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Method for preparing polypropylene superfine fiber by utilizing electrostatic spinning technology at normal temperature

An electrospinning technology and ultra-fine fiber technology, applied in the field of electrospinning preparation, can solve the problems of limited application scope and development space, large diameter of polypropylene fibers, unable to meet market demands, etc., and achieve good market application prospects. , The effect of low production conditions and low production costs

Inactive Publication Date: 2012-07-04
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the production process of polypropylene fiber is relatively mature in industry at present, due to its good chemical stability and super strong acid and alkali resistance and solvent resistance, the existing industrial process for preparing polypropylene fiber is limited. Compared with the melt spinning method and the membrane splitting fiber method, the diameter of the polypropylene fiber prepared by this type of method is relatively large, and due to the complex production equipment and high energy consumption of this technology, its application is limited to some extent The scope and development space are far from meeting the needs of the market, so people hope to find a more convenient and low-consumption method to prepare polypropylene microfibers

Method used

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  • Method for preparing polypropylene superfine fiber by utilizing electrostatic spinning technology at normal temperature
  • Method for preparing polypropylene superfine fiber by utilizing electrostatic spinning technology at normal temperature
  • Method for preparing polypropylene superfine fiber by utilizing electrostatic spinning technology at normal temperature

Examples

Experimental program
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Effect test

Embodiment 1

[0022] In a 50ml Erlenmeyer flask, 5g of atactic polypropylene (aPP) was dissolved in 45g of chloroform (CHCl 3 ), stirred at room temperature for 48h to dissolve or disperse completely. Take another 50ml Erlenmeyer flask, dissolve 5g polystyrene (PS) in 45g dimethylformamide (DMF), stir at room temperature for 24h to dissolve completely. Mix 8g of atactic polypropylene solution with 4g of polystyrene solution and continue to stir at room temperature for 24h. Put the mixed solution into the spinneret, the inner diameter of the spinneret is 2mm, the aluminum sleeve is used as the anode, the aluminum foil is used as the cathode plate to receive the product, the distance between the two electrodes is 20cm, and the applied voltage is 20kV for electrospinning. The diameter of the obtained nanofiber is about 500-700 nm.

Embodiment 2

[0024] In a 50ml Erlenmeyer flask, 5g of atactic polypropylene (aPP) was dissolved in 45g of chloroform (CHCl 3 ), stirred at room temperature for 48h to dissolve or disperse completely. Take another 50ml Erlenmeyer flask, dissolve 5g polystyrene (PS) in 45g dimethylformamide (DMF), stir at room temperature for 24h to dissolve completely. Mix 5g of atactic polypropylene solution with 2g of polystyrene solution and continue stirring at room temperature for 24h. Put the mixed solution into the spinneret, the inner diameter of the spinneret is 2mm, the aluminum sleeve is used as the anode, the aluminum foil is used as the cathode to receive the product, the distance between the two electrodes is 20cm, and the applied voltage is 20kV for electrospinning. The diameter of the obtained nanofiber is about 550-750nm.

Embodiment 3

[0026] In a 50ml Erlenmeyer flask, 4g of atactic polypropylene (aPP) was dissolved in 46g of chloroform (CHCl 3 ), stirred at room temperature for 48h to dissolve or disperse completely. Take another 50ml Erlenmeyer flask, dissolve 10g polystyrene (PS) in 40g dimethylformamide (DMF), stir at room temperature for 24h to dissolve completely. Mix 5g of atactic polypropylene solution with 2g of polystyrene solution and continue stirring at room temperature for 24h. Put the mixed solution into the spinneret, the inner diameter of the spinneret is 2mm, the aluminum sleeve is used as the anode, the aluminum foil is used as the cathode to receive the product, the distance between the two electrodes is 20cm, and the applied voltage is 20kV for electrospinning. The diameter of the obtained nanofiber is about 350-550 nm.

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Abstract

The invention belongs to electrostatic spinning preparation technologies, in particular relates to a method for preparing a polypropylene superfine fiber by utilizing an electrostatic spinning technology at normal temperature. The polypropylene superfine fiber is prepared by selecting random polypropylene (aPP), which has favorable chemical stability of a polypropylene material and is relatively easier to dissolve by an organic solvent, as a raw material and adopting an electrospinning technology. The polypropylene superfine fiber prepared by the method has good appearance and uniform diameter, and the fiber diameter is within 200-950nm. The invention prepares the polypropylene superfine fiber at normal temperature for the first time and solves the problem on the limitation that the polypropylene fiber can only be prepared by a melt spinning and membrane split fiber forming method all the time. The method has the advantages of simple preparation process and production equipment, lowerrequirement on the production condition, convenient operation and low energy consumption; and by adopting the aPP as the raw material, sources are abundant, and the production cost is low, therefore,the invention has favorable market application prospect and is easy for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of electrospinning preparation, and in particular relates to a method for preparing polypropylene superfine fibers by using the electrospinning technology at normal temperature. Background technique [0002] Polypropylene (PP) is a thermoplastic polymer, because its products have low density, low production cost, high transparency, good chemical stability, non-toxic, easy processing, high impact strength, anti-disturbance and electrical insulation Because of its excellent performance, it is widely used in the fields of automobile industry, agriculture, medical and health materials, electronic appliances, clothing, building materials, furniture, and construction packaging, and has become the second largest variety of synthetic fibers. Polypropylene can be specifically divided into isotactic polypropylene (also known as isotactic polypropylene, iPP), syndiotactic polypropylene (also known as syndiotactic polyp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/06D01D5/00
Inventor 王策徐秀茹李响张弘楠王兆杰董博张城城
Owner JILIN UNIV
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