Polyacrylonitrile nano fiber film and thermoplastic polyurethane composite material and preparation method thereof

A thermoplastic polyurethane, nanofiber membrane technology, applied in textiles, papermaking, non-woven fabrics, etc., can solve the problems of tension, tensile strength elongation, toughness and other problems, achieve low equipment requirements, easy availability of raw materials, Simple to use effects

Inactive Publication Date: 2018-05-11
GUANGXI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing single-performance TPU films cannot meet the requirements of

Method used

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  • Polyacrylonitrile nano fiber film and thermoplastic polyurethane composite material and preparation method thereof
  • Polyacrylonitrile nano fiber film and thermoplastic polyurethane composite material and preparation method thereof
  • Polyacrylonitrile nano fiber film and thermoplastic polyurethane composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of a thermoplastic polyurethane material, specifically comprising the following steps:

[0035] (1) Preparation of polyacrylonitrile solution: Add 1.2000 grams of polyacrylonitrile with a molecular weight of 50,000 to 13.8000 grams of solvent N,N dimethylformamide at a temperature of 20°C, and mix and stir for 4 hours to obtain the mass percentage of polyacrylonitrile 8% polyacrylonitrile solution;

[0036] (2) Preparation of polyacrylonitrile nanofiber membrane: the polyacrylonitrile solution obtained in step (1) is prepared by electrospinning to obtain polyacrylonitrile nanofiber membrane; the electrospinning parameters are: voltage 8KV, spinning distance 8cm , the drum speed is 10rpm, the nozzle speed is 0.20ml / h; the diameter of the fiber prepared by electrospinning is 100nm-300nm.

[0037] (3) Preparation of thermoplastic polyurethane mixed solution: at a temperature of 240°C, dissolve thermoplastic polyurethane in an organic solvent (one or m...

Embodiment 2

[0041] A preparation method of polyacrylonitrile nanofiber film / thermoplastic polyurethane composite material, specifically comprising the following steps:

[0042] (1) Preparation of polyacrylonitrile solution: Add 1.1954g polyacrylonitrile with a molecular weight of 85000 to 8.0000g solvent N,N dimethylformamide at a temperature of 28°C, mix for 6 hours and stir to obtain the mass of polyacrylonitrile 13% polyacrylonitrile solution;

[0043] (2) Preparation of polyacrylonitrile nanofiber membrane: the polyacrylonitrile solution obtained in step (1) is prepared by electrospinning to obtain polyacrylonitrile nanofiber membrane; the electrospinning parameters are: voltage 25KV, spinning distance 12cm , the drum speed is 0, the nozzle speed is 0.65ml / h, and the diameter of the fiber prepared by electrospinning is 300nm-500nm.

[0044] (3) Preparation of thermoplastic polyurethane mixed solution: at a temperature of 240°C, dissolve thermoplastic polyurethane in an organic solvent ...

Embodiment 3

[0048] A preparation method of polyacrylonitrile nanofiber film / thermoplastic polyurethane composite material, specifically comprising the following steps:

[0049] (1) Preparation of polyacrylonitrile solution: Add 0.5973g polyacrylonitrile with a molecular weight of 130000 to 3.2827g solvent N,N dimethylformamide at a temperature of 30°C, mix for 12 hours and stir to obtain the mass of polyacrylonitrile 15% polyacrylonitrile solution;

[0050] (2) Preparation of polyacrylonitrile nanofiber membrane: the polyacrylonitrile solution obtained in step (1) is prepared by electrospinning to obtain polyacrylonitrile nanofiber membrane; the electrospinning parameters are: voltage 26KV, spinning distance 11cm , the drum speed is 440, the nozzle speed is 0.66ml / h, and the experiment is carried out for 3h; the diameter of the fiber prepared by electrospinning is 200nm~1.2um.

[0051] (3) Preparation of thermoplastic polyurethane mixed solution: at a temperature of 230°C, dissolve therm...

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Abstract

The invention discloses a preparation method of a polyacrylonitrile nano fiber film and thermoplastic polyurethane composite material. The method comprises the steps that a polyacrylonitrile nano fiber film is prepared through an electrospinning method, and a polyacrylonitrile nano fiber film reinforced thermoplastic polyurethane composite material is prepared through an impregnation method by taking a nanofiber membrane as an reinforcement. Accordingly, the preparation technology is optimized systematically, and a preparation method of the polyacrylonitrile nano fiber film reinforced thermoplastic polyurethane composite material is formed, and the bearing capacity of the composite material in the exogenic action is adjusted by controlling directional arrangement of fibers in the polyacrylonitrile fiber film. The composite material can be used for improving the characteristics of tension, tensile strength, elongation, toughness and the like of pure thermoplastic polyurethane materials,and the composite material can be used for fire-prevention pipe linings, oil delivery pipe pneumatic hoses, wires, cables, cable jackets and the like.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a polyacrylonitrile nanofiber film / thermoplastic polyurethane composite material and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is an AnBm type block copolymer and a new type of organic polymer synthetic material. Compared with traditional plastics and rubber, it has the advantages of high hardness, chemical resistance, environmental protection, easy processing, and degradability. It is widely used in shoemaking, luggage, handbags, clothing, military, toys, decorative materials and other fields. However, the existing single-performance TPU films cannot meet the requirements of special products in properties such as tension, tensile strength, elongation, and toughness. The role of nanotechnology in the field of disciplines is reflected in the fact that the development of nanotechnology has promoted the developm...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L33/20C08J5/04D04H1/728
CPCC08J5/046C08J2375/04C08J2433/20C08L75/04D04H1/728C08L33/20
Inventor 周菊英张霞蓝艳姣雷福厚许海棠赵彦芝黄钦李鹏飞
Owner GUANGXI UNIV FOR NATITIES
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