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Magnetic brick with electromagnetic shielding and decoration functions and its preparation method thereof

An electromagnetic shielding and tile technology is applied in the field of tile preparation to achieve the effects of simple mold making, good magnetic performance and low cost

Inactive Publication Date: 2007-11-07
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The toxicity of acrylamide has become a bottleneck restricting the industrial application of this technology in addition to process factors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In terms of parts by mass, add 5 parts of hydroxyethyl methacrylate and tetraethylene glycol diacrylate mixture prepared by mixing 100 parts of deionized water according to the mass ratio of 10:1, 3 parts of Duramax TM D-3005, 0.17 parts of ammonium persulfate, mixed well and evenly to make a monomer solution. Duramax TMD-3005 is 30% medium molecular weight ammonium polyacrylate, molecular weight is 4000-10000, is produced by DURAMAX company (the Duramax of following embodiment TM D-3005 specification and production unit are the same as embodiment 1). Subsequently, in terms of parts by mass, 70 parts of Ni—Zn soft ferrite powder was mixed with 30 parts of the monomer solution prepared in the previous step to prepare a suspension system. Then the suspension system is poured into a forming mold, heated to 70° C., kept for 3 hours, demolded and dried to make a tile green body. Finally, glazing and printing the tile blanks; and keeping the glazed and printed tile blank...

Embodiment 2

[0024] In terms of parts by mass, add 15 parts of a mixture of hydroxyethyl methacrylate and tetraethylene glycol diacrylate prepared by mixing according to the mass ratio of 25:1 into 100 parts of deionized water, and then add 3 parts of water-soluble polymer Materials PEO, 5 parts Duramax TM D-3005, 0.3 part of ammonium persulfate, made into monomer solution. Then, in parts by mass, 75 parts of Ni-Zn soft magnetic ferrite powder was mixed with 25 parts of the monomer solution prepared in the previous step to obtain a suspension system; and the suspension system was poured into a molding mold and heated to 60°C , keep warm for 6 hours, demould, dry, and make tile green body. Afterwards, glaze and print the green tiles; and heat the green tiles for glazing and printing at 1200° C. for 3 hours, and fire them once to produce tiles with electromagnetic shielding and decorative functions. After testing, the density of the prepared tiles is 4.78g / cm 3 , the reflection loss in t...

Embodiment 3

[0026] In terms of parts by mass, add 18 parts of a mixture of hydroxyethyl methacrylate and tetraethylene glycol diacrylate prepared by mixing according to the weight to mass ratio of 35:1 into 100 parts of deionized water, and then add 10 parts of high water-soluble Molecular material PVP, 7 parts of dispersant Duramax TM D-3005, 0.5 part of ammonium persulfate, made into monomer solution. Then, in parts by mass, 78 parts of Ni-Zn soft magnetic ferrite powder and 22 parts of the monomer solution prepared in the previous step were mixed to obtain a suspension system; and the suspension system was poured into a molding mold and heated to 65°C , keep warm for 2 hours, demould, dry, and make tile green. Subsequently, glaze and print the green tiles; and heat the green tiles for glazing and printing at 1300° C. for 4 hours, and fire them once to produce magnetic tiles with electromagnetic shielding and decorative functions. After testing, the density of the prepared tiles is 4...

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Abstract

The invention relates to a magnetic brick with electromagnetic shielding and decoration functions and its preparation method which comprises charging the mixture of hydroxyethyl methacrylate and triethylene glycol dimethylacrylate mixed by the mass ratio of 10 : (50-1), water-soluble macromolecular material, dispersing agent, initiating agent into deionized water, mixing to prepare monomer solution, then charging soft magnetic ferrite powder into the prepared monomer solution, mixing to obtain suspension system, then pouring the suspension system into molding dies, heating, thermal insulating, demoulding, drying, thus obtaining ceramic tile plain blanks, then glazing and stamping on the blanks, finally thermal insulating 3-4 hours at 1200-1400 deg. C.

Description

technical field [0001] The invention relates to the technical field of anti-electromagnetic interference material preparation and magnet molding processing, and specifically refers to a preparation method of a magnetic tile with electromagnetic shielding and decoration functions. Background technique [0002] Electromagnetic interference (EMI), or electromagnetic noise, is an invisible pollution that cannot be sensed by the senses due to the development of electronic technology, especially the popularization and application of digital circuits, mobile communications and switching power supplies. With the rapid development of information technology, especially the rapid popularization of mobile communications, computers, and household appliances, electronic products have been widely used in various fields of people's daily production and life. On the other hand, in order to reduce the size of the equipment and improve the performance of the equipment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/26C04B35/30C04B35/632
Inventor 车晓舟
Owner SOUTH CHINA UNIV OF TECH
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