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Preparation method of super-hydrophobic nanofiber membrane

A technology of nanofiber membrane and composite nanofiber, which is applied in fiber processing, spinning solution preparation, and conjugated synthetic polymer rayon, etc., can solve the problems of high energy consumption, complex process, high material cost, and achieve energy consumption Low, simple preparation process, low equipment requirements

Active Publication Date: 2020-03-31
ANHUI POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this invention are that the process is more complicated, the energy consumption is higher, and the cost of materials is high.

Method used

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  • Preparation method of super-hydrophobic nanofiber membrane
  • Preparation method of super-hydrophobic nanofiber membrane
  • Preparation method of super-hydrophobic nanofiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In this example, 1.87g of simethicone and 1.4g of polymethyl methacrylate (PMMA) were dissolved in N,N-dimethylformamide (DMF) / acetone (Acetone) / n-hexane ternary solvent (The total mass is 10g, and the mass ratio of the three is 6:6:1). Then, it was stirred at room temperature for more than 5 hours to obtain a transparent electrospinning solution.

[0038] Pour the spinning solution obtained above into the syringe. The spinning conditions are: voltage 17kV, receiving distance 20cm, relative humidity 56%, temperature 22°C, flow rate 1.2ml / h. The simethicone / PMMA nanofiber film can be initially obtained by collecting the nanofibers with a drum receiving device.

[0039] Put the simethicone oil / PMMA nanofiber membrane initially obtained above into an oven, the temperature of the oven is 40° C., and the standing time is 5 hours. After natural cooling, a simethicone / PMMA superhydrophobic nanofiber membrane is obtained.

[0040] Due to the addition of simethicone and the ...

Embodiment 2

[0044] In this example, 1.63g of simethicone and 1.4g of polymethyl methacrylate (PMMA) were dissolved in N,N-dimethylformamide (DMF) / acetone (Acetone) / n-hexane ternary solvent (The total mass is 10g, and the mass ratio of the three is 6:6:1). Then, it was stirred at room temperature for more than 5 hours to obtain a transparent electrospinning solution.

[0045] Pour the spinning solution obtained above into the syringe. The spinning conditions are: voltage 17kV, receiving distance 20cm, relative humidity 55%, temperature 23°C, flow rate 1.2ml / h. The simethicone / PMMA nanofiber film can be initially obtained by collecting the nanofibers with a drum receiving device.

[0046] Put the simethicone oil / PMMA nanofiber membrane initially obtained above into an oven, the temperature of the oven is 40° C., and the standing time is 5 hours. After natural cooling, a simethicone / PMMA superhydrophobic nanofiber membrane is obtained.

Embodiment 3

[0048] In this example, 2.1 g of simethicone and 1.4 g of polymethyl methacrylate (PMMA) were dissolved in N, N-dimethylformamide (DMF) / acetone (Acetone) / n-hexane ternary solvent (The total mass is 10g, and the mass ratio of the three is 6:6:1). Then, it was stirred at room temperature for more than 5 hours to obtain a transparent electrospinning solution.

[0049] Pour the spinning solution obtained above into the syringe. The spinning conditions are: voltage 17kV, receiving distance 20cm, relative humidity 57%, temperature 21°C, flow rate 1.2ml / h. The simethicone / PMMA nanofiber film can be initially obtained by collecting the nanofibers with a drum receiving device.

[0050] Put the preliminarily obtained simethicone oil / PMMA nanofiber membrane into an oven, the temperature of the oven is 40° C., and the standing time is 5 hours. After natural cooling, a simethicone / PMMA superhydrophobic nanofiber membrane is obtained.

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Abstract

The invention discloses a preparation method of a super-hydrophobic nanofiber membrane. The preparation method comprises the following steps of step 1, dissolving dimethyl silicone oil and polymethylmethacrylate in a ternary organic solvent to obtain an electrostatic spinning solution, wherein the mass fraction of the polymethyl methacrylate in the electrostatic spinning solution is 12-16%, and the mass ratio of the dimethyl silicone oil to the polymethyl methacrylate is (7-9) to 6; step 2, preparing a dimethyl silicone oil / polymethyl methacrylate composite nanofiber membrane by adopting theelectrostatic spinning solution in the step 1 through an electrostatic spinning process; and carrying out drying and cooling on the dimethyl silicone oil / polymethyl methacrylate composite nanofibermembrane prepared in the step 2 to obtain a bead-shaped structure super-hydrophobic nanofiber membrane. The super-hydrophobic nanofiber membrane is obtained through a one-step method, the preparationprocess is simple, and the nanofiber membrane has the characteristics of relatively high super-hydrophobic durability.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a preparation method of a superhydrophobic nanofiber membrane. Background technique [0002] Oil-water separation is related to economic benefits and human living environment, and is an important topic in the current social development. In actual production and scientific research, it has always been a hot issue. [0003] In recent years, compared with traditional oil-water separation methods such as combustion method, sedimentation method, biological treatment and other methods, membrane separation technology has the characteristics of simple equipment, low energy consumption, wide application range, good controllability, and high separation efficiency. Show broad application prospects. [0004] According to the wetting characteristics of the membrane, the current oil-water separation membranes include hydrophobic / oleophilic membranes and hydrophilic / u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/007D04H3/033D01D5/00D01D1/02D01F8/10D01F8/16
CPCD01D1/02D01D5/003D01F8/10D01F8/16D04H3/007D04H3/033D10B2401/021
Inventor 刘志李伟赵江惠张广知蔡丽萍
Owner ANHUI POLYTECHNIC UNIV