HONG YE SILICONE Electronic Potting Silicone (Model HY-9055) is a professional two-component liquid silicone, a core Thermally Conductive Potting Compound engineered for railway crossing systems. This 1:1 mixing ratio Silicone Encapsulant features fast curing, excellent thermal conductivity (≥0.8 W/(m·k)), and superior insulation (≥25 kv/mm), with stable performance across wide temperatures. It cures without exotherm, resists moisture, corrosion and aging, ensuring safe and stable operation of railway crossing electronics, meeting the rigorous safety demands of global railway equipment purchasers.
Product Overview
Our Electronic Potting Silicone (HY-9055) is a specialized Silicone Potting Compound designed exclusively for railway crossing systems—critical infrastructure requiring high safety, thermal management, and durability. As a leading manufacturer of RTV 2 Silicone Rubber for industrial applications, we optimized this Liquid Silicone formula to address the unique challenges of railway crossings: frequent vibration, outdoor exposure, and strict fire safety requirements. Unlike standard Epoxy Potting Resin, it cures without corrosion, has low shrinkage, and retains elasticity, protecting delicate crossing control components long-term. Technical Specifications
HY-9055 is a two-component Liquid Silicone with a 1:1 weight mixing ratio; Part A is dark gray fluid, Part B is white fluid, with a dynamic viscosity of 3000±500 mPa·s. At 25℃, it has an operation time of 30–60 minutes and cures fully in 4–5 hours; heating to 80℃ reduces curing time to 20 minutes. Cured hardness is Shore A 55±5, with a thermal conductivity of ≥0.8 W/(m·k), dielectric strength of ≥25 kv/mm, and volume resistivity of ≥1.0×10¹⁶ Ω·cm. It meets UL94-V1 flame retardancy, with all parameters (hardness, viscosity, curing speed) customizable for specific railway crossing components.
Product Features & Advantages
- Excellent Thermal Conductivity & Insulation: Efficiently dissipates heat from railway crossing control modules, with high dielectric strength and volume resistivity to prevent electrical leakage, ensuring safe operation.
- Fast & Stress-Free Curing: Room-temperature fast curing improves production efficiency; cures without exotherm, low shrinkage, and no corrosion, protecting sensitive electronic components.
- Flame Retardant Safety: Meets UL94-V1 standard, mitigating fire hazards in railway crossing systems, complying with strict railway safety regulations.
- Vibration & Environmental Resistance: Retains elasticity to absorb vibration from passing trains, with waterproof, moistureproof, and weather-resistant properties, adapting to outdoor railway environments.
- Strong Adhesion: Bonds tightly to PCB, metals, and electronic substrates, ensuring firm encapsulation of railway crossing components in harsh working conditions.
- Durable & Stable: Resists chemical media, yellowing, and climate aging, ensuring long service life for 24/7 railway crossing operation.
How to Use (Step-by-Step)
- Pre-Mix Preparation: Thoroughly stir Part A and Part B separately in their original containers to ensure uniform consistency (settling is normal and does not affect performance).
- Component Mixing: Combine Part A and Part B at a 1:1 weight ratio, stirring continuously for 2–3 minutes until a homogeneous mixture is achieved.
- Vacuum Defoaming: Transfer the mixed glue to a vacuum container, degas at 0.08MPa for 3 minutes to remove air bubbles, ensuring bubble-free encapsulation.
- Curing Process: Pour the mixture into pre-cleaned railway crossing components. Cure at room temperature or heat to 80℃ for accelerated curing; winter low temperatures may require heating to optimize results.
Application Scenarios
This Electronic Potting Silicone is tailored for railway crossing systems, including crossing control modules, signal transmitters, power supply units, PCB boards, and safety sensor components. It provides comprehensive thermal management, insulation, and protection, ensuring stable operation in outdoor, high-vibration railway environments. For purchasers, this translates to reduced equipment downtime, lower maintenance costs, enhanced safety compliance, and improved product reliability in the global railway equipment market.
Customization Options
We offer flexible customization services for railway crossing systems: adjust hardness, viscosity, and curing speed to match different component sizes; optimize thermal conductivity and flame retardancy for high-safety requirements; and develop fast-curing formulas for efficient mass production. OEM services are supported to meet personalized railway equipment requirements.
Certifications & Compliance
Our Electronic Potting Silicone (HY-9055) adheres to international railway and electronics industry standards, holding ISO9001 quality certification, CE, and RoHS compliance. It meets UL94-V1 flame retardancy requirements and strict railway safety standards, with stable batch consistency, non-toxic and eco-friendly, widely recognized by global railway industry clients.
FAQ
Q: Can this potting silicone withstand the vibration of passing trains?
A: Yes. It retains excellent elasticity, effectively absorbing vibration from passing trains, protecting railway crossing components from damage and ensuring stable operation.
Q: Does it meet railway fire safety requirements?
A: Yes. It meets UL94-V1 flame retardancy standard, mitigating fire hazards and complying with strict international railway safety regulations.
Q: How to handle layered silicone after long-term storage?
A: Stir Part A and Part B thoroughly in their respective containers before mixing—layering is a natural settling phenomenon and will not affect the product’s performance.
Q: Can the thermal conductivity be adjusted for railway crossing components?
A: Yes. We can customize the thermal conductivity parameter to match the heat dissipation needs of different railway crossing control modules and sensors.
Shenzhen Hong Ye Jie Technology Co., Ltd
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