Preparation method of oil-water separation filter paper

A technology of oil-water separation and filter paper, which is applied in the direction of separation method, filter paper, filtration separation, etc., can solve the problems of numerous follow-up problems, complex process, harsh conditions, etc., and achieve the effect of short cycle, simple process and low energy consumption

Inactive Publication Date: 2012-11-28
NORTHEAST FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a time-saving, simple and low-cost preparation method of oil-water separation filter paper, to overcome the complex process, high energy consumption, high cost, harsh conditions and follow-up problems of the preparation method of oil-water separation materials in the prior art many other issues

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  • Preparation method of oil-water separation filter paper
  • Preparation method of oil-water separation filter paper
  • Preparation method of oil-water separation filter paper

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Embodiment 1

[0022] The present embodiment provides a kind of preparation method of oil-water separation filter paper, carries out according to the following steps:

[0023] Step 1. Ammonia water with a volume fraction of 10% of absolute ethanol and 10% tetraethyl orthosilicate were successively added to absolute ethanol, magnetically stirred at room temperature for 1 h, left to stand, and aged for 12 h;

[0024] Step 2: Add octadecyltrichlorosilane with a volume fraction of 0.6% ethanol to the aged mixture, stir magnetically for 12 h, wash with alcohol, centrifuge, and vacuum dry at 60°C for 12 h to prepare hydrophobic silica particles;

[0025] Step 3, prepare the THF solution of polystyrene, the consumption of polystyrene is 20% (m / v) of THF;

[0026] Step 4, prepare hydrophobic silicon dioxide / polystyrene / THF mixed solution, evenly disperse hydrophobic silicon dioxide particles in the solution obtained in step 3, wherein the amount of hydrophobic silicon dioxide particles is 20% (m / ...

Embodiment 2

[0030] The present embodiment provides a kind of preparation method of oil-water separation filter paper, carries out according to the following steps:

[0031] Step 1. Add ammonia water with a volume fraction of 7% of absolute ethanol and 10% tetraethyl orthosilicate to absolute ethanol successively, ultrasonicate in a water bath at 37°C for 2 h, let stand, and age for 0.5 h;

[0032] Step 2: Add octadecyltrichlorosilane with a volume fraction of 0.8% ethanol to the aging mixture, stir magnetically for 2 h, wash with alcohol, centrifuge, and vacuum dry at 60°C for 6 h to prepare hydrophobic silica particles;

[0033] Step 3, prepare the THF solution of polystyrene, the consumption of polystyrene is 20% (m / v) of THF;

[0034] Step 4, prepare hydrophobic silicon dioxide / polystyrene / THF mixed solution, evenly disperse hydrophobic silicon dioxide particles in the solution obtained in step 3, wherein the amount of hydrophobic silicon dioxide particles is 20% (m / v);

[0035] St...

Embodiment 3

[0038] The present embodiment provides a kind of preparation method of oil-water separation filter paper, carries out according to the following steps:

[0039] Step 1. Ammonia water with a volume fraction of 15% of absolute ethanol and 10% tetraethyl orthosilicate were successively added to absolute ethanol, magnetically stirred at room temperature for 1 h, left to stand, and aged for 12 h;

[0040] Step 2: Add octadecyltrichlorosilane with a volume fraction of 0.8% ethanol to the aging mixture, stir magnetically for 2 h, wash with alcohol, centrifuge, and vacuum dry at 75°C for 4 h to prepare hydrophobic silica particles ;

[0041] Step 3, prepare the THF solution of polystyrene, the consumption of polystyrene is 40% (m / v) of THF;

[0042] Step 4, prepare hydrophobic silicon dioxide / polystyrene / THF mixed solution, evenly disperse hydrophobic silicon dioxide particles in the solution obtained in step 3, wherein the amount of hydrophobic silicon dioxide particles is 10% (m / ...

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Abstract

The invention provides a preparation method of oil-water separation filter paper, belonging to the technical field of functional materials. The method comprises the following steps of: (1) sequentially adding ethyl orthosilicate and ammonia water into ethanol for reacting, and standing over night for aging; (2) adding octadecyltrichlorosilane into the aged mixed liquor, magnetically stirring, washing with ethanol, centrifuging, and drying to obtain hydrophobic silica particles; (3) preparing a tetrahydrofuran solution of polystyrene; (4) preparing hydrophobic silica/polystyrene/tetrahydrofuran mixed liquor; and (5) A: soaking filter paper into the mixed liquor, taking the filter paper out of the mixed liquor, putting the filter paper in clean watch glass, and drying at room temperature to obtain the oil-water separation filter paper; or (B) horizontally paving filter paper into clean watch glass, sucking a certain amount of mixed liquor, uniformly coating the mixed liquor on the surface of the filter paper, and drying at room temperature to obtain the oil-water separation filter paper. The method provided by the invention has the advantages of simple process, low economic cost, short period, small energy consumption, no need of complicated special equipment and no subsequent problem, thus the method has wide application prospects in the future.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a preparation method of oil-water separation filter paper with a micro-nano hierarchical structure. Background technique [0002] Free water in oil is a key factor affecting the quality of oil. Therefore, developing a simple, economical and practical oil-water separation material is an important topic in the filtration and separation industry. [0003] Chinese Patent Application No. 201110071481.1 discloses an oil-water separation device and a preparation method, which uses metal mesh to pass oil and retain water. Chinese Patent Application No. 200910242075.X discloses a method for preparing an anti-pollution oil-water separation ultrafiltration membrane. Although both have a certain oil-water separation effect, they are not stable enough, such as not resistant to acid, alkali, and salt, and use fluorine-containing compounds, which have high cost, high e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H17/20
Inventor 王成毓张明
Owner NORTHEAST FORESTRY UNIVERSITY
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