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SI6721 Re-Enterable Insulating Clear Junction Box Waterproofing Silicone gel
SI6721 Re-Enterable Insulating Clear Junction Box Waterproofing Silicone gel
GEL 6721 is a transparent two-component self-healing silicone gel that cures to form a cushioned, self-healing extra-soft material. It is designed to insulate circuit boards from moisture and other harmful contaminants and to provide insulation against high voltages. Another use is to provide stress relief to protect circuits and interconnectors from high temperature and mechanical stress.
l 1:1 additive molding, strong adhesion, self-healing
l Excellent flexibility, eliminate mechanical stress
l Very low oil permeability after curing, excellent resistance to toxicity
l High temperature electrical insulation is excellent, to provide protection against high pressure
l Excellent aging resistance and weather resistance
l Excellent waterproof, anticorrosive, moisture-proof, chemical medium resistance
l It is suitable for cable connection box, waterproof junction box and underwater instrument
l Widely used in power electronics, ignition module, IGBT potting
Typical performance
Pre-cure characteristics | ||
Composition | 6721 A | 6721 B |
Appearance | Colorless clear liquid | Colorless clear liquid |
Viscosity, mPa ·s(25℃) | 1,800± 500 | 1,500± 500 |
Specific gravity, g/cm3(25℃) | 0.99 | 0.99 |
Mix ratio, mass ratio | A: B = 100:100 Change of hardness added (80-120) |
can change the amount of component B |
Viscosity after mixing, mPa ·s(25℃) | 1,800± 500 |
|
Operation time after mixing, min(25℃) | 20 mins |
|
Initial hardening conditions, ℃ /hr | 10℃ / 24 hr or 25℃ | / 6 hr or 80℃ / 30mins |
Appearance | Colorless clear gel |
|
Penetration, 1/ 10 mm | 55 |
|
Dielectric strength, KV/mm | ≥ 18 |
|
Volume resistance (DC500V), Ω·cm | 1.1 × 1015 |
|
Loss factor (1 MHz) | < 0.001 |
|
Dielectric constant (1 MHz) | < 3.00 |
|
Operating temperature range, ℃ | - 60 ∽ 260 |
|
PS: Operation time is tested with the amount of glue dispensed 100g.
Curing state All data were determined at 25℃, 55%RH after 7 days of adhesive curing.
Packaging Specifications
GEL 6721 Silicone gel ordering code:
A: 2KSI5310; B: 2KSI5311
l Component A: 10L plastic pot; Component B: 10L plastic pot
l Other packaging can also be customized
Storage and Transportation
l Component B should be kept away from light and heat and sealed (can be transported and stored as non-dangerous goods);
l Storage period 1 year (25℃).
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