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Parker Chomerics CHO-SHIELD® 4998 Conductive Flexible Coating

Category Polymer , Adhesive
Manufacturer Parker Chomerics
Trade Name CHO-SHIELD®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Parker Chomerics CHO-SHIELD® 4998 Conductive Flexible Coating.pdf
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Material Notes:
Description: CHO-SHIELD® 4998 is a smooth, highly conductive flexible silver-filled polyurethane coating designed for military/aerospace airframe applications. Both coatings provide superior adhesion, excellent solvent rub and wear resistance, and are resistant against numerous operational and environmental fluids. CHO-SHIELD® 4498 can be applied to aluminum as well as non-conductive substrates and are designed to be used with primers and with external topcoat systems. CHO-SHIELD® 1091 can be used as a primer for ensuring improved performance on aluminum substrates.Information provided by Chomerics
Physical Properties Metric English Comments
Specific Gravity 2.10 g/cc
2.10 g/cc
Wet; ASTM D1475
Volatile Organic Compounds (VOC) Content 596 g/l
596 g/l
USEPA Method 24
Thickness 0.0760 - 0.102 microns
0.00299 - 0.00402 mil
Recommended Dry Film
Mechanical Properties Metric English Comments
Impact Test >= 102 J
>= 75.0 ft-lb
Intrusion; ASTM D2794
>= 102 J
>= 75.0 ft-lb
Extrusion; ASTM D2794
Taber Abrasion, mg/1000 Cycles 0.16
0.16
[mg/cycle], Wear Index; ASTM D4060
1000
1000
Wear Cycles per Mil; ASTM D4060
Thermal Properties Metric English Comments
Maximum Service Temperature, Air 85.0 °C
185 °F
Minimum Service Temperature, Air -40.0 °C
-40.0 °F
Electrical Properties Metric English Comments
Surface Resistivity per Square <= 0.075 ohm
<= 0.075 ohm
CEPS-0002
<= 0.075 ohm

@Temperature 22.2 °C,
Time 1.21e+6 sec
<= 0.075 ohm

@Temperature 72.0 °F,
Time 336 hour
MIL-T-5624 JP-8; CEPS-0002
<= 0.075 ohm

@Temperature 71.1 °C,
Time 605000 sec
<= 0.075 ohm

@Temperature 160 °F,
Time 168 hour
MIL-H-5606 Hydraulic Fluid; CEPS-0002
<= 0.075 ohm

@Temperature 71.1 °C,
Time 605000 sec
<= 0.075 ohm

@Temperature 160 °F,
Time 168 hour
MIL-L-7808 Lubrication Oil; CEPS-0002
<= 0.075 ohm

@Temperature 85.0 °C,
Time 1.21e+6 sec
<= 0.075 ohm

@Temperature 185 °F,
Time 336 hour
CEPS-0002
<= 0.075 ohm

@Temperature -40.0 °C,
Time 1.21e+6 sec
<= 0.075 ohm

@Temperature -40.0 °F,
Time 336 hour
CEPS-0002
<= 0.075 ohm

@Temperature 85.0 °C,
Time 2.59e+6 sec
<= 0.075 ohm

@Temperature 185 °F,
Time 720 hour
CEPS-0002
Shielding Effectiveness 85 dB

@Frequency 2.00e+8 - 1.00e+10 Hz
85 dB

@Frequency 2.00e+8 - 1.00e+10 Hz
Modified Chomerics TP-08
Processing Properties Metric English Comments
Cure Time 120 min

@Temperature 54.0 °C
2.00 hour

@Temperature 129 °F
at Standard Conditions + 2 hrs
1440 min

@Temperature 15.5 - 21.0 °C
24.0 hour

@Temperature 59.9 - 69.8 °F
40-60% RH
Pot Life 60 min
60 min
ASTM D4212
Shelf Life 6.00 Month
6.00 Month
From date of Manufacture
Descriptive Properties Value Comments
Adhesion 5B
ASTM D3359
Color Metallic Light Brown
Conical Bend =>32.0%
Cracking: No Evidence; ASTM D522 - Test Method A
Coverage 250 sq ft/gal
at 3.0 mil Dry Film Thickness; Typical; ASTM D2697
Cross Hatch Adhesion 5B
85°C for 14 days; ASTM D3359
5B
-40°C for 14 days; ASTM D3359
5B
85°C, 85% RH for 30 days; ASTM D3359
Filler Silver
Mandrel Bend >500%
ASTM D522 -Test Method B
Mix Ratio 100:18.30:1.39:20.57
A:B:C:D
Resin Polyurethane
Solvent Rub Resistance Pass
CHO-TM 95-40-6013
Pass
22.2°C for 14 days; MIL-T-JP-8; CHO-TM 95-40-6013
Pass
71.1°C for 14 days; MIL-H-5606 Hydraulic Fluid; CHO-TM 95-40-6013
Pass
71.1°C for 14 days; MIL-L-7808 Lubrication Oil; CHO-TM 95-40-6013
Visual Inspection Pass
85°C for 14 days; CHO-TM 95-40-6013
Pass
-40°C for 14 days; CHO-TM 95-40-6013
Pass
85°C, 85% RH for 30 days; CHO-TM 95-40-6013
Pass
22.2°C for 14 days; MIL-T-JP-8; CHO-TM 95-40-6013
Pass
71.1°C for 14 days; MIL-H-5606 Hydraulic Fluid; CHO-TM 95-40-6013
Pass
71.1°C for 14 days; MIL-L-7808 Lubrication Oil; CHO-TM 95-40-6013
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