Applications

DOWSIL™ CC-2588 Conformal Coating – Protective coating for rigid and flexible electronic circuit boards.

  • Item Name: DOWSIL™ CC-2588 Conformal Coating

  • Manufacturer: The Dow Chemical Company

  • Technologies: One-part silicone resin blend solution

  • Color: Colorless to pale yellow liquid

  • Cure Type: RTV (Room Temperature Vulcanizing), moisture-cure, can be accelerated with mild heat

  • Package Size: Contact to Techniq VN for details.

  • Shelf Life: Contact to Techniq VN for details.

1. Product Overview

DOWSIL™ CC-2588 is a one-part, transparent, medium-viscosity silicone resin blend conformal coating that cures to a tough, elastoplastic surface with excellent abrasion resistance. The coating is solvent-borne with high solid content, offers fast room-temperature curing without ovens, and includes a UV indicator for automated inspection. It is recognized under UL 94 flammability classification and meets IPC-CC-830 standards, making it reliable for demanding electronic applications requiring durability and long-term environmental protection.


2. Applications

The product is designed for rigid and flexible circuit boards, particularly electronic printed wiring boards (PWB) where enhanced toughness, abrasion resistance, and long-term reliability are critical. It can be applied using spray, brush, flow, dip, or automated pattern coating, providing flexibility for various production methods.

3. Typical Properties

DOWSIL™ CC-2588 is engineered for robust protection of electronics with a balance of mechanical strength, abrasion resistance, and dielectric performance. In its uncured state, it is a colorless to pale yellow liquid with medium viscosity, allowing versatile application methods. After curing, it forms a hard, abrasion-resistant surface with strong tensile strength and elongation for flexibility. Electrically, it delivers high dielectric strength, low dissipation factor, and excellent volume resistivity, safeguarding sensitive PCB assemblies. The coating is stable over a wide operational range (-45 to 200°C), repairable, and provides UL 94 V-0 flame resistance, ensuring long service life under harsh conditions.

Property Unit Result Condition/Note
One/Two Part One
Color Colorless to pale yellow Uncured
Viscosity cP 930 Uncured
Specific Gravity 1.06 (Uncured) / 1.11 (Cured)
Tack-Free Time min 5 25°C, 50% RH
Durometer Shore A 75 Cured
Tensile Strength MPa 5.04 Cured
Elongation % 233 Cured
Dielectric Strength kV/mm 22.3 Cured
Volume Resistivity ohm·cm 2.4E15 Cured
Dielectric Constant 2.6 (100 Hz, 100 kHz) Cured
Dissipation Factor 0.0034 (100 Hz) / 0.0066 (100 kHz) Cured
Non-Volatile Content % 88 Forced draft volatility
Tg (DMA) °C -117
CTE ppm 180
Temperature Range °C -45 to 200 Long-term use
Certification UL 94 V-0 Flame resistance

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