High Voltage Polyurethane Potting Compound ≥25kV/mm Dielectric Strength - Reliable China Suppliers & Factory
Product Introduction
Outdoor LED displays endure year-round sun and rain. Underwater lights operate while fully submerged. Automotive ballasts run in engine bay heat and vibration. Washing machine mainboards face frequent moisture exposure. These applications demand far more from potting materials than standard electronics. When adhesion weakens, waterproofing fails, or the potting layer cracks with age, the consequences range from malfunction to complete unit failure. Songxi Technology's two-component electronic potting compound series was developed specifically to address these challenges.
On the production line, the first obstacle is often insufficient flowability to completely fill the tiny gaps around PCBs, transformers, inductors, and IC chips—leaving trapped air bubbles that cause uneven heat dissipation and partial discharge. This series delivers low viscosity and excellent leveling, allowing thorough penetration into every corner of the component assembly to achieve complete, bubble-free, void-free potting. As a low density potting silicone, it reduces both potting costs and product weight, making it especially practical for power supply designs pursuing lightweighting goals.
For high-volume production, the working window of the potting material directly impacts line efficiency. This series offers ample working time after mixing and is compatible with automated potting lines, allowing seamless continuous potting and vacuum degassing in batch operations. After curing, it forms an elastomeric structure combining support with flexibility, protecting solder joints and pins from mechanical stress during transport and field use.
Long-term reliability of potted products depends on two critical factors: sealing and heat dissipation. This series offers excellent adhesion and outstanding outdoor waterproofing and moisture protection, with weatherability that holds up over years of outdoor service. As a lightweight flame retardant silicone, it carries UL94 V-0 certification, effectively containing risk propagation under fault conditions such as abnormal heating or short circuits. With adjustable thermal conductivity from 1.0 to 3.5W/m·K, it efficiently conducts heat from internal components to the housing, reducing temperature rise and slowing thermal aging. It has passed rigorous reliability testing including high-temperature aging and thermal shock, with no cracking, no debonding, and no performance degradation—meeting the demands of harsh environments including outdoor exposure, high humidity, and salt spray.
On safety and compliance, this series carries UL94 V-0 flame retardant certification, effectively containing risk propagation under fault conditions such as abnormal heating or short circuits, helping meet safety requirements for exported power supplies and high-end electronic equipment. It also complies with RoHS environmental directives, is non-toxic and non-corrosive. No primer is required, it cleans easily after dispensing, and as a reenterable potting compound, cured products can be disassembled for rework—details that significantly reduce total cost in high-volume production and after-sales maintenance.
From LED displays and underwater lights to automotive ballasts, surge protection modules, and washing machine mainboards, this series has been widely adopted across diverse waterproof electronic product applications. With mature formulations, stable batch-to-batch production capability, and comprehensive certifications, it is helping more manufacturers improve product quality, reduce rework rates, and strengthen market competitiveness.
Features
Two-component system with low viscosity and excellent leveling
Low-density formulation for lower cost and reduced weight
Thermal conductivity from 1.0 to 3.5W/m·K
Elastomeric structure with vibration, shock, and deformation resistance
Good substrate compatibility with excellent adhesion
Effective outdoor waterproofing and moisture protection with excellent weatherability
No primer required, easy to clean, easy to disassemble after curing
UL94 V-0 flame retardant, compliant with RoHS environmental requirements
Specifications
| Model | Color | Mix Ratio (by weight) | Mixed Viscosity | Specific Gravity | Working Time @25°C | Thermal Conductivity |
|---|---|---|---|---|---|---|
| DR8522 Series | Black / White | 1:1 | 3000±500 mPa·s | 1.55±0.1 g/ml | 30-60 min | 0.6 W/(m·K) |
| Black / White | 1:1 | 3500±1000 mPa·s | 1.85±0.1 g/ml | 30-60 min | 1.0 W/(m·K) | |
| Black / White | 1:1 | 3500±1000 mPa·s | 2.45±0.1 g/ml | 30-60 min | 1.5 W/(m·K) | |
| Black / White | 1:1 | 5500±1000 mPa·s | 2.75±0.1 g/ml | 30-60 min | 2.0 W/(m·K) | |
| Black / White | 1:1 | 12000±2000 mPa·s | 2.95±0.1 g/ml | 30-60 min | 3.0 W/(m·K) | |
| Black / White | 1:1 | 25000±3000 mPa·s | 3.15±0.2 g/ml | 30-60 min | 4.0 W/(m·K) |
Application
Potting protection for LED displays, underwater lights, buried lights, automotive ballasts, surge protection modules, washing machine mainboards, and other waterproof electronic products.
Frequently Asked Questions
QWhat applications are best suited for this two-component potting compound?
It is designed for demanding environments requiring waterproofing, thermal conductivity, and vibration resistance, including outdoor LED displays, underwater lights, buried lights, automotive ballasts, surge protection modules, and washing machine mainboards.
QHow does the low viscosity formulation benefit automated production lines?
The low viscosity and excellent leveling allow the compound to penetrate tiny gaps around PCBs, transformers, inductors, and ICs smoothly, achieving bubble-free and void-free encapsulation while offering ample working time (30–60 minutes) for continuous potting and vacuum degassing.
QWhat safety and environmental certifications does this potting series have?
This series carries UL94 V-0 flame retardant certification to suppress risk propagation during electrical faults, complies fully with RoHS environmental directives, and is non-toxic and non-corrosive.
QCan components potted with this material be reworked or repaired?
Yes. It functions as a reenterable potting compound, meaning cured products can be disassembled for rework and maintenance without requiring primer during application, significantly cutting post-assembly costs.
QWhat thermal conductivity options are available in the DR8522 series?
The DR8522 series provides multiple thermal conductivity grades ranging from 0.6 W/(m·K) up to 4.0 W/(m·K) with mixed viscosities tailored to match various heat dissipation requirements.
QHow does the potting compound perform under harsh environmental conditions?
It has passed comprehensive reliability evaluations including high-temperature aging and thermal shock testing without cracking, debonding, or degrading, ensuring stable protection in high humidity, outdoor exposure, and salt spray.
