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Novel oil-water separation material and application method thereof

A new type of oil-water separation technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of increasing system volume, troublesome use, limited absorption and flux, etc., and achieves wide source of raw materials, simple preparation process, The effect of controllable coating thickness

Active Publication Date: 2016-08-24
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN201510696202 (a method for preparing super-hydrophobic and super-oleophilic mesh material based on one-component polyurethane) discloses the preparation of super-hydrophobic and super-oleophilic mesh by dip-coating method. Although the mesh has hydrophobic properties, oil-water When separating, it is necessary to use tools and equipment to support the mesh, which is cumbersome to use and increases the volume of the system. In addition, the small molecules on the mesh coating are easily lost and the surface structure is easily damaged, so the durability of the mesh is not high. Good for long-term use
Due to the limited oil absorption and organic solvent flux, and the insufficient mechanical strength of the sponge, its processing capacity and separation efficiency are difficult to meet the requirements of engineering applications.

Method used

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  • Novel oil-water separation material and application method thereof
  • Novel oil-water separation material and application method thereof
  • Novel oil-water separation material and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Preparation of materials

[0034] (1) Foam nickel surface pretreatment:

[0035] After treating the surface of the foamed nickel container with concentrated sulfuric acid and concentrated nitric acid at a volume ratio of 3:1, put it into an ethanol solution for ultrasonic cleaning to remove impurities such as grease and dust on the surface. The mass concentration of the ethanol solution is 75%, take it out and dry it naturally dry;

[0036] (2) Preparation of the emulsion forming the coating:

[0037] ① Grind 10 parts of PU resin, 20 parts of FEP resin, 30 parts of PTFE, 20 parts of PVDF, 8 parts of talc powder and 0.8 parts of silane coupling agent through a ball mill for 4 hours;

[0038] ② Add 80 parts of modified resin, 2 parts of PDMS, and 18 parts of carbon nanotubes into 100 parts of ethanol solvent and put them into an ultrasonic instrument for ultrasonic treatment until the powder is completely dispersed in the solvent;

[0039] (3) Spray emulsion on the ...

Embodiment 2

[0063] 1. Preparation of materials

[0064] (1) Foam copper surface pretreatment:

[0065] Sandblasting is used to quickly surface-treat the surface of foamed copper, and then put it into ethanol solution for ultrasonic cleaning to remove impurities such as grease and dust on the surface. The mass concentration of ethanol solution is 75%, take it out and dry it naturally;

[0066] (2) Preparation of the emulsion forming the coating:

[0067] ① Grind 10 parts of PU resin, 20 parts of FEP resin, 30 parts of PTFE, 20 parts of PVDF, 8 parts of talcum powder and 2.4 parts of silane coupling agent through a ball mill for 4 hours;

[0068] ② Add 80 parts of modified resin, 2 parts of PDMS, and 18 parts of carbon nanotubes to 100 parts of ethanol solvent and put them into an ultrasonic instrument for ultrasonic treatment until the powder is completely dispersed in the solvent;

[0069] (3) Spray emulsion on the surface of foamed copper:

[0070] Use a spray gun with a nozzle diamet...

Embodiment 3

[0080] 1. Preparation of materials

[0081] (1) Foam titanium surface pretreatment:

[0082] Use 7mol / L nitric acid to treat the foamed nickel surface and then put it into an ethanol solution for ultrasonic cleaning to remove impurities such as grease and dust on the surface. The ethanol solution has a mass concentration of 75%, take it out and dry it naturally;

[0083] (2) Preparation of the emulsion forming the coating:

[0084] ① Grind 28 parts of PU resin, 20 parts of PPS resin, 25 parts of PTFE, 25 parts of PVDF resin, 9.8 parts of molecular sieve and 1 part of silane coupling agent through a ball mill for 6 hours to make them evenly dispersed in the emulsion;

[0085] ② The above 98 parts of modified resin, 0.01 part of PDMS, 1.99 parts of carbon nanotubes were added to 80 parts of n-hexane solvent, and then placed in an ultrasonic instrument for ultrasonic treatment until the powder was completely dispersed in the solvent;

[0086] (3) Spray emulsion on the surface o...

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Abstract

The invention relates to a novel oil-water separation material and an application method thereof, solving the problems that the durability of an existing material is not enough and the like. The novel oil-water separation material is particularly composed of a substrate and a coating attached to the surface of the substrate; the substrate is made of one of foamed nickel, foamed copper and foamed titanium; emulsion for forming the surface coating of the substrate is composed of modified resin, an organic solvent, low-surface-energy substances and nano-particles; and the novel oil-water separation material is prepared into a container with a connector and the connector of the container is connected with an inlet of a pump to establish an oil (organic matter)-water separation system. The oil (organic matter)-water separation system still keeps very good hydrophobicity when continuously operating separation for 7 days; and the separation efficiency is very high and the separation working amount can reach more than ten thousands times of self weight.

Description

technical field [0001] The invention relates to an oil-water separation material and a method for using the material. Background technique [0002] Superhydrophobic and superoleophilic materials have different wetting properties for oil and water, and can completely separate the mixture of water and oil, so they can be used in oil-water separation systems. At present, the superhydrophobic superoleophilic materials used in the oil-water separation system mainly include sponge, stainless steel mesh, fiber cloth and so on. Chinese patent CN201510696202 (a method for preparing super-hydrophobic and super-oleophilic mesh material based on one-component polyurethane) discloses the preparation of super-hydrophobic and super-oleophilic mesh by dip coating. When separating, it is necessary to support the mesh with tools and equipment, which is cumbersome to use and increases the volume of the system. In addition, the small molecules on the mesh coating are easy to lose and the surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022C02F1/40
CPCB01D17/02C02F1/40
Inventor 汪怀远胡玥朱艳吉李洪伟王池嘉
Owner NORTHEAST GASOLINEEUM UNIV
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