MG Chemicals 422B – Silicone Modified Conformal Coating
Silicone Modified Conformal Coating 422B is a 1-part, acrylic-silicone blend conformal coating that cures to a durable, flexible and smooth finish. It is easy to apply and can be handled in only 8 minutes. It may be removed with appropriate strippers or soldered through for repair or rework. 422B is designed for applications where both high service temperature and flexibility are required. It puts minimum stress on components during thermal cycling, making it ideal for applications that involve a wide temperature range. It provides strong protection against moisture, corrosion, fungus, dirt, dust, thermal shock, short circuits, high-voltage arcing, and static discharge.
Properties
- Physical Form
- Liquid
Identification
Product families
Applications
- Electronics Coatings
- Printed Circuit Boards (PCBs)
Product Families
- Protective Coatings
Other characteristics
- Features
Anti-Static, Corrosion Resistant, Durable, Ease of Handling, Excellent Dirt Pick-up Resistance, Excellent Moisture Resistance, Flexible, Fungus Resistant, Good Smoothness, Thermal Shock Resistant, Wide Temperature Operating Range
- Product Type
- 1K (1 component) Coating, Conformal Coating
- 1K (1 component) Coating
- Conformal Coating
- Application Method
- Brush, Dip Coating, Spray
- Markets
- Electrical & Electronics
- Dip Coat
Use a Ford or Zahn cup to monitor the viscosity of the coating, as the solvent will evaporate over time.
- Certified
- UL 94 V-0 (File# E203094)
- Shelf LIfe
- 5 Years
- Technology
- Ready-to-Use Products
- Packaging Type
- Cans
- Pails
- Manual Spray Guns
Use a standard fluid nozzle gun with a minimum tip diameter of 0.8–1.0 mm. The settings listed below are recommendations; however, performance will vary with different brands:
- Selective Coating
For higher volume applications, coating can be applied via selective coating equipment. The settings listed below are recommendations and performance will vary with different brands.
- Application Methods
- Brush
- Dip Coating
- Spray
- Benefits and Features
Maximum service temperature of 200 °C; Fluoresces under UV-A light; Suitable for use with selective coating equipment; Excellent corrosion resistance
- Chemical Inventories
- AICS (Australia)
- DSL (Canada)
- EINECS (EU)
- ENCS (Japan)
- IECSC (China)
- INSQ (Mexico)
- KECI (Korea)
- NCI (Vietnam)
- Ready to Use Product Features
- Anti-Static
- Corrosion Resistant
- Durable
- Ease of Handling
- Excellent Dirt Pick-up Resistance
- Excellent Moisture Resistance
- Flexible
- Fungus Resistant
Technical data
Table 1 of 3
5 rows| Characteristic | Value | Unit |
|---|---|---|
| Dry Time To Handle (1 coat) | 8 | minute |
| Dry Time to Handle (2 coats) | 15 | minute |
| Minimum Recoat Time | 3 | minute |
| Recommended Film Thickness | 25-75 | μm |
| Theoretical Coverage (at 25 μm) | 70000 | cm2/L |
Table 2 of 3
8 rows| Characteristic | Value | Unit |
|---|---|---|
| CTE (After Tg) | 275 | ppm/˚C |
| Dielectric Strength | 1056 | V/mil |
| Dielectric Withstand Voltage | min. 1500 | V |
| Dissipation Factor (at 1 MHz) | 0.012 | — |
| Dielectric Constant (at 1 MHz) | 1.99 | — |
| Glass Transition Temperature (Tg) | 29 | ˚C |
| Resistivity | 1.2 x 10¹⁵ | Ω·cm |
| Service Temperature Range | -40 to 200 | ˚C |
Table 3 of 3
4 rows| Characteristic | Value | Unit |
|---|---|---|
| Calculated VOC | 289 | g/L |
| Density | 0.9 | g/mL |
| Solid Content | 28 | % |
| Viscosity (at 25 ˚C) | 10 | cP |
