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A kind of preparation method of microvascular self-healing coating

A microvascular and self-repairing technology, applied in the direction of coating, epoxy resin coating, etc., can solve the problems of difficult transplantation, liquid paraffin is not difficult to clean, unfavorable for the promotion and application of microvascular self-repairing coating, etc., to achieve strong applicability, The effect of high repair efficiency

Active Publication Date: 2021-02-12
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, the paraffin three-dimensional microvessels completed by 3D printing are costly and difficult to transplant, and liquid paraffin is not difficult to remove, which is not conducive to the popularization and application of microvascular self-repairing coatings.

Method used

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  • A kind of preparation method of microvascular self-healing coating
  • A kind of preparation method of microvascular self-healing coating
  • A kind of preparation method of microvascular self-healing coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A method for preparing a microvascular self-repairing coating, comprising the following steps:

[0056] Step 1, surface modification of filler: first weigh a certain amount of muscovite, ground calcium carbonate, quartz powder and nano-SiO 2 As a filler, then weigh silane coupling agent KH-560 corresponding to 1.5% of the mass of the filler, dilute the silane coupling agent KH-560 with absolute ethanol to an 8% solution by mass, and spray it evenly into the In the corresponding filler, and then dried at 60°C for later use;

[0057] Step 2, the preparation of primer: according to the quality of each component, dissolve 100 parts of epoxy resin E-44 in 80 parts of acetone solvent, add 9 parts of diethylenetriamine and 2 parts of benzyl alcohol after dissolving, and stir well Add 150 parts of modified quartz powder and keep stirring for 10-15 minutes. While stirring, add 100 parts of modified muscovite and 200 parts of modified calcium carbonate in turn, and add 50 parts ...

Embodiment 2

[0062] A method for preparing a microvascular self-repairing coating, comprising the following steps:

[0063] Step 1, surface modification of filler: first weigh a certain quality of talcum powder, light calcium carbonate instead, quartz powder and nano-SiO 2 As a filler, then weigh silane coupling agent KH-560 corresponding to the mass of 2% of the filler, dilute the silane coupling agent KH-560 with absolute ethanol into a 5% solution by mass, and spray it into the In the corresponding filler, and then dried at 60°C for later use;

[0064] Step 2, preparation of primer: according to the quality of each component, dissolve 100 parts of epoxy resin E-44 in 70 parts of acetone solvent, add 9 parts of diethylenetriamine and 2 parts of benzyl alcohol after dissolving, and stir well Add 200 parts of modified quartz powder and keep stirring for 10-15 minutes. While stirring, add 100 parts of modified muscovite and 300 parts of modified calcium carbonate in sequence, and add 10 pa...

Embodiment 3

[0069] A method for preparing a microvascular self-repairing coating, comprising the following steps:

[0070] Step 1, surface modification of fillers: first weigh a certain amount of bentonite, ground calcium carbonate, titanium dioxide and nano-SiO 2 As a filler, then weigh silane coupling agent KH-560 corresponding to 1.5% of the mass of the filler, dilute the silane coupling agent KH-560 with absolute ethanol to a 5% solution by mass, and spray it into the In the corresponding filler, and then dried at 60°C for later use;

[0071] Step 2, preparation of primer: according to the quality of each component, dissolve 100 parts of epoxy resin E-44 in 80 parts of acetone solvent, add 9 parts of diethylenetriamine and 3 parts of benzyl alcohol after dissolving, and stir well Add 200 parts of modified quartz powder and keep stirring for 10-15 minutes. While stirring, add 90 parts of modified muscovite and 200 parts of modified calcium carbonate in turn, and add 30 parts of aceton...

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Abstract

The invention discloses a preparation method of a microvascular self-repairing coating layer. The coating prepared by the method consists of a bottom layer coating layer and a surface layer coating layer. A microvascular network is constructed in the bottom layer coating layer and a repair agent is injected to the microvascular network, and a curing agent is added to a surface layer coating. Whenthe surface layer coating is damaged, the repair agent spills out at a damaged position through the microvascular network and reacts with the curing agent in the surface layer coating to heal damage.The constructed microvascular network system consists of 'aorta' and 'capillary', the aorta has large diameter, large reserve amount of the repair agent, and deep implantation and is not easily damaged, while the capillary has small diameter, relatively dense arrangement and shallow implantation and is easily damaged with the surface layer coating synchronously; the coating layer is guaranteed tohave high repair efficiency, and can achieve multiple times of repair at a same position.

Description

technical field [0001] The invention belongs to the field of self-repairing polymer materials, and in particular relates to a preparation method of a microvascular self-repairing coating. Background technique [0002] Polymers are prone to aging under the action of environment and load, and produce microcracks on the surface and inside, which will reduce the performance and life of the material. If the microcracks of the polymer can be automatically repaired so that they will not develop into damage, it will certainly be able to prolong its service life and improve the safety and reliability of use. Self-healing polymer materials were proposed in the 1970s. After more than 40 years of development, a variety of methods for repairing cracks have emerged: (1) repairing by using intermolecular interactions; (2) using thermally reversible crosslinking (3) self-repair by liquid core fiber method; (4) bionic self-repair by microcapsule method. Among them, the two self-repair meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/04C08J7/00C08J5/00C09D163/00C09D7/62C08L63/00
CPCC08J5/00C08J7/00C08J2363/00C08J2463/00C08K3/34C08K3/36C08K9/06C08K2003/265C08K2201/003C08K2201/011C08L63/00C09D163/00C08J7/0427
Inventor 董金虎
Owner SHAANXI SCI TECH UNIV
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