Thin, Flexible, Impervious, Broadband Absorbers
ECCOSORB
®
FGM
Material Characteristics
•
•
•
•
•
•
•
Thin, flexible, broadband, magnetically loaded, silicone
absorber sheets
Flame resistant and impervious to moisture
Does not support fungal growth per MIL-STD-810E
Low out-gassing properties for space applications
Can be subjected to high altitudes, including space
with no adverse effects
Can be readily cut with a sharp knife
Conforms to contoured surfaces and can be bonded to
metallic or non-metallic structures
Typical Properties
FGM-40
Frequency Range (GHz)
Average Reflectivity (dB)
Service Temperature, °F (°C)
Short Time Service Temp., °F (°C)
Weight, lb/ft
2
(kg/m
2
)
Density, lb/ft
3
(g/cm
3
)
4-10
-10
350 (177)
500 (260)
1.0 (4.9)
318 (5.2)
0.16 (0.20)
0.06 (0.03)
2.2 (10.7)
200 (3.2)
0.31 (0.23)
0.10 (0.06)
FGM-125
2-12
-12
Applications
•
%TML
%CVCM
(with SS6M)
(with SS6M)
•
ECCOSORB
®
FGM is used to line cavities in which
antennas operate. It may be applied to surfaces to
improve radar performance, reduce radar cross section
or backscattering.
ECCOSORB
®
FGM is effective even at high power in
reducing specular reflections and surface currents
Instructions for Use
•
•
Availability
•
•
•
Standard sheets are 12” x 12” (30.5cm x 30.5cm)
On request ECCOSORB
®
FGM can be supplied with a
Pressure
Sensitive
Adhesive
(PSA)
designated
ECCOSORB
®
FGM-XX/SS6M
ECCOSORB
®
FGM is available in other sizes and
customer specified configurations
•
•
•
•
To obtain low reflectivity, the absorbers must be
mounted on a metal surface
To bond ECCOSORB
®
FGM without a PSA, use
STYCAST
®
4952. Primer S-11 should also be used
prior to the adhesives application
To ensure a strong bond, the metallic surface should
be thoroughly cleaned with a solvent to remove any
oil, grease, or dusts
Apply a thin coat of Primer S-11 to the metal and
allow to dry.
Coverage is 147 ft
2
/lb per 1 mil
thickness
Apply a thin coat of STYCAST
®
4952 two-part RTV
silicone over the primer.
Firmly press ECCOSORB
®
FGM into place and hold
until cure is complete
Typical Reflectivity
0
Reflectivity (dB)
-5
-10
-15
-20
2
4
6
8
10
12
14
16
18
Frequency (GHz)
FGM-40
FGM-125
EMERSON & CUMING MICROWAVE PRODUCTS, INC., 28 York Avenue, Randolph, MA 02368 / Telephone (781) 961-9600. Use of Information and Material: Values shown are based on testing of laboratory test specimens and represent data that
falls within normal range of the material. These values are not intended for use in establishing maximum, minimum or ranges of values for specification purposes. Any determination of the suitability of the material for any purpose
contemplated by the user and the manner of such use is the responsibility of the user. The user should determine that the material meets the needs of the user's product and use. We hope that the information given here will be helpful. It is
based on data and knowledge considered to be true and accurate and is offered for the user's consideration, investigation and verification but we do not warrant the results to be obtained. Please read all statements, recommendations or
suggestions in conjunction with our conditions of sale INCLUDING THOSE LIMITING WARRANTIES AND REMEDIES, which apply to all goods supplied by us. We assume no responsibility for the use of these statements, recommendations or
suggestions nor do we intend them as a recommendation for any use, which would infringe any patent or copyright. Emerson & Cuming Microwave Products Inc.
Revision: 4/20/12
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