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Master Bond adhesives

Parker Chomerics CHOFORM® 5550 Conductive Form-in-Place Gasket
Categories: Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)

Material Notes: Description: A range of conductive particle technologies combined with thermoset and RTV silicone systems provide a material selection for most opportunities. Multiple filler grades balance material cost versus performance and can provide low cost alternatives for less demanding applications. Chomerics corrosion resistant materials inherently provide protection against galvanic activity. They may eliminate the need for nickel or tin plating and or secondary environmental gaskets. Chomerics general purpose materials exhibit excellent electrical and mechanical properties on metallic and shield plastic housing. Chomerics silver filled materials provide high shielding and conductivity critical for inter-compartmental shields. CHOFORM delivers a greater deflection range, lower deflection forces & improved reliability.

Features: Lower deflection forces and a broad deflection range, Corrosion resistant materials can eliminate plating or secondary environmental gasket, Good adhesion to many substrates, Supply chain management providing ongoing logistics, Low cost and rapid prototyping and Soft Ni/C, Corrosion Resistant.

Information provided by Chomerics

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Physical PropertiesMetricEnglishComments
Specific Gravity 2.20 g/cc2.20 g/ccASTM D395
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 5555ASTM D2240
Tensile Strength 1.21 MPa175 psiASTM D412
Elongation at Break 175 %175 %ASTM D412
Tensile Impact 17.3 J/cm32.4 ft-lb/inForce Deflection at 30%; ASTM D575 Modified
Compression Set 25 %
@Temperature 70.0 °C,
Time 79200 sec
25 %
@Temperature 158 °F,
Time 22.0 hour
ASTM D395, Method B
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 0.035 ohm-cm0.035 ohm-cmChomerics MAT-1002
Shielding Effectiveness <= 65 dB<= 65 dBModified IEEE-299
 
Thermal PropertiesMetricEnglishComments
Maximum Service Temperature, Air 125 °C257 °F
Flammability, UL94 V-0V-0
 
Processing PropertiesMetricEnglishComments
Cure Time  30.0 min
@Temperature 150 °C
0.500 hour
@Temperature 302 °F
Handling Time
 30.0 min
@Temperature 150 °C
0.500 hour
@Temperature 302 °F
Full Cure
Tack-Free Time 30.0 min
@Temperature 150 °C
0.500 hour
@Temperature 302 °F
Shelf Life 6.00 Month
@Temperature -12.0 - -8.00 °C
6.00 Month
@Temperature 10.4 - 17.6 °F
Chomerics
 
Descriptive Properties
Adhesion12 N/cmTrivalent Chromate Coating on Al, Chomerics WI 1038
BinderSilicone
Corrosion Resistance20Galvanic Resistance Against Aluminum
Cure SystemThermal
FillerNi/C
Number of Components1
Resin SystemSilicone

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.

PCHOME209 / 130919

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