Polyvinylidene fluoride lyophobic separation membrane and preparation method thereof

A polyvinylidene fluoride, hydrophobic separation membrane technology, applied in semi-permeable membrane separation, chemical instruments and methods, membranes, etc., can solve the problem of polyvinylidene fluoride hydrophilic microporous membrane not resistant to pollution and other problems

Inactive Publication Date: 2017-04-26
廖正康
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that the polyvinylidene fluoride hydrophilic microporous membrane is not resistant to pollution in the prior art, and provides a polyvinylidene fluoride hydrophobic separation membrane, which is hydrophobic and anti-pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A polyvinylidene fluoride hydrophobic separation membrane, comprising the following raw materials in parts by weight:

[0028] 15 parts polyvinylidene fluoride

[0029] 75 parts of N,N-dimethylformamide

[0030] 3 parts n-butanol

[0031] 3 parts butyl acetate

[0032] 3 parts tributyl phosphate

[0033] Polyethylene glycol PEG-1000 5 parts

[0034] Anhydrous Lithium Chloride 3 parts

[0035] Sodium chloride 3 parts

[0036] 300 parts of deionized water

[0037] Alcohol 5 parts

[0038] 5 parts isopropyl alcohol

[0039] 2 parts of hydrophobic coating solution.

Embodiment 2

[0041] A polyvinylidene fluoride hydrophobic separation membrane, comprising the following raw materials in parts by weight:

[0042] 20 parts polyvinylidene fluoride

[0043] 85 parts of N,N-dimethylformamide

[0044] 5 parts n-butanol

[0045] Butyl acetate 5 parts

[0046] Tributyl Phosphate 5 parts

[0047] Polyethylene glycol PEG-1000 10 parts

[0048] Anhydrous Lithium Chloride 5 parts

[0049] Sodium chloride 5 parts

[0050] 500 parts of deionized water

[0051] Alcohol 10 parts

[0052] 10 parts isopropyl alcohol

[0053] 5 parts of hydrophobic coating solution.

Embodiment 3

[0055] A polyvinylidene fluoride hydrophobic separation membrane, comprising the following raw materials in parts by weight:

[0056] 17 parts polyvinylidene fluoride

[0057] 80 parts of N,N-dimethylformamide

[0058] 4 parts n-butanol

[0059] 4 parts butyl acetate

[0060] 4 parts tributyl phosphate

[0061] Polyethylene glycol PEG-1000 7 parts

[0062] Anhydrous Lithium Chloride 4 parts

[0063] Sodium chloride 4 parts

[0064] 400 parts of deionized water

[0065] Alcohol 7 parts

[0066] 7 parts isopropyl alcohol

[0067] 3 parts of hydrophobic coating solution.

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PUM

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Abstract

The invention relates to a polyvinylidene fluoride lyophobic separation membrane and a preparation method thereof, and belongs to the technical field of lyophobic separation membranes. The polyvinylidene fluoride lyophobic separation membrane comprises the following raw materials in parts by weight: 15-20 parts of polyvinylidene fluoride, 75-85 parts of N,N-dimethyl formamide, 3-5 parts of n-butyl alcohol, 3-5 parts of butyl acetate, 3-5 parts of tributyl phosphate, 5-10 parts of polyethylene glycol PEG-1000, 3-5 parts of anhydrous lithium chloride, 3-5 parts of sodium chloride, 300-500 parts of deionized water, 5-10 parts of alcohol, 5-10 parts of isopropyl alcohol and 2-5 parts of a lyophobic coating. The polyvinylidene fluoride lyophobic separation membrane provided by the invention has hydrophobicity and is capable of preventing contamination.

Description

technical field [0001] The invention relates to a separation membrane and a preparation method thereof. More specifically, the invention relates to a polyvinylidene fluoride hydrophobic separation membrane and a preparation method thereof, belonging to the technical field of hydrophobic separation membranes. Background technique [0002] In recent decades, polymer membranes have been widely used in various gas and liquid separation fields, such as microfiltration, ultrafiltration, reverse osmosis and nanofiltration, and polyvinylidene fluoride (PVDF) membranes have become the most widely used membranes due to their excellent comprehensive performance. One of the wide range of polymer membranes. Polyvinylidene fluoride (PVDF) has good thermal stability, chemical stability and mechanical strength. The main preparation method of polyvinylidene fluoride (PVDF) membrane is the phase inversion method. During the preparation process of phase inversion, the structure and propertie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D69/02B01D71/34
CPCB01D71/34B01D67/0011B01D69/02B01D2325/38
Inventor 廖正康
Owner 廖正康
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