Parker Chomerics CHO-FORM 5531 EMI Shielding Material

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Parker Chomerics CHO-FORM 5531 EMI Shielding Material
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE); Silicone
Material Notes:	One component, moisture cure, form-in-place EMI gasketing material. This electrically conductive formulation contains silver-plated copper particles dispersed in a silicone elastomer. It is designed to be robotically dispensed using high pressure dispense equipment. Information provided by Chomerics
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Physical Properties	Metric	English	Comments

Specific Gravity	3.20 g/cc	3.20 g/cc	ASTM D792
Deformation	10 %	10 %	4 N/cm
	20 %	20 %	8 N/cm
	30 %	30 %	15 N/cm
	40 %	40 %	28 N/cm
	50 %	50 %	52 N/cm

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	35	35	ASTM D2240
Tensile Strength at Break	>= 0.517 MPa	>= 75.0 psi	ASTM D412
Compression Set	40 %	40 %	ASTM D395 Method B 22 hrs 85°C
	40 % @Temperature 85.0 °C, Time 79200 sec	40 % @Temperature 185 °F, Time 22.0 hour	ASTM D395 Method B

Electrical Properties	Metric	English	Comments
Volume Resistivity	0.0030 ohm-cm	0.0030 ohm-cm	Initial; Chomerics MAT-1002
	0.0040 ohm-cm	0.0040 ohm-cm	Aged; Chomerics MAT-1002
Shielding Effectiveness	52 dB @Frequency 1e+10 Hz	52 dB @Frequency 1e+10 Hz	CHO-TP08
	55 dB @Frequency 2.00e+9 Hz	55 dB @Frequency 2.00e+9 Hz	CHO-TP08
	65 dB @Frequency 6.00e+9 Hz	65 dB @Frequency 6.00e+9 Hz	CHO-TP08
	67 dB @Frequency 1e+9 Hz	67 dB @Frequency 1e+9 Hz	CHO-TP08
	71 dB @Frequency 2.00e+8 Hz	71 dB @Frequency 2.00e+8 Hz	CHO-TP08

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	85.0 °C	185 °F

Processing Properties	Metric	English	Comments
Extrusion Rate	5.50 g/min	5.50 g/min
Cure Time	240 min @Temperature 22.0 °C	4.00 hour @Temperature 71.6 °F	50% RH; Handling Time
	2880 min @Temperature 22.0 °C	48.0 hour @Temperature 71.6 °F	50% RH; Full Cure
Tack-Free Time	18.0 min @Temperature 22.0 °C	0.300 hour @Temperature 71.6 °F	50% RH

Descriptive Properties
Cure Mechanism	Moisture
Filler	Ag/Cu
Resin	One Part Silicone
Time for QC Measurements	8 hrs		Electrical Resistance and Adhesion @ 22°C 50% RH

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PCHOME087 / 28309

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