High Voltage Polyurethane Potting Compound ≥25kV/mm - China Suppliers & Factory for Instrument Transformers
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 (FAQ)
Q1
What applications is this electronic potting compound series suitable for?
It is widely applied for potting protection in LED displays, underwater lights, buried lights, automotive ballasts, surge protection modules, washing machine mainboards, and other waterproof electronic products.
Q2
What is the thermal conductivity range of this potting series?
The series features adjustable thermal conductivity ranging from 1.0 to 3.5 W/m·K (with custom formulation options up to 4.0 W/(m·K)), effectively conducting heat away from internal components to reduce temperature rise.
Q3
Is the potting compound easy to rework after curing?
Yes. As a reenterable potting compound, it requires no primer, cleans easily after dispensing, and allows cured products to be disassembled for rework and maintenance, reducing overall production and servicing costs.
Q4
What flame retardant and environmental certifications does it carry?
This potting compound series carries UL94 V-0 flame retardant certification to prevent fire spread during faults and complies fully with RoHS environmental directives, being non-toxic and non-corrosive.
Q5
How does it facilitate high-volume automated production lines?
With low viscosity and excellent self-leveling, it achieves bubble-free penetration into complex components. It offers a 30–60 minute working window at 25°C and is fully compatible with automated dispensing and vacuum degassing systems.
Q6
How does the cured elastomeric structure protect electronic components?
Upon curing, it forms a flexible yet supportive elastomeric structure that effectively resists vibration, mechanical shock, and deformation, protecting delicate solder joints and pins during transport and long-term operation.
