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Preparation method of superhydrophobic and superoleophobic magnetic composite microspheres

A technology of magnetic composite microspheres, superhydrophobicity and superoleophobicity, which is applied in the direction of magnetism of organic materials/organic magnetic materials, to achieve broad application prospects and the effect of reducing costs

Inactive Publication Date: 2019-05-03
SUZHOU ZEMAN BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Since super-oleophobicity has high requirements on the surface structure of materials, it is necessary to have a rough secondary and above structure to form the necessary air layer between the material and the liquid to achieve the super-oleophobic effect. Therefore, the current research results at home and abroad There are few reports on superhydrophobic and superoleophobic magnetic composite microspheres

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] The preparation method of superhydrophobic superoleophobic magnetic composite microsphere of the present invention, its preparation method comprises the following steps:

[0016] Step (1): Add vinyl and acrylic monomers as polymer monomers and cross-linking agents into a three-necked flask filled with 100 mL of deionized water, blow nitrogen gas for 30 minutes, then raise the temperature to 60-85 °C, and use peristaltic The pump drops the pre-prepared vinyl silane modifier modified monodisperse Fe 3 o 4 Nanoparticles, forming magnetic polymer microspheres with surface secondary structures;

[0017] Step (2): The two-structure magnetic polymer microspheres obtained in step (1) are modified with fluorine-containing silane to obtain superhydrophobic and superoleophobic magnetic polymer microspheres.

[0018] Wherein, the vinylic monomers and acrylic monomers are styrene, methylstyrene, aromatic styrene compounds, acrylic acid, unsaturated carboxylic acid acrylic acid, ac...

Embodiment 1

[0021] (1) Add 50g of styrene, 5g of methacrylic acid and 30g of divinylbenzene into a three-necked flask filled with 500mL of deionized water, pass nitrogen gas for 30min, then raise the temperature to 80°C, add 1g of KPS initiator, and when the three-necked flask When the inner solution turns translucent and milky white, use a peristaltic pump to drop the pre-prepared vinyl silane-modified monodisperse Fe 3 o 4 Nanoparticles, the dropping rate is 1s / drop, react at a constant temperature of 80°C for 7h, centrifuge, wash three times with water, wash three times with alcohol, dissolve in ethanol with a solid content of 10%, and set aside.

[0022] (2) Take 20mL of the magnetic polymer microspheres obtained in step (1), add them to a 250mL three-necked flask filled with 100ml of absolute ethanol, then add 500μL of heptadecafluorodecyltriethoxysilane, and add ammonia water dropwise, Adjust the pH to 10, raise the temperature to 50°C, keep the temperature at 50°C for 5 hours, tak...

Embodiment 2

[0024] (1) Add 50g of styrene, 5g of acrylic acid and 30g of divinylbenzene into a three-necked flask filled with 500mL of deionized water, pass nitrogen gas for 30min, then raise the temperature to 80°C, add 1g of APS initiator, and when the solution in the three-necked flask When it becomes translucent and milky white, use a peristaltic pump to drop the pre-prepared vinyl silane-modified monodisperse Fe 3 o 4 Nanoparticles, the dropping rate is 1s / drop, react at a constant temperature of 80°C for 7h, centrifuge, wash three times with water, wash three times with alcohol, dissolve in ethanol with a solid content of 10%, and set aside.

[0025] (2) Take 20mL of the magnetic polymer microspheres obtained in step (1), add them to a 250mL three-necked flask filled with 100ml of absolute ethanol, then add 500μL of heptadecafluorodecyltriethoxysilane, and add ammonia water dropwise, Adjust the pH to 10, raise the temperature to 50°C, keep the temperature at 50°C for 5 hours, take ...

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Abstract

The invention provides a preparation method of superhydrophobic and superoleophobic magnetic composite microspheres. The preparation method comprises the following steps: adding a cross-linking agentand an initiator to ethylene and acrylic monomers used as polymer monomers, dropwise adding monodisperse Fe3O4 nanoparticles modified with a modifier, carrying out heterophase polymerization to form magnetic polymer microspheres with a surface secondary structure, and then modifying the magnetic polymer microspheres with fluorine-containing silane to obtain the superhydrophobic and superoleophobicmagnetic polymer microspheres.

Description

technical field [0001] The invention belongs to the technical field of soap-free emulsion polymerization, and relates to a preparation method of superhydrophobic and superoleophobic magnetic composite microspheres. Background technique [0002] Since super-oleophobicity has high requirements on the surface structure of materials, it is necessary to have a rough secondary and above structure to form the necessary air layer between the material and the liquid to achieve the super-oleophobic effect. Therefore, the current research results at home and abroad There are few reports on superhydrophobic and superoleophobic magnetic composite microspheres. Contents of the invention [0003] In view of this, the purpose of the present invention is to make up for the gaps in domestic and foreign technologies, and to provide a preparation method of superhydrophobic superoleophobic magnetic composite microspheres. [0004] The technical scheme adopted by the present invention to solve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F212/08C08F8/42H01F1/42
Inventor 黄长水程希彤
Owner SUZHOU ZEMAN BIOTECH CO LTD
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