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Preparation method of magnetic response dynamic coating

A dynamic coating, magnetic response technology, applied in coatings, magnetic coatings, devices for coating liquids on surfaces, etc., can solve the problem that the protection process is no longer controlled, and achieve long-term excellent self-cleaning and anti-fouling performance, the effect of preventing surface scaling

Inactive Publication Date: 2020-02-04
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the traditional coating is applied to the surface of the material, its protection process is no longer under control

Method used

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  • Preparation method of magnetic response dynamic coating
  • Preparation method of magnetic response dynamic coating
  • Preparation method of magnetic response dynamic coating

Examples

Experimental program
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Embodiment 1

[0036] (1) Magnetic particle modification

[0037] Mix 10 mL of ethanol with a volume fraction of 92% and 0.1 mL of silane coupling agent, stir for 30 minutes, and after the solution is uniformly mixed and hydrolyzed, select 1 g of carbonyl iron powder with a particle size of 1200 mesh and add it to the mixed solution. Introduce nitrogen gas to remove oxygen in the solution, and stir in nitrogen atmosphere to prevent oxidation of magnetic particles. After stirring for 6 hours at a rotational speed of 1200r / min, the carbonyl iron particles were adsorbed to the bottom of the beaker with a magnet, the supernatant was poured off, washed with ethanol three times, and the carbonyl iron particles were dried in a vacuum.

[0038] (2) Preparation of magnetically responsive porous substrates

[0039] Take 8g of PDMS, 6g of modified carbonyl iron and mix evenly, and stir at 600r / min for 2 hours; take 2g of ammonium carbonate, grind it, and use a 300-mesh fine sieve to screen 0.5g of sma...

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Abstract

The invention relates to a preparation method of a magnetic response dynamic coating, and belongs to the field of surface protection. The coating is applied to the fields including surface lubricationand marine pollution prevention. The coating comprises the following features that 1, an organic silicon film layer mixed with magnetic response particles is included; 2, the interior of the film layer is a porous structure, and the exterior of the film layer is a micro-nano rough surface; and 3, lubricating oil containing a bactericide and a corrosion inhibitor is stored in the film layer and the porous structure. By applying an external magnetic field, the internal magnetic particles vibrate so as to squeeze the coating to secrete the lubricating oil, so that the surface has long-acting lubrication effects; meanwhile, the magnetic particles vibrate to form a dynamic unstable surface, so that effective protection is realized through the synergistic effect between a super-lubricating surface and the dynamic surface; and finally, the service life of the super-lubricating surface is greatly prolonged, and anti-corrosion and anti-fouling functions are enhanced.

Description

technical field [0001] The invention relates to a magnetic response dynamic coating and a preparation method thereof, belonging to the field of surface protection. Background technique [0002] Marine engineering such as offshore drilling platforms, docks, etc. Marine equipment such as ships and submarines are often fouled by phytoplankton, animals, and microorganisms in the ocean, resulting in damage to engineering or equipment, such as ship propellers being entangled by barnacles, and shellfish growing on the surface of submarines. Classes affect its stealth, the steel structure of the offshore platform breaks, the coating of the pier falls off, and so on. The cause of microbial fouling is the adhesion of fungi, spores, algae, mosses, mussels and other large animals and plants in seawater. The accumulated microorganisms metabolize for a long time, and the extracellular substances formed or phagocytized carbon and nitrogen sources gradually destroy materials, and the develo...

Claims

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Application Information

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IPC IPC(8): B05D7/24B05D5/00C09D183/04C09D5/23C09D5/16C09D5/08B05D3/00
CPCB05D3/002B05D3/207B05D5/00B05D7/24C08K2003/2275C08K2201/01C09D5/08C09D5/1687C09D5/23C09D183/04C08K9/06C08K3/22
Inventor 张达威吴德权刘贝李晓刚
Owner UNIV OF SCI & TECH BEIJING
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