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Preparation method of magnetic polystyrene microsphere rich in double bonds on surface

A technology of polystyrene microspheres and magnetism, which is applied in the preparation of microspheres, the magnetism of organic materials/organic magnetic materials, microcapsule preparations, etc., and can solve the problems of structural instability, low magnetic response of magnetic polystyrene microspheres, Problems such as the combination of nanoparticles and the internal polymer layer are not too tight, so as to achieve the effects of stable structure, enhanced use range, and uniform size

Active Publication Date: 2020-03-31
湖北新纵科病毒疾病工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the nanoparticles in the microspheres prepared by the above method are not very tightly combined with the internal polymer layer, resulting in low magnetic response and unstable structure of the prepared magnetic polystyrene microspheres containing double bonds on the surface.

Method used

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  • Preparation method of magnetic polystyrene microsphere rich in double bonds on surface
  • Preparation method of magnetic polystyrene microsphere rich in double bonds on surface
  • Preparation method of magnetic polystyrene microsphere rich in double bonds on surface

Examples

Experimental program
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Effect test

Embodiment 1

[0034] 1. Preparation of size-adjustable and uniform polystyrene microspheres by dispersion polymerization:

[0035]Prepare dehydrated alcohol and ultrapure water mixed solution A (wherein the volume fraction of ultrapure water is 5%); Add stabilizer in above-mentioned mixed solution A and stir until fully dissolving (300rpm) (stabilizer is polyvinylpyrrolidone, hydroxypropyl One or both of base cellulose; the addition of stabilizer is 10% of the mixed solution); to which styrene solution B (styrene solution is a styrene solution containing an initiator, wherein the initiator is azobisiso One or two of butyronitrile, azobisisoheptanonitrile, potassium persulfate, benzoyl peroxide, ammonium persulfate, the mass fraction of the initiator is 5% of styrene; styrene solution B and mixed solution The mass ratio of A is 50%); react at 50°C for 30min (300rpm), heat up to 75°C for 9h, and obtain 5um polystyrene microspheres.

[0036] 2. Preparation of magnetic ferric oxide particles: ...

Embodiment 2

[0041] 1. Preparation of size-adjustable and uniform polystyrene microspheres by dispersion polymerization:

[0042] Prepare absolute ethanol and ultrapure water mixed solution A (wherein the volume fraction of ultrapure water is 1%); Add stabilizer in above-mentioned mixed solution A and stir until fully dissolving (100rpm) (stabilizer is polyvinylpyrrolidone, hydroxypropyl One or both of base cellulose; the addition of stabilizer is 1% of the mixed solution); to which styrene solution B (styrene solution is a styrene solution containing an initiator, wherein the initiator is azobisiso One or two of butyronitrile, azobisisoheptanonitrile, potassium persulfate, benzoyl peroxide, ammonium persulfate, the mass fraction of the initiator is 0.1% of styrene; styrene solution B and mixed solution The mass ratio of A is 10%); react at 50°C for 30min (100rpm), heat up to 75°C for 6h, and obtain 0.5um polystyrene microspheres.

[0043] 2. Preparation of magnetic iron ferric oxide part...

Embodiment 3

[0048] 1. Preparation of size-adjustable and uniform polystyrene microspheres by dispersion polymerization:

[0049] Preparation of dehydrated alcohol and ultrapure water mixed solution A (wherein the volume fraction of ultrapure water is 10%); Add stabilizer in above-mentioned mixed solution A and stir until completely dissolving (500rpm) (stabilizer is polyvinylpyrrolidone, hydroxypropyl One or both of base cellulose; the addition of stabilizer is 20% of the mixed solution); to which styrene solution B (styrene solution is a styrene solution containing an initiator, wherein the initiator is azobisiso One or two of butyronitrile, azobisisoheptanonitrile, potassium persulfate, benzoyl peroxide, ammonium persulfate, the mass fraction of the initiator is 10% of styrene; styrene solution B and mixed solution The mass ratio of A is 100%); react at 50°C for 30min (500rpm), heat up to 75°C for 12h, and obtain 10um polystyrene microspheres.

[0050] 2. Preparation of magnetic iron f...

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Abstract

The invention discloses a preparation method of magnetic polystyrene microsphere rich in double bonds on surface, which includes: (1) preparing magnetic nano-particles containing double bonds; (2) adding polystyrene microspheres and the magnetic nano-particles containing double bonds to a dispersion liquid to obtain a mixed solution, adding (2-(methylacryloyloxy)ethyl)trimethyl ammonium chloride,heating the solution to 70-90 DEG C to perform a heat preservation reaction, cooling the reaction product to 40-60 DEG C, adding alkaline liquid and a silane coupling agent containing double bonds toperform a heat preservation reaction until the reaction is completed, and washing the reaction product to obtain the magnetic polystyrene microspheres rich in double bonds, of which the surface is magnetic nano-particles modified by double bonds, the interlayer is the MTC polymer and the interior is a polymer layer. The MTC polymer contains double bonds and can be copolymerized with the magnetic nano-particles modified by double bonds, so that the nano-particles are strongly combined with the polymer layer; the microsphere ensures strong magnetization and is more stable in structure.

Description

technical field [0001] The invention relates to the technical field of preparation of organic-inorganic composite materials, in particular to a method for preparing magnetic polystyrene microspheres whose surfaces are rich in double bonds. Background technique [0002] With the continuous development of science and technology, the requirements of all walks of life for various new materials are also increasing. Traditional single-performance materials are difficult to meet the requirements of use. Composite materials, especially organic-inorganic composite materials, can simultaneously have the characteristics of many types of organic polymer materials, low density, high specific strength, electrical insulation, good corrosion resistance, and easy modification, as well as high melting point, high strength, and wear resistance of inorganic materials. , high hardness, corrosion resistance and oxidation resistance and other unique properties. However, in the actual preparation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/14C08F292/00C08F257/02C08F220/34C08F230/08H01F1/42H01F41/02
CPCB01J13/14C08F292/00C08F257/02H01F1/42H01F41/02C08F220/34
Inventor 王华林张涛张科登刘二涛韩迪
Owner 湖北新纵科病毒疾病工程技术有限公司
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