Novel electromagnetic shielding composite material and its preparing method
Title：
Novel electromagnetic shielding composite material and its preparing method
Application Number：
 200610081164
Application Date：
 2006/05/23
Announcement Date：
 2006/11/22
Pub. Date：
Publication Number：
 1867243
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H05K 9/00
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Nan Cewen, Li Baowen, Shen Yang
Key Words：
 Novel, electromagnetic shielding, composite material, preparing method
Abstract：
 The invention relates to a composite material formed by conductive stuff and ferromagnetic material, belonging to the electromagnetic shield material, and relative preparation. Wherein, it uses four three-phase composite systems as Ba3Co2Fe23O41-Ni-PVDF as the experiment object according to volume formula, mixing hexagonal ferrite, metal nickel particles, and polyvinylidene fluoride uniformly, to be arranged in mould at 180-220Deg. C and the pressure as 10-15MPa, hot pressing them for 15-20mins to be molded its total shield effect is 30-50dB at 8.2-12.4GHz and it can avoid the secondary pollution of electromagnetic wave, with better frequency stability of total shield effect. The invention combines the electric shield and magnetic shield, to mainly adsorb the electromagnetic wave, with wider application.
Claim：
Priority：
PCT：
LegalStatus：

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