Product Introduction
The HumiSeal® UV40-250 is a high-solids, single-component acrylated polyurethane coating designed for UV curing with a secondary moisture cure. This coating delivers excellent chemical resistance, surface hardness, flexibility, and moisture protection. It cures tack-free upon UV exposure and fully cures within 2-3 days at ambient conditions. It fluoresces under UV light, making it ideal for use with selective coating equipment.
HumiSeal® UV40-250 Features:
- Cures tack-free under UV light with secondary moisture cure in 2-3 days.
- Excellent chemical resistance for long-term durability.
- High surface hardness while maintaining flexibility.
- Superior moisture protection for electronic components.
- Fluoresces under UV light for easy inspection.
- Compliant with UL File E105698, IPC-CC-830, and RoHS 2011/65/EC.
HumiSeal® UV40-250 Applications:
- Electronics & PCB Protection: Moisture and chemical resistance for circuit boards.
- Selective Coating Processes: Applied using spraying, brushing, and automated systems.
- Automotive & Aerospace Electronics: Durability in harsh environments.
- Industrial & High-Reliability Applications: Offers long-term protection and insulation.
- Quality Inspection & Rework: Easily inspected and repaired.
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
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| 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 |
