• Item Name: WEVO-Casting Resin PD 445
• Manufacturer: WEVO-CHEMIE GmbH
• Technologies: Two-component unfilled polyurethane with excellent chemical resistance and low dielectric constant
• Color: Yellowish or as requested
• Cure Type: Ambient temperature curing, final hardness in 10–14 days
• Package Size: 5 kg, 10 kg, 25 kg buckets and 180 kg drums
• Shelf Life: 6 monthsWEVO-Casting Resin PD 445 – Flexible polyurethane system for encapsulation and coating of sensitive electronic component
WEVO-Casting Resin PD 445 is a two-component, unfilled polyurethane encapsulating system designed for high flexibility and resilience. It offers outstanding resistance to acids and alkalis, excellent low-temperature flexibility, and strong adhesion to plastics, metals, and glass. Its stable dielectric constant across wide frequencies and temperatures makes it ideal for sensitive electronics. The operating temperature range is -60 °C to +120 °C. The resin is processed with WEVO-Hardener 385.
Encapsulation and coating of pressure-sensitive electronics.
Protection of sensors, PCBs, and SMD-equipped boards.
Ideal for components exposed to harsh chemicals and temperature fluctuations.
| Property | PD 445 (Unmixed) | Hardener 385 (Unmixed) | Mixed System |
|---|---|---|---|
| Appearance | Yellowish or as requested | Yellowish | Yellowish |
| Viscosity (22 °C) | 2,000–3,000 mPa·s | 15–35 mPa·s | 1,800–2,200 mPa·s |
| Density (22 °C) | 0.92–0.94 g/cm³ | 1.20–1.24 g/cm³ | – |
| Mixing Ratio (by weight) | 100 parts | 20 parts | – |
| Pot life (70 g, RT) | – | – | ~30 min |
| Curing time | – | – | 12–24 h at RT (final hardness 10–14 days) |
| Shore Hardness | – | – | 25–30 A |
| Tensile Strength | – | – | 1 N/mm² |
| Elongation at Break | – | – | 140 % |
| Modulus of Elasticity | – | – | 2 N/mm² |
| Thermal Conductivity | – | – | 0.2 W/m·K |
| Coefficient of Expansion | – | – | 80 ppm/K (below Tg), 220 ppm/K (above Tg) |
| Glass Transition Temp. | – | – | < -65 °C |
| Shrinkage | – | – | 0.2 % |
| Water Absorption | – | – | 0.6 % (30 days) |
| Dielectric Strength | – | – | 20 kV/mm |
| Volume Resistivity | – | – | > 4.2×10¹⁴ Ω·cm |
| Surface Resistivity | – | – | > 1×10¹⁶ Ω |
| Dielectric Constant ε | – | – | 3.0 (50 Hz, 23 °C) |
| Dissipation Factor tan δ | – | – | 0.014 (50 Hz, 23 °C) |
| Comparative Tracking Index | – | – | CTI 600 |
| Flammability | – | – | HB (UL94) |
LOCTITE ECCOBOND UF 9000AG-061 is specifically formulated for FCBGA and Cu pillar flip chip packaging, ensuring robust solder joint encapsulation under extreme electrothermal cycling from -65 °C to 150 °C. Its superior capillary flow also optimizes throughput in automated assembly lines for high-density ICs.
BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.
LOCTITE® ABLESTIK NCA 3218 is specifically formulated for ADAS optical modules, ensuring secure bonding in lens barrel to housing and lens housing to circuit board interfaces where dimensional accuracy and dielectric integrity are non negotiable.
Loctite® 3296, a dual cure (UV & thermal) adhesive, is engineered for active alignment assembly of ADAS cameras and LiDAR modules. Its optimized bonding to aluminum and FR4 substrates ensures secure fixation of optical components while enabling nanometer level alignment critical for high resolution imaging.
Techniq Vietnam provides end-to-end materials and process solutions, integrating world-class technologies in adhesives, soldering, and thermal management.
Through partnerships with leading global brands, we deliver high-value materials, expert consulting, and optimized supply chains ensuring timely delivery, efficiency, and sustainable growth for our clients.
At Techniq, our mission is to connect cutting-edge materials, processes, and equipment with customer needs, enabling efficiency, reliability, and long-term value creation.
Tel: +84 88 990 19 29
Copyright © TECHNIQ VIETNAM
Leave your information or connect via Hotline, and our expert team will reach out immediately to provide professional consultation and customized solutions.
Email: info@techniq.vn
Our Technical Support Team is on hand from 8:30 AM to 5:30 PM (GMT+7).
For requests outside these hours, please submit your request form and we will respond at the earliest opportunity.