High-temperature-resistant organic-solvent-resistant separating membrane material, separating membrane, and preparation method thereof

A technology resistant to organic solvents and high temperature, applied in semi-permeable membrane separation, chemical instruments and methods, membrane technology, etc., can solve the problems of low cost, poor porosity, hydrophobicity, poor corrosion resistance to organic solvents, poor porosity, etc.

Active Publication Date: 2018-01-09
安徽旭云商务咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The separation membrane is the core of the membrane separation process, and the membrane material is the basis for the development of the separation membrane. At present, the main polymer materials widely used in the preparation of separation membranes are fluorine-containing resins such as polyvinylidene fluoride (PVDF). Good performance, generally used to prepare ultrafiltration and microfiltration membranes, but its hydrophobicity and organic solvent corrosion resistance are poor; sulfone-based resins such as polysulfone (PSF), polyethersulfone (PES), etc. Good film-forming properties, generally used for ultrafiltration and nanofiltration membranes, but the corrosion resistance of organic solvents is not ideal; polyvinyl chloride (PVC) has low cost and general porosity, but its hydrophobicity, solvent resistance, and corrosion resistance Poor temperature resistance; polyamide (PA) and polyimide (PI), which have poor porosity, are generally used for nanofiltration and reverse osmosis membranes, and have poor acid and alkali corrosion resistance; polypropylene (PP) has poor porosity The thermoforming method is more environmentally friendly and suitable for microfiltration membranes, but its hydrophobicity, solvent resistance and heat resistance are poor

Method used

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  • High-temperature-resistant organic-solvent-resistant separating membrane material, separating membrane, and preparation method thereof
  • High-temperature-resistant organic-solvent-resistant separating membrane material, separating membrane, and preparation method thereof
  • High-temperature-resistant organic-solvent-resistant separating membrane material, separating membrane, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] (1) Preparation of carboxyl-containing polymer crude product:

[0070] 28.7g of 4,4'-dichlorodiphenylsulfone, 1g of sodium oxalate, 5g of toluene, 2.9g of 1,1-bis(4-hydroxyphenyl)phenylethane, 2-(bis-(4- Add 28.8g of hydroxyphenyl)methyl)benzoic acid, 10.6g of sodium carbonate and 200g of 1,3-dimethyl-2-imidazolidinone into the reaction kettle, and dehydrate at 160°C for 0.5h under the protection of nitrogen , continue to react at a temperature of 190°C for 1 hour to obtain a viscous polymer solution, then cool the polymer solution to 25°C, pour it into water while stirring, and precipitate a crude polymer in a line shape;

[0071] (2) Purification of carboxyl-containing polymer crude product:

[0072] The crude polymer was boiled, drained, crushed, washed with deionized water and ethanol, filtered, and the filter cake was collected and dried at 150°C for 2 hours to obtain a purified carboxyl-containing polymer;

[0073] (3) Carboxylation of carboxyl-containing polyme...

Embodiment 2

[0085] (1) Preparation of carboxyl-containing polymer crude product:

[0086] 1,6-bis(4-fluorobenzoyl)hexamethylenediamine 36g, potassium sorbate 5g, xylene 50g, 1,1-bis(4-hydroxyphenyl)phenylethane 5.8g, 2-( 25.6g of bis-(4-hydroxyphenyl)methyl)benzoic acid, 8.2g of sodium hydroxide and 300g of N-methylpyrrolidone were added to the reaction kettle, and under the protection of nitrogen, the dehydration reaction was carried out at a temperature of 170°C for 1.5h. Continue the reaction at 200°C for 5 hours to obtain a viscous polymer solution, then cool the polymer solution to 150°C, pour it into water while stirring, and precipitate the crude polymer in line shape;

[0087] (2) Purification of carboxyl-containing polymer crude product:

[0088] The crude polymer was boiled, drained, crushed, then washed with deionized water and acetone, filtered, and the filter cake was collected and dried at a temperature of 100°C for 12 hours to obtain a purified carboxyl-containing polymer;...

Embodiment 3

[0104] (1) Preparation of carboxyl-containing polymer crude product:

[0105] 21.8g of 4,4'-difluorobenzophenone, 20g of sodium p-aminobenzenesulfonate, 60g of toluene, 4.56g of bisphenol A, 25.6g of 2-(bis-(4-hydroxyphenyl)methyl)benzoic acid g, 4.8g of lithium hydroxide and 250g of N-cyclohexylpyrrolidone were added to the reaction kettle, and under the protection of nitrogen, dehydration reaction was carried out at a temperature of 190°C for 4h, and the reaction was continued at a temperature of 230°C for 6h to obtain a viscous polymer solution. Cool the polymer solution to 60°C, pour it into water while stirring, and precipitate the crude polymer in line form;

[0106] (2) Purification of carboxyl-containing polymer crude product:

[0107] The crude polymer was boiled, drained, crushed, washed with deionized water and ethanol, filtered, and the filter cake was collected and dried at 150°C for 1 hour to obtain a purified carboxyl-containing polymer;

[0108] (3) Carboxyla...

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Abstract

The invention relates to a high-temperature-resistant organic-solvent-resistant separating membrane material, a separating membrane, and a preparation method thereof, and belongs to the field of highmolecular material. The high-temperature-resistant organic-solvent-resistant separating membrane material is composed of, by weight, 20 to 40 parts of a high-temperature-resistant aromatic ring matrixcontaining resin, 20 to 40 parts of a carboxyl-containing polymer, 0 to 60 parts of a matrix reinforcing material, 0.1 to 10 parts of a water soluble pore forming agent, and 100 to 300 parts of a solvent. The high-temperature-resistant organic-solvent-resistant separating membrane prepared from the high-temperature-resistant organic-solvent-resistant separating membrane material possesses excellent corrosion resistance, heat resistance, mechanical properties, pollution resistance, and high separating efficiency, is a high performance separating membrane, and is promising in application prospect.

Description

technical field [0001] The invention relates to a high-temperature-resistant and organic-solvent-resistant separation membrane material, a separation membrane and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] Membrane separation science is a new scientific research on separation that rose rapidly after the 1960s. Membrane separation has been widely used in food, medicine, biology, energy, water treatment, bionics, etc. The field has had a huge impact on human production and life, and has become one of the most important means in today's separation science. The separation membrane is the core of the membrane separation process, and the membrane material is the basis for the development of the separation membrane. At present, the main polymer materials widely used in the preparation of separation membranes are fluorine-containing resins such as polyvinylidene fluoride (PVDF). Good performance, generally used to prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/02B01D67/00B01D71/68C08G75/23C08J5/18
Inventor 张刚胡全杨杰严光明卢杰宏袁书山王孝军龙盛如
Owner 安徽旭云商务咨询有限公司
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