MG Chemicals 422 5 - Epoxy Conformal Coating

Chemical Family: Epoxy & Epoxy Derivatives

4225 Conformal Coating Epoxy4225 is a 2-part epoxy conformal coating. It cures to a durable, tough, semi-flexible coating with an excellent finish. 4225 protects against harsh chemicals, humidity, corrosion, oil, dirt, thermal shock, and abrasion. It also prevents high voltage arcing, short circuits, and static discharges. 4225 is a promising choice where extreme physical and chemical resistance are required.

Product families

Ready-to-Use Products — Paints & Coatings

Protective Coatings

Other characteristics

Features: Abrasion Resistant, Anti-Static, Arc Resistant, Chemical Resistant, Corrosion Resistant, Durable, Excellent Dirt Pick-up Resistance, Excellent Toughness, Good Smoothness, Humidity Resistant, Improved Flexibility, Oil Resistant, Prevents Short Circuits, Thermal Shock Resistant
Product Type: 2K (2 component) Coating, Conformal Coating, Epoxy Coating; 2K (2 component) Coating; Conformal Coating; Epoxy Coating
Application Method: Spray
Shelf Life: 2 Years
Cure: Air Dry
Heat Cure
Technology: Ready-to-Use Products
Key Attributes: Certified IPC-CC-830C; 2:1 mix ratio; Ready to spray; Excellent corrosion and chemical resistance; HAPS Free; Fluoresces under UV-A light; Suitable for use with selective coating equipment
Packaging Type: Cans
Labeling Claims: HAPs-free
Application Methods: Spray
Temperature Range: Store between -5 and 40 ˚C in a in a dry area, away from sunlight .
Chemical Inventories: TSCA (USA)
Application Instructions: Recommended Preparation; Clean the substrate with Isopropyl Alcohol, MG #824, so the surface is free of oils, dust, and other residues.; Mixing; Stir contents of the part A and part B container thoroughly. Measure 2 parts of A and 1 part of B by volume. Pour both parts into a mixing container while stirring. Ensure all contents are transferred. Thoroughly mix parts A and B together.; Brush; 4225 can be applied by brush for rework or touch-ups. Thinning is not required for most brush applications. Desired coating thickness can be achieved in a single application. Applied coating can be cured immediately.; 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:; Dip Coat; Use a Ford or Zahn cup to monitor the viscosity of the coating, as the solvent will evaporate over time.; Selective Coating; For higher volume applications, coating can be applied via selective coating equipment. A fluid nozzle ranging from 0.5 mm to 1.0 mm diameter and 5–10 psi fluid pressure is recommended depending on nozzle size. Thin the coating to adjust viscosity to the level appropriate for the valve being used.; Cure Instructions; The product will cure at room temperature after 48 hours. After letting sit for 7 hours, cure the coating in an oven at one of these time/temperature options:; Clean-up; Discard unused mixed epoxy and clean spray system and equipment with MEK or MG #434 Acetone.
Certifications and Compliance: Clean Air Act (CAA) Certified; ISO 9001; RoHS Compliant; Waste Electrical & Electronic Equipment Directive (WEEE)
Ready to Use Product Features: Abrasion Resistant
Anti-Static
Arc Resistant
Chemical Resistant
Corrosion Resistant
Durable
Excellent Dirt Pick-up Resistance
Excellent Toughness

Technical data

Table 1 of 4

1 row

Characteristic	Value	Unit
Density	0.95	g/mL

Table 2 of 4

2 rows

Characteristic	Value	Unit
Viscosity (at 25 ˚C)	20	cP
Calculated VOC	698	g/L

Table 3 of 4

9 rows

Characteristic	Value	Unit
Resistivity	1.8 x 10¹²	Ω·cm
Dielectric Strength	566	V/mil
Dielectric Withstand Voltage	min. 1500	V
Insulation Resistance	1 x 10¹²	Ω
Moisture Insulation Resistance	1 x 10¹²	Ω
Glass Transition Temperature (Tg)	42	˚C
CTE Prior Tg	210	ppm/˚C
CTE After Tg	245	ppm/˚C
Service Temperature Range	-40 to 140	˚C

Table 4 of 4