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Preparation method of polystyrene sulfonic acid type ion exchange resin for water purification

A technology of polystyrene sulfonic acid ion exchange resin, applied in the field of polystyrene sulfonic acid ion exchange resin, to achieve the effects of excellent specific surface area, fast ion exchange speed and high sulfonation efficiency

Active Publication Date: 2016-01-06
ANHUI WANDONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main factors that determine the performance of ion exchange resins are the specific surface area and pore structure. The specific surface area, thermal stability and ion exchange speed of the current cation exchange resins for pure water preparation need to be improved urgently.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of polystyrene sulfonic acid type ion exchange resin for water purification, comprising the steps of:

[0029] S1. Stir styrene, divinylbenzene, tribromomethane, methanol, and benzoyl peroxide at a stirring temperature of 48°C to obtain the first preform;

[0030] S2. Mix water, polyvinyl alcohol, and 2-methyl methacrylate evenly, add methylene blue and stir until completely dissolved, add the first preform and stir to obtain the second preform;

[0031] S3. Add chloroform to the second prefabricated material for swelling, then add sulfuric acid solution and chlorosulfonic acid to stir, distill off the chloroform, lower the temperature, add water to stand, remove the water layer, wash the product until neutral, and obtain the third prefabricated material;

[0032] S4. Add sodium hydroxide solution to the third prefabricated material and stir, the stirring temperature is 48°C, filter, wash the product until neutral, add water and stir, heat to 95°C, ...

Embodiment 2

[0034] A preparation method of polystyrene sulfonic acid type ion exchange resin for water purification, comprising the steps of:

[0035] S1. Stir 30 parts of styrene, 10 parts of divinylbenzene, 0.01 part of tribromomethane, 3 parts of methanol, and 0.1 part of benzoyl peroxide in parts by weight. The stirring time is 40 minutes, and the stirring temperature is 45° C. to obtain the first prefabricated material;

[0036] S2. Mix 10 parts of water, 1 part of polyvinyl alcohol, and 5 parts of 2-methyl methacrylate in parts by weight, add 0.1 part of methylene blue and stir until completely dissolved, add 40 parts of the first prefabricated material, and heat up from room temperature to 50 Stir at °C for 2 hours, heat up to 75°C and stir for 50 minutes, heat up to 88°C and stir for 90 minutes, cool to 80°C and stir for 30 minutes, heat up to 95°C and stir for 15 minutes, cool to 50°C and stir for 3 hours to obtain the second prefabricated material;

[0037]S3. Add 70 parts of c...

Embodiment 3

[0040] A preparation method of polystyrene sulfonic acid type ion exchange resin for water purification, comprising the steps of:

[0041] S1. Stir 50 parts of styrene, 5 parts of divinylbenzene, 0.08 part of tribromomethane, 1 part of methanol, and 0.5 part of benzoyl peroxide in parts by weight. The stirring time is 20 minutes and the stirring temperature is 50 ° C to obtain the first prefabricated material;

[0042] S2. Mix 4 parts of water, 2 parts of polyvinyl alcohol, and 1 part of 2-methyl methacrylate in parts by weight, add 0.25 parts of methylene blue and stir until completely dissolved, add 20 parts of the first prefabricated material, and heat up from room temperature to 65 Stir at °C for 1 hour, heat up to 82°C and stir for 20 minutes, heat up to 92°C and stir for 70 minutes, cool down to 82°C and stir for 15 minutes, heat up to 98°C and stir for 5 minutes, cool down to 55°C and stir for 1 hour to obtain the second prefabricated material;

[0043] S3. Add 50 part...

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PUM

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Abstract

The invention discloses a preparation method of polystyrene sulfonic acid type ion exchange resin for water purification. The preparation method comprises the following steps: stirring styrene, divinylbenzene, tribromomethane, methanol and benzoyl peroxide, in order to obtain a first preformed material; uniformly mixing water, polyvinyl alcohol and 2-methyl methacrylate, adding methylene blue with stirring till complete dissolving, and adding the first preformed material with stirring to obtain a second preformed material; adding chloroform into the second preformed material for swelling, adding a sulfuric acid solution and chlorosulfonic acid with stirring, evaporating the chloroform, cooling the temperature, adding water, carrying out a standing, removing a water layer, and washing a product till the pH is 7 to obtain a third preformed material; adding a sodium hydroxide solution into the third preformed material with stirring, carrying out a filtering, washing a product till the pH is 7, adding water with stirring, heating to 92-97 DEG C, carrying out an insulation and a filtering, adding absolute ethyl alcohol with stirring for backflow, carrying out cooling and filtering, washing a product till the pH is 7, and carrying out a drying to obtain the polystyrene sulfonic acid type ion exchange resin for water purification.

Description

technical field [0001] The invention relates to the technical field of polystyrene sulfonic acid ion exchange resins, in particular to a preparation method of polystyrene sulfonic acid ion exchange resins for water purification. Background technique [0002] my country has been producing and applying ion exchange resins since the 1950s. After more than half a century of development, the preparation and application technology of domestic conventional ion exchange resins has been relatively mature, and the level is comparable to that of foreign countries. As boiler feed water, drinking water, and electronic water have increasingly high purity requirements for ion-exchange effluent, conventional ion-exchange resin production and application technologies have been continuously improved, and many new production processes have emerged. [0003] Ion exchange resin is a kind of network structure polymer compound with active groups. In its molecular structure, one part is the matri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F212/36C08F8/38
Inventor 姚能平樊致娟刘建荣梅德华宣浩洋
Owner ANHUI WANDONG CHEM
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