Electromagnetic compatible dark chamber composite wave absorption material and mfg. method thereof

The invention relates to electromagnetic compatibility dark room complex type wave absorbing material and its manufacturing method. It is transition matching section between polyurethane wave absorbing material and ferrite material whose thickness is relative with working frequency of the electromag...

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Bibliographische Detailangaben
1. Verfasser:	GUIMIN,SHI CHEN
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILSOF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR DYES INSTRUMENT DETAILS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PERFORMING OPERATIONS PHYSICS POLISHES TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to electromagnetic compatibility dark room complex type wave absorbing material and its manufacturing method. It is transition matching section between polyurethane wave absorbing material and ferrite material whose thickness is relative with working frequency of the electromagnetic compatibility dark room and the dielectric constant epsilon = 7.04+\-0.1. The advantages of the invention are that it has wide working frequency with 30MHz-40000MHz, better low frequency stage wave absorbing performance; it has -12dB absorbing level while 30MHz which reach foreign advanced stage; it reduce material height to reduce dark room size.