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Urethane Conformal Coatings | MS-470C

Urethane Conformal Coatings | MS-470C

MS-470C offers 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. Urethanes are much easier to be rework than epoxy coatings.

  • Superior toughness and abrasion resistance
  • Reworkable and room temperature cure
  • Solvent and discoloration resistant
  • Fluorescent under UV light
  • No cracking or crazing with vibration
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Urethane Conformal Coatings | MS-470C

Superior Toughness, Abrasion Resistance, and Chemical Stability

Miller-Stephenson’s MS-470C 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.

Benefits of MS-470C Urethane Conformal Coating

  • Tough, Durable Urethane Coating
  • Reworkable and room temperature cure
  • Solvent and discoloration resistant
  • Fluorescent under UV light
  • No cracking or crazing with vibration

Polyurethane coatings are available as either aerosol or bulk formulations. Both formulations provide excellent humidity resistance and far greater chemical resistance than Acrylic coatings. These Spray Conformal Coating are Single component Polyurethanes, while easy to apply, enjoy long pot life but sometimes require very lengthy cure cycles to achieve full or optimum cure. 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 Urethane Conformal Coatings | MS-470C 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. MS-470C will cover 8.6 square feet at a 2-mil thickness per 14-oz. aerosol can.  MS-472C, the bulk liquid version of the product, is available in quarts and gallons for dip, brush, or spray applications and will cover 120 square feet per gallon at a 2-mil thickness. Printed circuit boards or electronics covered with urethane coating are repairable.  Simply heat the coating with a soldering iron to remove the components.

MS-470C 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/mil1200
Dielectric Constant @ 10^5 Hz4.2
Dissipation Factor @ 10^5 Hz0.01
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.

MS-470C TDS

MS-470C TDS

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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.