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A kind of macroporous resin microsphere and its preparation method and application

A macroporous resin and microsphere technology, applied in the field of macroporous resin microspheres and their preparation, can solve the problems of pollution, chloride ion corrosion environment, etc., and achieve the effects of low cost and easy operation.

Inactive Publication Date: 2017-10-17
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the problems of severe chloride ion corrosion and environmental pollution due to the use of chloromethylation reagent chloromethyl ether in the chloromethylation process in the existing macroporous anion exchange resin microsphere preparation process problem, and provide a kind of macroporous resin microsphere and its preparation method and application

Method used

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  • A kind of macroporous resin microsphere and its preparation method and application
  • A kind of macroporous resin microsphere and its preparation method and application
  • A kind of macroporous resin microsphere and its preparation method and application

Examples

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Effect test

Embodiment 1

[0048] (1) Step S1: preparing an aqueous phase solution containing 0.02% by weight of methylene blue and 1% by weight of sodium chloride;

[0049] Step S2: Add 100g of water to a three-neck flask equipped with a stirrer, condenser, and airway, and take 3.0g, 4.0g, and 2.0g of styrene, diethylaminoethyl methacrylate, divinylbenzene, and heptane , 1.5g, after mixing completely, add into water, add 3.0g toluene solution containing 0.03g azobisisobutyronitrile to obtain the oil phase mixture;

[0050] (2) Mix the oil-phase mixture and the water-phase solution evenly at a stirring speed of 500rpm. When mixing, the mass ratio of the two is 1:10. Nitrogen is introduced to remove the air for 30min, and the temperature is 70°C for 5 hours, and then Adjust the temperature to 85° C., perform aging for 2 hours, wash and dry to obtain macroporous resin microspheres S1.

[0051] The appearance of the macroporous resin microsphere S1 that present embodiment makes is as follows figure 1 sho...

Embodiment 2

[0053] (1) Step S1: preparing an aqueous phase solution containing 1% by weight of methylene blue and 8% by weight of sodium bromide;

[0054] Step S2: Add 100 g of water to a three-necked flask equipped with a stirrer, a condenser tube, and an air guide tube, and take methyl methacrylate, dimethylaminoethyl methacrylate, ethylene glycol dimethacrylate, and toluene as 3.0 g, 4.0g, 2.0g, 1.5g, after mixing completely, add into water, add 3.0g of toluene solution containing 0.03g of dibenzoyl peroxide to obtain the oil phase mixture;

[0055] (2) Mix the oil phase mixture and the water phase solution evenly at a stirring speed of 500rpm. When mixing, the mass ratio of the two is 1:10. Nitrogen is introduced to remove the air for 30min, and the temperature is 75°C. React for 8 hours, and then Adjust the temperature to 90° C., perform aging for 3 hours, wash and dry to obtain macroporous resin microspheres S2.

Embodiment 3

[0057] (1) Step S1: preparing an aqueous phase solution containing 0.5% by weight of methylene blue and 4% by weight of potassium chloride;

[0058] Step S2: Add 100g of water to a three-necked flask equipped with a stirrer, a condenser, and an air guide tube, and take 3.0g, 4.0g of vinyl acetate, dimethylaminoethyl methacrylate, glyceryl trimethacrylate, and toluene , 2.0g, 1.5g, after mixing completely, add to water, add 3.0g toluene solution containing 0.03g dibenzoyl peroxide to obtain oil phase mixture;

[0059] (2) Mix the oil phase mixture and the water phase solution evenly at a stirring speed of 500rpm, the mass ratio of the two is 1:10 when mixing, pass nitrogen gas to remove the air for 30min, and react for 6 hours at a temperature of 73°C, and then Adjust the temperature to 90° C., perform aging for 2.5 hours, wash and dry to obtain macroporous resin microspheres S3.

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Abstract

The invention discloses a macroporous resin microsphere, a preparation method and application thereof. The preparation method comprises the following steps: (1) Step S1: preparing an aqueous phase solution of an inorganic salt that does not contain dissolved oxygen; Step S2: mixing the supporting monomer A with the polymerizable monomer B, a crosslinking agent and a porogen homogeneously, then mix homogeneously with water and toluene solution containing initiator to obtain an oil phase mixture; the polymerized monomer B is dialkylaminoethyl acrylate and / or dialkylaminoethyl methacrylate; step S1 The order of step S2 is not limited; in step S1, the inorganic salt is an inorganic salt that can reduce the solubility of the supporting monomer A and the polymerizable monomer B in the water phase; (2) the oil The phase mixture is uniformly mixed with the aqueous phase solution, a polymerization reaction occurs, the temperature is raised, matured, the product is washed, and dried. The preparation process of the present invention is simple, and the obtained macroporous resin microspheres have better adsorption-desorption performance on tungstate.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a macroporous resin microsphere and its preparation method and application. Background technique [0002] The currently used adsorption resins are mainly polystyrene series and polyacrylic acid series. For polyaddition resins, the preparation methods are generally suspension polymerization and post-crosslinking polymerization. In addition to these two synthesis methods, there are bulk Polymerization, solution polymerization and emulsion polymerization are currently less used polymerization methods. Bulk polymerization forms blocky substances, solution polymerization can prepare water-absorbent resins, and emulsion polymerization is rarely reported as resins. The reason is that it is generally difficult to carry out phase separation in emulsion polymerization, and the products after emulsion polymerization are often used directly without separation in industry. In addition, there is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/34C08F212/08C08F212/36C08F220/14C08F222/14C08F218/08C08F220/32C08F8/44C08J9/28B01D15/08
Inventor 罗时忠胡景钰
Owner ANHUI NORMAL UNIV
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