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Chemically Resistant adhesives

Parker Chomerics PREMIER™ PEI-140 High Temperature Conductive Plastic for EMI Shielding
Categories: Polymer

Material Notes: PEI-140 can provide up to a 65% cost reduction by eliminating secondary operations such as assembly, machining, painting/plating and the logistics that accompany these processes. The shielding effectiveness, high temperature performance, low smoke generation, chemical resistance and UL 94V-0 flammability rating combined with a weight savings of 50-75%, make using PEI-140 for aerospace applications economically viable. PEI-140 specific gravity is 40% less than aluminum and 80% less than steel. PEI-140 offers an opportunity to reduce the weight of airborne electronic housings by up to 75%. PEI-140 housings will not only cost less themselves, but also improve aircraft operating cost through weight reduction.

Information provided by Chomerics

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Physical PropertiesMetricEnglishComments
Specific Gravity 1.61 g/cc1.61 g/ccASTM D792
Linear Mold Shrinkage 0.0065 cm/cm
@Thickness 3.17 mm
0.0065 in/in
@Thickness 0.125 in
ASTM D995
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength at Break 103 MPa15000 psiASTM D638
Elongation at Break 4.3 %4.3 %ASTM D638
Flexural Strength 138 MPa20000 psiASTM D790
Flexural Modulus 8.20 GPa1190 ksiASTM D790
Izod Impact, Notched 0.600 J/cm1.12 ft-lb/inASTM D412
Izod Impact, Unnotched 2.10 J/cm3.93 ft-lb/inASTM D412
Impact 0.84
@Temperature 23.0 °C
0.84
@Temperature 73.4 °F
[ft-lb/in], Charpy; ASTM D6110-05a
 
Electrical PropertiesMetricEnglishComments
Surface Resistance 0.38 ohm0.38 ohm
Surface Resistivity per Square 0.45 ohm0.45 ohmMIL-DTL-83528C
Shielding Effectiveness  60 dB
@Frequency 3.00e+7 Hz
60 dB
@Frequency 3.00e+7 Hz
ASTM D4935
 64 dB
@Frequency 1e+8 Hz
64 dB
@Frequency 1e+8 Hz
ASTM D4935
 85 dB
@Frequency 1e+9 Hz
85 dB
@Frequency 1e+9 Hz
ASTM D4935
 72 dB
@Thickness 1.80 mm,
Frequency 3.0e+7 - 1.00e+9 Hz
72 dB
@Thickness 0.0709 in,
Frequency 3.0e+7 - 1.00e+9 Hz
ASTM D4935
 80 dB
@Thickness 1.80 mm,
Frequency 8.00e+8 - 1.80e+10 Hz
80 dB
@Thickness 0.0709 in,
Frequency 8.00e+8 - 1.80e+10 Hz
IEEE 299
 
Thermal PropertiesMetricEnglishComments
Thermal Conductivity 0.710 W/m-K4.93 BTU-in/hr-ft²-°FASTM D5470
Deflection Temperature at 1.8 MPa (264 psi) 363 °C685 °FASTM D648
Flammability, UL94 V-0
@Thickness 1.80 mm
V-0
@Thickness 0.0709 in
Smoke Density <= 110
@Thickness 3.00 mm,
Time 240 sec
<= 110
@Thickness 0.118 in,
Time 0.0667 hour
NBS Ds; BSS 7238/7239
Oxygen Index 41 %41 %Limited; ASTM D2863
 
Processing PropertiesMetricEnglishComments
Rear Barrel Temperature 360 - 385 °C680 - 725 °F
Front Barrel Temperature 370 - 395 °C698 - 743 °F
Nozzle Temperature 370 - 395 °C698 - 743 °F
Melt Temperature 370 - 395 °C698 - 743 °F
Mold Temperature 90.0 - 115 °C194 - 239 °F
Dry Time  5 - 7 hour
@Temperature 150 - 160 °C
5 - 7 hour
@Temperature 302 - 320 °F
Typical
 24.0 hour
@Temperature 150 - 160 °C
24.0 hour
@Temperature 302 - 320 °F
Maximum
Moisture Content 0.020 %0.020 %Suggested Maximum
Back Pressure 0.517 - 0.862 MPa75.0 - 125 psi
Clamp Pressure 55.0 - 80.0 MPa7980 - 11600 psi[MPa/cm2]
Cushion 1.02 - 1.27 cm0.400 - 0.500 in
Screw Speed 95 - 130 rpm
@Diameter 25.4 mm
95 - 130 rpm
@Diameter 1.00 in
760 - 1000 cm/min

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PCHOME334 / 131044

Chemically Resistant adhesives

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