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Ion exchange resin composition, preparation method thereof and membrane material formed by ion exchange resin composition

A technology of ion exchange resin and ion polymer, applied in the direction of chemical instruments and methods, membrane, membrane technology, etc., can solve the problems of low membrane strength, poor dimensional stability, swelling deformation, etc.

Active Publication Date: 2021-04-23
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the desalination process using the inverted electrodialysis module, the structural design of the ion exchange membrane will introduce more ions in order to maintain high-performance electrochemical properties. When the ion content is higher, it is easy to cause excessive membrane material. Swelling, low film strength and low chemical resistance, so performance and physical properties cannot be balanced
Membranes with high swelling properties have poor dimensional stability. After being installed in the module for a period of time, there will be problems of swelling and deformation. Therefore, there will be water leakage in the module during operation, so that the desalination effect and water flux are insufficient. , may not even operate continuously

Method used

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  • Ion exchange resin composition, preparation method thereof and membrane material formed by ion exchange resin composition
  • Ion exchange resin composition, preparation method thereof and membrane material formed by ion exchange resin composition
  • Ion exchange resin composition, preparation method thereof and membrane material formed by ion exchange resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] After getting 70 parts by weight of sulfonate polyester (model AQ48, available from Eastman) with hydroxyl or carboxyl groups at the end and mixing 2 parts by weight of ethylene glycol with dimethylacetamide (DMAC) of 102.5 parts by weight, add 7.72 1,2,4,5-pyromellitic dianhydride (benzene-1,2:4,5-tetracarboxylic dianhydride; PMDA) in parts by weight forms a solution. The solution was heated to 130° C. for 3 hours to prepare a solution (the first intermediate) with the ionic polymer, and then the temperature was lowered to 90° C.

[0062]20 parts by weight of epoxy-based compounds (epoxy equivalent EEW: 215 grams / equivalent) are dissolved in dimethylacetamide of 20 parts by weight, and then the above-mentioned solution (first intermediate) with ionic polymer is added , heated to 90°C and reacted for 2 hours, and after cooling down to room temperature, the first mixed solution can be obtained. This first mixed solution is an alkyd resin homogeneous solution, which is a...

Embodiment 2

[0074] After getting 80 parts by weight of sulfonate polyester (type AQ55S, purchased from Eastman) whose terminal is a hydroxyl or carboxyl group, mixed with 2 parts by weight of ethylene glycol and 107 parts by weight of dimethylacetamide (DMAC), add 1.93 Parts by weight of 1,2,4,5-pyromellitic dianhydride (PMDA) form a solution. The solution was heated to 130° C. for 3 hours to prepare a solution (the first intermediate) with the ionic polymer, and then the temperature was lowered to 90° C.

[0075] 18 parts by weight of epoxy-based compounds (epoxy equivalent EEW: 215 grams / equivalent) are dissolved in 25 parts by weight of dimethylacetamide, then add the above-mentioned solution (the first intermediate) with the ionic polymer, and heat After reacting at 90° C. for 2 hours, and then cooling down to room temperature, the first mixed solution can be obtained. This first mixed solution is an alkyd resin homogeneous solution, which is a fluid dark amber liquid.

[0076] Get ...

Embodiment 3

[0087] After getting 80 parts by weight of sulfonate polyester (type AQ55S, purchased from Eastman) whose terminal is a hydroxyl or carboxyl group, mixed with 2 parts by weight of ethylene glycol and 107 parts by weight of dimethylacetamide (DMAC), add 1.93 Parts by weight of 1,2,4,5-pyromellitic dianhydride (PMDA) form a solution. The solution was heated to 130° C. for 3 hours to prepare a solution (the first intermediate) with the ionic polymer, and then the temperature was lowered to 90° C.

[0088] 18 parts by weight of epoxy-based compounds (epoxy equivalent EEW: 215 grams / equivalent) are dissolved in 25 parts by weight of dimethylacetamide, then add the above-mentioned solution (the first intermediate) with the ionic polymer, and heat React at 90° C. for 2 hours, and after cooling down to room temperature, the first mixed solution can be obtained. This first mixed solution is an alkyd resin homogeneous solution, which is a fluid dark amber liquid.

[0089] Take 10 g of...

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Abstract

The invention discloses an ion exchange resin composition, a preparation method thereof and an ion exchange resin membrane material formed by the ion exchange resin composition. The ion exchange resin composition in the embodiment comprises a cross-linking agent and an ionic compound with sulfonate ions, wherein the ionic compound is formed by reacting an ionic monomer or an ionic polymer with the sulfonate ions, and the terminal of the molecular structure of the ionic monomer or the ionic polymer is hydroxyl or carboxyl, and epoxy resin. The ion exchange resin composition is subjected to a cross-linking reaction to obtain the ion exchange resin with a net structure.

Description

technical field [0001] The invention relates to an ion-exchange resin composition, its preparation method and its formed membrane material, and in particular to a low swelling ion-exchange resin composition, its preparation method and its formed ion-exchange resin membrane material. Background technique [0002] In recent years, due to the rapid development of industries, the demand for water is increasing day by day, and with global climate change and frequent extreme weather events, the distribution of water resources has been seriously affected, making floods and droughts more serious. Due to the increasing global demand for fresh water, it is urgent to develop new water sources and increase the utilization rate of reclaimed water. The development of various emerging reclaimed water technologies has become the focus of water resources development in various countries, among which water desalination is the most important Important and most useful and continue to flourish. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L87/00C08K5/00C08G81/00C08J3/24C08J5/22
CPCC08K5/0025C08G81/00C08J3/24C08J5/2275C08J2387/00B01D61/422B01D71/48B01D69/125C08L87/005B01D2323/30B01D2325/42C08G59/1411B01D69/02B01D2323/40C08G59/4064C08G63/916C08G63/6886Y02A20/124B01D71/82C08G63/91C08K5/34922C08K5/13
Inventor 范舒慈陈魏素美苏一哲杨欣茹
Owner IND TECH RES INST