Technical Data Sheet
Premium Polyurethane Conformal Coating
Description
4223F is a one-part, heat curing, UL 746E certified, thermoset polyurethane conformal coating. It cures
to a durable, flexible, scratch resistant, and smooth finish. It is easy to apply and can be handled in
15 minutes. It cures in only 2 hours at 100 °C (212 °F). It may be removed with appropriate strippers, or
soldered through for repair or rework.
4223F protects printed circuit boards in chemically challenging environments. It provides strong
protection against aggressive chemicals, corrosion, moisture, fungus, dirt, dust, thermal shock, abrasion,
short circuit, high-voltage arcing, and static discharge.
4223F Aerosol
Features and Benefits
•
Certified UL 746E (File#
E203094)
for outdoor use
•
Qualified to IPC-CC-830B by Pacific Testing Laboratories
•
Excellent corrosion resistance—tested in both salt spray and hydrogen sulfide environments with little
signs of oxidation or tarnish buildup
•
Xylene free
•
Fluoresces under UV-A light (blacklight)
•
Isocyanate-free
•
Suitable for use with robotic coating equipment
Usage Parameters
Properties
Tack free
Recoat time
Full cure @80 °C [176 °F]
Full cure @100 °C [212 °F]
Shelf life
Theoretical coverage per 312 g can
a)
Value
15 min
3 min
16 h
2h
3y
≤14
000 cm
2
[≤2 200 in
2
]
a)
Estimate based on a coat thickness of 25 µm [1.0 mil] and 50% transfer efficiency.
ISO 9001:2015 Quality Management System. Burlington, Ontario, Canada SAI Global File: 004008
Date: 15 January 2019 / Ver. 2.01
Page 1
4223F Aerosol
Temperature Ranges
Properties
Constant service temperature
Storage temperature limits
Value
-65 to 125 °C [-85 to 257 °F]
-5 to 40 °C [23 to 104 °F]
Cured Properties
Physical Properties
Color
Solderability
Chemical resistance
Weather resistance
Fungus resistance
Flexibility
Flammability
Glass transition temperature (T
g
)
CTE prior T
g
CTE after T
g
UV inspection absorption max
UV inspection fluorescence max
Method
Visual
—
—
—
IPC-TM-650 2.6.1.1
IPC-TM-650 2.4.5.1
Similar to file # E203094
Optical dilatometer
Optical dilatometer
Optical dilatometer
Absorption spectrum
Emission spectrum
Value
Clear, amber tint
Good
Excellent
Excellent
Passed
Passed
94 V-0
57 °C [135 °F]
130 ppm/°C [266 ppm/°F]
190 ppm/°C [374 ppm/°F]
375 nm (near UV)
437 nm (blue)
NOTE:
See Appendix A for UL 94 V-0 and IPC-CC-830B standards test results.
ISO 9001:2015 Quality Management System. Burlington, Ontario, Canada SAI Global File: 004008
Date: 15 January 2019 / Ver. 2.01
Page 2
4223F Aerosol
Cured Properties
Electrical Properties
Volume resistivity
Breakdown voltage @1.2 mil
Dielectric strength @1.2 mil
Dielectric withstand voltage
Insulation resistance (after 24 h)
Dielectric constant @60 Hz
@1 MHz
Dissipation factor @60 Hz
@1 MHz
Method
ASTM D 257
ASTM D 149
ASTM D 149
IPC-TM-650 Test 2.5.7.2
IPC-TM-650 Test 2.6.3.4
ASTM D 150-11
ASTM D 150-11
ASTM D 150-11
ASTM D 150-11
Value
3.5 × 10
13
Ω·cm
1 200 V [1.2 kV]
1 000 V/mil [0.04 kV/mm]
>1 500 V [>1.5 kV]
9 × 10
12
Ω
1.83
0.29
2.86
0.009
Mechanical Properties
Adhesion (ABS)
(PC)
(PVC)
(Polyamide)
(Glass)
(Copper)
(Aluminum)
(PC)
(FR4)
Pencil hardness (ABS)
Method
ASTM D 3359
ASTM D 3359
ASTM D 3359
ASTM D 3359
ASTM D 3359
ASTM D 3359
ASTM D 3359
ASTM D 3359
ASTM D 3359
ASTM D 3363
Value
TBD
HB, soft
NOTE:
See Appendix A for UL 94 V-0 and IPC-CC-830B standards test results.
ISO 9001:2015 Quality Management System. Burlington, Ontario, Canada SAI Global File: 004008
Date: 15 January 2019 / Ver. 2.01
Page 3
4223F Aerosol
Uncured Properties
Physical Properties
Odor
Viscosity @25 °C [77 °F]
Density
Flash point
Boiling point
Solids content (w/w)
Method
—
Brookfield SP1
ASTM D 1475
Closed cup
—
Calculated
Value
Mild petroleum
330 cP [0.330 Pa·s]
0.72 g/mL
-104 °C [-155 °F]
80 °C [176 °F]
45%
Compatibility
The 4223F adheres to most plastics and metals used to house printed circuit assemblies; however, it
is not compatible with contaminants like water, oil, or greasy flux residues that may affect adhesion. If
contamination is present, first clean the surface to be coated with MG Chemicals 824 Isopropyl alcohol.
Attention!
Do not use on thin plastics or plastics where you want to keep original surface. The product contains a
controlled amount of solvents designed to chemically etch plastic surfaces to help adhesion.
Storage
Store between -5 to 40 °C [23 to 104 °F] in a dry area, away from sunlight.
Health and Safety
Please see the 4223F-Aerosol Safety Data Sheet (SDS) for further details on transportation, storage,
handling, safety guidelines, and regulatory compliance.
ISO 9001:2015 Quality Management System. Burlington, Ontario, Canada SAI Global File: 004008
Date: 15 January 2019 / Ver. 2.01
Page 4
4223F Aerosol
Application Instructions
Spraying:
1.
Shake the can vigorously.
2.
Spray a test pattern to ensure good flow quality.
3.
At an approximate distance of 20–25 cm (8–10 in), tilt the board 45° from a vertical position and spray
a thin and even coat. Use spray-and-release strokes with an even motion to avoid excess paint in one
spot. Start and end each stroke off the surface.
4.
Wait 3 min before applying another coat to avoid trapping solvent.
5.
Rotate the board 90° and spray again to ensure good coverage.
6.
Apply other coats until desired thickness is achieved (go to step 3).
7.
Let dry for 3 min at room temperature before heat cure.
Clearing nozzle between use:
1.
Invert the can upside down.
2.
Hold button until clear propellant comes out. The propellant should clear in seconds.
Cure Instructions
Room temperature cure:
Do NOT cure at room temperature. This product will only cure at elevated temperatures.
Heat cure:
• Put in oven at 80 °C [176 °F] for 16 h.
—OR—
• Put in oven at 100 °C [212 °F] for 2 h.
Packaging and Supporting Products
Cat. No.
4223F-312G
4223F-1L
4223F-4L
4223F-20L
Packaging
Aerosol
Can
Can
Pail
Net Volume
430 mL [14.6 fl oz]
945 mL [1.99 pt]
3.78 L [3.99 qt]
18.9 L [4.99 gal]
Net Weight
312 g [11.0 oz]
841 g [1.85 lb]
3.36 kg [7.42 lb]
16.8 kg [37.1 lb]
Packaged Weight
Not available
1.10 kg [2.43 lb]
Not available
Not available
ISO 9001:2015 Quality Management System. Burlington, Ontario, Canada SAI Global File: 004008
Date: 15 January 2019 / Ver. 2.01
Page 5
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