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Plate-shaped ferrite particles for pigment which exhibit metallic lustre

A metallic luster and ferrite technology, applied in the direction of iron oxide/hydroxide, iron oxide, iron compounds, etc., can solve the problems of lack of shielding ability and designability, and achieve the effect of taking design into account

Active Publication Date: 2017-09-26
POWDERTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] As mentioned above, there is no ferrite particle for pigment use that has both electromagnetic wave shielding ability and designability

Method used

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  • Plate-shaped ferrite particles for pigment which exhibit metallic lustre
  • Plate-shaped ferrite particles for pigment which exhibit metallic lustre
  • Plate-shaped ferrite particles for pigment which exhibit metallic lustre

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] (production of ink)

[0069] Weigh iron oxide, nickel oxide, zinc oxide, copper oxide to make Fe 2 o 3 49 moles of NiO, 15 moles of NiO, 30 moles of ZnO, and 6 moles of CuO. After mixing with a Henschel mixer, the mixture is granulated with a roller press, and then the calcination temperature is 1000 ° C in a rotary furnace in an atmospheric environment. pre-calcined.

[0070] The obtained calcined product was coarsely pulverized by a rod mill and then finely pulverized by a wet bead mill to obtain a cake-like calcined product having a moisture-adjusted solid content of 80% by weight. A dispersant is added to the cake-like pre-calcined product, and it is dispersed with a homogenizer to make a water-based ink. Furthermore, a binder (PVA) was added so that the water content with respect to the water-based ink might be 2% by weight.

[0071] (Coating and peeling from the coated surface)

[0072] Coating was performed on a commercially available PET film (thickness: 50...

Embodiment 2

[0076] Plate-shaped ferrite particles were obtained in the same manner as in Example 1 except that the solid content of the ink was 85% by weight.

Embodiment 3

[0078] Plate-shaped ferrite particles were obtained in the same manner as in Example 1 except that the solid content of the ink was 70% by weight.

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Abstract

The purpose of the present invention is to provide: plate-shaped ferrite particles for a pigment which exhibit both an electromagnetic-wave-shielding capacity and designability; a resin moulded article including said plate-shaped ferrite particles for the pigment; and an electromagnetic-wave-shielding housing for accommodating electronic circuits which uses said resin moulded article. Accordingly, provided are: plate-shaped ferrite particles for a pigment which are characterized by exhibiting a metallic lustre; a resin moulded article including said plate-shaped ferrite particles for the pigment; and an electromagnetic-wave-shielding housing for accommodating electronic circuits which uses said resin molded article.

Description

technical field [0001] The present invention relates to plate-shaped ferrite particles for pigments having metallic luster, and more specifically, to plate-shaped ferrite particles for pigments having electromagnetic wave shielding capability and designability, and to a resin containing the plate-shaped ferrite particles for pigments A molded body, and an electromagnetic wave shielding case for accommodating an electronic circuit using the resin molded body. Background technique [0002] In recent years, with the digitalization, high-performance, and miniaturization of electronic and communication equipment, electromagnetic waves generated by other equipment become noise, causing equipment to malfunction or adversely affecting the human body. Therefore, there is an increasing demand for electromagnetic wave absorbing materials or electromagnetic shielding materials that prevent electromagnetic waves from leaking from sources or that shield external electromagnetic waves. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/00C01G53/00C09C1/24H01F1/36H05K9/00C09D7/61
CPCC01G49/00C01G53/00C09C1/24H01F1/36H05K9/00C09D7/69C09D7/70C09D7/61C08K3/22C09C1/245H05K9/0007C01P2004/54C08K2003/2265C01G49/06C01P2004/20C01P2006/42C09D5/36H05K9/0026
Inventor 安賀康二五十嵐哲也
Owner POWDERTECH
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