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Modified graphene-loaded polyurethane sponge and preparation method thereof

A polyurethane sponge, graphene technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as unresearched

Inactive Publication Date: 2015-02-11
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The types of absorbents today include polymeric absorbents, natural material absorbents, and fiber material absorbents. Among them, graphene has been used as a coating material due to its unique two-dimensional structure and special hydrophobic and lipophilic properties. It has become a hot spot in the research of oil-absorbing materials, but the method of using γ-methacryloxypropyltrimethoxysilane (KH-570) to modify graphene on polyurethane sponge has not been studied

Method used

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  • Modified graphene-loaded polyurethane sponge and preparation method thereof
  • Modified graphene-loaded polyurethane sponge and preparation method thereof
  • Modified graphene-loaded polyurethane sponge and preparation method thereof

Examples

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preparation example Construction

[0021] For the preparation method of graphite oxide, please refer to the literature: Singh, E., Chen, Z., Houshmand, F., Ren, W., Peles, Y., Cheng, H. M. and Koratkar, N., Superhydrophobic graphene foams, Small, 2013 , 9(1): 75-80.

[0022] (2) Test sponge

[0023] Polyurethane sponge (density 0.025g / cm 3 ), purchased from local manufacturers.

[0024] (3) Experimental instruments and equipment

[0025] Heat-collecting magnetic stirrer, FA1004B—analytical balance, vacuum drying oven, oven, ultrasonic cleaning machine, high-speed centrifuge, water bath, vacuum filter pump, magnetic stirring oil bath

[0026] 2. Treatment of sponges and determination of their hydrophobic and lipophilic properties

[0027] (1) Disposal of sponge

[0028] The sponges were ultrasonically cleaned with deionized water and ethanol until use.

[0029] (2) Test oil

[0030] Zero Diesel (Sinopec Minghe Gas Station).

Embodiment 1

[0032] 1) Preparation of graphene oxide (GO). The main method is to add 2g of natural flake graphite to a 500mL beaker in an ice-water bath, and then add 46mL of concentrated H 2 SO 4 (98%), add 1g NaNO 3 , control the temperature below 20°C, add 6g KMnO while stirring 4 , raise the temperature to 35~36°C, keep the solution at this temperature for 1.5h, at this time, gas will be released; slowly add 92mL deionized water into the mixture, then raise the temperature of the water bath to 98°C, and keep it there for 15min , to increase the degree of oxidation of GO; dilute the mixture with 280mL deionized water, and dilute 6mL 30% H 2 o 2 Slowly add the solution to the above solution. If no bright yellow is formed, continue to add dropwise until bright yellow is formed. The mixture is filtered or centrifuged, and washed with 5% HCl solution for several times until it is washed with BaCl 2 SO not detected 4 2- , and then washed with deionized water several times to remove th...

Embodiment 2

[0036] 1) Preparation of graphene oxide (GO). The main method is to add 2g of natural flake graphite to a 500mL beaker in an ice-water bath, and then add 46mL of concentrated H 2 SO 4 (98%), add 1g NaNO 3 , control the temperature below 20°C, add 6g KMnO while stirring 4 , raise the temperature to 35~36°C, keep the solution at this temperature for 1.5h, at this time, gas will be released; slowly add 92mL deionized water into the mixture, then raise the temperature of the water bath to 98°C, and keep it there for 15min , to increase the degree of oxidation of GO; dilute the mixture with 280mL deionized water, and dilute 6mL 30% H 2 o 2 Slowly add the solution to the above solution, if no bright yellow is formed, continue to add dropwise until bright yellow is formed, the mixture is filtered or centrifuged, washed with 5% HCl solution for several times until it is washed with BaCl 2 SO not detected 4 2- , and then washed with deionized water several times to remove the ac...

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Abstract

The invention relates to modified graphene-loaded polyurethane sponge which is characterized in that a modified graphene coating is loaded on the surface of the polyurethane sponge, and is 0.5mm-1.0mm thick, a silane coupling agent is coated on the surface of the modified graphene, wherein the mass ratio of the silane coupling agent to the graphene is 1 to 100. Experiments prove that by measuring the dewatering effect and the oil absorption capability of the loaded sponge, the sponge is super-hydrophobic from hydrophilic (a contact angle is 161 degrees), the oil absorption capability is remarkably enhanced, and the saturation adsorption amount for diesel reaches 37.89g. According to the modified graphene-loaded polyurethane sponge, the modified graphene is loaded on the sponge by using the silane coupling agent, so that the sponge has super-hydrophobic and super-oleophylic performances, and has a potential application value in a process of remediating a petroleum pollution water body.

Description

technical field [0001] The invention relates to a modified graphene-loaded polyurethane sponge and a preparation method thereof. Background technique [0002] With the rapid development of modern industry, the increasing scarcity of land resources and the rapid growth of human demand for energy, shallow sea oil and gas resources have been continuously developed. However, with the development of submarine oil and crude oil, their products are also continuously transported at sea, which inevitably produces many marine oil pollution incidents, such as blowout accidents during development and leakage accidents from transport tankers. Oil spills on the ocean not only brought us huge economic losses, but more importantly, caused significant pollution to the marine ecological environment and surrounding coasts. First of all, oil will seriously endanger the survival of aquatic organisms. After marine mammals ingest oil spills, their visceral functions will be damaged. Certain oil c...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30
CPCB01J20/26B01J20/3085B01J2220/4812
Inventor 刘晓艳李辈辈张新颖柴文波陈婷茹殷甜甜刘宇森
Owner SHANGHAI UNIV
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