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Centrifugal spinning preparation method of silicon dioxide and polystyrene micro-nano fiber membrane

A nanofiber membrane, centrifugal spinning technology, applied in spinning solution preparation, fiber processing, rayon manufacturing and other directions, can solve the problems of complex design control technology, low production efficiency, pollution, etc., achieve easy reaction conditions, anti-aging Improved performance and high efficiency

Active Publication Date: 2016-04-20
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

Most of the superhydrophobic self-cleaning surface preparation methods require complex design and fine control technology. Among them, the preparation of micro / nano fiber membranes mainly focuses on the method of electrospinning. Electrospinning has the following inherent defects and limitations This method is commercially used on a large scale: (1) high-voltage electric field needs to be applied in the preparation process; (2) production efficiency is low; (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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  • Centrifugal spinning preparation method of silicon dioxide and polystyrene micro-nano fiber membrane
  • Centrifugal spinning preparation method of silicon dioxide and polystyrene micro-nano fiber membrane
  • Centrifugal spinning preparation method of silicon dioxide and polystyrene micro-nano fiber membrane

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Experimental program
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Effect test

Embodiment 1

[0031] (1) Accurately weigh 1.8g of polystyrene (PS) (wherein the molar mass of PS = 260000g / mol) with an analytical balance and place it in a 20ml sample bottle, add dropwise 8.2g of N-N dimethylformamide (DMF) , the sample bottle was sealed with a raw material tape, heated to 60 ° C, and stirred for 24 hours, and finally a centrifugal spinning solution with uniform PS dispersion was obtained.

[0032] (2) Adopt figure 1Centrifugal spinning was carried out on the centrifugal spinning device shown, the rotating speed was set to 8000 rpm / min, the distance of the collecting rod was 10 cm, the diameter of the spinneret hole was 0.4 mm, 5 ml of the spinning solution sample was taken in the spinning head, the motor was turned on, and the collecting rod was passed through. A polystyrene (PS) micro / nanofibrous membrane was obtained.

[0033] Centrifugal spinning devices used in centrifugal spinning such as figure 1 and image 3 As shown, it includes a motor 1, a spinning head 2 an...

Embodiment 2

[0040] (1) Use a pipette to accurately pipette 5ml of ethyl orthosilicate, dissolve it in 35ml of absolute ethanol and 2ml of deionized water, add 3ml of ammonia water dropwise, and react at 25°C for 2 hours to form a silica sol, then dropwise Add 1 g of methacryloyloxytrimethoxysilane (MPS), react at 25°C for 24 hours, repeat centrifugal dispersion 6 times (absolute ethanol for dispersant), and dry at 60°C for 8 hours to obtain The desired particle size is 250-300 nm hydrophobic silica.

[0041] (2) Accurately weigh 1.8g of polystyrene (PS) and 0.3g of the silica obtained in step (1) with an analytical balance, (wherein the molar mass of PS M=260000g / mol) is placed in a 20ml sample bottle, 7.9g of N-N dimethylformamide (DMF) was added dropwise, the sample bottle was sealed with a raw material tape, heated to 60°C, stirred for 24 hours, and finally SiO was obtained 2 , PS dispersed evenly centrifugal spinning solution.

[0042] (3) Adopt figure 1 Centrifugal spinning was ca...

Embodiment 3

[0044] (1) Use a pipette to accurately pipette 5ml of ethyl orthosilicate, dissolve it in 35ml of absolute ethanol and 2ml of deionized water, add 3ml of ammonia water dropwise, and react at 25°C for 2 hours to form a silica sol, then dropwise Add 1 g of methacryloyloxytrimethoxysilane (MPS), react at 25°C for 24 hours, repeat centrifugal dispersion 6 times (absolute ethanol for dispersant), and dry at 60°C for 8 hours to obtain The desired particle size is 250-300 nm hydrophobic silica.

[0045] (2) Accurately weigh 1.8g of polystyrene (PS) and 0.6g of the silica obtained in step (1) with an analytical balance, (wherein the molar mass of PS M=260000g / mol) is placed in a 20ml sample bottle, 7.6g of N-N dimethylformamide (DMF) was added dropwise, the sample bottle was sealed with a raw material tape, heated to 60°C, stirred for 24 hours, and finally SiO was obtained 2 , PS dispersed evenly centrifugal spinning solution.

[0046] (3) Adopt figure 1 Centrifugal spinning was ca...

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Abstract

Provided is a centrifugal spinning preparation method of a silicon dioxide and polystyrene micro-nano fiber membrane. The method comprises the following steps that 1, hydrophobic silicon dioxide is prepared, wherein silicon dioxide sol is prepared through a sol-gel method, hydrophobic modification is conducted on the prepared silicon dioxide sol by taking methacryloxy propyl trimethoxyl silane (MPS) as a modifying agent, and hydrophobic silicon dioxide is obtained; 2, a centrifugal spinning solution is prepared, wherein hydrophobic silicon dioxide prepared in the first step and polystyrene (PS) are mixed and dissolved in N,N-dimethylformamide (DMF), and the uniformly dispersed centrifugal spinning solution is obtained after stirring is conducted, wherein the mass concentrations of PS and SiO2 are 18+ / -2 wt% and 3+ / -1 wt% respectively; 3, centrifugal spinning is conducted, wherein centrifugal spinning is conducted by adopting the centrifugal spinning solution prepared in the second step, and the silicon dioxide and polystyrene (SiO2 / PS) super-hydrophobic micro-nano fiber membrane is obtained.

Description

technical field [0001] The invention belongs to the technical field of functional nanofiber preparation, and in particular relates to a silica / polystyrene (SiO 2 / PS) centrifugal spinning preparation method of micro / nanofibrous membrane. Background technique [0002] Superhydrophobic materials not only have self-cleaning functions, but also have anti-fog, anti-snow, anti-frost, anti-attachment, anti-corrosion, anti-current conduction and other functions, so they have a wide range of application prospects in various fields of social production and people's daily life. , such as froth flotation of minerals, waterproofing, washing, etc. Most of the preparation methods of superhydrophobic self-cleaning surfaces require complex design and fine control technology. The preparation of micro / nanofiber membranes mainly focuses on the method of electrospinning. Electrospinning has the following inherent limitations. The large-scale commercial use of this method is as follows: (1) hig...

Claims

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Application Information

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IPC IPC(8): D01D5/18D01D1/02D01F6/44D01F1/10
CPCD01D1/02D01D5/18D01F1/10D01F6/44
Inventor 李永强邹超邵建中
Owner 博森纺织科技股份有限公司
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