Multi-dimensional nano-particle modified super-hydrophobic oil-absorbing foam material and preparation method thereof

A technology of nano-particles and foam materials, applied in the field of super-hydrophobic oil-absorbing foam materials, can solve the problems of single modified particle size, lack of chemical connection between particles and foam matrix, etc., and achieves low cost, simple preparation process, and improved adhesion. Effect

Active Publication Date: 2017-08-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the oil-absorbing foam material in the prior art, such as the single size of the modified particle and the lack of chemical connection between the particle and the foam matrix, the present invention provides a super-hydrophobic oil-absorbing foam material modified by multi-dimensional nanoparticles

Method used

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  • Multi-dimensional nano-particle modified super-hydrophobic oil-absorbing foam material and preparation method thereof
  • Multi-dimensional nano-particle modified super-hydrophobic oil-absorbing foam material and preparation method thereof
  • Multi-dimensional nano-particle modified super-hydrophobic oil-absorbing foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Weigh 100 mg of silicon dioxide, 10 mg of nanocellulose, and 10 mg of nanoclay, respectively, and put them into a dry flask, add anhydrous dimethylformamide, seal the flask and sonicate for 1 hour to fully disperse the nanoparticles, and prepare A mass concentration of 5% silicon dioxide / nanocellulose / nanoclay nanoparticle mixed solution;

[0045] (2) Wash and dry the polyurethane foam in a 70vol% ethanol solution to clean the surface; immerse the dried foam material in a toluene solution containing 10wt% toluene diisocyanate, seal and react with stirring at 70°C for 1 hour, A modified foam material is obtained;

[0046] (3) Take out the modified foam material and quickly immerse it in the silica / nanocellulose / nanoclay nanoparticle mixture solution prepared in step (1), seal it and stir it at 70°C for 3 hours to obtain a surface-adhesive solution. Foam materials of branched nanoparticles;

[0047] (4) Wash and dry the foam material grafted with nanoparticles on the ...

Embodiment 2

[0052] (1) Weigh 10 mg of silicon dioxide titanium, 100 mg of carbon nanotubes and 100 mg of graphene oxide respectively, put them into a dry flask, add anhydrous dimethyl sulfoxide, and seal the flask with ultrasound for 2 hours to fully disperse the nanoparticles. Prepare a mixed solution of titanium dioxide / carbon nanotubes / graphene oxide nanoparticles with a mass concentration of 1%;

[0053] (2) Wash and dry the polyurethane foam in a 70vol% ethanol solution to clean the surface; immerse the dried foam material in a toluene solution containing 10wt% toluene diisocyanate, seal and react with stirring at 90°C for 3 hours, A modified foam material is obtained;

[0054] (3) Take out the modified foam material and quickly immerse it in the titanium dioxide / carbon nanotube / graphene oxide nanoparticle mixture solution prepared in step (1), seal it and stir it at 90°C for 1 hour to obtain surface grafting nanoparticle foam material;

[0055] (4) Repeat step (2) and step (3) twi...

Embodiment 3

[0060] (1) Weigh 100 mg of silica titanium, 50 mg of halloysite and 50 mg of graphene oxide respectively, put them into a dry flask, add anhydrous dimethyl sulfoxide, and seal the flask with ultrasound for 1.5 hours to fully disperse the nanoparticles and prepare the quality Concentration is 3% titanium dioxide / halloysite / graphene oxide nanoparticle mixture;

[0061] (2) Wash and dry the polyurethane foam in a 70vol% ethanol solution to clean the surface; immerse the dried foam material in a toluene solution containing 10wt% isophorone diisocyanate, seal and stir at 80°C for reaction 2 hours, obtain the modified foam material;

[0062] (3) Take out the modified foam material and quickly immerse it in the titanium dioxide / halloysite / graphene oxide nanoparticle mixture solution prepared in step (1), seal it and stir it at 80°C for 2 hours to obtain surface grafting nanoparticle foam material;

[0063] (4) Repeat steps (2) and (3) to graft two layers of composite nanoparticles ...

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Abstract

The invention discloses a multi-dimensional nano-particle modified super-hydrophobic oil-absorbing foam material and a preparation method thereof. According to the method, nano particles of different dimensions are grafted on the surface of a three-dimensional foam material by covalent bonds through a dual-functional group chemical modification method, and further, hydrophobic modification is performed by using a simple silane coupling agent, so that the super-hydrophobic oil-absorbing foam material is acquired. In the method, particle adhesion is improved effectively through chemical grafting, multi-layer modification by nano particles is realized by grafting repeatedly, so as to regulate the surface roughness of the material. The super-hydrophobic oil-absorbing foam material overcomes defects of single size of particles and poor adhesion on a matrix, is prepared through a simple process, is low-cost, and can be produced in a large scale.

Description

technical field [0001] The invention relates to the technical field of surface-functionalized nanocomposite materials, in particular to a superhydrophobic oil-absorbing foam material modified by multi-dimensional nanoparticles. Background technique [0002] In recent years, offshore oil spills and organic solvent pollution have caused serious damage to water resources. The development of efficient, practical, low-cost and recyclable superhydrophobic oil-absorbing foam materials has received more and more attention. The principle used by superhydrophobic oil-absorbing materials is that the surface tension of oil is lower than that of water. When the surface roughness of the material is high enough and the surface energy is low enough, the water can remain in a non-wetting state on the surface of the material and the oil can be in a wetting state, thereby The oil is drawn into the interior of the foam by capillary action. Therefore, increasing the surface roughness of the mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C08J9/42C08J9/00C08L75/04C08L61/28
CPCC08J9/00C08J9/40C08J9/42C08J2361/28C08J2375/04
Inventor 米皓阳经鑫况太荣刘通
Owner SOUTH CHINA UNIV OF TECH
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