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Magnetic amino-modified superhighly-crosslinked resin and preparation method thereof

An ultra-high cross-linked resin, amine-based technology, applied in chemical instruments and methods, ion exchange, anion exchange and other directions, can solve the problems of excessive micropores, complex synthesis process, difficulty in forming magnetic properties, etc., and achieves simple preparation steps, Good application prospects, avoid the effect of the activation process

Active Publication Date: 2015-03-18
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For existing magnetic ion exchange resins and magnetic ultra-high cross-linked adsorption resins, neutral and ionic pollutants cannot be removed at the same time, and the synthesis process of amine-modified ultra-high cross-linked resins is complicated, there are too many micropores, and it is difficult to form magnetism. , the present invention provides a magnetic amine-modified ultra-high cross-linked resin and a preparation method thereof. A relatively high proportion of divinylbenzene is post-cross-linked to obtain a resin with a high specific surface area and abundant channels, basically with larger mesopores as the Mainly, it greatly alleviates the pore blockage caused by the excessive micropores of the existing amine-modified ultra-high cross-linked resin

Method used

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  • Magnetic amino-modified superhighly-crosslinked resin and preparation method thereof
  • Magnetic amino-modified superhighly-crosslinked resin and preparation method thereof
  • Magnetic amino-modified superhighly-crosslinked resin and preparation method thereof

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Embodiment 1

[0038] The preparation method of the magnetic amine-modified ultra-high cross-linked resin of the present embodiment, the steps are:

[0039](a) Dissolve 5 g of gelatin in 500 g of deionized water to form an aqueous phase.

[0040] (b) An oil phase is provided, and the oil phase is composed of 25 g of divinylbenzene, 25 g of glycidyl methacrylate, 50 g of toluene, and 1 g of benzoyl peroxide.

[0041] (c) Add the water phase to the three-necked bottle, and the oil phase and 2.5g of Fe with a particle size of about 0.1 μm 3 o 4 The magnetic particles are mixed evenly and added to the three-neck bottle. Adjust the stirring speed of the agitator until the oil phase suspended in the water phase presents a suitable particle size. Gradually raise the temperature to 78°C for a constant temperature reaction for 2 hours. Stepwise heating up to 95°C for constant temperature reaction for 12 hours;

[0042] (d) After the obtained resin is cooled, it is washed and dried with deionized...

Embodiment 2

[0049] The preparation method of the magnetic amine-modified ultra-high cross-linked resin of the present embodiment, the steps are:

[0050] (a) Equipped with a water phase, dissolving 10g of gelatin in 500g of deionized water to form a water phase;

[0051] (b) Equipped with an oil phase, the oil phase is composed of 25g divinylbenzene, 25g glycidyl methacrylate, 100g toluene, and 1g benzoyl peroxide;

[0052] (c) Add the water phase to the three-necked bottle, and the oil phase and 5g of Fe with a particle size of about 0.2 μm 3 o 4 The magnetic particles are mixed evenly and added to the three-neck bottle. Adjust the stirring speed of the agitator until the oil phase suspended in the water phase presents a suitable particle size. Gradually raise the temperature to 75°C for a constant temperature reaction for 4 hours. Stepwise heating up to 90°C for constant temperature reaction for 8 hours;

[0053] (d) After the obtained resin is cooled, it is washed and dried with d...

Embodiment 3

[0060] The preparation method of the magnetic amine-modified ultra-high cross-linked resin of the present embodiment, the steps are:

[0061] (a) Equipped with a water phase, dissolving 5g of polyvinyl alcohol in 500g of deionized water to form a water phase;

[0062] (b) Equipped with an oil phase, the oil phase is composed of 35g divinylbenzene, 15g glycidyl methacrylate, 100g n-heptane, and 1g benzoyl peroxide;

[0063] (c) Add the water phase to the three-neck flask, and the oil phase and 8 g of γ-Fe with a particle size of about 0.1 μm 2 o 3 The magnetic particles are mixed evenly and added to the three-neck bottle. Adjust the stirring speed of the agitator until the oil phase suspended in the water phase presents a suitable particle size. Gradually raise the temperature to 80°C for 6 hours at a constant temperature. Stepwise heating up to 95°C for constant temperature reaction for 8 hours;

[0064] (d) After the obtained resin is cooled, it is washed and dried with ...

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Abstract

The invention discloses a magnetic amino-modified superhighly-crosslinked resin and a preparation method thereof, belonging to the field of magnetic resins. The invention relates to a magnetic amino-modified superhighly-crosslinked resin, of which the framework is composed of divinylbenzene and glycidyl methacrylate. The basic structural formula of the resin is disclosed in the specification, wherein the group A in the molecular formula is disclosed in the specification. According to the resin and method disclosed by the invention, a high proportion of divinylbenzene is subjected to post-crosslinking to obtain the resin with high surface area and abundant pores which mainly comprising larger mesopores, thereby greatly relieving the phenomenon of pore blockage due to too many micropores in the existing amino-modified superhighly-crosslinked resin.

Description

technical field [0001] The invention belongs to the field of magnetic resins, and more specifically discloses an amine-modified ultra-high cross-linked resin containing magnetic particles inside and a preparation method thereof. Background technique [0002] In recent years, resin adsorbents have been widely used in the field of water treatment because of their high adsorption capacity and strong regeneration ability. The magnetic ion exchange resin MIEX developed by Australia’s Orica company has the advantages of fast adsorption rate, high adsorption capacity, easy separation, and simple operation, which makes it break the bottleneck of small water treatment and high energy consumption in the fixed bed process used by traditional non-magnetic resins. , has been widely used. At present, domestic scholars have also developed ion-exchange magnetic resin materials accordingly, such as the magnetic anion exchange materials disclosed in patent publication numbers CN101708475A, C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/32C08F212/36C08F2/44C08F2/20C08F8/32C08F8/44C08K9/10C08K3/22C08J9/14C08J3/24B01J20/26B01J20/28B01J41/12B01J41/14
Inventor 周庆王梦乔李爱民双陈冬张满成江野立李文涛徐子潇刘笑寒吴柳彦
Owner NANJING UNIV