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
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[0012] The further feature of the preparation method of the present invention is that when the content of N,N-dimethylacetamide in the step (1) is 0, the preparation method further includes the following two steps (3) and (4):
[0013] (3) Prepare methyl silicone oil solution; add 100 to 1500 mL of xylene and 25 to 1600 μL of dispersant methyl silicone oil in the container, stir evenly, and prepare a methyl silicone oil solution;
[0014] (4) Dip coating methyl silicone oil film; immerse the hollow tubular porous polymer material that has been immersed and coated with the graphene dispersion into the xylene solution containing methyl silicone oil, leave it to stand for 5-10 minutes, and place it after removal. 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. Then a hollow tubular composite oil-absorbing material with graphene as the surface adsorption layer and hollow tubular porous polymer material a...
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[0025] Example 1
[0026] (1) Configure the graphene dispersion; add 500mL of dispersant ethanol and 0.08g of graphene to the container, ultrasonically disperse for 20 minutes, and configure the graphene dispersion;
[0027] (2) Dip coated graphene adsorption layer; 0.4g hollow tubular polyurethane sponge (hollow tubular polyurethane sponge specifications: inner diameter of 5mm, tube wall thickness of 10mm, length of 50mm, average pore size of 0.1mm, porosity 70% ) Immerse in the graphene dispersion, let it stand for 5 minutes, then put the hollow tubular polyurethane sponge into a vacuum oven with negative pressure of -0.1MPa, and treat it at 150℃ for 6 hours until it is completely dry. Take it out and weigh it immediately to obtain a hollow tube. 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 co...
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[0029] Example 2
[0030] (1) Configure the graphene dispersion; add 500mL of dispersant ethanol and 0.08g of graphene, 19.7g of DMAc, ultrasonic dispersion treatment for 40min in the container, and configure the graphene dispersion.
[0031] (2) Dip coated 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 size 0.15mm, porosity 70% ) Immerse in the graphene dispersion, let it stand for 30 minutes, then take it out and put it in a vacuum oven with a negative pressure of -0.1MPa. To speed up the volatilization of 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 to obtain the hollow tubular composite oil-absorbing material. The mass of the obtained graphene adsorption layer accounts for 9% of the mass of the hollow tubular polyurethane sponge.
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