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Super-hydrophobic and super-oleophilic oil-water separation mesh membrane and preparation method thereof

An oil-water separation omentum and super-oleophilic technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve problems such as high-temperature curing and complicated manufacturing process, and achieve low cost, simple preparation method, and transparent pores high rate effect

Active Publication Date: 2009-09-02
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the three technical solutions all have the effect of oil-water separation, they also have different deficiencies, such as the use of fluorine-containing compounds, the manufacturing process is complicated, and some require high-temperature curing, etc.

Method used

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  • Super-hydrophobic and super-oleophilic oil-water separation mesh membrane and preparation method thereof
  • Super-hydrophobic and super-oleophilic oil-water separation mesh membrane and preparation method thereof
  • Super-hydrophobic and super-oleophilic oil-water separation mesh membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add 0.1mol allyl glycidyl ether and 0.5g H 2 PtCl 6 isopropanol solution, drop 0.05mol of α, ω-dihydropolysiloxane (α, ω-dihydropolysiloxane n=5 in the structural formula of the present invention) at 90°C, after the dropwise addition The reaction was continued at 100° C. for 10 hours, the catalyst and impurities were removed by decolorization with activated carbon, and α, ω-diglycidylpropyl polysiloxane (n=5) was obtained after filtration with a yield of 92.0%.

[0030] 1 H-NMR (δ, ppm): 0.02-0.09 (m, SiCH 3 ), 0.54 (m, SiCH 2 ), 1.61 (m, SiCH 2 CH 2 ), 2.61 and 2.79 (m, -CHCH 2 O-), 3.14 (m, -CHCH 2 O-), 3.37-3.48 (m, CH 2 OCH 2 CH) 3.68 (d, CH 2 OCH 2 CH).

[0031] (2) Add 5 mmol of the above-mentioned α, ω-diglycidyl propyl polysiloxane, 5 mmol of bisphenol A and 0.06 g of triphenylphosphine into a 50 mL three-necked flask, and react at 110 ° C for 7 hours to obtain polysilicon The oxane-bisphenol A copolymer has a yield of 91.8%.

[0032] 1 H-NMR ...

Embodiment 2

[0036] (1) Add 0.17mol allyl glycidyl ether and 0.9g H 2 PtCl 6 isopropanol solution, drop 0.085mol of α, ω-dihydropolysiloxane (α, ω-dihydropolysiloxane n=13 in the structural formula of the present invention) at 90°C, after the addition is completed The reaction was continued at 120° C. for 12 hours, the catalyst and impurities were decolorized with activated carbon, and α, ω-diglycidylpropylpolysiloxane (n=13) was obtained after filtration with a yield of 90.3%.

[0037] (2) Add 5 mmol of the above-mentioned α, ω-diglycidyl propyl polysiloxane, 5 mmol of bisphenol A and 0.08 g of triphenylphosphine into a 50 mL three-necked flask, and react at 115 ° C for 8 hours to obtain polysilicon Oxyalkylene-bisphenol A copolymer, the yield is 95.3%.

[0038] (3) The above-mentioned polysiloxane-bisphenol A copolymer is dissolved in toluene to form a 10 mg / mL solution, and a mixture of ethyl orthosilicate and butyltin (orthosilicate: butyltin) with 5% of the mass of the copolymer is ...

Embodiment 3

[0041] (1) Add 0.18mol allyl glycidyl ether and 1.4g H 2 PtCl 6 isopropanol solution, drop 0.09mol of α, ω-dihydropolysiloxane (α, ω-dihydropolysiloxane n=21 in the structural formula of the present invention) at 90°C, after the dropwise addition The reaction was continued at 120° C. for 12 hours, the catalyst and impurities were decolorized with activated carbon, and α, ω-diglycidylpropyl polysiloxane (n=21) was obtained after filtration with a yield of 91.5%.

[0042] (2) Add 5 mmol of the above-mentioned α, ω-diglycidyl propyl polysiloxane, 5 mmol of bisphenol A and 0.12 g of triphenylphosphine into a 50 mL three-necked flask, and react at 115 ° C for 8 hours to obtain polysilicon Oxyalkylene-bisphenol A copolymer, the yield is 96.7%.

[0043] (3) The above-mentioned polysiloxane-bisphenol A copolymer was dissolved in n-hexane to form a 5 mg / mL solution, and a mixture of ethyl orthosilicate and butyltin (ethyl orthosilicate: The mass ratio of butyl tin is 2:1), stir evenly...

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Abstract

The invention pertains to the technical fields of chemistry, chemical industry and functional macromolecular materials, in particular relates to a super-hydrophobic and super-oleophilic oil-water separation mesh membrane and a preparation method thereof. The super-hydrophobic and super-oleophilic oil-water separation mesh membrane is prepared with a dip-coating method which comprises the steps that a proper treating agent is selected, epoxy group-terminated oligomeric siloxane is copolymerized with bisphenol A on a proper condition; the oligomeric siloxane-bisphenol A copolymer is mixed evenly with the treating agent to form a solution; the oligomeric siloxane-bisphenol A copolymer is cured on a fabric net of 100 meshes to 400 meshes to obtain the super-hydrophobic and super-oleophilic oil-water separation mesh membrane. The mesh membrane contains no fluorin, and has high hole penetration and good oil / water separation effect. The preparation method of the mesh membrane is simple.

Description

technical field [0001] The invention belongs to the technical fields of chemical engineering and polymer functional materials, and in particular relates to an oil-water separation omentum with superhydrophobic and superlipophilic functions and a preparation method thereof. Background technique [0002] Moisture in oil, especially free water, is a key factor affecting the quality of oil. Therefore, it is an important topic in the filtration and separation industry to seek an economical and practical method that can continuously remove water in oil. [0003] Patent No.: 00110215.X's Chinese invention patent discloses a preparation of an oil-passing and water-retaining net. Oil-water separation membrane with super lipophilic properties. Although the three technical solutions all have oil-water separation effects, they also have different deficiencies, such as the use of fluorine-containing compounds, complicated manufacturing processes, and some need high-temperature curing an...

Claims

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Application Information

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IPC IPC(8): B01D17/022
Inventor 郭丽张志杰谢择民
Owner INST OF CHEM CHINESE ACAD OF SCI
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