Hydrophobic and oil-absorption modified sponge composite material and preparation method thereof

Abstract

The invention provides a hydrophobic and oil-absorption modified sponge composite material and a preparation method thereof. The preparation method comprises the following steps of impregnating a sponge by an aqueous solution of graphene oxide added with polyvinyl alcohol hollow microspheres and a mixed solution of, tetraethoxysilane and sodium polyacrylate for the first time; enabling the tetraethoxysilane and sodium polyacrylate to react with water to form a gel matter; after condensing, forming a graphene oxide film matter with random and undetermined shapes inside and outside the sponge; reducing and heating, removing the polyvinyl alcohol hollow microspheres, and forming a plurality of pores in the film matter, so as to obtain the hydrophobic and oil-absorption modified sponge composite material; treating by an impregnating solution, so as to further improve the hydrophobic and oil-absorption properties of the product.

Description

technical field

[0001] The invention relates to the technical field of composite materials, in particular to a hydrophobic and oil-absorbing modified sponge composite material and a preparation method thereof. Background technique

[0002] With the development of marine transportation of crude oil, the pollution of ocean and other water resources caused by oil spills has become one of the main environmental problems that people face. Petroleum will also bring a lot of organic solvents, which not only have safety hazards such as fire and explosion, but also cause irreversible and serious harm to the environment and human health, which urgently need to be effectively contained and resolved.

[0003] Using oil-absorbing materials to absorb and recover is a simple and quick sewage treatment method. Traditional oil-absorbing materials include inorganic materials, natural organic materials, and organic synthetic materials. However, the existing oil-absorbing materials generally ha...

Examples

Embodiment 1

[0030] A method for preparing a hydrophobic and oil-absorbing modified sponge composite material, the specific steps are as follows:

[0031] (1) Add polyvinyl alcohol hollow microspheres to the graphene oxide aqueous solution, stir evenly, add tetraethyl orthosilicate and sodium polyacrylate, ultrasonically oscillate, add sponge to make it soak, let it stand for 20 minutes, take it out Solidification causes multiple membranes to form inside and outside the sponge;

[0032] (2) Reduction, washing, and then heating to 1300°C to remove the polyvinyl alcohol hollow microspheres, forming holes in the membrane to obtain a graphene composite sponge;

[0033] (3) Mix and stir tetrapropoxysilane, vinyltriethoxysilane and monophenylenedioctyl phosphite to make an impregnation solution, add the graphene composite sponge into the impregnation solution, immerse at 120°C for 20 minutes, take out Drain to obtain a hydrophobic and oil-absorbing modified sponge composite material.

[0034] ...

Embodiment 2

[0043] A method for preparing a hydrophobic and oil-absorbing modified sponge composite material, the specific steps are as follows:

[0044] (1) Add polyvinyl alcohol hollow microspheres to the graphene oxide aqueous solution, stir evenly, add tetraethyl orthosilicate and sodium polyacrylate, ultrasonically oscillate, add sponge to make it soak, let it stand for 30 minutes, take it out Solidification causes multiple membranes to form inside and outside the sponge;

[0045] (2) Reduction, washing, and then heating to 1400°C to remove the polyvinyl alcohol hollow microspheres, forming holes in the membrane to obtain a graphene composite sponge;

[0046] (3) Mix and stir tetrapropoxysilane, vinyltriethoxysilane and monophenylenedioctyl phosphite to make an impregnation liquid, add the graphene composite sponge into the impregnation liquid, immerse at 140°C for 30 minutes, take out Drain to obtain a hydrophobic and oil-absorbing modified sponge composite material.

[0047] Wher...

Embodiment 3

[0056] A method for preparing a hydrophobic and oil-absorbing modified sponge composite material, the specific steps are as follows:

[0057] (1) Add polyvinyl alcohol hollow microspheres to the graphene oxide aqueous solution, stir evenly, add tetraethyl orthosilicate and sodium polyacrylate, ultrasonically oscillate, add sponge to make it soak, let it stand for 20 minutes, take it out Solidification causes multiple membranes to form inside and outside the sponge;

[0058] (2) Reduction, washing, and then heating to 1400°C to remove the polyvinyl alcohol hollow microspheres, forming holes in the membrane to obtain a graphene composite sponge;

[0059] (3) Mix and stir tetrapropoxysilane, vinyltriethoxysilane and monophenylenedioctyl phosphite to make an impregnation solution, add the graphene composite sponge into the impregnation solution, immerse at 120°C for 30 minutes, take out Drain to obtain a hydrophobic and oil-absorbing modified sponge composite material.

