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Preparation method of strong-acid cation-exchange resin

A cation exchange and resin technology, which is applied in the field of strong acid cation exchange resin preparation, can solve the problems that the specific surface area, thermal stability and ion exchange speed of cation exchange resin cannot meet the special requirements of strong acid cation exchange resin, and achieve the ion exchange speed Fast, good hydrophilicity, excellent product size and pore diameter

Inactive 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 specific surface area and pore structure. The current specific surface area, thermal stability and ion exchange rate of cation exchange resins for pure water preparation cannot meet the special requirements of pure water preparation for strong acid cation exchange resins.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of preparation method of strong acid cation exchange resin, comprises the steps:

[0030] S1. Stir and mix styrene, divinylbenzene, tribromomethane, 1,4-butanediol, and benzoyl peroxide at a stirring temperature of 44° C. to obtain the first preform;

[0031] S2. Send sodium lignosulfonate into the reaction furnace, heat up under nitrogen protection, keep warm, cool down, grind, add 1,3-dichloro-2-propanol, polyalkylsiloxane, and sodium hydroxide for stirring , the stirring temperature is 92°C, adding hydrochloric acid and stirring, filtering, washing with deionized water, and drying to obtain the second prefabricated material;

[0032] S3. Mix water, polyvinyl alcohol, and ethyl acrylate evenly, add methylene blue and stir until it dissolves completely, add the first prefabricated material, heat up and stir to obtain the third prefabricated material;

[0033] S4. Add chloroform to the third prefabricated material for swelling, add sulfuric acid solution, sulfur...

Embodiment 2

[0036] A kind of preparation method of strong acid cation exchange resin, comprises the steps:

[0037] S1. Stir 30 parts of styrene, 5 parts of divinylbenzene, 0.2 part of tribromomethane, 4 parts of 1,4-butanediol, and 0.2 part of benzoyl peroxide in parts by weight. The stirring time is 26 minutes, and the stirring temperature is 50°C to obtain the first prefabricated material;

[0038] S2. Weigh 44 parts of sodium lignosulfonate by weight into the reaction furnace, heat up to 110°C under nitrogen protection, and keep warm for 42mmin; heat up to 166°C, keep warm for 24min; cool down to 156°C, keep warm for 15min; 172°C, keep warm for 28min, cool down to room temperature, grind, add 2 parts of 1,3-dichloro-2-propanol, 55 parts of polyalkylsiloxane, 11 parts of sodium hydroxide for stirring, the stirring temperature is 94°C, The stirring time is 40min, add 17 parts of hydrochloric acid with a concentration of 4.2mol / L and stir for 23min, the stirring temperature is 50°C, fil...

Embodiment 3

[0043] A kind of preparation method of strong acid cation exchange resin, comprises the steps:

[0044] S1. Stir 36 parts of styrene, 4 parts of divinylbenzene, 0.24 parts of tribromomethane, 2 parts of 1,4-butanediol, and 0.6 parts of benzoyl peroxide in parts by weight. The stirring time is 20 minutes, and the stirring temperature is 55°C to obtain the first prefabricated material;

[0045] S2. Weigh 40 parts of sodium lignosulfonate by weight into the reaction furnace, heat up to 115°C under nitrogen protection, and keep warm for 40mmin; heat up to 168°C, keep warm for 20min; cool down to 158°C, keep warm for 12min; 174°C, keep warm for 26min, cool down to room temperature, grind, add 2.4 parts of 1,3-dichloro-2-propanol, 50 parts of polyalkylsiloxane, 13 parts of sodium hydroxide for stirring, the stirring temperature is 90°C, The stirring time is 44min, add 15 parts of hydrochloric acid with a concentration of 4.5mol / L and stir for 20min, the stirring temperature is 52°C...

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PUM

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Abstract

The invention discloses a preparation method of strong-acid cation-exchange resin. The method comprises the following steps: styrene, divinylbenzen, tribromomethane, 1,4-butylene glycol and benzoyl peroxide are mixed to obtain a first preformed material; a sodium lignosulfonate is sent into a reacting furnace, a heating is carried out under the protection of nitrogen, an insulation, a cooling and a grinding are carried out, 1,3-dichloropropanol, polyalkyl silonxane and sodium hydroxide are added with stirring, hydrochloric acid is added with stirring, a filtering, a washing and a drying are carried out to obtain a second preformed material; water, polyvinyl alcohol and ethyl acrylate are mixed, methylene blue is added with stirring, a first preformed material is added with stirring, chloroform is added for swelling, a sulfuric acid solution, sulfur trioxide and a second preformed material are added with stirring, chloroform is evaporated, cooling is carried out, water is added, a standing is carried out, a water layer is removed, a washing is carried out till the pH of the solution is 7, a sodium hydroxide solution is added with stirring, a filtering is carried out, a product is washed till the pH is 7, water is added with stirring, heating, insulation and filtering are carried out, absolute ethyl alcohol is added for backflow, cooling, filtering and washing are carried out, and a drying is carried out to obtain the strong-acid cation-exchange resin.

Description

technical field [0001] The invention relates to the technical field of strong acid cation exchange resins, in particular to a preparation method of strong acid cation exchange resins. 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 matrix skeleton of the resin, and the other part i...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F212/36C08F8/36B01J39/20
Inventor 刘建荣樊致娟姚能平梅德华宣浩洋
Owner ANHUI WANDONG CHEM
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