Knowde Enhanced TDS
Identification & Functionality
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Key Attributes
- Meets UL EIS Standards
- Excellent finish - tough, flexible, glossy, and durable transparent coat
- Good adhesion
- Excellent moisture resistance
- Brush
- 4226 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.
Applications & Uses
- Applications
- Application Method
- Dip Coat
Due to the dual curing nature of this coating, it is important to control exposure to light and moisture to prevent premature curing.
- Hang the PCB on a dipping arm.
- Slowly lower the PCB into a tank and leave immersed in the coating for 2 min to allow penetration.
- Slowly withdraw the PCB from the tank at a rate of approximately 6" per minute.
- 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::
Inlet Air flow Air cap 20–40 psi 10–15 SCFM 8–10 psi - Dilute 1-part coating to 1-part thinner (MG #4352 Thinner 2). Adjust ratio if required.
- Stir the coating gently, but thoroughly.
- Spray a test pattern to ensure good flow quality.
- Tilt the board at 45° and spray a thin even coat from a distance of 20–25 cm (8–10 in). Use spray-andrelease strokes with an even motion to avoid paint buildup in one spot. Start and end each stroke off the surface.
- Wait 5 min between coats to avoid trapping solvent.
- Rotate the board 90° and spray again to ensure good coverage.
- Apply additional coats until desired thickness is achieved (go to step 3).
- Let dry for 15 min at room temperature before applying heat cure.
- Recommended Preparation
- Clean the substrate with Isopropyl Alcohol, MG #824, so the surface is free of oils, dust, and other residues.
- Recommended Thinner
- When thinning is required, use MG #4354 Thinner 4.
Properties
- Physical Form
- Typical Properties
- Cured Properties
- Uncured Properties
- Cure Instructions
The product will not cure at room temperature. After letting sit for 15 minutes, cure the coating in an oven at one of these time/temperature options:
Temperature 80 °C 100 °C Time 1 hours 30 minutes
| Value | Units | Test Method / Conditions | |
| Recommended Film Thickness | 25-38 | μm | — |
| Theoretical Coverage at 25 mm | 43 000 | cm2/L | — |
| Minimum Recoat Time | 4 | — | — |
| Dry Time to Handle | 20 | minute | — |
| Value | Units | Test Method / Conditions | |
| Service Temperature Range | -40 to 180 | °C | — |
| Dielectric Strength (wet) | 0 | V/mil | — |
| Dielectric Strength (dry) | 100 | V/mil | — |
| Insulation Class (B) | 130 | — | — |
| Insulation Class (F) | 150 | — | — |
| Insulation Class (H) | 180 | — | — |
| Value | Units | Test Method / Conditions | |
| Calculated VOC | 604 | g/L | — |
| Density | 0.93 | g/mL | — |
| Percent Solids | 35 | % | — |
| Viscosity (at 25˚C) | 77 | cP | — |
Regulatory & Compliance
Technical Details & Test Data
- Clean-up
- Clean spray system and equipment with MEK or acetone, MG # 434.
Packaging & Availability
- Available Packaging
Cat. No. Packaging Net Volume Net Weight 4226-55ML Bottle 55 mL 50.9 g 4226-1L Bottle 945 mL 875 kg
Storage & Handling
- Shelf Life
- 5 Years
- Storage and Handling
- Store between -5 and 25 ˚C in a in a dry area, away from sunlight (see SDS).