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Ion exchange resin, and preparation method and application thereof

An ion exchange resin, ion exchange group technology, applied in ion exchange, cation exchange, anion exchange and other directions, can solve the problems of slow ion exchange speed, small specific surface area, large running resistance, etc. The effect of increasing specific surface area and high fluid resistance

Inactive Publication Date: 2019-11-26
上海洁晟环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the particle size of the ion exchange resin prepared in the above two patent documents has a great influence on the ion exchange rate. When the particle size is large, the running resistance is small, but at the same time the specific surface area is small, and the ion exchange rate becomes slow; The surface area is large, although the ion exchange speed becomes faster, but the running resistance is relatively large and the energy consumption is large
[0006] Therefore, it is a huge challenge to develop a new type of ion exchange resin, get rid of the influence of ion exchange resin particle size and size uniformity on ion exchange efficiency, and achieve the purpose of efficiently increasing ion exchange rate.

Method used

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  • Ion exchange resin, and preparation method and application thereof

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Effect test

Embodiment 1

[0051] This embodiment provides a kind of cation exchange resin and preparation method thereof

[0052] Wherein, the fiber average diameter of the cation exchange resin is 200nm.

[0053] The preparation method of present embodiment ion exchange resin is as follows:

[0054] (1) Copolymerize styrene and butadiene to obtain a copolymer, wherein butadiene is 5wt% of the styrene mass; add the copolymer and benzophenone to DMAc, stir for 5h, and prepare a mass fraction of 10wt % spinning solution, wherein, benzophenone is 2wt% of copolymer quality;

[0055] (2) Electrospinning the spinning solution obtained in step (1) to obtain an electrospun fiber membrane, wherein the electrospinning voltage is 20kV, the spinning distance is 20cm, the spinning speed is 1mL / h, and the spinning temperature is 23°C , with a relative humidity of 40%, to obtain an electrospun fiber membrane;

[0056] (3) irradiating the electrospun fiber membrane obtained in step (2) under ultraviolet light for 1...

Embodiment 2

[0058] This embodiment provides a kind of cation exchange resin and preparation method thereof

[0059] Wherein, the fiber average diameter of the cation exchange resin is 180nm.

[0060] The preparation method of present embodiment ion exchange resin is as follows:

[0061] (1) Styrene and butadiene are copolymerized to obtain a copolymer, wherein butadiene is 7wt% of the styrene mass; the copolymer and benzophenone are added in butanone, stirred for 6h, and the mass fraction is prepared as The spinning solution of 12wt%, wherein, benzophenone is 2wt% of copolymer quality;

[0062] (2) Electrospinning the spinning solution obtained in step (1) to obtain an electrospinning fiber membrane, wherein the electrospinning voltage is 15kV, the spinning distance is 23cm, the spinning speed is 1.5mL / h, and the spinning temperature is 25 ℃, relative humidity 45%, to obtain the electrospun fiber membrane;

[0063] (3) irradiating the electrospun fiber membrane obtained in step (2) und...

Embodiment 3

[0065] This embodiment provides a kind of anion exchange resin and preparation method thereof

[0066] Wherein, the average fiber diameter of the anion exchange resin is 230nm.

[0067] The preparation method of present embodiment ion exchange resin is as follows:

[0068] (1) Styrene and butadiene are copolymerized to obtain a copolymer, wherein butadiene is 8wt% of the styrene mass; the copolymer and benzophenone are added in butanone, stirred for 8h, and the mass fraction is prepared as The spinning solution of 15wt%, wherein, benzophenone is 2wt% of copolymer quality;

[0069] (2) Electrospinning the spinning solution obtained in step (1) to obtain an electrospinning fiber membrane, wherein the electrospinning voltage is 22kV, the spinning distance is 17cm, the spinning speed is 2mL / h, and the spinning temperature is 40°C , with a relative humidity of 37%, to obtain an electrospun fiber membrane;

[0070] (3) The electrospun fiber membrane obtained in step (2) was irrad...

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Abstract

The invention provides ion exchange resin, and a preparation method and an application thereof. The ion exchange resin comprises an electrospun fiber film with an ion exchange group, and the fiber diameter of the electrospun fiber film is 150-250 nm; and the electrospun fiber film is a copolymer spun film. The fiber diameter of the ion exchange resin is controlled within the above range, and the pore diameter and the specific surface area of the ion exchange resin are effectively regulated, so the ion exchange efficiency of the ion exchange resin is improved. The preparation method adopts a copolymer spinning solution, the spinning process is smooth and is easy to implement, and optimized spinning process parameters are combined to continuously spin superfine fibers with a diameter of 150-250 nm.

Description

technical field [0001] The invention belongs to the technical field of membrane separation materials, and in particular relates to an ion exchange resin and its preparation method and application. Background technique [0002] Ion exchange resin is a kind of polymer compound with a network structure of functional groups. It consists of an insoluble three-dimensional network skeleton, functional groups connected to the skeleton and exchangeable Ions consist of three parts. [0003] Ion exchange resins are widely used for the removal of ions in water and for the preparation of deionized water in industry. At present, traditional ion exchange resins are prepared by modifying polystyrene or polyacrylate particles. The obtained ion exchange resins Generally granular, the particle size and size uniformity have a great influence on the operation. The size of resin particles is generally in the range of 0.3-1.2mm, most of them are between 0.4-0.6mm. [0004] CN106243265A uses a h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J39/18B01J41/12D04H1/728D01D5/00D01F6/42D06M11/55D06M10/06D06M10/08D06M101/20
CPCB01J39/18B01J41/12D04H1/728D01D5/003D01F6/42D06M11/55D06M10/06D06M10/08D06M2101/20
Inventor 张秀芳赵炯心陈越成
Owner 上海洁晟环保科技有限公司
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