Super-hydrophobic cotton yarn material for oil-water separation as well as preparation method and application thereof

A technology of oil-water separation and super-hydrophobicity, which is applied in the chemical industry, can solve the problem of low oil-water separation performance, and achieve the effects of improving practical applicability, good anti-fouling performance, and good adhesion

Inactive Publication Date: 2020-11-03
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a superhydrophobic cotton yarn material for oil-water separation and its preparation method and application, aiming to solve the problem of poor oil-water separation performance in the oil-water separation materials prepared in the prior art The problem

Method used

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  • Super-hydrophobic cotton yarn material for oil-water separation as well as preparation method and application thereof
  • Super-hydrophobic cotton yarn material for oil-water separation as well as preparation method and application thereof
  • Super-hydrophobic cotton yarn material for oil-water separation as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] see figure 2 , to prepare superhydrophobic cotton yarn material (modified cotton yarn material) for oil-water separation

[0063] (1) Rinse the raw cotton yarn fabric with a size of 60mm*60mm successively with an appropriate amount of ethanol and ultrapure water, and let it dry naturally;

[0064] (2) Put the dried cotton fabric into 50ml 5wt% NaOH solution, stir at room temperature for 10min, and obtain the etched cotton fabric (CY);

[0065] (3) The configuration concentration is the tannic acid solution (TA) of 50mmol / L and the FeSO of 45mmol / L 4 ·7H 2 O solution;

[0066] Immerse the etched cotton fabric into 50ml of tannic acid solution, react at 60°C for 15min, and then add FeSO 4 ·7H 2 O solution, reacted at 60°C for 15min, took it out, washed it with ultrapure water, and dried it in a vacuum oven at 120°C for 1h to obtain a superhydrophobic cotton yarn material for oil-water separation (TA / Fe@CY, where TA / Fe is Coral reef-like rough structure formed by th...

Embodiment 2

[0070] The hydrophobicity, oil-water separation performance, self-cleaning and reusability of the superhydrophobic cotton yarn material used for oil-water separation prepared in Example 1 were tested.

[0071] (1) Superhydrophobic performance test under different pH conditions

[0072] (1.1) Prepare a solution with a pH range from 1 to 10 with ultrapure water, sodium hydroxide, and hydrochloric acid, drop it on the surface of the superhydrophobic cotton material, and test the contact angle. Such as Figure 4 It was shown that within a certain pH range, the superhydrophobic cotton yarn material used for oil-water separation has superhydrophobicity, and the contact angle is generally higher than 150°.

[0073] (2) Self-cleaning test

[0074] (2.1) Under the same test conditions, the cleanability test of the methylene blue dye on the surface of the original cotton material and the superhydrophobic cotton yarn material used for oil-water separation was washed with ultrapure wate...

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Abstract

The invention discloses a super-hydrophobic cotton yarn material for oil-water separation as well as a preparation method and application of the super-hydrophobic cotton yarn material. The preparationmethod of the super-hydrophobic cotton yarn material for oil-water separation comprises the following steps: providing a cotton yarn material; etching the cotton yarn material by using an alkaline solution to obtain an etched cotton yarn material; immersing the etched cotton yarn material into a tannic acid solution, then adding a ferrous sulfate solution for modification, circularly immersing the cotton yarn material into the mixed solution for multiple times, and drying the modified product to prepare the super-hydrophobic cotton yarn material for oil-water separation. The super-hydrophobiccotton yarn material for oil-water separation has good oil-water separation performance.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a superhydrophobic cotton yarn material used for oil-water separation and its preparation method and application. Background technique [0002] With the development of society, the problem of pollution has gradually attracted people's attention. Among them, the pollution of oil pollution to natural water bodies is particularly prominent. Various industrial processes such as food processing, transportation, metallurgy and oil refining produce a large amount of oily wastewater every day. Furthermore, the transportation of oil from production sources to regions of consumption involves the danger of accidental oil spills. Traditional oil-water separation methods include gravity separation, centrifugal separation, electrocoagulation, etc., which have disadvantages such as low separation efficiency, high cost, and high energy consumption. Therefore, it is imminent to study and prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022D06M13/238D06M11/56D06M11/38D06M101/06
CPCB01D17/0202D06M11/38D06M11/56D06M13/238D06M2101/06D06M2200/12
Inventor 刘长坤闻浩
Owner SHENZHEN UNIV
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