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Polyurethane sponge loaded with hybridized graphene coating and preparation method of polyurethane sponge

A technology of polyurethane sponge and graphite coating, applied in chemical instruments and methods, inorganic chemistry, alkali metal compounds, etc., can solve problems such as hydrophilicity

Active Publication Date: 2015-01-21
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane sponge is being widely used in the development of oil-absorbing materials as a high-efficiency adsorption material, but its hydrophilicity has become a difficult problem in the preparation process

Method used

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  • Polyurethane sponge loaded with hybridized graphene coating and preparation method of polyurethane sponge
  • Polyurethane sponge loaded with hybridized graphene coating and preparation method of polyurethane sponge
  • Polyurethane sponge loaded with hybridized graphene coating and preparation method of polyurethane sponge

Examples

Experimental program
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Effect test

preparation example Construction

[0029] For the preparation method of the micron zinc oxide used in the present invention, please refer to: Segovia M., Lemus K., Moreno M., Ana M.A.S., Gonzalez G., Ballesteros B., Sotomayor C., Benavente E. Zinc oxide / carboxylic acid lamellar structures . Mater. Res. Bull. 2011, 46(11): 2191-2195.

[0030] The preparation method of graphite oxide adopted in the present invention please refer to: 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.

Embodiment 1

[0031] Example 1: (please add the specific preparation process of polyurethane sponge loaded with hybrid graphite coating)

[0032] 1) Preparation of graphene oxide (GO). The main method is to add 2g of graphite to a 500ml beaker, then add 50ml of concentrated H 2 SO 4 added to it and cooled to 0 in an ice bath o C; followed by 6g KMnO 4 Add slowly, allow it to warm to room temperature, and place the suspension at 35 oC Continue to stir for 2h under ice water; add 350ml deionized water to dilute after cooling under ice water; add 30% H 2 o 2 to reduce the manganese ions until the gas volatilization is complete; finally the resulting suspension is filtered, washed once with 1mol / L HCl, washed twice with deionized water, and then at 60 oC Dry for 24 h to obtain brown GO powder.

[0033] 2) Low-temperature synthesis of micron ZnO. at 60 oC 2.97g Zn(CH 3 COO) 2 ·H 2 O was added to 125ml of methanol, also at 60 oC Dissolve 1.5g KOH in 65ml methanol, and add it to Z...

Embodiment 2

[0035] Example 2: Determination of Hydrophobic and Lipophilic Effects of Hybrid Graphene Loaded Polyurethane Sponge

[0036] 1) Measurement of contact angle - the measurement of contact angle of materials can be used to show the affinity and repellency of materials to water and oil. Cut the material into a flat section, put it on a glass slide, then place the slide on the contact angle measuring instrument, adjust the position of the sample and the focal length of the microscope lens to make the surface of the material clearly visible, and control the injection needle to drop a drop of water / oil , and then through the shape image of the droplet obtained by the microscope lens and the camera, the contact angle value is calculated by using the built-in software of the instrument for fitting. The affinity of the material to water and oil can be judged by the value of the contact angle: when the contact angle of the material to water reaches 150°, it means that the material is...

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Abstract

The invention discloses a polyurethane sponge loaded with a hybridized graphene coating and a preparation method of the polyurethane sponge. The sponge is formed by loading the micrometer zinc oxide hybridized graphene coating on a polyurethane sponge, and the thickness of the coating is 0.3-0.8mm; the mass ratio of zinc oxide to graphene is 5 percent. According to the test of the hydrophobic effect and the oil absorption ability of the loaded sponge, an experiment shows that the hydrophilia of the sponge turns into high hydrophobicity (a contact angle is 147.9 degrees), the oil adsorption ability of the sponge is obviously increased, and the saturated adsorption quantity of the sponge on diesel reaches 28.01g. Graphene which is modified with hybridized micrometer zinc oxide and graphene oxide is loaded on the sponge, so that the hydrophobic and lipophilic property of the polyurethane sponge is improved; therefore, the effective preparation method for oil polluted water body remediation is provided.

Description

technical field [0001] The invention relates to a polyurethane sponge loaded with a hybrid graphene coating and a preparation method thereof. Background technique [0002] In the process of large-scale exploitation, smelting, transportation, use and treatment of oil, accidents such as pollution, omission, blowout, and oil pipeline leakage occur frequently. Oil entering water bodies causes river and ocean pollution, and its surface evaporation can cause air pollution. At the same time Condensed oil on the surface of the water body may also burn and cause safety problems. The more serious potential harm is that oil not only pollutes the surface water body, causing harm to marine aquatic animals and plants, but also sinks to the seabed, and the harm is inestimable. So the harmful consequences of oil pollution often last for many years, causing some chronic problems for marine aquatic plants and animals, including changes in feeding, reproductive patterns, abnormal behavior and...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30B01J20/28C01G9/02
CPCB01J20/3212
Inventor 刘晓艳李辈辈张新颖柴文波侯芸芸顾玲峰马怡宁
Owner SHANGHAI UNIV
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