Development of Heat Absorbing and High Electromagnetic Shielding Pre-Painted Steel Sheet

• Published in: Corrosion science and technology Vol. 9; no. 4; pp. 153 - 158
• Main Authors: Hosokawa, Tomoaki, Ueda, Kohei, Yuasa, Kensei, Nakazawa, Makoto
• Format: Journal Article
• Language: Korean
• Published: 한국부식방식학회 01.08.2010
• Subjects: electrical appliances; electromagnetic shielding; heat absorbing; heat emission; pre-painted; transfer impedance; pre-painted; heat absorbing; heat emission; electromagnetic shielding; transfer impedance; electrical appliances
• ISSN: 1598-6462

Electrical appliances such as audiovisual equipment and personal computers have recently had heat and electromagnetic problems. In order to solve those problems, 'High heat absorbing pre-painted steel sheet (hereinafter referred to as PSS)', 'High electromagnetic shielding PSS' and 'High heat absorbing and high electromagnetic shielding PSS' have been developed. In this paper, the heat characteristics and electromagnetic shielding properties of PSS are investigated by methods that use enclosures and their mechanisms are discussed. It was found that 'High heat absorbing PSS' and 'High heat absorbing and high electromagnetic shielding PSS'could reduce the heat problem. The mechanism of the heat characteristics was presumed for the high heat absorptivity of the back coating inside the enclosure. And it was also found that 'High electromagnetic shielding PSS' and 'High heat absorbing and high electromagnetic shielding PSS' could shield electromagnetic waves well. The mechanism of the electromagnetic shielding properties was considered for the low transfer impedance of the back coating inside the enclosure. 'High heat absorbing PSS' and 'High electromagnetic shielding PSS' have been adopted as materials for electrical appliances and 'High electromagnetic shielding and high heat absorbing PSS' have been tested for that purpose.