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A self-cleaning polybenzoxazine superhydrophobic superoleophilic omentum material and its preparation and application in oil-water separation

A technology of polybenzoxazine and benzoxazine, which is applied in self-cleaning polybenzoxazine superhydrophobic and superoleophilic omentum material and its preparation, and the application field of oil-water separation, which can solve the problem of long time consumption and separation efficiency reduce the problem of reducing the service life of materials, etc., to achieve the effect of shortening the process time, simplifying the technical process and improving the service life

Active Publication Date: 2019-07-23
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these five technologies all have the effect of oil-water separation, in the process of oily sewage treatment, the omentum or container suffers from a certain degree of oil pollution, which reduces the membrane flux, the separation efficiency, and the quality of oil and water. Material life shortened
Moreover, the Chinese patent whose publication number is CN104193999A uses a platinum catalyst in the preparation process of the fluorine-containing silicon polybenzoxazine copolymer, and the molecule contains fluorine atoms, which increases the production cost
[0004] In addition, the Chinese patent with the publication number CN1387932A (invention name "Nano interface separation net with self-cleaning function and its preparation method and application", application number CN01118387.X) discloses that titanium dioxide with photocatalytic self-cleaning properties is doped (TiO 2 ) single-layer network, although the oil-water separation network prepared by this technology has photo-induced self-cleaning effect, but its manufacturing process is complicated, the composition of raw materials is complicated, and the amount of fluorine-containing compounds used is large
In addition, the Chinese patent with the publication number CN102764536A (the title of the invention is "An oily sewage purification net and its preparation method and application", and the application number is CN201210241886.X) discloses a photoinduced self-cleaning oil-water separation net, but its manufacturing process It takes a long time, such as soaking for more than 48 hours in hydrophobization treatment
The manufacturing process is cumbersome, and two layers of filter screens need to be prepared, one layer is deposited with TiO 2 The photo-induced self-cleaning filter, the other layer is a hydrophobic filter

Method used

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  • A self-cleaning polybenzoxazine superhydrophobic superoleophilic omentum material and its preparation and application in oil-water separation
  • A self-cleaning polybenzoxazine superhydrophobic superoleophilic omentum material and its preparation and application in oil-water separation
  • A self-cleaning polybenzoxazine superhydrophobic superoleophilic omentum material and its preparation and application in oil-water separation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Ultrasonic cleaning of 4×5cm polyester fiber non-woven fabric (Shanghai Tianlue Textile New Material Co., Ltd.) with water, ethanol, and acetone for 15 minutes, and dried at room temperature for later use;

[0050] (2) Add 1g of benzoxazine monomer (3-(3-trimethoxysilane) n-propyl-6-methyl-3,4-dihydro-2H-1,3-benzoxazine, MP -aptms, such as formula I-1) is dissolved in 25g chloroform; 1g TiO 2 Nanoparticles (particle size 25-70nm) were added to the above solution, ultrasonically mixed and dispersed for 2 hours to obtain a benzoxazine / nanoparticle blend;

[0051]

[0052] (3) At room temperature, after immersing the clean polyester fiber fabric in the benzoxazine / nanoparticle blend for 30s, pull it out at a pulling speed of 60mm / min, and clamp it vertically with a long tail clip, Immediately after drying, put it into a 160°C curing box for curing for 2 hours.

[0053] The scanning electron microscope pictures of its surface morphology are as follows: figure 1 As...

Embodiment 2

[0056] (1) Clean a 200-mesh, 4×5cm stainless steel metal filter screen (Shanghai Baolan Experimental Instrument Manufacturing Co., Ltd.) with water, ethanol, and acetone for 15 minutes, and dry it at room temperature for later use;

[0057] (2) 1g of benzoxazine monomer (6-methyl-3-phenyl-3,4-dihydro-2H-1,3-benzoxazine, MP-a, such as formula I-2) Dissolve in 10g tetrahydrofuran; 0.5g TiO 2 Nanoparticles (particle size 25-70nm) were added to the above solution, ultrasonically mixed and dispersed for 2 hours to obtain a benzoxazine / nanoparticle blend;

[0058]

[0059] (3) At room temperature, after immersing a clean stainless steel filter in the benzoxazine / nanoparticle blend for 30s, pull it out at a pulling speed of 100mm / min, and clamp it vertically with a long tail clip, Immediately after drying, put it into a 210°C curing box for curing for 1 hour.

[0060] Its operating steps and implementation method are all the same as in Example 1, only the mixture of oil and wate...

Embodiment 3

[0062] (1) Ultrasonic cleaning of 4×5cm nylon fiber filter cloth (Shanghai Tianlue Textile New Material Co., Ltd.) with water, ethanol, and acetone for 15 minutes, and then dried at room temperature for later use;

[0063] (2) 1g of benzoxazine monomer (3-hydroxyethyl-6-methyl-3,4-dihydro-2H-1,3-benzoxazine, MP-eta, such as formula I-3 ) was dissolved in 15g ethanol; 0.7g TiO 2 Add nanoparticles (50-60nm in diameter) to the above solution, and ultrasonically mix and disperse for 2 hours to obtain a benzoxazine / nanoparticle blend;

[0064]

[0065] (3) At room temperature, after immersing the clean nylon fiber filter cloth in the benzoxazine / nanoparticle blend for 60s, pull it out at a pulling speed of 120mm / min, and clamp it vertically with a long tail clip After drying, put it into a 150°C curing box to cure for 1 hour.

[0066] Its operating steps and implementation method are all the same as in Example 1, only the mixture of oil and water is changed to the mixture of t...

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Abstract

The invention relates to a self-cleaning polybenzoxazine super-hydrophobic super-oleophylic net film material, preparation and application thereof in oil-water separation. The super-hydrophobic super-oleophylic net film material comprises: 1 part by weight of benzoxazine, 0.001-60 parts by weight of nanoparticles, and 1-100 parts by weight of a solvent. The preparation process consists of: adding nanoparticles into a benzoxazine solution, and mixing and dispersing the substances uniformly; putting a polymer fiber filter cloth or a metal filter screen into the blend, and preparing the self-cleaning polybenzoxazine super-hydrophobic super-oleophylic net film material by dip coating process and further thermocuring process. The invention provides the super-hydrophobic super-oleophylic net film material and preparation thereof, the net film material has the characteristics of cheap raw materials, no fluorine-containing additive, simple process, suitability for continuous industrial production, and excellent oil-water separation. The oil-water separation material is acid and alkali resistant, ultraviolet radiation resistant, and high temperature resistant, can be recycled repeatedly, and has good self-cleaning characteristic under the combined action of illumination and heating treatment.

Description

technical field [0001] The invention belongs to the technical fields of chemical engineering and material surface modification, and in particular relates to a self-cleaning polybenzoxazine superhydrophobic and superoleophilic omentum material, a preparation method thereof, and an application in oil-water separation. Background technique [0002] Oil-water separation is of great significance in daily life and industrial production. Membrane separation technology is an effective method for treating oily sewage. However, membrane fouling is the primary problem that needs to be solved today, which will reduce the flux of the oil-water separation membrane, reduce the separation efficiency, and reduce the final oil or water quality. Therefore, it is necessary to prepare an oil-water separation membrane material with self-cleaning properties to improve or solve the pollution problem of the oil-water separation material, so as to effectively separate oil from water. [0003] The pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022
Inventor 辛忠张雯斐陆馨周长路
Owner EAST CHINA UNIV OF SCI & TECH
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