Three-dimensional oil-water separating material based on static spinning technology and preparation method thereof

An electrospinning technology and oil-water separation technology, which is applied in the field of three-dimensional oil-water separation materials and their preparation, can solve the problems of no mechanical elasticity, low oil absorption rate, and difficulty in maintaining oil, and achieve the effects of improved performance, high oil absorption rate, and low density.

Active Publication Date: 2015-06-03
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the electrospun fiber membrane is a two-dimensional membrane structure, its disadvantages such as low oil absorption rate, difficulty in oil retention and no mechanical elasticity limit its further development.

Method used

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  • Three-dimensional oil-water separating material based on static spinning technology and preparation method thereof
  • Three-dimensional oil-water separating material based on static spinning technology and preparation method thereof
  • Three-dimensional oil-water separating material based on static spinning technology and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Preparation of spinning solution: Weigh 2 g of polyacrylonitrile (PAN) powder and 0.3 g of graphene oxide (GO) into a 100 mL conical flask containing 20 g of dimethylformamide (DMF) solvent placed in a water bath at 60 °C, heated and stirred until dissolved, and configured as a PAN-GO mixed solution.

[0027] 2) Preparation of nanofibers: The electrospinning solution in step 1) was placed in a 10 ml syringe, and the nanofibers were collected in a plastic container filled with water as a nanofiber receiver. Spinning parameters are: voltage 15 kV, spinneret inner diameter 0.6 mm, spinning liquid flow rate 0.9 mL / h, distance from spinneret to receiving water surface 15 cm, receiving time 3 h, environmental conditions: temperature 30±5 ℃ , the relative humidity is 50±5%, and the receiver moves back and forth at a speed of 0.2 cm / s.

[0028] 3) Preparation of three-dimensional nanofibers: The nanofiber solution collected in step 2 was evenly dispersed and shaped into a b...

Embodiment 2

[0032] 1) Preparation of spinning solution: Weigh 2 g of polyacrylonitrile (PAN) powder, add it into a 100 mL Erlenmeyer flask containing 20 g of dimethylformamide (DMF) solvent, and heat it in a water bath at 60 °C Stir until dissolved and configure as a PAN mixed solution.

[0033] 2) Preparation of nanofibers: The electrospinning solution in step 1) was placed in a 10 ml syringe, and the nanofibers were collected in a plastic container filled with water as a nanofiber receiver. Spinning parameters are: voltage 15 kV, spinneret inner diameter 0.6 mm, spinning liquid flow rate 0.9 mL / h, distance from spinneret to receiving water surface 15 cm, receiving time 3 h, environmental conditions: temperature 30±5 ℃ , the relative humidity is 50±5%, and the receiver moves back and forth at a speed of 0.1 cm / s.

[0034] 3) Preparation of three-dimensional nanofibers: add 0.2 g graphene oxide and 0.2 g dopamine to the nanofiber solution collected in step 2, react for 24 h, shape it in ...

Embodiment 3

[0039] 1) Preparation of spinning solution: Weigh 2 g of polyacrylonitrile (PAN) powder and 0.5 g of hydrophobic nano-silica ions (SiO 2 ), added to a 100 mL Erlenmeyer flask containing 20 g of dimethylformamide (DMF) solvent, heated and stirred in a water bath at 60°C until dissolved, and configured as PAN-SiO 2 mixture.

[0040] 2) Preparation of nanofibers: The electrospinning solution in step 1) was placed in a 10 ml syringe, and the nanofibers were collected in a plastic container filled with water as a nanofiber receiver. Spinning parameters are: voltage 15 kV, spinneret inner diameter 0.6 mm, spinning liquid flow rate 0.9 mL / h, distance from spinneret to receiving water surface 15 cm, receiving time 3 h, environmental conditions: temperature 30±5 ℃ , the relative humidity is 50±5%, and the receiver moves back and forth at a speed of 0.2 cm / s.

[0041]3) Preparation of three-dimensional nanofibers: fully disperse and shape the nanofiber solution collected in step 2 int...

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Abstract

The invention provides a three-dimensional oil-water separating material based on the static spinning technology and a preparation method thereof, belonging to the technical field of water treatment. The method specifically comprises the following steps: (a) preparing a static spinning solution; (b) selecting a proper solvent to directly receive static spinning nano fibers to obtain a nano fiber solution; (c) shaping and freezing the nano fiber solution, and drying through a freezing drying machine to obtain the three-dimensional nano fibers; (d) pre-oxidizing, carbonizing and activating the three-dimensional nano fibers to obtain three-dimensional carbon nano fibers; (e) wrapping the three-dimensional carbon nano fiber glue with lipophilic and hydrophobic films so as to obtain the final three-dimensional oil-water separating material. According to the preparation method of the three-dimensional oil-water separating material, the composition and structure of the material are easily controlled; the mechanical performance and hydrophobic performance of the materials can be effectively improved; the oil-water separating effect is good; the material can be recycled and has a wide application prospect in the oil-water separation field.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a three-dimensional oil-water separation material based on electrospinning technology and a preparation method thereof. Background technique [0002] Petroleum is an important energy material for the survival and development of human society, and it is an important driving force for the advancement of society. However, in the process of human exploration, transportation, utilization and storage of oil, some accidents often occur, causing oil spills. Due to the strong persistence of oil pollution, wide spread, difficult disposal and great harm, once a major oil spill accident occurs on land or in the sea, it will cause waste of resources and damage to the environment. Therefore, in recent years, research and development of oil-water separation materials have been prepared attention. Oil-water separation materials can not only effectively recover oil spills, avoid the was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/22D01F9/26D01F9/21D01F9/24D01D5/00D01D10/02
Inventor 钟鹭斌郑煜铭杨跃伞
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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