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A kind of titanium dioxide/polyvinylidene fluoride micro/nano fiber membrane and its centrifugal spinning preparation method

A technology of polyvinylidene fluoride and nanofiber membrane, which is applied in fiber processing, conjugated synthetic polymer artificial filament, filament/wire forming, etc., can solve problems such as low production efficiency and pollution, and achieve practical improvement, The effect of easy reaction conditions and simple preparation method

Active Publication Date: 2019-05-14
博森纺织科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the study of cost, scale and controllability of electrospinning is still far from practical and application requirements. At present, there are several inherent defects in electrospinning that limit the large-scale commercial use of this method: (1) High voltage electric field needs to be applied during the preparation process; (2) Low production efficiency; (3) The solution requires a certain proportion of solvent to make the solution have a certain conductivity and cause pollution

Method used

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  • A kind of titanium dioxide/polyvinylidene fluoride micro/nano fiber membrane and its centrifugal spinning preparation method
  • A kind of titanium dioxide/polyvinylidene fluoride micro/nano fiber membrane and its centrifugal spinning preparation method
  • A kind of titanium dioxide/polyvinylidene fluoride micro/nano fiber membrane and its centrifugal spinning preparation method

Examples

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Embodiment 1

[0039] A method for preparing titanium dioxide / polyvinylidene fluoride micro / nano fiber membrane by centrifugal spinning, the specific steps are as follows:

[0040] (1) Accurately weigh 0.6g polyvinylidene fluoride (PVDF) (the molar mass of PVDF M=500000~600000g / mol) and 0.12g titanium dioxide (TiO 2 ) was placed in a 20ml sample bottle, 1.584g N-N dimethylformamide (DMF) and 3.696g acetone were added dropwise, the sample bottle was sealed with raw material tape, heated to 60°C and stirred for 24 hours to finally obtain TiO 2 , PVDF evenly dispersed centrifugal spinning solution.

[0041] (2) adopt figure 1 and Figure 5 The centrifugal spinning device shown is used for centrifugal spinning, the set speed is 8000rpm, the distance between the collecting rods is 12cm, and the diameter of the spinneret holes is 0.4mm. Take 5ml of the spinning solution sample in the spinning head, turn on the motor, and obtain TiO2 through the collecting rods. 2 / PVDF micro / nano fiber membrane...

Embodiment 2

[0049] A method for preparing titanium dioxide / polyvinylidene fluoride micro / nano fiber membrane by centrifugal spinning, the specific steps are the same as in Example 1, the difference is: (1) Accurately weigh 0.6g polyvinylidene fluoride (PVDF) with an analytical balance (where the molar mass of PVDF M=600000g / mol) and 0.24g titanium dioxide (TiO 2 ) into a 20ml sample bottle, add 3.612g of acetone and 1.548g of N-N dimethylformamide (DMF) dropwise, seal the sample bottle with raw material tape, heat to 60°C, and stir for 24 hours to finally obtain TiO 2 , PVDF evenly dispersed centrifugal spinning solution.

[0050] (2) adopt figure 1 The centrifugal spinning device shown is used for centrifugal spinning, the set speed is 8000rpm, the distance between the collecting rods is 12cm, and the diameter of the spinneret holes is 0.4mm. Take 5ml of the spinning solution sample in the spinning head, turn on the motor, and obtain TiO2 through the collecting rods. 2 / PVDF micro / nano...

Embodiment 3

[0052] A method for preparing titanium dioxide / polyvinylidene fluoride micro / nano fiber membrane by centrifugal spinning, the specific steps are the same as in Example 1, the difference is: (1) Accurately weigh 0.6g polyvinylidene fluoride (PVDF) with an analytical balance (where the molar mass of PVDF M=600000g / mol) and 0.36g titanium dioxide (TiO 2 ) into a 20ml sample bottle, add 3.528g of acetone and 1.512g of N-N dimethylformamide (DMF) dropwise, seal the sample bottle with raw material tape, heat to 60°C, and stir for 24 hours to finally obtain TiO 2 , PVDF evenly dispersed centrifugal spinning solution.

[0053] (2) adopt figure 1 The centrifugal spinning device shown is used for centrifugal spinning, the set speed is 8000rpm, the distance between the collecting rods is 12cm, and the diameter of the spinneret holes is 0.4mm. Take 5ml of the spinning solution sample in the spinning head, turn on the motor, and obtain TiO through the collecting rods. 2 / PVDF micro / nano ...

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Abstract

The invention belongs to the technical field of functional nano fiber, and particularly relates to a titanium dioxide / polyvinyldene fluoride (TiO2 / PVDF) micron / nano fiber membrane and a centrifugal spinning preparation method thereof. The centrifugal spinning preparation method includes following steps: (1), preparing a centrifugal spinning : mixing and dissolving anatase-type TiO2 and PVDF in a spinning solvent, and stirring to obtain the centrifugal spinning which is dispersed uniformly, wherein mass concentrations of PVDF and TiO2 are 8-14wt% and 2-8wt% respectively; (2), centrifugally spinning: adopting the centrifugal spinning solution prepared in the step (1) for centrifugal spinning to obtain the TiO2 / PVDF micron / nano fiber membrane having dye degrading performance, wherein the spinning solvent is chosen from DMF and acetone.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional nanofibers, in particular to a titanium dioxide / polyvinylidene fluoride (TiO 2 / PVDF) micro / nano fiber membrane and its preparation method by centrifugal spinning. Background technique [0002] Dyeing and finishing is a key link for textiles to achieve novelty, high-grade, functionalization, increase added value and international competitiveness, but it is also a link with high energy consumption, high emissions and high pollution. While the large-scale dyeing and finishing industry in Zhejiang Province has made great contributions to the economic development of Zhejiang Province, it has also caused a negative impact on the resources and environment of Zhejiang Province that cannot be ignored. With the development of the printing and dyeing industry, organic pollutants such as dyes and dye solvents have become a major type of environmental pollutants. Traditional dye wastewater ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4382D01D5/18D01F8/10
CPCD01D5/18D01F8/10D04H1/4382D10B2321/042
Inventor 李永强李亚男邹超蒋丽源刘浩天李秋莹
Owner 博森纺织科技股份有限公司