average diameter of the polysulfoneamide nanofibers prepared by testing is 85nm, the dispersion of fiber diameter distribution is small, mainly concentrated at 75-150nm, and the specific surface area of ​​the fibers is 35.6m 2 / g, the output of polysulfoneamide nanofibers is 6.1mg / h.

Embodiment 3

[0046] This embodiment is basically the same as Embodiment 1, the difference is that the ultrasonic generator is not turned on in this embodiment. The fiber external structure morphology of the prepared polysulfone amide nanofiber web is as follows: image 3 As shown, bead fibers can be found, and the output of polysulfoneamide nanofibers is 2.5mg / h.

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Abstract

The invention discloses a device and a method for preparing polysulfonamide nanometer fiber nets by means of airflow-electrostatic combination. The device comprises a liquid storage tank, an air chamber, an electrostatic generator and a receiving device, a plurality of spinnerets are arranged at the bottom of the liquid storage tank, the air chamber is arranged outside the liquid storage tank, air outlets in the number equal to that of the spinnerets at the bottom of the liquid storage tank are arranged at the bottom of the air chamber, the spinnerets are arranged inside the air outlets, an electrode with multiple pins are led from the positive electrode of the electrostatic generator to be connected with the spinnerets, and a lead is led from the negative electrode of the electrostatic generator to be connected with the receiving device. The method includes steps of combining the airflow method and the electrostatic spinning method effectively to prepare the polysulfonamide nanometer fiber nets. By the device and the method for preparing the polysulfonamide nanometer fiber nets, the specific surface area of the polysulfonamide nanometer fibers is enlarged greatly, the problem of blockage of existing electrostatic spinning needles due to inflow of the airflow is alleviated greatly, and spinning efficiency is improved. Besides, nanometer fibers can be prepared at the normal temperature directly, so that production procedures are simplified and production cost is saved.

Description

technical field [0001] The invention belongs to the field of preparation of polysulfone amide, and in particular relates to a spinning device and method for preparing polysulfone amide nano fiber web. Background technique [0002] Polysulfone amide fiber (PSA fiber for short), also known as polysulfone fiber, scientifically named polyphenylsulfone terephthalamide fiber, belongs to the para-aramid fiber series, and is a high-performance synthetic fiber independently developed by my country with independent intellectual property rights. Its main features are excellent heat resistance and thermal stability, high flame retardancy, and good chemical stability. Except for several very polar solvents such as concentrated sulfuric acid, it has good chemical resistance at room temperature. stability. As a new type of textile material, polysulfoneamide fiber has the characteristics of high strength, light weight and high temperature resistance, so it is used in the aerospace field, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01D5/14
Inventor 辛斌杰陈文杰吴湘济
Owner SHANGHAI UNIV OF ENG SCI
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