Corrosion-resistant powder material capable of absorbing microwaves and preparation method thereof

A powder material and microwave-absorbing technology, which is applied in the direction of chemical instruments and methods, metal material coating technology, and other chemical processes, can solve the problems of insufficient microwave absorption capacity of microwave-absorbing coatings and deterioration of corrosion resistance. Effects of Insufficient Microwave Absorbing Capability

Inactive Publication Date: 2020-04-03
山东格物新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention relates to a microwave-absorbing powder material with an anti-corrosion enhanced function and a preparation method thereof, which can effectively solve the problems of insufficient microwave absorption capacity and deterioration of corrosion resistance of conventional microwave-absorbing coatings

Method used

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  • Corrosion-resistant powder material capable of absorbing microwaves and preparation method thereof
  • Corrosion-resistant powder material capable of absorbing microwaves and preparation method thereof
  • Corrosion-resistant powder material capable of absorbing microwaves and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] The microwave-absorbing corrosion-resistant powder material of the present application adopts carbonyl iron with a particle size of 1 micron: when the ratio of cobalt weight ratio=4:1, the specific preparation method adopted is:

[0023] The first step: preparing the inner core of the magnetic metal micropowder. First, 10 g of magnetic metal fine powder (carbonyl iron: cobalt weight ratio = 4: 1) with a particle size of about 1 micron is dispersed in absolute ethanol and placed in a high-speed ball mill for processing. After grinding and dispersing for 5 hours, vacuum-dry at 50 ° C for 3 hours, powder A was obtained.

[0024] The second step: the surface of the magnetic metal micropowder is coated with a polymer layer. Weigh 1.1g of the powder A obtained above and ultrasonically disperse it into 200ml of aqueous solution, and stir continuously for 30min, wherein the peripheral linear velocity of the stirring blade is 3-5 m / s, and then add 0.06g of surfactant dodecylben...

Embodiment 2

[0030] The microwave-absorbing corrosion-resistant powder material of the present application adopts carbonyl iron with a particle size of 0.6 microns: when the proportioning ratio of nickel oxyhydroxide=8:1, the specific preparation method adopted is:

[0031] The first step: preparing the inner core of the magnetic metal micropowder. First, disperse 10 g of magnetic metal micropowder (iron carbonyl: nickel oxyhydroxide weight ratio = 8:1) with a particle size of about 0.6 microns in absolute ethanol and place it in a high-speed ball mill for processing. After grinding and dispersing for 5 hours, vacuum dry at 50 ° C. After 3 hours, powder A was obtained.

[0032] The second step: the surface of the magnetic metal micropowder is coated with a polymer layer. Weigh 1.1g of the powder A obtained above and ultrasonically disperse it into 200ml of aqueous solution, and stir continuously for 30min, wherein the peripheral linear velocity of the stirring blade is 3-5 m / s, and then a...

Embodiment 3

[0038] The microwave-absorbing corrosion-resistant powder material of the present application adopts carbonyl iron with a particle size of 0.8 microns: when the proportioning ratio of nickel hydroxyl = 6: 1, the specific preparation method adopted is:

[0039] The first step: preparing the inner core of the magnetic metal micropowder. First, disperse 10 g of magnetic metal micropowder (carbonyl iron: nickel hydroxide weight ratio = 6:1) with a particle size of about 0.8 microns in absolute ethanol and place it in a high-speed ball mill for processing. After grinding and dispersing for 5 hours, vacuum dry at 50 ° C. After 3 hours, powder A was obtained.

[0040] The second step: the surface of the magnetic metal micropowder is coated with a polymer layer. Weigh 1.1g of the powder A obtained above and ultrasonically disperse it into 200ml of aqueous solution, and stir continuously for 30min, wherein the peripheral linear velocity of the stirring blade is 3-5 m / s, and then add 0...

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Abstract

The invention discloses a corrosion-resistant powder material capable of absorbing microwaves and a preparation method thereof. The powder material has a core-shell structure, the core-shell structure includes an outer shell and an inner core, the outer shell is a mesoporous silica layer, and the inner core is a magnetic metal particle. A corrosion inhibitor is filled between the outer shell and the inner core, and the particle size of the magnetic metal particles is 0.6-1 micron, which is a composite of carbonyl iron and carbonyl nickel, or carbonyl iron and cobalt, and the weight ratio of carbonyl iron to nickel or cobalt is 8: 1‑4:1. The invention can effectively solve the problems of insufficient microwave absorption and deterioration of corrosion resistance of conventional coatings.

Description

technical field [0001] The invention relates to the technical field of marine anticorrosion, in particular to a corrosion-resistant powder material capable of absorbing microwaves and a preparation method thereof. Background technique [0002] Microwave absorbing coating is a compound composed of polymer and microwave absorber (hereinafter referred to as absorber). Its microwave absorbing performance is closely related to the electromagnetic properties of the absorber, the coating structure and the contact state with the coated substrate. Absorbents currently used cannot achieve absolute purity, and contain metal impurities to varying degrees. When in a corrosive atmosphere (even if there is a polymer shielding protection in the coating, under the influence of multiple factors such as high temperature, high humidity, and high salt in the marine environment (Accelerating the aging of polymers), it will also accelerate the corrosion medium (water vapor containing chloride ions...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02C23C18/12C09K3/00
CPCC09K3/00C23C18/1216B22F1/102B22F1/16
Inventor 吕德超宋妍
Owner 山东格物新材料科技有限公司
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