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Magnetic expansion adsorption composite material and preparation method thereof

A composite material and magnetic technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of adjusting the magnetic strength of difficult hydrogels, the adsorption capacity of adsorption groups is not large, and the preparation operation is complicated, etc., achieving low cost , Simple manufacturing method, high gel strength effect

Inactive Publication Date: 2012-07-18
CUG WUHAN GOLDEN SHIELD ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, this method is to prepare magnetic particles by chemical reaction after adsorbing iron ions, rather than magnetic hydrogels, and there are limitations in that the adsorption groups in the molecule are saturated with iron and the adsorption amount is not large, so it is difficult to make hydrogels with strong magnetic properties. Weak to large adjustment, preparation operation is complex, conditions are difficult to control, and its application for enrichment and separation of metal ions is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] In a 1000ml beaker, add 50g each of AMPS and AM, add water to make an aqueous solution of water-soluble ethylenically unsaturated monomers with a concentration of 40% by mass, add N,N'-methylenebisacrylamide (cross- Joint agent) 0.1g, potassium persulfate 0.05g, stir to dissolve, then add 1.0g of diatomite powder with average particle size of 10.0μm, grade greater than TFe50% and 1.0g of diatomite with average particle size of 20.0μm, 75℃ Stir and disperse for 5 minutes; the above-mentioned dispersed mixture is cooled to 10°C for 3 hours and then raised to 80°C for 1 hour to obtain a gel (colloidal polymer product); the resulting gel is chopped to 2-10mm , dried under vacuum at 40°C for 5 hours until the water content is less than 10wt%, and then mechanically pulverized to 0.1-5.0mm to finally obtain the finished product of granular magnetic expansion adsorption composite material, whose expansion degree is 80-90 ), Cu(Ⅱ), Cr(Ⅲ), the adsorption amount is 20-400mg / g dry ...

Embodiment 2

[0057] In a 1000ml beaker, add 10g AMPS and 20g AM, add water to prepare an aqueous solution of water-soluble ethylenically unsaturated monomers with a concentration of 20% by mass, and add 2.0g of N,N'-methylenebisacrylamide under stirring , Potassium persulfate 1.0g, sodium bisulfite 1.0g, stir to dissolve, then add 50g of magnetite powder with an average particle size of 100.0μm and a grade greater than TFe20% and 30.0g of bentonite with an average particle size of 10.0μm, and stir at 70°C Disperse for 15 minutes; cool down the dispersed mixture to 50°C for 3 hours, then raise it to 70°C for 3 hours to obtain a gel (colloidal polymer product); the resulting gel is chopped to 2-10mm, Vacuum dry at 80°C for 3 hours until the water content is less than 10wt%, and then mechanically pulverize to 0.1-5.0mm to finally obtain the finished product of granular magnetic expansion adsorption composite material. Ⅱ), the adsorption amount of Pb(Ⅱ) is 20-400mg / g dry resin, which shows tha...

Embodiment 3

[0059] In a 1000ml beaker, add 20g AMPS, 60g AM and 20g AA, add water to prepare an aqueous solution of water-soluble ethylenically unsaturated monomers with a concentration of 15% by mass, and add N,N'-methylenebispropene under stirring Add 1.0 g of amide and 10.0 g of sodium persulfate, stir and dissolve, then add 30.0 g of magnetite powder with an average particle size of 80.0 μm and a grade greater than TFe30% and 15 g of attapulgite with an average particle size of 2.0 μm, and ultrasonically treat at 70 ° C for 15 Minutes, lowered to room temperature and passed through a colloid mill to disperse the powder; the above-mentioned dispersed mixture was heated to 50°C for 3 hours and then raised to 90°C for 5 hours to obtain a gel (colloidal polymerization product); the generated The gel is chopped to 2-10mm, dried at 70°C for 4 hours until the water content is less than 10wt%, and then mechanically crushed to 0.1-5.0mm to finally obtain a granular magnetic expansion adsorption...

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Abstract

The invention provides a magnetic expansion adsorption composite material and a preparation method thereof. The composite material comprises the following components in parts by weight: more than 0 and less than or equal to 50 parts of magnetic powder, 1.0-30.0 parts of a non-metallic mineral powder body, 50.0-100.0 parts of water solubility Ethylene class unsaturated monomer and 0.1-2.0 parts of cross-linking agent, and is prepared by compounding the components through a polymerization reaction. According to the invention, the obtained magnetic expansion absorption composite material has a function of adsorbing and enriching heavy metal ions of metallic ions in a water body or soil or a stereo-liquid suspension (compound) system; meanwhile, the magnetic expansion absorption composite material has the characteristic of being easy to extract through a magnet or a magnetic separation machine, the manufacturing method is simple, the cost is low, the dilation is high, and the magnetic expansion absorption composite material is broadly used for a fluid bed or cleaning plant to carry out metallic ion segregation, and provides a good adsorbing material for sublimate automatization and large-scale production; and the magnetic expansion adsorption composite material and the preparation method are suitable for adsorption, enrichment and isolation application in industries such as environmental protection, pollution administration, biology segregation and mineral separation.

Description

technical field [0001] The invention belongs to the technical field of functional polymer materials and functional composite materials, and in particular relates to a magnetic expansion adsorption composite material and a preparation method thereof. Background technique [0002] Both the adsorption resin and the swelling resin are functional polymer materials. The development in recent years proves that hydrogel swelling materials have selective strong adsorption capacity and large adsorption capacity for metal ions such as heavy metal ions. Therefore, hydrogel swelling materials have become swelling adsorption materials. Chinese patent application Nos. 201010284643 and 200710072462 patent applications disclose methods for preparing iron ferric oxide nanoparticles using hydrogel as a template and Fe(III) and Fe(II) as raw materials. Obviously, this method is to prepare magnetic particles by chemical reaction after adsorbing iron ions, rather than magnetic hydrogels, and the...

Claims

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Application Information

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IPC IPC(8): C08L33/24C08L33/26C08L33/02C08F220/58C08F220/56C08F220/06C08F2/48C08K3/34C08K3/08B01J20/26B01J20/30
Inventor 范力仁
Owner CUG WUHAN GOLDEN SHIELD ENVIRONMENTAL TECH CO LTD
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