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A kind of preparation method of hydrophobic lipophilic polymer composite microsphere

A polymer microsphere, hydrophobic and lipophilic technology, which is applied in the field of preparation of hydrophobic and lipophilic polymer composite microspheres, can solve the problems of microsphere agglomeration interface binding degree, difficulty in the industrial scale use of microsphere products, and poor dispersion. The process is simple, the application prospect is good, and the technical effect is obvious

Active Publication Date: 2020-02-07
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the above-mentioned problems existing in the existing thermosetting microsphere technology, to provide a method for preparing surface hydrophobic and lipophilic polymer composite microspheres, to change the hydrophilic and non-lipophilic properties of thermosetting polymer microspheres, and to improve microspheres. The compatibility between the ball and the substrate solves the problem of poor dispersion of existing thermosetting polymer microspheres in non-polar substrates, microsphere agglomeration and poor interfacial bonding, and difficulty in realizing the industrial scale use of microsphere products, etc. question

Method used

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  • A kind of preparation method of hydrophobic lipophilic polymer composite microsphere
  • A kind of preparation method of hydrophobic lipophilic polymer composite microsphere
  • A kind of preparation method of hydrophobic lipophilic polymer composite microsphere

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) Weigh 5.4g of fresh wet melamine resin thermosetting polymer microspheres (60% solid content) prepared by dispersion polymerization as cue balls, add 100mL water and ultrasonically disperse for 60 minutes to obtain uniformly dispersed microspheres mixture.

[0027] (2) Prepare 300mL of water / ethanol (mass ratio: 1:1) solution, add 0.0540g of dodecanoic acid to form a modified solvent;

[0028] (3) Add the uniformly dispersed microsphere mixture in step (1) to the modified solvent prepared in step (2), stir well to disperse evenly, heat up to 70 degrees Celsius, react for 60 minutes, settle and separate, and dry the obtained surface Hydrophobic and lipophilic melamine resin polymer composite microspheres.

Embodiment 2

[0030] (1) Weigh 5.4 g of fresh wet phenolic thermosetting polymer microspheres (50% solid content) prepared by dispersion polymerization as cue balls, add 150 mL of water and ultrasonically disperse for 30 minutes to obtain a uniformly dispersed microsphere mixture.

[0031] (2) Prepare 300mL of water / ethanol (mass ratio: 1:1) solution, add 0.1620g of dodecanoic acid to form a modified solvent;

[0032] (3) Add the uniformly dispersed microsphere mixture in step (1) to the modified solvent prepared in step (2), stir well to disperse evenly, heat up to 80 degrees Celsius, react for 60 minutes, settle and separate, and dry the obtained surface Hydrophobic and lipophilic phenolic polymer composite microspheres.

Embodiment 3

[0034] (1) Weigh 1.5g of fresh wet urea-formaldehyde thermosetting polymer microspheres (60% solid content) prepared by dispersion polymerization and 3.0g of fresh wet phenolic resin thermosetting polymers prepared by dispersion polymerization Microspheres (50% solid content) are cue balls, and 120 mL of water is added for ultrasonic dispersion for 45 minutes to obtain a uniformly dispersed microsphere mixture.

[0035] (2) Prepare 400mL of water / ethanol (mass ratio: 1:1) solution, add 0.1620g of myristic acid to form a modified solvent;

[0036] (3) Add the uniformly dispersed microsphere mixture in step (1) to the modified solvent prepared in step (2), stir well to disperse evenly, heat up to 60 degrees Celsius, react for 30 minutes, settle and separate, and dry the obtained surface Hydrophobic and lipophilic urea-formaldehyde polymer composite microspheres.

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Abstract

The invention provides a preparation method of hydrophobic lipophilic composite microspheres. According to the method, wet thermosetting high-molecular microspheres obtained through a dispersion polymerization method are taken as mother spheres, the surface structure of the thermosetting microspheres is functionally modified with long-chain fatty acid to obtain high-molecular composite microspheres with the hydrophobic lipophilic surface. The method solves the problem that microspheres cannot be well dispersed in a nonpolar solution and an organic polymer solution. The activation index of thermosetting high-molecular microspheres can be greatly increased, the surface lipophilicity is enhanced, compatibility of the microspheres and other resins is improved, the performance problem due to agglomeration of microspheres in an application process of a material which is made from the microspheres is prevented, and the high application temperature of the material is ensured. The preparation method is simple, is easy to industrialize, and can be widely applied to fields of functional materials and composite materials, such as, magnetic separation, artificial meta-materials, electromagnetic shielding, and anisotropic conductive adhesives.

Description

technical field [0001] The invention belongs to the field of polymer microspheres, and in particular relates to a method for preparing hydrophobic and lipophilic polymer composite microspheres. Background technique [0002] The particle size of polymer microspheres is generally 100 nanometers to tens of microns, which can be used in coatings, paper surface coatings, cosmetics and other fields. After functionalizing these microspheres, they can be used for drug sustained release microcapsules, protein separation chromatography, high-throughput Disease screening and drug screening, magnetic separation, artificial metamaterials, electromagnetic shielding, anisotropic conductive adhesives and other fields. [0003] Among the common polymer microsphere materials, melamine resin, phenolic resin, urea-formaldehyde resin, etc. are thermosetting materials. In comparison, they have the advantages of high service temperature, excellent mechanical properties, simple and efficient prepar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/02
CPCB01J13/02
Inventor 黄玉安杨雅珂王妍李友伟曹沈炀陈汝健范伟康韩冰赵世军翟东力
Owner NANJING INST OF TECH
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