Two Component Dielectric Insulation Liquid Silicone Gel SI8707
∎Product Description
SI8707 is two-component transparent self healing silicone gel, when cured it will become elastomer with buffer and self-recovery property. Used to isolate moisture and other noxious pollutant from contacting the circuit board, also used as dielectric of high voltage. The other usage is stress relief for protecting circuit and interconnect devices from high temperature and mechanical stress.
∎Technical Data Table
|
PROPERTY
|
STANDARD/UNITS
|
VALUE of SI8707
|
|
----
|
----
|
PART A
|
PART B
|
|
Material
|
----
|
Polysiloxane
|
Hydrogen polysiloxane
|
|
Color
|
Visual inspection
|
Light Blue Liquid
|
Colorless Liquid
|
|
Viscosity
|
25°C, cps
|
800±200
|
400±100
|
|
Density
|
25°C, g/cm3
|
1.00
|
1.00
|
|
Mixture/mass ratio
|
----
|
A:B=100:100
|
|
Viscosity of mixture
|
25°C, cps
|
800~1000
|
|
Operation time
|
25°C, min
|
20
|
|
Fixture Time
|
25°C, min
|
70
|
|
Cure condition
|
RTV
|
＜8 hour
|
|
Cured appearance
|
----
|
Light blue transparent gel
|
|
Hardness
|
Shore A
|
20±2
|
|
Dielectric strength
|
KV/mm
|
25
|
|
Volume resistance
|
DC500V, ohm-cm
|
1.0×1014
|
|
Loss factor
|
1 MHz
|
＜0.001
|
|
Dielectric constant
|
1 MHz
|
2.8
|
|
Application temperature
|
°C
|
-60~260
|
Note：All above data were tested under standardized condition, or tested by further experiments.
∎Typical Applications
●Used for encapsulation of various modules, semi-conductor, IGBT, automotive ECU module, IC chip, weighing sensor, waterproof connector.
∎Key Features
- 1:1 addition type, good adhesive strength and self-healing
- High elongation, excellent flexibility for mechanical stress relieving
- Low oil penetration after cured, good anti-poisoning property
- Good dielectric in high temperature for high voltage protection
- Excellent aging resistance and weatherability
- Excellent waterproof, corrosion prevention, moisture proof and chemical media resistance
∎Packing Specification
●Part A—10 KG/Bucket
●Part B—10 KG/ Bucket.
∎Transport &Storage
● When stored at or below 25°C in the original unopened containers, this product has a usable life of 12 months from the date of production. Sampling test is necessary for products which exceed shelf life before taking use.
It’s non-dangerous goods, can be transported as normal chemicals, CAUTION leakage during transport.
.∎Directions for Use
-
Mix Part A and Part B by 1:1 mass ratio, after evenly mixed, pouring directly into the components or modules as per requirements.
- Still the potted component to let out the bubbles. It can be heat cured, about 15mins in 80°C. It needs about 1 hours cured under room temperature.
- Vacuum defoaming can improve the performance of cured product.
- Seal the remaining products tightly after use.
- Low temperature will slow the curing speed; heat curing is recommended.
- It's hard for SI8707 to cure if contact with sulfur, amine or Sn
∎Attention of operation
●Keep away from Children
●Avoid contact with eyes and skin. If contact with your skin, scrub first with soap water or alcohol, then rinse with water. If contact with your eyes, rinse with plenty of water, and seek medical treatment immediately.
● It is forbidden to build on the surface of the wet substrate.
