Fiber and/or scale enhanced self-repairing anticorrosive coating material, preparation method and application thereof

An anti-corrosion coating and self-healing technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as microcapsule attachment, and achieve the effects of simple preparation method, easy large-scale preparation, and improved bonding tightness

Active Publication Date: 2021-08-20
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

At present, most self-healing microcapsule technologies focus on changing the functionality of the capsule wall and capsule core, but few of them attach microcapsules to functional carriers and apply them to functional coatings to achieve functional repair of coatings.

Method used

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  • Fiber and/or scale enhanced self-repairing anticorrosive coating material, preparation method and application thereof

Examples

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preparation example Construction

[0018] In some more specific embodiments, the preparation method of component A of the self-healing microcapsules comprises: making a first mixture comprising a first core material, an emulsifier and a second solvent and a second mixture comprising a wall material and an acid Mix evenly, then add an oxidizing agent and react at 20-40° C. for 4-7 hours to obtain component A of the self-healing microcapsule.

[0019] Further, the preparation method of the self-healing microcapsule A component specifically includes:

[0020] Mix the first core material, emulsifier and second solvent, and stir at a speed of 3000 to 6000 rpm for 20 to 40 minutes to form the first mixture, wherein the mass ratio of the first core material to the second solvent is (5 ~10): 100, the mass ratio of the emulsifier to the second solvent is (1 ~ 3): 100;

[0021] Ultrasonically disperse the second mixture of the wall material and the acid for 30-60 minutes to form the second mixture, wherein the mass rati...

Embodiment 1

[0100] 1. The preparation process of self-healing microcapsule A component and self-healing microcapsule B component is as follows:

[0101] (1) Add 5wt% quaternized polyethyleneimine and 1wt% span80 and tween60 compound emulsifier to the water, the compound mass ratio is 5:1, stir for 40min at a speed of 3000r / min, disperse and let stand stand-by;

[0102] (2) Add 5wt% polypyrrole to a phytic acid aqueous solution with a concentration of 3wt%, stir evenly, and ultrasonically disperse for 30 minutes to stand for use;

[0103] (3) Add 30wt% of (1) into (2), stir and mix evenly for later use;

[0104] (4) Potassium persulfate is mixed with 50wt% aqueous solution;

[0105] (5) Add (4) dropwise to (3) according to the ratio (mass ratio) of potassium persulfate to polypyrrole of 0.6:1, stir at room temperature for 6 hours, filter, wash, and dry to obtain self-repairing microcapsule A group Minute;

[0106] In the above steps, replace the core material reagent in (1) with a poly...

Embodiment 2

[0116] 1. The preparation process of self-healing microcapsule A component and self-healing microcapsule B component is as follows:

[0117] (1) Add 10wt% imidazoline quaternary ammonium salt and 3wt% span80 and tween60 compound to water, the compound mass ratio is 3:1, stir at 6000r / min for 20min, disperse evenly and let stand for use ;

[0118] (2) Add 10wt% polythiophene to a phosphoric acid aqueous solution with a concentration of 6wt%, stir evenly, and ultrasonically disperse for 60 minutes to stand for use;

[0119] (3) Add 50wt% of (1) into (2), stir and mix evenly for later use;

[0120] (4) Hydrogen peroxide is mixed with 30wt% aqueous solution;

[0121] (5) Add (4) dropwise to (3) according to the ratio (mass ratio) of hydrogen peroxide to polythiophene 0.9:1, stir at room temperature for 6 hours, filter, wash, and dry to obtain self-repairing microcapsule group A point.

[0122] In the above steps, replace the core material reagent in (1) with phenalkamine curin...

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Abstract

The invention discloses a fiber and/or scale enhanced self-repairing anticorrosive coating material, a preparation method and application thereof. The fiber and/or scale reinforced self-repairing anticorrosive coating material comprises the following components in parts by weight: 40-70 parts of a matrix resin, 0.1-0.5 part of scale micro-powder graphite, 5-10 parts of ground calcium carbonate, 10-20 parts of a pigment filler, 3-5 parts of a coupling agent, 1-5 parts of a self-repairing microcapsule component A, 1-5 parts of a self-repairing microcapsule B, 3-8 parts of microcapsule chemical fiber and/or scales, 0.5-1.5 parts of a dispersing agent, 0.1-0.5 part of a flatting agent, 0.1-0.5 part of a defoaming agent, 0.5-1.5 parts of an anti-sagging agent and 12-24 parts of a first solvent. The fiber and/or scale enhanced self-repairing anticorrosive coating material prepared by the invention has good impact resistance and self-repairing performance; and the preparation method is simple, large-scale preparation is easy, the coating can be widely applied to the surfaces of matrixes impacted by water waves or in dynamic working environments in rivers, lakes and seas, and the service life of the coating is prolonged.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, in particular to a fiber and / or scale-reinforced self-repairing anti-corrosion coating and its preparation method and application. Background technique [0002] As a mature product, paint has been widely used in industrial production and daily life, and the level of paint technology has also been rapidly improved. Therefore, a wide variety of paint products have appeared on the market. However, while people pay attention to the improvement of coating technology, most of the technical improvement focuses on the formulation technology, performance, and functionality of coatings, while the repair and maintenance of coatings are mostly replaced by replacing the old with the new. . In today's society, the slogans of environmental protection and conservation are vigorously advocated all over the world. Under the circumstance of extremely fast industrial innovation, the surface protecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D127/12C09D183/04C09D163/00C09D7/63C09D7/65C09D7/61C09D7/62
CPCC09D5/08C09D127/12C09D183/04C09D163/00C09D7/63C09D7/65C09D7/61C09D7/62C09D7/70C08L2205/16C08L61/16C08L79/04C08L79/02C08L77/00C08K9/10C08K5/47C08K7/00C08L65/00C08K9/06C08K5/3445C08K5/3475C08K7/26
Inventor 张昕王立平卢光明杜玉洁毛飞雄
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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