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Urethane Conformal Coatings | ShieldSys 472X
ShieldSys 472X offer superior printed circuit board (PCB) protection with a tough and solvent resistant Urethane conformal coating. The cured coating is repairable and can be easily applied via brush, dip or spray. Ideal for the assemblies require superior long-term protection or required to meet a MIL-Spec.
- Superior toughness and abrasion resistance
- Reworkable and room temperature cure
- Solvent and discoloration resistant
- Fluorescent under UV light
- Base resin meets MIL-I-46058C Type UR
Urethane Conformal Coatings | ShieldSys™ 472X
Superior Toughness, Abrasion and Chemical Resistance,
Miller-Stephenson ShieldSys™ 472X Urethane Conformal Coatings offer superior toughness and abrasion resistance and excellent protection from humidity and organic solvents. Urethane resins are very hard and resistant to mechanical wear, their hardness is second only to epoxy conformal coatings. However urethanes are much easier to be reworked than an epoxy. Miller-Stephenson’s Urethane Conformal Coatings proved excellent coverage, reliability and ease of use. ShieldSys™ 472X offers excellent levelling, rapid dry times, and predictable film build.
Benefits of ShieldSys™ 4722X Urethane Conformal Coating
- Tough, Durable Urethane Coating
- Base resin meets MIL-I-46058C Type UR
- IPC-CC-830 qualified and UL94 V-0
- Reworkable and room temperature cure
- Solvent and discoloration resistant
- Fluorescent under UV light
- No cracking or crazing with vibration
Advantages of Urethane Conformal Coatings – Advanced PCB Coatings
ShieldSys™ urethane conformal coatings are available as either aerosol or bulk formulations. Both formulations provide excellent humidity resistance and far greater chemical resistance than Acrylic coatings. ShieldSys 472X is easy to apply with a long pot life but does require longer to reach optimal cure properties. The cure cycle can be accelerated by the application of heat typically reducing cure times to less than 4-5 hours at 50% humidity.
When applying ShieldSys™ 472X the cleanliness of the substrate is of extreme importance for the successful application of a conformal coating. Surfaces must be free of moisture, dirt, wax, grease, flux residues and all other contaminants. Contamination under the coating could cause problems that may lead to assembly failures. Product features are:
- Available in quarts, gallons and 5 gallon containers
- Can be applied by brush, dip or spray
- Comes up to 150-170 sq ft per gallon at 2 mil thickness
- ShieldSys 472X is repairable and can be soldered through
ShieldSys™ 472X Urethane Conformal Coatings – Ease of application, Room Temperature Cure, Excellent self levelling
Urethane Conformal Coatings provide a barrier to airborne contaminants from the operating environment, such as salt-spray, thus preventing corrosion. Some typical application examples include high-reliability defense, automotive and aerospace, where coatings are used to protect against various combinations of moisture, aggressive chemicals and vapours, salt sprays, large temperature variations, mechanical vibration, and even organic attack (e.g. fungus). The protective nature of conformal coatings also means that they not only protect, but also serve to enhance product reliability and thereby reduce the potential cost and damaging effects of early field failures.
For help in choosing the correct conformal coating for your application see our article section
More than a world-class materials supplier, Miller-Stephenson is an expert and dedicated collaborator. If our product finder cannot identify an off the shelf solution that meets your precise specifications or if you are looking for application expertise and support please contact us.
The recommendation made here with and the information set forth with respect to the performance or use of our products are believed, but not warranted to be accurate. The products discussed are sold without warranty, as to fitness or performance, express or implied and upon condition that purchasers shall make their own test to determine suitability of such products for their particular purposes. Likewise, statements concerning the possible uses of our products are not intended as recommendations to use our products in the infringement of any patent.
Cure Electrical Properties
| Dielectric Strength, volts/mil | 1200 |
| Dielectric Constant @ 10^5 Hz | 4.2 |
| Dissipation Factor @ 10^5 Hz | 0.01 |
| Volume Resistivity (ohm) | 2 x 10^13 |
Cured Physical Properties
Operating Temperature: -67°F/-55°C to 230F/110C
Appearance: No blistering, wrinkling, cracking, or peeling of film, or substrate after thermal shock, or after moisture resistance testing.
Flexibility: No cracking or crazing of film on bending over a 1/8″ diameter mandrel.
Fungus Resistance: Non-nutrient per ASTM G21
Fluorescent when viewed with ultraviolet light.
The recommendation made here with and the information set forth with respect to the performance or use of our products are believed, but not warranted to be accurate. The products discussed are sold without warranty, as to fitness or performance, express or implied and upon condition that purchasers shall make their own test to determine suitability of such products for their particular purposes. Likewise, statements concerning the possible uses of our products are not intended as recommendations to use our products in the infringement of any patent.
Allow 48 hours minimum to reach room temperature before using cans stored or received during cold weather.
Post Application: Air dry for 30 minutes. Repeat up to 2-3 coats. The recommended cure schedule is 2 hours at 140°F/60°C and a relative humidity of 30% to 50%. If the humidity level is less than 30%, place an open container of distilled water in the oven and allow to equilibrate. The alternate cure, at room temperature and a relative humidity of 30% to 50%, will be tack free in one to four hours, semi-hard in one day, and fully cured in seven days.
The recommendation made here with and the information set forth with respect to the performance or use of our products are believed, but not warranted to be accurate. The products discussed are sold without warranty, as to fitness or performance, express or implied and upon condition that purchasers shall make their own test to determine suitability of such products for their particular purposes. Likewise, statements concerning the possible uses of our products are not intended as recommendations to use our products in the infringement of any patent.
14 oz Aerosol
The recommendation made here with and the information set forth with respect to the performance or use of our products are believed, but not warranted to be accurate. The products discussed are sold without warranty, as to fitness or performance, express or implied and upon condition that purchasers shall make their own test to determine suitability of such products for their particular purposes. Likewise, statements concerning the possible uses of our products are not intended as recommendations to use our products in the infringement of any patent.