Changzhou Keyuan Chemical Industry Co.,Ltd.
Changzhou Keyuan Chemical Industry Co.,Ltd. Silicone chemical products(silicone defoamer/oil/emulsion/surfactant/rubber/resin).
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Two Bond Heat Resistant Condensed Liquid Silicone Sealant for electronic vigour pieces
1. product introduction
KY-907 can be divied two components and three components, which is a condensation type potting material cured under room-temperature specially designed for the potting in LED, power modules, electronic vigour pieces, screen, and other electronic products.
2.Properties
excellent resistance to high and low temperature change, anti-uv, anti-aging properties,flame retardant and matt; faster overall curing speed, low viscosity and good softness, more suitable for perfusion; It also has excellent adhesive function, and therefore has better sealing effection. effective moistureproof, waterproof; Can be used between the temperature -60 ~ + 250℃
3. Technical Index
|
Technical Index |
KY-907-1 flame retardant |
KY-907-2 Transparent type |
KY-907-3 matt type |
|
|
Before curing |
Appearance color |
black |
transparent |
black |
|
A --Viscosity(25°C.mpas) |
2000±500 |
2000±500 |
2000±500 |
|
|
B--:curing agent (%) |
3-10 |
3-10 |
3-10 |
|
|
C--:matt agent(%) |
-- |
-- |
1 |
|
|
Viscosity after mixing (25°C,h) |
<1500 |
1500~2000 |
1500~2000 |
|
|
After curing |
Preliminary curing time(25°C,h) |
2~4 |
2~4 |
2~4 |
|
Completely curing time(25°C,h) |
24 |
24 |
24 |
|
|
Hardness (Shore A) |
20±5 |
10±2 |
35±2 |
|
|
Flame retardant grade |
94—V0 |
-- |
94—V0 |
|
|
Tensile strength (KN/cm2) |
≤1.00 |
≤1.00 |
≤1.00 |
|
|
Dielectric constants (100 KHZ) |
3.0 |
3.0 |
3.0 |
|
|
Volume resistivity(Ω·cm) |
1.0×1015 |
1.0×1015 |
1.0×1015 |
|
|
Breakdown strength (KV/mm, p)
|
15 |
15 |
15 |
|
4. How to use?
1. KY-907 pouring sealant can be divided into A, B two components or A, B and C three components, mixing A components before using, then according to A: B=100:10 or A: B: C =100:10:1 by weight or volume, mixing and stirring them in containers (stainless steel barrel or plastic) before potting.
2. perfusing mixed A, B components after bubbles automatically vanishing; for fast-curing and high- viscosity encapsulation, should perfusion after pumping take off the bubbles by vacuum in the mixed A, B glue; For the components with tiny aperture, can perfusion firstly, then put components in vacuum device to taking off bubbles.
3. the surface hardness and curing time of this model potting rubber can be adjusted according to user’s requirement.
5.Application:
LED, power modules, electronic vigour pieces, screen, and other electronic products.