A kind of preparation method and application of nanofiber/polyurethane hydrophobic sponge

A technology of polyurethane sponge and nanofiber, applied in the direction of separation method, fiber treatment, fiber chemical characteristics, etc., can solve the problems of complex preparation process, etc., and achieve the effect of simple preparation process, good adsorption effect and wide range

Active Publication Date: 2022-02-18
ANHUI POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the present invention provides a preparation method and application of nanofiber / polyurethane hydrophobic sponge, the purpose of which is to solve the complex preparation process and avoid the use of strong toxic and harmful reagents, and to make the polyurethane sponge have the characteristics of good oil absorption effect and good repeatability

Method used

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  • A kind of preparation method and application of nanofiber/polyurethane hydrophobic sponge
  • A kind of preparation method and application of nanofiber/polyurethane hydrophobic sponge
  • A kind of preparation method and application of nanofiber/polyurethane hydrophobic sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In this example, 1.8 g of PVDF-HFP and 10 g of DMF were weighed into a 100 ml glass bottle and stirred at room temperature for 4 hours. A transparent spinning solution A was obtained.

[0051] Such as figure 1 Pour the spinning solution A into the syringe as indicated. The spinning parameters were adjusted as: spinning voltage 18kV, receiving distance 6cm, and the humidity in the spinning box 3 was adjusted to 90%. Place the cut polyurethane sponge between the receiving plate 2 and the needle of the syringe 1. Each side was spun for about 10 minutes, and turned over continuously until all sides of the polyurethane were covered by PVDF-HFP nanofibers. Obtain PVDF-HFP nanofiber / polyurethane hydrophobic sponge initial sample B.

[0052] Move the PVDF-HFP nanofiber / polyurethane hydrophobic sponge initial sample B into the oven. The parameters are set as follows: the temperature is set to 40° C., and the time is 6 hours. Remove residual solvent and water vapor, and fur...

Embodiment 2

[0055] In this example, 2.0 g of PVDF-HFP and 10 g of DMF were weighed into a 100 ml glass bottle and stirred at room temperature for 4 hours. A transparent spinning solution A was obtained.

[0056] Such as figure 1 Pour the spinning solution A into the syringe as indicated. The spinning parameters were adjusted as follows: spinning voltage 18kV, receiving distance 6cm, and the humidity in the spinning box was adjusted to 90%. Place the cut polyurethane sponge between the receiving plate 2 and the needle of the syringe 1. Each side was spun for about 10 minutes, and turned over continuously until all sides of the polyurethane were covered by PVDF-HFP nanofibers. Obtain PVDF-HFP nanofiber / polyurethane hydrophobic sponge initial sample B.

[0057] Move the PVDF-HFP nanofiber / polyurethane hydrophobic sponge initial sample B into the oven. The parameters are set as follows: the temperature is set to 40° C., and the time is 6 hours. Remove residual solvent and water vapor, a...

Embodiment 3

[0059] In this example, 1.8 g of PVDF-HFP and 10 g of DMF were weighed into a 100 ml glass bottle and stirred at room temperature for 4 hours. A transparent spinning solution A was obtained.

[0060] Such as figure 1 Pour the spinning solution A into the syringe as indicated. The spinning parameters were adjusted as follows: spinning voltage 18kV, receiving distance 6cm, and humidity in the spinning box was adjusted to 95%. Place the cut polyurethane sponge between the receiver plate and the needle of the syringe. Each side was spun for about 10 minutes, and turned over continuously until all sides of the polyurethane were covered by PVDF-HFP nanofibers. Obtain PVDF-HFP nanofiber / polyurethane hydrophobic sponge initial sample B.

[0061] Move the PVDF-HFP nanofiber / polyurethane hydrophobic sponge initial sample B into the oven. The parameters are set as follows: the temperature is set to 40° C., and the time is 6 hours. Remove residual solvent and water vapor, and furthe...

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Abstract

The invention discloses a preparation method and application of a nanofiber / polyurethane hydrophobic sponge. The preparation method includes the following steps: step 1, dissolving polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) in a solvent to form electrospinning liquid, the mass fraction of polyvinylidene fluoride-hexafluoropropylene in the electrospinning solution is 10-25%; step 2, the polyvinylidene fluoride-hexafluoropropylene nanofiber Covering the polyurethane sponge to form a hydrophobic composite sponge; step 3, drying the hydrophobic composite sponge to obtain a polyvinylidene fluoride-hexafluoropropylene nanofiber / polyurethane hydrophobic sponge. The invention has the characteristics of simple preparation process, high efficiency, avoiding the use of strong poisonous and harmful reagents, and realizing the recycling and utilization of oil substances.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a preparation method and application of a nanofiber / polyurethane hydrophobic sponge. Background technique [0002] In recent years, with the continuous development of the world economy. Humans produce a large amount of oily wastewater in daily life and industrial production. In particular, oil and organic solvent spills at sea have wreaked havoc on the environment and human health. At present, the main methods for dealing with oil spills at sea include combustion method (causing waste of crude oil and secondary pollution of combustion residues), biological oxidation method (long cycle), and chemical flocculation method (easy to cause secondary pollution). Therefore, conventional methods are easy to cause secondary pollution, and it is difficult to realize the recycling of crude oil or organic solvents. [0003] Constructing hydrophobic porous sponge ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/36D01F6/32D01D5/00B01J20/26B01J20/28B01J20/34B01J20/30C08L75/04
CPCC08J9/36D01F6/32D01D5/0084D01D5/003B01J20/262B01J20/28004B01J20/3491C08J2375/04
Inventor 刘志王宗乾赵江惠蒋志康
Owner ANHUI POLYTECHNIC UNIV
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