Two-Part Silicone Potting Compound HN-8808 - 10:1 Ratio for
Electronics Encapsulation
Product Overview for Silicone Potting Compound:
The HN-8808 is a two-component, condensation-cure RTV (Room
Temperature Vulcanizing) silicone rubber potting compound. Designed
for ease of use and reliable performance, it cures at room
temperature to form a durable, flexible elastomer after mixing
Components A and B at a straightforward 10:1 weight ratio. It
provides essential protection for electronic assemblies against
moisture, dust, thermal cycling, and mechanical stress, ensuring
long-term reliability across a wide range of applications.
Key Performance Parameters for Silicone Potting Compound:
* Chemistry: Condensation Cure Silicone Rubber
* Mix Ratio (A:B): 10 : 1 (by weight)
* Pot Life (25°C): 40-60 minutes
* Cure Time (25°C): 4-6 hours (tack-free), 24 hours (full cure)
* Hardness (Shore A): 30-40
* Temperature Range: -50°C ~ 200°C
* Volume Resistivity: ≥5.0×10¹⁴ Ω·cm (Transparent: >4.0×10¹⁴)
* Dielectric Strength: ≥14 kV/mm
* Thermal Conductivity: 0.3 W/M·K (Transparent) / 0.5 W/M·K
(Black/White)
Product Highlights for Silicone Potting Compound:
* Simple 10:1 Mix Ratio: Easy to remember and measure, reducing
potential for mixing errors.
* Room Temperature Cure: No oven or external heat source required,
saving energy and simplifying process.
* Versatile Protection: Offers a balanced combination of electrical
insulation, environmental sealing, and shock absorption.
* Flexible & Durable Elastomer: Absorbs stress from thermal
expansion and vibration, protecting delicate components.
* Multiple Color Options: Available in Transparent, Black, and
White to meet different application needs.
Application Areas for Silicone Potting Compound:
* General electronic control module potting
* Sensor encapsulation
* Power supply components
* Automotive electronics (non-safety critical)
* Consumer appliance boards
* LED modules
Detailed Operating Guide for Silicone Potting Compound:
1. Preparation: Ensure components and housing are clean and dry.
Stir Component A thoroughly before use.
2. Weighing: Accurately weigh Components A and B onto a scale using
the 10:1 weight ratio.
3. Mixing: Combine both parts in a clean container. Mix vigorously
for 2-3 minutes until the color is completely uniform, scraping
sides and bottom.
4. Degassing: For best results, especially with deep fills, degas
the mixed material under vacuum until bubbling stops.
5. Potting: Pour or dispense the material into the assembly. It
will self-level to cover components.
6. Curing: Allow to cure undisturbed at room temperature (25°C).
Handling strength is achieved in 4-6 hours.
Key Precautions for Silicone Potting Compound:
* Accurate Ratio: Do not deviate from the 10:1 mixing ratio.
Inaccurate ratios prevent proper curing.
* Complete Mixing: Inadequate mixing results in uncured spots and
poor performance.
* No Heat Cure: This is a condensation cure system. Applying heat
will cause bubbling and prevent proper curing.
* Ventilation: Ensure adequate ventilation during potting and
initial cure.
Packaging & Storage for Silicone Potting Compound:
* Standard Packaging: 22kg/set (20kg A + 2kg B); 11kg/set (10kg A +
1kg B).
* Storage Conditions: Keep in original, tightly sealed containers
in a cool, dry place (10-30°C).
* Shelf Life: 6 months from manufacture date.
FAQ for Silicone Potting Compound:
1. Q: What is the difference between the transparent, black, and
white versions?
A: The primary differences are thermal conductivity (Transparent:
0.3, B/W: 0.5 W/M·K) and optical properties. Black offers some EMI
shielding, White is aesthetic/reflective, Transparent allows visual
inspection.
2. Q: Can I use volume instead of weight for measuring?
A: No. Due to density differences, the volume ratio is not 10:1.
Always use weight for accuracy.
3. Q: Is it suitable for outdoor use?
A: Yes, its silicone base provides excellent resistance to
weathering, ozone, and UV radiation (especially black and white).
4. Q: How do I remove cured silicone for repairs?
A: The cured rubber can be cut and peeled mechanically. It is
challenging but possible without damaging components if done
carefully.
5. Q: What is the minimum order quantity?
A: Our standard MOQ is one 11kg kit. Contact us for smaller trial
orders.
