DOWSIL™ 1-2577 Conformal Coating is a one-part, solvent-borne silicone resin designed to protect printed circuit boards (PCBs) and electronic assemblies. It cures to form a tough, elastoplastic, and abrasion-resistant surface, offering excellent dielectric properties and environmental protection.?
Product Overview
Composition : One-part, translucent silicone resin solution.?
Cure Mechanism : Moisture-cure at room temperature; optional mild heat acceleration after solvent evaporation.?
Appearance : Translucent (clear) after curing.?
Viscosity : Approximately 950 mPa=s.?
Tack-Free Time : Approximately 7 minutes at 25°C and 50% RH.?
Durometer Hardness : Shore A 80.?
Dielectric Strength : 400 V/mil (16 kV/mm).?
Volume Resistivity : 5 × 10¹³ ohm=cm.?
Key Features
Abrasion Resistance : Cures to a resilient surface that withstands mechanical wear.?
Room Temperature Cure : Eliminates the need for ovens; suitable for temperature-sensitive components.?
UV Indicator : Facilitates automated inspection under UV light.?
Compliance : Meets UL 94 V-0 flammability rating, UL 746E, IPC-CC-830 Amendment 1, and MIL-I-46058C Amendment 7 standards.?
Application Methods : Versatile application via spray, brush, flow, dip, or automated pattern coating.?
Applications
DOWSIL™ 1-2577 is ideal for:?
Protective Coating : For rigid and flexible circuit boards, offering protection against moisture, dust, and mechanical stress.?
Printed Wiring Boards (PWB) : Particularly suitable for applications requiring toughness and abrasion resistance.?
High-Performance Electronics : Used in environments where electronic assemblies are exposed to harsh conditions.?
Packaging Options
Available packaging sizes include:?
* 500 mL bottles.?
* 1-gallon pails.?
* 5-gallon pails.?
Safety and Handling Overview
Handling Precautions:
* Ensure adequate ventilation during application to minimize inhalation of vapors.?
* Avoid contact with skin and eyes; use appropriate personal protective equipment.?
* In case of skin contact, wash thoroughly with soap and water.?
* In case of eye contact, flush with water and seek medical attention if irritation persists.?
Storage Recommendations:
* Store in a cool, dry place away from direct sunlight.?
* Keep containers tightly closed when not in use.?
* Shelf life is up to 36 months when stored at room temperature in unopened containers.?
First Aid Measures:
* Inhalation: Move to fresh air; seek medical attention if symptoms occur.?
* Skin Contact: Wash with soap and water; remove contaminated clothing.?
* Eye Contact: Rinse thoroughly with water; consult a physician if irritation develops.?
* Ingestion: Do not induce vomiting; seek medical attention if necessary.