Preparation method and application of super-hydrophobic super-oleophylic sponge material

A super-lipophilic and super-hydrophobic technology, which is applied in the separation and recovery of oil or organic solvents and water, and the preparation of super-hydrophobic and super-oleophilic sponge materials, can solve the problem of reducing the hydrophilic groups on the surface of sponges to obtain super-hydrophobicity, Increase the service life of sponge materials, affect recycling and other issues, achieve excellent hydrophobic properties, prolong service life, and improve application effects

Inactive Publication Date: 2016-04-13
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent (CN104324524A) discloses a preparation method of super-hydrophobic, super-oleophilic and ultra-light sponge. The two steps of functionalization of melamine sponge material and curing reaction after treatment are completed, and the hydrophilicity of the surface of the sponge is significantly reduced by functionalization treatment. However, the use of binary siloxane hydrolysis system results in poor bonding strength between the nanoparticle coating and the base material, which affects its recyclable use.
Chinese patent (CN103804714A) discloses a superhydrophobic superoleophilic sponge and its preparation method and application. The polymer sponge is soaked in a fluorine-containing polyacrylate / silicon dioxide ethanol dispersion and then dried to obtain a superhydrophobic superoleophilic sponge. , by coating fluorine-containing acrylate polymers, the silica can be fixed on the sponge, which increases the service life of the sponge material. However, in the treatment of large-scale oily sewage and the cleaning of crude oil spills, the recovery of a large amount of sponge material itself is also a huge problem. challenges, making the application of these methods subject to some limitations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Modified Fe 3 o 4 Particle preparation

[0035] In terms of parts by mass, 20 parts of nano-Fe 3 o 4 , 20 parts of potassium hydroxide and 100 parts of water are added to the reaction kettle with a stirring paddle, stirred at a speed of 300 rpm for 40 minutes, the temperature of the water bath is slowly raised to 75 °C, and 10 parts of ethyl orthosilicate After adding slowly within 2 hours, add 10 parts of methacryloxypropyl trimethoxysilane slowly within 2 hours, keep stirring for 2 hours after the dropwise addition, and then separate the prepared solution under an external magnetic field, The upper layer was removed, and the particles in the lower layer were alternately washed 5 times with absolute ethanol and distilled water, and then dried in a 60°C drying oven for 12 hours to obtain modified Fe 3 o 4 particle.

[0036] (2) Preparation of superhydrophobic and superoleophilic sponge materials

[0037] 30 parts of modified Fe 3 o 4 Particles, 50 parts of ...

Embodiment 2

[0040] (1) Modified Fe 3 o 4 Particle preparation

[0041] In parts by mass, 50 parts of nano-Fe 3 o 4 , 40 parts of ammonia water and 300 parts of water were added to the reaction kettle with a stirring paddle, stirred at a speed of 500 rpm for 30 minutes, and the temperature of the water bath was slowly raised to 80°C, and 30 parts of ethyl orthosilicate was added in 4 hours After slowly adding 25 parts of tridecafluorooctyltrimethoxysilane within 4 hours, keep stirring for 6 hours after the dropwise addition, then separate the prepared solution under an external magnetic field, and remove the supernatant , the lower particles were alternately washed with absolute ethanol and distilled water for 5 times, and then dried in a drying oven at 55°C for 18 hours to obtain modified Fe 3 o 4 particle.

[0042] (2) Preparation of superhydrophobic and superoleophilic sponge materials

[0043] 50 parts of modified Fe 3 o 4 Particles, 80 parts of phenyl silicone resin, 300 part...

Embodiment 3

[0046] (1) Modified Fe 3 o 4 Particle preparation

[0047] In parts by mass, 30 parts of nano-Fe 3 o 4 , 30 parts of sodium hydroxide and 250 parts of water are added to the reaction kettle with a stirring paddle, stirred at a speed of 500 rpm for 25 minutes, the temperature of the water bath is slowly raised to 75 °C, and 25 parts of ethyl orthosilicate After slowly adding within 3 hours, slowly add 20 parts of octadecyltrimethoxysilane within 4 hours, keep stirring for 6 hours after the dropwise addition is completed, then separate the prepared solution under an external magnetic field, and separate the upper layer After removing the particles in the lower layer, they were alternately washed 5 times with absolute ethanol and distilled water, and then dried at 50°C for 24 hours to obtain the modified Fe 3 o 4 particle.

[0048] (2) Preparation of superhydrophobic and superoleophilic sponge materials

[0049] 40 parts of modified Fe 3 o 4 Particles, 60 parts of methyl...

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Abstract

The invention relates to the field of functional materials, and in order to solve the problem that a common sponge material possesses hydrophilicity and greatly limits separation of an oil-water mixture, the invention provides a preparation method for a super-hydrophobic super-oleophylic sponge material. According to the preparation method, a modified Fe3O4 particle is firstly prepared, and then the super-hydrophobic super-oleophylic sponge material is prepared. The bonding fastness between a coating material and a substrate material is improved, and the super-hydrophobic super-oleophylic sponge material with applied magnetic-field response function characteristic is prepared and used for efficient separation of a mixture of oil or an organic solvent and water, and application of super-hydrophobic super-oleophylic materials in industrialized production is promoted.

Description

technical field [0001] The invention relates to the field of functional materials, in particular to a method for preparing a superhydrophobic and superoleophilic sponge material, which is applied to the separation and recovery of oil or organic solvents and water. Background technique [0002] Superhydrophobic materials refer to materials with a contact angle with water greater than 150°. Due to their unique properties, superhydrophobic materials have important application prospects in the fields of self-cleaning, oil-water separation, antifouling, and equipment protection. Super-hydrophobic materials have long existed in nature, and the most typical representative is the lotus leaf. Studies have shown that the superhydrophobic effect on the surface of lotus leaves comes from the rough microstructure of the surface and the hydrophobic waxy substance. There are two main methods to prepare superhydrophobic materials: one is to construct rough structures on the surface of low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
Inventor 裴勇兵吴连斌韩庆雨汤龙程赵丽陈利民蒋剑雄邱化玉
Owner HANGZHOU NORMAL UNIVERSITY
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