Eccostock®PP
Flexible, Low Loss, Closed Cell Polyethylene Foam
FLEXIBLE LOW LOSS CLOSED CELL FOAM
Eccostock PP is a closed cell, cross-linked
polyethylene
foam with low loss, low dielectric, and low
density. Due to the low dielectric constant, the materials are essentially transparent to
electromagnetic energy. Dielectric constant does not change with frequency and change with
temperature is negligible. It offers excellent thermal insulation. Eccostock PP is lightweight and will
return to its normal thickness after being compressed. It can be heat sealed to form blocks of
material or to make contoured pieces that can be draped over complex objects.
It is tough and weather resistant.
FEATURES AND BENEFITS
•
Lightweight
•
Low loss, low dielectric, low density
•
Flexible material
MARKETS
•
Commercial Telecom
•
Security and Defense
SPECIFICATIONS
TYPICAL PROPERTIES
Eccostock PP-2
Temperature Range °C (°F)
Dielectric Constant
Compression Strength, kPa @25%(@50%)
Compression Set (% of original thickness)
Hardness, Shore A
Loss Tangent
Density, g/cc (lbs/ft³)
Tensile Strength, kg/cm²
Elongation %
Thermal Conductivity, W/m-K
Water absorption, g/cm²(lb/ft²) of cut
surface
-80 to
85
(-112 to 185)
1.03
35 (100)
28
7
0.0001
0.032 (1.8 - 2.2)
2.5
220
0.040
0.04
ECCOSTOCK PP
Eccostock PP-4
-80
to 85
(-112 to 185)
1.06
70 (150)
16
15
0.0001
0.064 (3.6 – 4.4)
5.5
290
0.042
0.04
Data for design engineer guidance only. Observed performance varies in application.
Engineers are reminded to test the material in application.
APPLICATIONS
•
Eccostock PP can be used as radomes, blankets, and coverings where radar transparency is
desired. It can also be used in a variety of electrical and microwave applications.
•
With its low density and being closed cell, it finds uses in ocean buoyancy applications.
•
It has been used as a spacer in antenna applications.
AVAILABILITY
•
Eccostock PP is available in two densities: 2 lb/ft³(32 kg/m³) and 4 lb/ft³ (64 kg/m³).
It is designated as Eccostock PP-2 and Eccostock PP-4.
•
Standard sheets are available in 61 x 61 cm (24”x24”) and 122 x 152 cm (48” x 60”) sheets with
thickness of 0.32 cm and 0.64 cm (1/8” and 1/4”).
Eccostock PP-4 also with thickness of 0.16 cm (1/16”).
•
Other sheet sizes are available on special order.
Americas: +1.866.928.8181
Europe: +49.(0)8031.2460.0
Asia: +86.755.2714.1166
www.lairdtech.com
RFP-DS-PP 112515
A
ny information furnished by Laird Technologies, Inc. and its agents is believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use and application of Laird Technologies materials rests with the end user. Laird
Technologies makes no warranties as to the fitness, merchantability, suitability or non- infringement of any Laird Technologies materials or products for any specific or general uses. Laird Technologies shall not be liable for incidental or consequential damages of any
kind. All Laird Technologies products are sold pursuant to the Laird Technologies’ Terms and Conditions of sale in effect from time to time, a copy of which will be furnished upon request. © Copyright 2015 Laird Technologies, Inc. All Rights Reserved. Laird, Laird
Technologies, the Laird Technologies Logo, and other marks are trademarks or registered trademarks of Laird Technologies, Inc. or an affiliate company thereof. Other product or service names may be the property of third parties. Nothing herein provides a license
under any Laird Technologies or any third party intellectual property rights.
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