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A microwave-absorbing corrosion-resistant powder material and a preparation method thereof

A powder material, microwave absorption technology, applied in chemical instruments and methods, metal material coating technology, other chemical processes, etc. Effects of insufficient microwave absorption capacity

Inactive Publication Date: 2018-11-27
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 strengthening 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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  • A microwave-absorbing corrosion-resistant powder material and a preparation method thereof
  • A microwave-absorbing corrosion-resistant powder material and a preparation method thereof
  • A microwave-absorbing corrosion-resistant powder material and a preparation method thereof

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Experimental program
Comparison scheme
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 is 4:1, the specific preparation method adopted is:

[0023] The first step: preparing the inner core of the magnetic metal micropowder. First, disperse 10 g of magnetic metal micropowder (carbonyl iron: cobalt weight ratio = 4:1) with a particle size of about 1 micron 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 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 dodecylbenzene So...

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 oxyhydroxide=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 ...

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Abstract

The invention discloses a corrosion-resistant powder material capable of absorbing microwave and a preparation method thereof, wherein the powder material is a core-shell structure, the core-shell structure comprises a shell and a core, the shell is a mesoporous silicon dioxide layer, the core is magnetic metal particles, a corrosion inhibitor is filled between the shell and the core, and the particle size of the magnetic metal particles is 0.6 1 micron, is iron carbonyl and nickel carbonyl, or a composite of iron carbonyl and cobalt carbonyl, the weight ratio of iron carbonyl 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 microwave-absorbing corrosion-resistant powder material and a preparation method thereof. Background technique [0002] Microwave absorbing coatings are composites of polymers and microwave absorbers (hereinafter referred to as absorbers). 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) to penetrate the polymer layer) to cause metal corrosion, generate non-magnetic substances (such as Fe2O3), and then affect the electromagnetic properties of the absorbent; at the same time ...

Claims

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Application Information

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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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