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Microcapsule, microencapsulated scale and/or fiber and preparation method and application thereof

A technology of microcapsules and flakes, applied in coatings, epoxy resin coatings, etc., can solve the problems of less performance improvement of composite materials, change of mechanical properties, poor controllability, etc., to avoid coating defects and improve coating density anti-sticking and aggregation-avoiding effects

Active Publication Date: 2021-07-09
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Researchers further improve the surface bonding between fibers or scales and resins, change the mechanical properties of reinforced composites, improve interface adhesion, improve interface strength, and surface compatibility through coating methods, oxidation methods, and high-energy radiation methods. properties, etc., but these methods have some defects, such as complex process, poor controllability, less improvement to the performance of composite materials, etc.

Method used

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  • Microcapsule, microencapsulated scale and/or fiber and preparation method and application thereof
  • Microcapsule, microencapsulated scale and/or fiber and preparation method and application thereof

Examples

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preparation example Construction

[0028] One aspect of the embodiments of the present invention provides a method for preparing microcapsules, comprising:

[0029] providing a first emulsion comprising a functional material, a self-curing resin monomer, an emulsifier and a solvent, wherein the emulsified droplet diameter of the first emulsion is 0.1-5.0 μm;

[0030] mixing the first emulsion with polymer monomers and an acid to form a first mixture;

[0031] mixing the first mixture with an oxidizing agent and reacting at 10-40°C for 4-10 hours to obtain a second mixture;

[0032] And, mixing the second emulsion containing functional materials, self-curing resin monomers, emulsifiers and solvents with the second mixture and reacting at 10-40°C for 4-10 hours to obtain microcapsules, wherein the second emulsion The emulsified droplet diameter is 5.0-15μm.

[0033] In some more specific embodiments, the preparation method includes:

[0034] The functional material is mixed with the self-curing resin monomer t...

Embodiment 1

[0106] (1) The polyphenylene sulfide fiber with a length of 10 mm and a fineness of 50 μm is treated with plasma first, and then the polyphenylene sulfide fiber is soaked in an ethanol solution containing 10 wt % coupling agent KH590, and the temperature is kept at 50 ° C , reflux and stir for 40min, then cool, filter, wash and dry to obtain A;

[0107] (2) Add the mixture of 3wt% mercaptobenzothiazole and hydroxymethylated bisphenol A diglycidyl ether successively to water (wherein the mass of mercaptobenzothiazole and hydroxymethylated bisphenol A diglycidyl ether ratio of 1:1) and 0.5wt% of span80 and tween60 (the mass of span80 and tween60 is 5:1), ultrasonically disperse first, and then stir at high speed to control the emulsified droplet diameter to 0.1μm, and the dispersion is uniform After standing still, B is obtained;

[0108] (3) Add the mixture of 6wt% mercaptobenzothiazole and hydroxymethylated bisphenol A diglycidyl ether successively to water (wherein the ratio...

Embodiment 2

[0117] (1) The ceramic fiber with a length of 5 mm and a fineness of 10 μm is first treated with plasma surface, and then the ceramic fiber is soaked in an ethanol solution containing 30 wt% coupling agent KH580, and the temperature is kept at 80 ° C, refluxed and stirred for 20 minutes and then cooled , filtered, washed and dried to obtain A;

[0118] (2) Add 6wt% of pyridine quaternary ammonium salt and N, N'-two-(p-hydroxybenzyl)-ethylenediamine diglycidyl ether mixture (wherein pyridine quaternary ammonium salt and N, N'- Two-(p-hydroxybenzyl)-ethylenediamine diglycidyl ether has a mass ratio of 3:1) and a compound formed by 2wt% span80 and tween65 (the mass ratio of span80 and tween65 is 1:1), and ultrasonic Disperse, then stir at a high speed, control the diameter of the emulsified droplet to 5 μm, disperse evenly and let stand to obtain B;

[0119] (3) Add 10wt% pyridinium quaternary ammonium salt and N, N'-di-(p-hydroxybenzyl)-ethylenediamine diglycidyl ether mixture ...

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Abstract

The invention discloses a microcapsule, a microencapsulated scale and / or fiber and a preparation method and application thereof The preparation method of the microcapsule comprises the following steps: mixing a first emulsion containing a functional material, a self-curing resin monomer, an emulsifier and a solvent with a polymer monomer and an acid to form a first mixture; mixing and reacting the first mixture with an oxidizing agent to obtain a second mixture; and mixing a second emulsion containing a functional material, a self-curing resin monomer, an emulsifier and a solvent with the second mixture, and reacting to obtain the microcapsule. According to the microencapsulated scale and / or fiber prepared by the preparation method, the fibers or the scales can form a zigzag meshing structure in a coating by utilizing a staggered arrangement structure so that the impact resistance and the compactness of the coating are greatly improved; meanwhile, the prepared microencapsulated scale and / or fiber is used as a functional filler and is suitable for a self-repairing anti-corrosion or anti-fouling coating in an impact environment.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, and in particular relates to a microcapsule, a microencapsulated scale and / or fiber, a preparation method and application thereof. Background technique [0002] In recent years, organic / inorganic fiber or flake materials have been widely concerned by many domestic and foreign experts, scholars and researchers in the field of engineering technology due to their own characteristics of heat resistance, high tensile strength and impact strength, as well as their low price. Especially in the field of reinforced composite materials used in the field of engineering technology, a good reinforcement effect has been achieved. [0003] Fiber or flake materials are widely used as functional fillers, and adding different types of fibers or flakes can improve the functionality of the coating in different ways. Adding nylon fibers to the coating can significantly enhance the wet strength of the coati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/65C09D7/62C09D163/00
CPCC09D7/65C09D7/62C09D7/70C09D163/00C08L81/02C08K7/04C08K7/26C08K7/00
Inventor 张昕王立平卢光明毛飞雄
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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