Parker Chomerics CHO-SHIELD® 2056 Conductive Coating

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Parker Chomerics CHO-SHIELD® 2056 Conductive Coating
Categories:	Polymer; Adhesive; Thermoset
Material Notes:	CHO-SHIELD® 2054 silver-plated-copper filled commercial-grade coating proved high levels of EMI shielding effectiveness, abrasion resistance and excellent adhesion on a variety of materials used for electronic enclosures. Application: With their excellent leveling and uniformity, these coatings are compatible with all commercially available application technologies, including high volume/low pressure (HVLP) spray systems, and conventional propeller-agitated pressure pots. As low-settling compounds, they are ready for use after simple mixing in a paint shaker. They are supplied ready-to-spray, and don’t required additional thinning, although MEK can be used. Information provided by Chomerics
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Physical Properties	Original Value	Comments

Specific Gravity	0.900 - 1.30 g/cc
Volatile Organic Compounds (VOC) Content	750 g/l
Thickness	>= 0.984 mil	Recommended

Electrical Properties	Original Value	Comments
Surface Resistivity per Square	<= 0.030 ohm @Thickness 0.0250 mm
Shielding Effectiveness	55 dB @Frequency 2.00e+7 Hz	26 in. x 26 in. test panel; TP08 Modified
	77 dB @Frequency 1e+8 Hz	26 in. x 26 in. test panel; TP08 Modified
	83 dB @Frequency 1e+9 Hz	26 in. x 26 in. test panel; TP08 Modified
	88 dB @Frequency 1e+10 Hz	26 in. x 26 in. test panel; TP08 Modified
	90 dB @Frequency 2.00e+8 Hz	26 in. x 26 in. test panel; TP08 Modified
	92 dB @Frequency 4.00e+9 Hz	26 in. x 26 in. test panel; TP08 Modified

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	100 °C
Minimum Service Temperature, Air	-40.0 °C

Processing Properties	Original Value	Comments
Cure Time	5.00 min @Temperature 24.0 °C	Followed by 30 min @ 60°-71°C
	24.0 hour @Temperature 24.0 °C
Shelf Life	12.0 Month

Descriptive Properties
Consistency	Thin Fluid
Filler	Silver-Plated Copper and Pure Silver Flakes
Mix	1-part
Polymer	Acrylic
Theoretical Coverage	192 ft²/gal
Viscosity #2 Zahn Cup	14-19 sec	Suggested

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PCHOME140 / 28362

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