Product Description
The HumiSeal® UV40-250 UV Curable Conformal Coating is a high-solids, single-component acrylated polyurethane coating designed for UV curing with a secondary moisture cure mechanism. It delivers exceptional chemical resistance, surface hardness, flexibility, and moisture protection. This coating cures tack-free upon UV exposure, with unexposed areas fully curing within 2-3 days at ambient conditions. It fluoresces under UV light for easy inspection and is compatible with all selective coating equipment, making it ideal for electronics and industrial applications.
Features of HumiSeal® UV40-250 UV Curable Conformal Coating
- Curing tack-free under UV light, with a secondary moisture cure in 2-3 days.
- Providing excellent chemical resistance for long-term durability.
- Offering high surface hardness while maintaining flexibility.
- Ensuring superior moisture protection for electronic components.
- Fluorescing under UV light for easy quality inspection.
- Being compatible with all selective coating equipment for efficient application.
- Meeting UL File E105698, IPC-CC-830, and RoHS 2011/65/EC compliance standards.
Applications of HumiSeal® UV40-250 UV Curable Conformal Coating
- Electronics & PCB Protection: Providing moisture and chemical resistance for circuit boards and sensitive components.
- Selective Coating Processes: Applied using spraying, brushing, and automated dispensing systems.
- Automotive & Aerospace Electronics: Enhancing durability in harsh environments.
- Industrial & High-Reliability Applications: Offering long-term insulation and protection.
- Quality Inspection & Rework: Easily inspected under UV light and applicable for touch-up repairs.
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs. With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with: Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.About Prostech
| Property | Value |
|---|---|
| Density (g/cm³) | 1.06 |
| Minimum Solids Content (%) | 95 |
| Viscosity (CPS, per Fed-Std-141, Meth. 4287) | 300 ± 50 |
| Recommended Coating Thickness (microns) | 25 – 125 |
| Recommended UV Cure | See curing section below |
| Shelf Life at Room Temperature (DOM) | 6 months |
| Recommended Stripper | HumiSeal® Stripper 1100 |
| Thermal Shock (50 cycles per MIL-I-46058C) | -65°C to 125°C |
| Glass Transition Temperature (Tg – DSC) | 26°C |
| Coefficient of Thermal Expansion (TMA) | 112 ppm/°C (Below Tg), 283 ppm/°C (Above Tg) |
| Modulus (DMA) | 1060 MPa @ -60°C |
| Dielectric Withstand Voltage | > 1500 V (per MIL-I-46058C) |
| Dielectric Constant (1MHz, 25°C, ASTM D150-98) | 2.41 |
| Dissipation Factor (1MHz, 25°C, ASTM D150-98) | 0.01 |
| Insulation Resistance (per MIL-I-46058C) | 8.0 × 10¹⁴ ohms (800TΩ) |
| Moisture Insulation Resistance (per MIL-I-46058C) | 4.7 × 10¹⁰ ohms (47GΩ) |
| Fungus Resistance (per ASTM G21) | Pass |
| Resistance to Chemicals | Excellent |
