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Method for preparing polyphenylene-sulfide-based strongly acidic ion exchange fiber

A technology of ion exchange fiber and polyphenylene sulfide fiber, which is applied in the field of preparation of strong acid ion exchange fiber, can solve complex irradiation grafting process and other problems, and achieve the effects of simplified preparation process, reduced production cost and easy operation

Inactive Publication Date: 2013-03-13
ZHENGZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the complex irradiation grafting process for preparing strong acid ion exchange fibers in the prior art, and provide a method for preparing polyphenylene sulfide-based strong acid ion exchange fibers that is easy to operate and low in cost

Method used

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  • Method for preparing polyphenylene-sulfide-based strongly acidic ion exchange fiber

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Effect test

Embodiment 1

[0035] The preparation method of polyphenylene sulfide-based strong acid ion exchange fiber of the present invention, its detailed steps are as follows:

[0036] a. Friedel-Crafts crosslinking reaction: put 1.0800g of polyphenylene sulfide fiber and 40mL of organic solvent 1,2-dichloroethane into a 100mL three-necked flask, swell at room temperature for 20h, and add crosslinking agent chlorine after swelling Diethyl ether 0.35mL, catalyst anhydrous tin tetrachloride 0.55mL, under the stirring of a magnetic stirrer, heat the reaction solution to 48°C in an oil bath, react at this temperature for 12h, cool to room temperature after the reaction, and the obtained product Washing with distilled water, after washing, boil the product in a reactor with HCl with a concentration of 1mol / L for 6h, wash with distilled water until neutral, then extract the product with acetone in a solvent extraction device for 6h, and then The acetone in the product was washed with distilled water to re...

Embodiment 2

[0039] The preparation method of polyphenylene sulfide-based strong acid ion exchange fiber of the present invention, its detailed steps are as follows:

[0040] a. Friedel-Crafts crosslinking reaction: put 1.0801g of polyphenylene sulfide fiber and 40mL of organic solvent 1,2-dichloroethane into a 100mL three-necked flask, swell at room temperature for 12h, and add crosslinking agent chlorine after swelling Diethyl ether 0.35mL, catalyst anhydrous tin tetrachloride 0.55mL, stir with a magnetic stirrer, heat the reaction solution to 40°C in an oil bath, react at 40°C for 12h, cool to room temperature after the reaction, and cool the cooled The product was washed with distilled water. After washing, it was boiled for 6 hours with HCl with a concentration of 1 mol / L in the reactor. After boiling, it was washed with distilled water until it was neutral, and the product obtained was extracted with acetone for 6 hours in a solvent extraction device, and then used The acetone in the...

Embodiment 3

[0043] The preparation method of polyphenylene sulfide-based strong acid ion exchange fiber of the present invention, its detailed steps are as follows:

[0044] a. Friedel-Crafts crosslinking reaction: put 10.8005g of polyphenylene sulfide fiber and 130mL of organic solvent 1,2-dichloroethane into a 250mL three-necked flask, and swell at room temperature for 12h. After swelling, add the crosslinking agent chlorine Methyl ether 3.7mL, catalyst anhydrous tin tetrachloride 5.8mL, stir with a magnetic stirrer, heat the reaction solution to 50°C in an oil bath, react at 50°C for 12h, cool to room temperature after the reaction, and cool the cooled The product was washed with distilled water. After washing, it was boiled for 9 hours with HCl with a concentration of 1 mol / L in the reactor. After boiling, it was washed with distilled water until neutral, and then the product obtained was extracted with absolute ethanol in a solvent extraction device for 12 hours. Then wash and remove...

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Abstract

The invention discloses a method for preparing a polyphenylene-sulfide-based strongly acidic ion exchange fiber. The method comprises the following steps of: fully swelling a polyphenylene sulfide fiber serving as a raw material in an organic solvent; adding a coupling agent and a catalyst into the polyphenylene sulfide fiber after the polyphenylene sulfide fiber is swelled; under the action of no stirring, raising the temperature of a reaction solution of the polyphenylene sulfide fiber for coupling reaction; after the reaction is finished, washing an obtained product, and performing acid boiling, extraction and drying treatment sequentially so as to obtain a coupled polyphenylene sulfide fiber; fully swelling the obtained coupled polyphenylene sulfide fiber in the organic solvent, adding a sulphonated reagent after the coupled polyphenylene sulfide fiber is swelled; under the action of no stirring, raising the temperature of the reaction solution for sulphonation reaction; after thereaction is finished, washing an obtained product and performing extraction and drying treatment sequentially, and treating to obtain the polyphenylene-sulfide-based strongly acidic ion exchange fiber. The polyphenylene sulfide fiber serving as the raw material has low cost and is readily available; compared with the prior art, the method has the advantage of obviously reducing the production cost; furthermore, in the preparation method, a radiation grafting technology is avoided totally, and the process is simple and easy to operate.

Description

technical field [0001] The invention relates to a preparation method of a strong acid ion exchange fiber, in particular to a preparation method of a polyphenylene sulfide-based strong acid ion exchange fiber. Background technique [0002] Ion exchange fiber (IEF) is a new generation of functional adsorption separation material after granular ion exchange resin. Because of its advantages of fast exchange speed, small fluid resistance, and easy regeneration, it is widely used in technical fields such as personal respiratory protection, gas purification, environmental protection, biochemical industry, and hydrometallurgy. [0003] So far, the preparation methods of strong acid ion exchange fibers mainly include grafting method and direct method: [0004] 1. Grafting method: the monomer styrene (ST) and divinylbenzene (DVB), through 60 co γ Irradiation initiated grafting onto polypropylene (PP) fiber matrix to obtain PP-ST-DVB grafted fibers, which were then sulfonated to pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/165D06M13/256D06M11/55B01J20/26B01J20/30B01J39/18C02F1/42D06M101/30B01J39/19
Inventor 原思国李仙蕊吕邢鑫代立波黄佳佳周冬菊赵林秀周从章
Owner ZHENGZHOU UNIV
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