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Ferrite core surface epoxy powder coating application process

A ferrite core, epoxy powder technology, applied in powder coatings, epoxy coatings, devices for coating liquid on surfaces, etc., can solve the problem of poor thermal conductivity, low coating adhesion, electrical breakdown, etc. problem, to achieve the effect of improving adhesion, increasing roughness, and improving removal ability

Inactive Publication Date: 2017-05-31
NANJING VOCATIONAL UNIV OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the thermal conductivity of ferrite is worse than that of metal, powder coatings have low coating adhesion and are prone to electrical breakdown during the ferrite coating process.

Method used

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  • Ferrite core surface epoxy powder coating application process
  • Ferrite core surface epoxy powder coating application process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A ferrite magnetic core surface epoxy powder coating process, its preparation method comprises the following steps:

[0019] (1) Weigh 5 parts of sodium chloride, 23 parts of sodium bicarbonate, and 93 parts of water into the reactor, and finally add 38 parts of ethanol, with a stirring speed of 170r / min, and maintain the system temperature at 43°C for 0.8h , to obtain a surface treatment agent;

[0020] (2), Weigh 100 parts of epoxy glossy powder coatings and add them to the ball mill, then weigh 1.8 parts of α-cyanoacrylate, 3 parts of nano-aluminum powder, 3.3 parts of polymethylacrylate, 1.6 parts of melamine resin in 5 parts Add it to the ball mill one by one, react for 2 hours at a temperature of 35°C and a cylinder speed of 49r / min, and screen uniform particles with a particle size of 0.05-0.1mm through a 200-mesh screen to obtain a modified epoxy powder coating;

[0021] (3) Put the ferrite core in 5L of surface treatment agent, clean it for 0.3h at an ultrason...

Embodiment 2

[0025] A ferrite magnetic core surface epoxy powder coating process, its preparation method comprises the following steps:

[0026] (1) Weigh 5 parts of sodium chloride, 17 parts of sodium bicarbonate, and 90 parts of water into the reactor, and finally add 30 parts of ethanol, stir at 150 r / min, and keep the system temperature at 30°C for 0.3 hours. , to obtain a surface treatment agent;

[0027] (2), Weigh 100 parts of epoxy semi-gloss powder coating and add it to the ball mill, then weigh 0.5 parts of sulfated castor oil, 1 part of nano-copper powder, 1 part of polybutylacrylate, and 1 part of melamine resin in 5 times one by one Add it to a ball mill, react for 1 hour at a temperature of 25°C, and a cylinder rotating speed of 35 r / min, and screen uniform particles with a particle size of 0.05 to 0.1 mm through a 200-mesh screen to obtain a modified epoxy powder coating;

[0028] (3) Put the ferrite core in 5L of surface treatment agent, clean it for 0.2h at an ultrasonic ...

Embodiment 3

[0031] A ferrite magnetic core surface epoxy powder coating process, its preparation method comprises the following steps:

[0032] (1) Weigh 5 parts of sodium chloride, 30 parts of sodium bicarbonate, and 100 parts of water into the reactor, and finally add 45 parts of ethanol, with a stirring speed of 200 r / min, and maintain the system temperature at 50°C for 2 hours. get surface treatment agent;

[0033] (2) Weigh 100 parts of epoxy glossy powder coating and add it to the ball mill, then weigh 3 parts of α-cyanoacrylate, 5 parts of nano-silver powder, 4 parts of polymethyl acrylate, and 3 parts of melamine resin for 5 times Add them into the ball mill one by one, react for 3 hours at a temperature of 50°C, and a cylinder rotating speed of 65r / min, and screen uniform particles with a particle size of 0.05-0.1mm through a 200-mesh screen to obtain a modified epoxy powder coating;

[0034] (3) Put the ferrite core in 5L of surface treatment agent, clean it for 0.5h at an ultr...

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Abstract

The invention relates to a ferrite core surface epoxy powder coating application process, comprising the steps of preparing modified epoxy powder coating, treating the surface of a ferrite core, thermally treating the surface, applying coating to the surface, thermally treating the surface, cooling, discharging, and detecting properties, wherein the modified epoxy powder coating is made by reaction of epoxy powder coating, a penetrant, nano metal powder, polyacrylate, and melamine resin, and a surface treating agent is made by reaction of sodium chloride, sodium bicarbonate, water and ethanol. The surface treating agent prepared herein is capable of excellently removing pollutants, such as oil, protein, fat, and dust; the modified epoxy powder coating has excellent properties, such as adhesion, leveling performance, and voltage breakdown resistance; the ferrite core surface epoxy powder coating application process designed herein provides adhesion of the epoxy powder coating to the surface of ferrite to be improved greatly, voltage breakdown resistance is achieved, and the defects such as pits, wrinkles, pinholes, bumps are effectively reduced.

Description

technical field [0001] The invention relates to a powder coating coating process on the surface of a ferrite magnetic core. Background technique [0002] Ferrite is sintered from iron oxide and other ingredients, and is a ferromagnetic metal oxide. Ferrite has higher magnetic permeability at high frequency, higher dielectric properties, and higher resistivity than metal magnetic materials. Widely used in telecommunications, motors, electroacoustics, electric meters, memory components, magnetic tapes, microwave components, magnetic cards, magnetic storage devices and other fields. [0003] At present, ferrite surface coating materials mainly include oil-based coatings, water-based coatings and powder coatings. Water has an effect on the performance of ferrite, therefore, water-based coatings are not widely used in ferrite. However, during the coating process of oil-based paint, organic solvents are volatilized, and the organic solvents remain in the final product, which do...

Claims

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Application Information

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IPC IPC(8): B05D7/14B05D7/24B05D3/10C09D163/00C09D5/03C09D7/12
CPCB05D7/14B05D3/102B05D7/24B05D2202/10B05D2350/35B05D2504/00B05D2601/28B05D2602/00C08K2201/011C08L2205/03C09D5/033C09D7/61C09D7/65C09D163/00B05D2401/32C08L33/08C08L61/28C08K2003/0812
Inventor 栗娟余旺旺李彩虹匡余华
Owner NANJING VOCATIONAL UNIV OF IND TECH
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