Submit Quote
Acrylic Conformal Coating | MS-477C
$95.93 – $257.80
Miller-Stephesons’ Acrylic Conformal Coating offers superior toughness and abrasion resistance, excellent dielectric properties, fungal resistance, and moisture and environmental protection. Our formulation is 100% non-flammable. Printed circuit boards covered with acrylic coatings are repairable. Simply heat the coating with a soldering iron to remove the components. MS-477C, the bulk liquid version will cover 91 sq. ft. per gallon at a 2 mil. thickness when applied via dip, brush, or spray
Acrylic Conformal Coating | MS-477C
Miller-Stepheson Acrylic Conformal Coating MS-477C offers superior toughness and abrasion resistance, excellent dielectric properties, fungal resistance, and moisture and environmental protection. Our formulation is 100% non-flammable. Printed circuit boards covered with acrylic coatings are repairable. Simply heat the coating with a soldering iron to remove the components.
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. Printed circuit boards covered with acrylic conformal coatings are repairable. Simply heat the coating with a soldering iron to remove the components. Drying and curing of acrylic coating depends upon evaporation of the solvent. Air dry coated boards for 30 minutes at 77°F/25°C to remove solvents before curing in oven or applying additional coats. The recommended cure time is 45 minutes at 167°F/75°C. The alternate cure is 24 hours at 77°F/25°C. Acrylic coating will be tack-free in one hour, semi-hard in four hours, and fully cured in 24 hours. Deaeration is not recommended.
MS-477C Acrylic Conformal Coating is probably the easiest coating to remove and repair. The coating can be removed completely or locally by using specifically designed stripping chemistries. The board can then be re-coated completely of just in area of the repair. By being electrically insulating, it maintains long-term surface insulation resistance (SIR) levels and thus ensures the operational integrity of the assembly. It also provides a barrier to air-borne 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
For Widespread Use Across Product Lines: Notwithstanding any express or implied indication to the contrary, product information provided on or via this website is supplied upon the condition that the persons receiving such information will make their own, independent determination as to a given product’s suitability for any contemplated purposes prior to use. In no event will Miller-Stephenson be responsible for damages of any nature whatsoever resulting from the use of, or reliance upon, information provided, directly or indirectly, on this website in relation to any product and/or application.
Cured Electrical Properties
| Dielectric Strength, volts/mil | 2000 |
| Dielectric Constant @ 100 kHz (77°F/25°C) | 2.29 |
| Dissipation Factor@ 100 kHz (77°F/25°C) | 0.012 |
| Volume Resistivity, volts/mil @ (77°F/25°C) | 1.04×10(16) |
Cured Physical Properties (per MIL-I-46058C)
Operating Temperature: -67°F/-55°C to 230°F/110°C
Appearance: No blistering, wrinkling, cracking or peeling of film or discoloration of printed conductors or substrate after thermal shock or moisture resistance testing.
Flexibility: No cracking or crazing of film in bending over a 1/8″ diameter mandrel.
Fungus Resistance: Non-nutrient per ASTM G21.
Fluorescent: when viewed with ultraviolet light.
For Widespread Use Across Product Lines: Notwithstanding any express or implied indication to the contrary, product information provided on or via this website is supplied upon the condition that the persons receiving such information will make their own, independent determination as to a given product’s suitability for any contemplated purposes prior to use. In no event will Miller-Stephenson be responsible for damages of any nature whatsoever resulting from the use of, or reliance upon, information provided, directly or indirectly, on this website in relation to any product and/or application.
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Bulk Sizes | Quart, 1 Gallon |
The recommended cure time is 45 minutes at 167°F/75°C. The alternate cure is 24 hours at 77°F/25°C. Acrylic coating will be tack free in one hour, semi-hard in four hours, and fully cured in 24 hours. Deaeration is not recommended.
For Widespread Use Across Product Lines: Notwithstanding any express or implied indication to the contrary, product information provided on or via this website is supplied upon the condition that the persons receiving such information will make their own, independent determination as to a given product’s suitability for any contemplated purposes prior to use. In no event will Miller-Stephenson be responsible for damages of any nature whatsoever resulting from the use of, or reliance upon, information provided, directly or indirectly, on this website in relation to any product and/or application.
Quart, Gallon, 5 Gallon, 55 Gallon drum
For Widespread Use Across Product Lines: Notwithstanding any express or implied indication to the contrary, product information provided on or via this website is supplied upon the condition that the persons receiving such information will make their own, independent determination as to a given product’s suitability for any contemplated purposes prior to use. In no event will Miller-Stephenson be responsible for damages of any nature whatsoever resulting from the use of, or reliance upon, information provided, directly or indirectly, on this website in relation to any product and/or application.