Waterproof Silicone Potting Material for Electronic

PRODUCT DESCRIPTION

HN-8806, two-component addition type silicone potting rubber which can be cured into high-performance elastomer by room temperature or heating.

This potting silicone rubber has excellent electrical insulation, high moisture resistance, and a wide temperature range of -50°C to 250°C.

Low-viscosity potting compound that Will cure in deep sections. Low shrinkage rate after curing, will not emit heat and by-products, no corrosion for filling and sealing components.

No pollution in the surrounding environment, Complying with RoHs standards.

Its good thermal conductivity function can effectively transfer the heat emitted by the electronic components.

PRODUCT FEATURES

* Product Features *

Excellent electrical properties and Thermal conductivity;
One hour Fast-curing;
Flame retardant, high and low temperature resistance from -50ºC to 250ºC (58°F to 432°F);
Aging resistance and moisture-proof;
Low shrinkage rate, will not release heat and by-products, no corrosion of potting components after curing;
Flexible Rubber – Protects components against thermal cycling stress and mechanical shock.

TECHNICAL PARAMETERS

* Technical Parameters *

		Test Items	Test Standard	Units	Product test results
		Test Items	Test Standard	Units	Part A	Part B
Before Curing	1	Appearance	By eyes	---	Grey, fluid	White, fluid
	2	Viscosity	GB/T10247- 2008	25ºC，mPa·S	4500~5000	4500~5000
	3	Density	GB/T 13354-92	25ºC，g/cm³	1.50±0.05	1.50±0.05
	4	Mixing Ratio (A : B)	1:1	Weight ratio	100	100
	4	Mixing Ratio (A : B)	1:1	Volume ratio	100	100
	5	Operating time	Measured	hr	0.3-0.4
	6	Curing condition	Measured	hr	4~12 (25ºC, initial cure)
	6	Curing condition	Measured	hr	0.20 (80ºC)
After Curing	7	Appearance	By eyes	---	Grey Elastomer
	8	Hardness	GB/T 531.1-2008	Shore A	50±5
	9	Thermal conductivity	GB/T10297-1998	w/m·k	≥0.76
	10	Expansivity	GB/T20673-2006	µm/(m,ºC)	210
	11	Moisture Absorption	GB/T 8810-2005	24h,25ºC,%	0.01~0.02
	12	Volume resistivity	GB/T 1692-92	（DC500V）,Ω· cm	1.0×10¹⁶
	13	Dielectric intensity	GB/T 1693-2007	Kv/mm(25ºC)	18~25
	14	Temperature Resistance	Measured	ºC	-50~+250

* UV-94 Fire retardant: After two times 10s burn tests on a 3mm-thick sample, the flame was extinguished within 30s, and no burnt fell. [1]

* Noted: The data after curing are all measured after the silicone is completely cured.

HOW TO USE

1. When used, weigh A and B according to proportion and then mix them evenly.

Mix thoroughly and evenly with a clean stirring device in a clean container, and then potting can be done.

It can also be sealed under a vacuum after removing the bubbles.

2. The surface of the potting element needs to be cleaned.

If the potting product is too large, it is recommended to potting in stages and then cure at room temperature (4-12hr) or by heating (80ºC-0.5hr).

3. For the automatic potting production line, in order to ensure accurate mixing ratio of A and B, Part A and Part B should be vacuumed respectively to remove the bubbles (the foaming time is 5-10 minutes), and then A and B should be pumped to the static mixer in proportion with a metering pump, and then potting can be done after mixing evenly.