[0060] ...

technical field

[0001] The invention relates to the technical field of composite materials, in particular to a hydrophobic and oil-absorbing modified sponge composite material and a preparation method thereof. Background technique

[0002] With the development of marine transportation of crude oil, the pollution of ocean and other water resources caused by oil spills has become one of the main environmental problems that people face. Petroleum will also bring a lot of organic solvents, which not only have safety hazards such as fire and explosion, but also cause irreversible and serious harm to the environment and human health, which urgently need to be effectively contained and resolved.

[0003] Using oil-absorbing materials to absorb and recover is a simple and quick sewage treatment method. Traditional oil-absorbing materials include inorganic materials, natural organic materials, and organic synthetic materials. However, the existing oil-absorbing materials generally ha...

Examples

Embodiment 1

[0030] A method for preparing a hydrophobic and oil-absorbing modified sponge composite material, the specific steps are as follows:

[0031] (1) Add polyvinyl alcohol hollow microspheres to the graphene oxide aqueous solution, stir evenly, add tetraethyl orthosilicate and sodium polyacrylate, ultrasonically oscillate, add sponge to make it soak, let it stand for 20 minutes, take it out Solidification causes multiple membranes to form inside and outside the sponge;

[0032] (2) Reduction, washing, and then heating to 1300°C to remove the polyvinyl alcohol hollow microspheres, forming holes in the membrane to obtain a graphene composite sponge;

[0033] (3) Mix and stir tetrapropoxysilane, vinyltriethoxysilane and monophenylenedioctyl phosphite to make an impregnation solution, add the graphene composite sponge into the impregnation solution, immerse at 120°C for 20 minutes, take out Drain to obtain a hydrophobic and oil-absorbing modified sponge composite material.

[0034] ...

Embodiment 2

[0043] A method for preparing a hydrophobic and oil-absorbing modified sponge composite material, the specific steps are as follows:

[0044] (1) Add polyvinyl alcohol hollow microspheres to the graphene oxide aqueous solution, stir evenly, add tetraethyl orthosilicate and sodium polyacrylate, ultrasonically oscillate, add sponge to make it soak, let it stand for 30 minutes, take it out Solidification causes multiple membranes to form inside and outside the sponge;

[0045] (2) Reduction, washing, and then heating to 1400°C to remove the polyvinyl alcohol hollow microspheres, forming holes in the membrane to obtain a graphene composite sponge;

[0046] (3) Mix and stir tetrapropoxysilane, vinyltriethoxysilane and monophenylenedioctyl phosphite to make an impregnation liquid, add the graphene composite sponge into the impregnation liquid, immerse at 140°C for 30 minutes, take out Drain to obtain a hydrophobic and oil-absorbing modified sponge composite material.

[0047] Wher...

Embodiment 3

[0056] A method for preparing a hydrophobic and oil-absorbing modified sponge composite material, the specific steps are as follows:

[0057] (1) Add polyvinyl alcohol hollow microspheres to the graphene oxide aqueous solution, stir evenly, add tetraethyl orthosilicate and sodium polyacrylate, ultrasonically oscillate, add sponge to make it soak, let it stand for 20 minutes, take it out Solidification causes multiple membranes to form inside and outside the sponge;

[0058] (2) Reduction, washing, and then heating to 1400°C to remove the polyvinyl alcohol hollow microspheres, forming holes in the membrane to obtain a graphene composite sponge;

[0059] (3) Mix and stir tetrapropoxysilane, vinyltriethoxysilane and monophenylenedioctyl phosphite to make an impregnation solution, add the graphene composite sponge into the impregnation solution, immerse at 120°C for 30 minutes, take out Drain to obtain a hydrophobic and oil-absorbing modified sponge composite material.

[0060] ...

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