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Preparation method of magnetic self-healing microcapsules

A technology of water-soluble resin and conductive coating, applied in the field of preparation of magnetic self-healing microcapsules, can solve the problems of inability to rapidly cure the coating film structure, slow self-healing process, etc., achieve fast and effective self-healing, improve compatibility, Improve the effectiveness of the self-healing process

Inactive Publication Date: 2017-10-10
常州蓝森环保设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a preparation method of magnetic self-healing microcapsules in view of the slow self-healing process of the current self-healing microcapsule materials, which cannot be rapidly solidified to form a coating film structure

Method used

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  • Preparation method of magnetic self-healing microcapsules

Examples

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example 1

[0018] Take Fe 3 o 4 Particles, ball milled and passed through a 200-mesh sieve to obtain Fe 3 o 4 Powder and add it to absolute ethanol at a mass ratio of 1:10, stir and mix, and place it under the condition of 25°C and 35KHz for 1 hour of ultrasonic vibration treatment to obtain a mixed dispersion, and then place the mixed dispersion in a three-necked flask, Ventilate nitrogen to exclude air, add γ-(2,3-epoxypropoxy)propyltrimethoxysilane with 1% mass fraction of mixed dispersion liquid to the three-necked flask under nitrogen atmosphere, stir and mix with 10% mass fraction of acetic acid solution Adjust the pH to 6.5, and incubate at 35°C for 3 hours. After the insulated reaction is completed, filter and collect the filter cake after standing for 6 hours, wash with absolute ethanol for 3 times, and dry at 45°C for 6 hours to prepare a modified magnetic Particles; in parts by weight, respectively weigh 45 parts of xylene, 10 parts of E-51 epoxy resin, 5 parts of modified ...

example 2

[0020] Take Fe 3 o 4 Particles, ball milled and passed through a 200-mesh sieve to obtain Fe 3 o 4 Powder and add it to absolute ethanol at a mass ratio of 1:10, stir and mix and place it under the conditions of 30°C and 40KHz for 2 hours of ultrasonic vibration treatment to obtain a mixed dispersion, and then place the mixed dispersion in a three-necked flask, Ventilate nitrogen to exclude air, add γ-(2,3-epoxypropoxy)propyltrimethoxysilane with 1% mass fraction of mixed dispersion liquid to the three-necked flask under nitrogen atmosphere, stir and mix with 10% mass fraction of acetic acid solution Adjust the pH to 6.5, and insulate and react at 45°C for 5 hours. After the heat preservation reaction is completed, filter and collect the filter cake after standing for 8 hours, wash with absolute ethanol for 5 times, and dry at 50°C for 8 hours to prepare a modified magnetic Particles; in parts by weight, respectively weigh 50 parts of xylene, 15 parts of E-51 epoxy resin, 1...

example 3

[0022] Take Fe3 o 4 Particles, ball milled and passed through a 200-mesh sieve to obtain Fe 3 o 4 Powder and add it to absolute ethanol at a mass ratio of 1:10, stir and mix, and place it under the condition of 27°C and 37KHz for 2 hours of ultrasonic vibration treatment to obtain a mixed dispersion, and then place the mixed dispersion in a three-necked flask, Ventilate nitrogen to exclude air, add γ-(2,3-epoxypropoxy)propyltrimethoxysilane with 1% mass fraction of mixed dispersion liquid to the three-necked flask under nitrogen atmosphere, stir and mix with 10% mass fraction of acetic acid solution Adjust the pH to 6.5, and incubate at 37°C for 4 hours. After the heat preservation reaction is completed, filter and collect the filter cake after standing for 7 hours, wash with absolute ethanol for 4 times, and dry at 47°C for 7 hours to prepare a modified magnetic Particles; in parts by weight, respectively weigh 47 parts of xylene, 12 parts of E-51 epoxy resin, 8 parts of mo...

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Abstract

The invention relates to a preparation method of magnetic self-healing microcapsules, and belongs to the technical field of microcapsule preparation. The preparation method comprises the steps as follows: firstly, a silane coupling agent is hydrolyzed, molecules of the silane coupling agent simultaneously contain a reactive group capable of being chemically bonded with an inorganic material and a reactive group capable of being chemically bonded with an organic material, silanol is generated by hydrolysis and is bonded with an inorganic substance to form siloxane, the ferroferric oxide nanometer magnetic nanoparticles are dispersed in water for hydroxylating the material surface and react with silanol generated from the silane coupling agent through hydrolysis. Compatibility between the materials is improved due to the firm bonding; the magnetic particles are loaded into a curing agent, magnetic curing agent particles are loaded into a wall material through in-situ emulsion polymerization, and a microcapsule material is formed; after rupture or mechanical damage, a magnetic curing agent material is agglomerated due to mutual attraction between the magnetic particles, so that the contact area between the material and the curing agent is effectively increased, the material curing rate is increased, the self-healing process of the material is effectively improved, and rapid and effective self-healing of the material is realized.

Description

technical field [0001] The invention relates to a method for preparing magnetic self-repairing microcapsules, which belongs to the technical field of microcapsule preparation. Background technique [0002] Since the 21st century, high-tech fields such as aerospace have gradually replaced traditional metal materials with thermosetting resin-based polymer materials to reduce the weight of equipment and improve its heat resistance, wear resistance and processing performance. However, under the influence of the external environment, the polymer molecular chains of these thermosetting resin-based polymer materials may break and produce microcracks from the inside of the material. If not handled in time, these microcracks will soon expand into macrocracks, destroying The overall structure of the material, shortening its service life. Therefore, it is of great research significance and practical value to realize the self-healing of microcracks in materials by endowing polymer mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02C09D163/00C09D133/00C09D175/04C09D5/24C09D7/12
CPCB01J13/02C08K2201/011C08L2205/035C09D5/24C09D133/00C09D163/00C09D175/04C08L33/00C08L75/04C08L39/06C08L71/02C08L1/284C08K7/24
Inventor 孙建忠季美
Owner 常州蓝森环保设备有限公司
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