Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of antibacterial self-healing microcapsule and its preparation method and application in coating

A self-healing microcapsule and self-healing technology, which is applied in the direction of microcapsule preparation, microsphere preparation, antifouling/underwater coating, etc., can solve the problems of poor product storage, poor compatibility, and microcapsule agglomeration, and achieve improved storage High stability, reduced agglomeration, and high stability

Active Publication Date: 2022-07-19
三棵树(上海)新材料研究有限公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when used in coatings, the compatibility between the inorganic silica shell and the main film-forming substances is poor, which may easily cause the aggregation of microcapsules, resulting in poor product storage.
At the same time, the prepared microcapsules have a single function and cannot achieve the composite performance of antibacterial and self-repairing.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of antibacterial self-healing microcapsule and its preparation method and application in coating
  • A kind of antibacterial self-healing microcapsule and its preparation method and application in coating
  • A kind of antibacterial self-healing microcapsule and its preparation method and application in coating

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] The present invention also provides the preparation method of the above-mentioned antibacterial self-healing microcapsules, which comprises the following steps:

[0037] S1 adds the self-healing substance to the emulsifier to obtain a mixture;

[0038] S2 adds the silicon source material to the obtained mixture after hydrolysis with acid conditions, to form inorganic microcapsules with inorganic shell layers covering the self-healing material;

[0039] S3 emulsion-polymerizes the obtained inorganic microcapsules with acrylic monomers to obtain the antibacterial self-healing microcapsules.

[0040] like figure 1 As shown in the present invention, after the self-healing substance is emulsified by an emulsifier in advance, the emulsifier coats the self-healing substance; The emulsifier covered with the self-healing substance undergoes interfacial condensation to form a silica inorganic shell layer; at this time, the silica shell layer contains vinyl active groups, and th...

Embodiment 1

[0048] Preparation of antibacterial self-healing microcapsules:

[0049] Emulsifying mixing of S1 self-healing substances

[0050]Under mechanical dispersion at 1500rpm, add 4g of PF80S (nonionic emulsifier) ​​to 100g of water to form a homogeneous solution; continue to stir at a rotational speed of 3000rpm, add 100g of a mixture of epoxy resin E51 and cationic photoinitiator WPI113 (wherein the initiator and The resin ratio is 1:20), and the mixture is dispersed at high speed for half an hour to form a uniform emulsified mixture.

[0051] S2 silicon source pre-hydrolyzate

[0052] Take 20g of ethyl orthosilicate and 10g of vinyltrimethoxysilane and add it to 70g of water under stirring at 250rpm, slowly add dilute hydrochloric acid (mass concentration of 10%) to adjust the pH of the system to 2.0; continue to stir at 40°C for 30min to form a transparent The silicon source hydrolyzate.

[0053] S3 forms inorganic microcapsules

[0054] S31, under stirring at 250rpm, slowly...

Embodiment 2

[0062] The preparation method of antibacterial self-healing microcapsules, steps and parameters are the same as those in Example 1, the difference is: the epoxy resin in step S1 is replaced by E44, the photoinitiator is WPI113, and the weight ratio of initiator to resin is 1:5 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of antibacterial coatings, in particular to an antibacterial self-healing microcapsule, a preparation method thereof, and an application in coatings. The antibacterial self-healing microcapsule includes a composite shell layer and a self-healing substance coated in the composite shell layer; the composite shell layer includes a silica inorganic shell layer and an organic shell layer coated outside the inorganic shell layer. The preparation method includes the following steps: adding a self-healing substance to an emulsifier to obtain a mixture; adding a silicon source substance to the obtained mixture after being hydrolyzed under an acidic condition to form an inorganic micro-organism in which an inorganic shell layer coats the self-repairing substance. Capsules; the antibacterial self-healing microcapsules are obtained by emulsion polymerization of the obtained inorganic microcapsules and acrylic monomers. The microcapsule of the present invention adopts the composite shell layer of the silica inorganic shell layer and the organic shell layer, which can make the microcapsules have good compatibility with the film-forming substances in the coating, and reduce the time required for the microcapsules used in the coating. The phenomenon of inter-agglomeration improves its storage and high stability.

Description

technical field [0001] The invention relates to the technical field of antibacterial coatings, in particular to an antibacterial self-healing microcapsule, a preparation method thereof, and an application in coatings. Background technique [0002] With the improvement of people's demand for healthy life, the role of household material coatings is not only decorative, but also puts forward higher requirements for other functionalities of coatings, such as antibacterial and self-healing after paint film damage sex. At present, the antibacterial properties of coatings are mainly achieved by adding organic fungicides, some metal salts or metal nanoparticles or other photocatalytic materials. Among them, organic fungicides are generally small molecules, which migrate during use, have poor durability, and are not environmentally friendly. The laws and regulations of many countries have clear restrictions on the amount of organic fungicides added; Particle antibacterial agents ha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/14C09D7/65C09D7/61B01J13/02
CPCC09D5/14C09D7/65C09D7/61C09D7/70B01J13/02
Inventor 李维亚强志华
Owner 三棵树(上海)新材料研究有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com