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High-strength ion exchange resin with double-channel macroporous structure and preparation method thereof

An ion exchange resin, high-strength technology, used in ion exchange, anion exchange, cation exchange materials, etc., can solve the problem of few macroporous resins, and achieve the effect of good mechanical strength and improved strength

Active Publication Date: 2013-11-13
JIANGSU SUQING WATER TREATMENT ENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the prior art, there are many relevant research reports on the preparation method of macroporous ion exchange resins, but there are few reports on how to improve the strength of macroporous resins.

Method used

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  • High-strength ion exchange resin with double-channel macroporous structure and preparation method thereof
  • High-strength ion exchange resin with double-channel macroporous structure and preparation method thereof

Examples

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Embodiment 1

[0024] A high-strength ion-exchange resin with a double-channel macroporous structure, the high-strength ion-exchange resin is composed of a styrene matrix of 87% by weight, a crosslinking agent of 12% by weight and an initiator of 1% by weight After polymerization, a polymer is formed. During the polymerization process, the polymer forms a porous sponge-like skeleton with uniformly distributed large pores and small pores under the action of two different porogens. The pore diameter of the large pores is 500~1500nm. 2~3 times or more of the aperture of the small channel.

[0025] A preferred embodiment in this embodiment is that the monomer in the polymer is a radical polymerizable monomer with a single double bond, and the radical polymerizable monomer is styrene.

[0026] In the preferred embodiment of this embodiment, the crosslinking agent is a radical polymerizable monomer having two or more double bonds, and the radical polymerizable monomer is divinylbenzene.

[0027] ...

Embodiment 2

[0039] A high-strength ion-exchange resin with a double-channel macroporous structure, the high-strength ion-exchange resin is composed of 91% by weight of styrene-based matrix, 8% by weight of cross-linking agent and 1% by weight of initiator The agent is polymerized to form a polymer. During the polymerization process, the polymer forms a porous sponge-like skeleton with uniformly distributed large pores and small pores under the action of two different porogens. The pore diameter of the large pores is 500~1500nm It is 2 to 3 times or more than the aperture of the small channel.

[0040] In the preferred embodiment of this embodiment, the cross-linking agent is a free radical polymerizable monomer having two double bonds, a free radical polymerizable monomer divinylbenzene.

[0041] In the preferred embodiment of this embodiment, the initiator is a free radical polymerization initiator including peroxides and azos; wherein, the oxides free radical polymerization initiator is...

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Abstract

The invention discloses a high-strength ion exchange resin with a double-channel macroporous structure and a preparation method thereof. The high-strength ion exchange resin is prepared by polymerization of a styrene system and / or acrylic acid system matrix, a cross-linking agent and an initiator to generate a condensate, which forms a skeleton with a porous sponginess structure containing uniformly distributed macropores and micropores, under effects of two different pore forming agents. The preparation method is as below: mixing the matrix, the cross-linking agent, a macropore forming agent and a micropore pore forming agent, and heating; then adding the initiator, and mixing uniformly; adding the mixture into hot water, then stirring and adjusting the stirring speed, and carrying out an insulation reaction in the hot water; heating to 95 DEG C, and insulating and reacting for 3 h; washing the polymer with cooling water, drying and screening out polymer microballoons with appropriate granularity; moving out the pore forming agents through a distillation or extraction mode; and carrying out acidic or alkali treatment to obtain the high-strength ion exchange resin with the double-channel macroporous structure. The resin has high mechanical strength.

Description

technical field [0001] The invention relates to an ion exchange resin for treating condensed water, in particular to a preparation method of a high-strength ion exchange resin with a double-channel macroporous structure. Background technique [0002] Ion exchange resin is a polymer compound with functional groups (active groups for exchanging ions), network structure and insolubility. Usually spherical particles. Ion exchange resins can also be classified into styrene resins and acrylic resins according to the type of matrix. The type of chemically active groups in the resin determines the main properties and categories of the resin. First of all, it is divided into two categories: cationic resin and anionic resin, which can perform ion exchange with cations and anions in the solution respectively. Cationic resins are further divided into strong acidic and weakly acidic, and anionic resins are further divided into strongly alkaline and weakly alkaline. [0003] Because i...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/10C08F220/06C08F220/44C08F218/08C08F212/36C08F212/34C08F222/14C08F216/14C08J9/26C08J9/28C08J9/36B01J39/20B01J41/14
Inventor 钱平张玉格程晓辉
Owner JIANGSU SUQING WATER TREATMENT ENG GROUP
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