Preparation method of hollow tubular composite oil absorption material

An oil-absorbing material and tubular technology, which is applied in the field of preparation of hollow tubular composite oil-absorbing materials, can solve the problems of inability to realize efficient adsorption and separation of oil-water system, scale application limitations, etc., and achieve convenient on-site use, high oil absorption rate, and simple preparation process Effect

Active Publication Date: 2014-01-22
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

This type of graphene-based porous polymer oil-absorbing material has the characteristics of large adsorption capacity and good oil-water selectivity. However, the prepared oil-absorbing material can only be used for intermittent (static) adsorption of oil-water systems, and cannot achieve continuous (dynamic) oil-water systems. Efficient adsorption and separation, industrial scale application is limited

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  • Preparation method of hollow tubular composite oil absorption material

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preparation example Construction

[0012] A further feature of the preparation method of the present invention is that when the N,N-dimethylacetamide content in the step (1) is 0, the preparation method also includes the following two steps (3) and (4):

[0013] (3) Prepare a methyl silicone oil solution; add 100-1500mL xylene and 25-1600μL methyl silicone oil as a dispersant into the container, stir evenly, and prepare a methyl silicone oil solution;

[0014] (4) Dipping and coating of methyl silicone oil film; immerse the hollow tubular porous polymer material treated by dipping and coating of graphene dispersion into xylene solution containing methyl silicone oil, let it stand for coating for 5-10 minutes, take it out and put it Put it into a vacuum oven with a negative pressure of -0.1MPa, and treat it at 100-150°C for 12-14 hours until it is completely dry, and then a hollow tubular composite oil-absorbing material with graphene as the surface adsorption layer and a hollow tubular porous polymer material as...

Embodiment 1

[0026] (1) Prepare a graphene dispersion; add 500mL dispersant ethanol and 0.08g graphene into the container, ultrasonically disperse for 20 minutes, and prepare a graphene dispersion;

[0027] (2) Dipping and coating graphene adsorption layer; 0.4g hollow tubular polyurethane sponge (hollow tubular polyurethane sponge specifications: inner diameter 5mm, tube wall thickness 10mm, length 50mm, average pore diameter 0.1mm, porosity 70% ) into the graphene dispersion liquid, let it stand for 5 minutes, then put the hollow tubular polyurethane sponge in a vacuum oven with a negative pressure of -0.1MPa, and treat it at 150°C for 6 hours until it is completely dry, take it out and weigh it immediately, and the hollow tubular sponge is obtained. Composite oil-absorbing material. The mass of the obtained graphene adsorption layer accounts for 7% of the mass of the hollow tubular polyurethane sponge.

[0028] The maximum static adsorption capacity of the obtained hollow tubular compo...

Embodiment 2

[0030] (1) Prepare the graphene dispersion; add 500mL of dispersant ethanol and 0.08g of graphene, 19.7g of DMAc, and ultrasonically disperse for 40min in the container to prepare the graphene dispersion.

[0031] (2) Dipping and coating graphene adsorption layer; 0.4g hollow tubular polyurethane sponge (hollow tubular polyurethane sponge specifications: inner diameter 5mm, tube wall thickness 10mm, length 50mm, average pore diameter 0.15mm, porosity 70% ) into the graphene dispersion, let it stand for 30 minutes, then take it out and put it into a vacuum oven with a negative pressure of -0.1MPa. In order to speed up the volatilization of the dispersant ethanol and DMAc, set the oven temperature to 100°C and treat it at 100°C for 12h , until it is completely dry, take it out and weigh it, and the hollow tubular composite oil-absorbing material is obtained. The mass of the obtained graphene adsorption layer accounts for 9% of the mass of the hollow tubular polyurethane sponge. ...

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Abstract

The invention discloses a preparation method of a hollow tubular composite oil absorption material. The preparation method adopts the process of: 1. preparing a graphene dispersion solution by adding 100-1500mL of a dispersant, graphene accounting for 20-30% of the total mass of a hollow tubular porous polymer material, and N, N-dimethylacetamide accounting for greater than 0 and less than or equal to 6% of the total mass of the dispersant, and conducting ultrasonic dispersion treatment for 20-40min, with the dispersant including ethanol, N-methyl pyrrolidone, tetrahydrofuran or dimethylformamide; and 2. dip coating a graphene adsorption layer: dipping the hollow tubular porous polymer material into the graphene dispersion solution, performing standing coating for 5-60min, then putting the material into a vacuum oven with a negative pressure of -0.1MPa, carrying out treatment at 100-150DEG C for 6-12h till complete drying, thus obtaining the hollow tubular composite oil absorption material. And the mass content of the adsorption layer accounts for 5-10% of the mass of the hollow tubular porous polymer material.

Description

technical field [0001] The invention relates to the technology of adsorbing functional materials, in particular to a preparation method of a hollow tubular composite oil-absorbing material. The oil-absorbing material is made of graphene as a surface adsorption layer and a hollow tubular porous polymer material as a matrix layer, and has good continuous and efficient oil absorption and oil-water separation functions. Background technique [0002] At present, the leakage accidents of industrial organic wastewater and offshore oil tankers and oil wells occur frequently, causing water environmental pollution is becoming more and more serious, which has posed a serious threat to aquatic organisms and human health. How to quickly deal with organic pollutants in environmental pollution accidents has become a research hotspot. Among them, rapid oil-water separation and high-efficiency oil-absorbing materials are in urgent need of development. As a new type of functional polymer ma...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/40
Inventor 肖长发胡宵赵健
Owner TIANJIN POLYTECHNIC UNIV
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