A kind of centrifugal spinning preparation method of silica/polystyrene micro/nano fiber membrane

A nanofiber membrane and centrifugal spinning technology, applied in spinning solution preparation, fiber treatment, rayon manufacturing, etc., can solve problems such as pollution, low production efficiency, complex design control technology, etc., and achieve easy reaction conditions and anti-aging The effect of improved performance and simple preparation method

Active Publication Date: 2017-11-24
博森纺织科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of centrifugal spinning preparation method of silica/polystyrene micro/nano fiber membrane
  • A kind of centrifugal spinning preparation method of silica/polystyrene micro/nano fiber membrane
  • A kind of centrifugal spinning preparation method of silica/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 polystyrene (PS) (wherein the molar mass M=260000g / mol of PS) with an analytical balance and place it in a 20ml sample bottle, add 8.2g N-N dimethylformamide (DMF) dropwise, The sample bottle was sealed with raw material tape, heated to 60°C, and stirred for 24 hours to finally obtain a centrifugal spinning solution with evenly dispersed PS.

[0032] (2) adopt figure 1The centrifugal spinning device shown is used for centrifugal spinning, the set speed is 8000rpm / min, the distance between the collecting rods is 10cm, 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 pass through the collecting rods. A polystyrene (PS) micro / nanofibrous membrane was obtained.

[0033] The centrifugal spinning device used in centrifugal spinning is as follows: figure 1 with image 3 As shown, it includes a motor 1, a spinning head 2 and a collecting rod 3. The spinning head i...

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, react at 25°C for 2 hours to form a silica sol, and then drop Add 1g of methacryloxytrimethoxysilane (MPS), react at 25°C for 24 hours, repeat centrifugal dispersion 6 times (absolute ethanol is used as the dispersant), and dry at 60°C for 8 hours to obtain Hydrophobic silica with a particle size of 250-300nm is desired.

[0041] (2) Accurately weigh 1.8g polystyrene (PS) and the silicon dioxide prepared by 0.3g step (1) with an analytical balance, (wherein the molar mass M=260000g / mol of PS) is placed in a 20ml sample bottle, Add 7.9g 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 SiO 2 , PS uniformly dispersed centrifugal spinning solution.

[0042] (3) adopt figure 1 The centrifugal spinning device show...

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, react at 25°C for 2 hours to form a silica sol, and then drop Add 1g of methacryloxytrimethoxysilane (MPS), react at 25°C for 24 hours, repeat centrifugal dispersion 6 times (absolute ethanol is used as the dispersant), and dry at 60°C for 8 hours to obtain Hydrophobic silica with a particle size of 250-300nm is desired.

[0045] (2) Accurately weigh 1.8g polystyrene (PS) and the silicon dioxide prepared by 0.6g step (1) with an analytical balance, (wherein the molar mass M=260000g / mol of PS) is placed in a 20ml sample bottle, Add 7.6g 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 SiO 2 , PS uniformly dispersed centrifugal spinning solution.

[0046] (3) adopt figure 1 The centrifugal spinning device show...

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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 preparation of functional nanofibers, in particular to a silicon dioxide / polystyrene (SiO 2 / PS) Micro / nanofibrous membrane preparation method by centrifugal spinning. Background technique [0002] Superhydrophobic materials not only have self-cleaning functions, but also have anti-fog, anti-snow, anti-frost, anti-exclusion, 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 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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