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A kind of composite nano fiber mat and preparation method thereof

A technology of composite nanofibers and nanofibers, which is applied in fiber processing, textiles and papermaking, electrospinning, etc., can solve the problems of lack of research on nano-scale polytetrafluoroethylene fiber membranes, and achieve good application prospects, great adaptability, Erosion broad effect

Active Publication Date: 2020-06-16
联丰纤维制品(始兴)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some relevant personnel have carried out some research on the preparation, structural properties and applications of micron-sized PTFE fibers, but there is almost no research on nano-sized PTFE fiber membranes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A preparation method for composite nanofiber mat, comprising the following steps:

[0016] (1) Add polyhydroxyalkanoate and polyurethane to the mixed solvent of N,N-dimethylacetamide and tetrahydrofuran under stirring, continue to stir for 3~5h until completely swollen, then add polytetrafluoroethylene concentrate, Stir magnetically until completely dissolved, and stand for 24 hours before use; wherein, the mass ratio of polytetrafluoroethylene, polyhydroxyalkanoate and polyurethane is 5:10:4, and the volume ratio of N,N-dimethylacetamide and tetrahydrofuran is 4:1;

[0017] (2) Add glucose, trimethyl phosphite, allyl triethoxysilane, ethyl acetate, attapulgite, and dilauryl thiodipropionate to a mixing mixer, stir and mix evenly to obtain a mixed material ; Then the mixed material was added into a stainless steel reaction kettle, nitrogen was introduced and heated continuously, and the reaction was stirred for 30min to obtain a mixed solution; wherein 3 parts of gluco...

Embodiment 2

[0020] A kind of preparation method of composite nanofiber felt, is characterized in that: comprise the following steps:

[0021] (1) Add polyhydroxyalkanoate and polyurethane to the mixed solvent of N,N-dimethylacetamide and tetrahydrofuran under stirring, continue to stir for 3~5h until completely swollen, then add polytetrafluoroethylene concentrate, Stir magnetically until completely dissolved, and stand for 24 hours before use; wherein, the mass ratio of polytetrafluoroethylene, polyhydroxyalkanoate and polyurethane is 8:20:7, and the volume ratio of N,N-dimethylacetamide and tetrahydrofuran is 8:1;

[0022] (2) Add glucose, trimethyl phosphite, allyl triethoxysilane, ethyl acetate, attapulgite, and dilauryl thiodipropionate to a mixing mixer, stir and mix evenly to obtain a mixed material ; Then the mixed material was added into a stainless steel reaction kettle, nitrogen was introduced and heated continuously, and the reaction was stirred for 45min to obtain a mixed so...

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PUM

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Abstract

The invention provides a composite nano-fiber mat and a preparation method thereof. The preparation method comprises the following steps: firstly, adding polyhydroxyalkanoate and polyurethane into a mixed solvent of N,N-dimethylacetamide and tetrahydrofuran, then adding a polytetrafluoroethylene concentrated solution, and performing magnetic stirring till the components are dissolved completely; secondly, adding other components into a mixing stirring machine for uniformly mixing with stirring, adding the obtained mixture into a stainless steel reaction kettle, introducing nitrogen gas and heating continuously to obtain a mixed solution; thirdly, mixing the two solutions with stirring to obtain a spinning solution; lastly, feeding the obtained spinning solution into an electrostatic spinning device to prepare an electrostatic spinning membrane, drying the electrostatic spinning membrane in vacuum in a drying oven at the temperature of 60 DEG C to obtain a nano-fiber mat and performingthermal crosslinking treatment on the fiber mat to obtain the composite nano-fiber mat. The composite nano-fiber mat provided by the invention has the advantages of higher mechanical strength, highertoughness, higher hydrophilic property and higher chemical resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a composite nanofiber mat and a preparation method thereof. Background technique [0002] As a special fiber preparation technology, electrospinning has been widely used. By adjusting the process parameters of electrospinning, nanofiber materials with large specific surface area, high porosity and good flexibility can be prepared. It is widely used in drug delivery, tissue engineering, filter materials, protective clothing, sensors, catalysts and many other fields. In particular, the nanofiber drug delivery system can overcome the defects of traditional preparations, so as to meet the requirements of improving bioavailability, reducing drug dosage, and increasing drug efficacy. [0003] PTFE has extremely good chemical stability, strong acid resistance, strong alkali resistance, corrosion resistance to various chemical products, and wide temperature resista...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D01D5/00
CPCD01D5/003D04H1/728
Inventor 韩祥
Owner 联丰纤维制品(始兴)有限公司
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