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Silicone Potting Compound HN-8806 – 0.76 W/m·K, 1:1 Mix Ratio, RTV Addition Cure

Product Description

Silicone Potting Compound HN-8806 – 0.76 W/m·K, 1:1 Mix Ratio, RTV Addition Cure

Product Overview

HN-8806A/B is a two-component, addition-cure RTV silicone potting compound with a 1:1 mixing ratio. It features low viscosity, excellent electrical insulation, and thermal conductivity of 0.76 W/m·K, making it ideal for protecting sensitive electronics in harsh environments. It cures at room temperature or with heat, with no by-products, low shrinkage, and no corrosion. Suitable for applications requiring high temperature resistance (-50°C to 250°C), moisture protection, and vibration damping.

Key Features

✅ Thermal Conductivity – 0.76 W/m·K
✅ Wide Temperature Range – -50°C to +250°C
✅ Excellent Dielectric Strength – 18–25 kV/mm
✅ High Volume Resistivity – 1.0×10¹⁵ Ω·cm
✅ Low Viscosity & Easy Flow – 4500–5000 mPa·S
✅ 1:1 Mix Ratio – Easy Handling
✅ RoHS Compliant & Flame Retardant
✅ No By-Products, Non-Corrosive

Technical Parameters

Property	Value
Mix Ratio (A:B)	1:1 by weight or volume
Viscosity (A & B)	4500–5000 mPa·S
Density (A & B)	1.50 ± 0.05 g/cm³
Pot Life (25°C)	0.3–0.4 hours
Cure Time (25°C)	4–12 hours (initial)
Cure Time (80°C)	0.2 hours
Hardness (Shore A)	50 ± 5
Thermal Conductivity	≥ 0.76 W/m·K
Volume Resistivity	1.0×10¹⁵ Ω·cm
Dielectric Strength	18–25 kV/mm
Operating Temperature	-50°C to +250°C

Typical Applications
HN-8806 is widely used in:
- Power Modules & Inverters
- High-Voltage Transformers
- Battery Packs & EV Chargers
- LED Outdoor Drive Power Supplies
- Fast-Charging Adapters
- Automotive Control Units
- Network & Communication Devices
Handling & Curing Instructions
1. Preparation – Stir Components A and B separately before use.
2. Weighing – Weigh A and B in a 1:1 ratio.
3. Mixing – Mix thoroughly in a clean container. Stir in one direction to minimize bubbles.
4. Degassing – Vacuum degas for 5–10 minutes if required.
5. Potting – Pour into clean, dry housings. For large parts, consider staged potting.
6. Curing – Cure at room temperature (4–12 hrs) or heat at 80°C for 0.2 hrs.
Important Notes
- Store sealed in a cool, dry place. Shelf life: 6 months.
- Avoid contact with tin, sulfur, amine, phosphorus, or heavy metals – they inhibit curing.
- Do not mix with condensation silicones, epoxy, or polyurethane.
- Stir evenly to avoid partial non-curing.
- Vacuum degassing after potting can improve thermal performance.
Packaging & Storage
- Standard Packaging:
  - 10 kg/set (A: 5 kg + B: 5 kg)
  - 20 kg/set (A: 10 kg + B: 10 kg)
  - 50 kg/set (A: 25 kg + B: 25 kg)
- Storage: Keep in a cool, dry place. Avoid moisture and direct sunlight.
- Shelf Life: 6 months. Can be re-tested after expiry.
Frequently Asked Questions (FAQ)
Q1: What is the thermal conductivity of HN-8806?
A: It is 0.76 W/m·K, suitable for low to medium heat dissipation applications.
Q2: Can HN-8806 be used for outdoor LED drivers?
A: Yes, it offers excellent moisture resistance, UV stability, and temperature endurance.
Q3: Is HN-8806 flame retardant?
A: Yes, it passes the UL94 vertical burn test – flame extinguishes within 30 seconds.
Q4: What is the pot life of HN-8806?
A: Approximately 18–24 minutes at 25°C. Work quickly for best results.
Q5: Does HN-8806 require degassing?
A: Recommended for best thermal and electrical performance, especially in automated lines.