Polyurethane potting adhesives WPU-D70A/B
■ Description
Two-component encapsulating system based on polyurethane, formed from high performance resin and fillers by special production processing, Togather with high purity anhydride. The cured resin has high of thermal deformation temperature, high pressure resistance and High/Lowtemperature resistance is good. Low expansion coefficient
■ Applications
Encapsulation of electrical components of Auto Capacitor, Auto Igniter and High quality Filter
■ General properties
|
Test Item |
Test Mothed/Conditions |
WPU-D70A |
WPU-D70B |
|
|
Appearance |
Visualization |
White liquid |
Brown liquid |
|
|
Viscosity |
25º C mpa.s |
2000 - 4000 |
100 - 300 |
|
|
Density |
25º C g/m³ |
|
||
|
Ratio of blend |
Weight/Weight |
100 |
20 |
|
|
Viscosity(blended) |
25º C mpa.s |
1000 - 1500 |
||
|
Pot life(60g) |
25º C min |
30 - 50 |
||
|
Gelation time(60g) |
25º C min |
60 - 90 |
||
|
Curing condition |
º C/hrs |
24 hrs |
||
|
Storage validity |
Sealed and storage Temp.below 25º C |
6 months |
6 months |
|
■ Characteristics after curing
|
Item |
Unit/Conditions |
WPU-D70A/B |
|
Hardness |
Shore-D |
75±5 |
|
Tensile strength |
Mpa |
≥1.5 |
|
Elongation |
% |
≥50 |
|
Volume resistivity |
Ω.cm |
4x1013 |
|
Permittivity 50HZ |
-- |
|
|
Tangent angle loss 50HZ |
-- |
|
|
Insulation Strength |
kv/mm |
12.5 |
|
Flame Retardancy |
UL 94 |
V0 |
|
Surface Resistance |
Ω.cm |
＞1014 |
|
Use of temperature range |
º C |
-40 to 120 |
|
Environmental protection standard |
|
Rohs+Reach Low halogen |
■ Storage, Packaging
- Sealed and storage Temperature below 25º C after each operation
- Please see the term of validity in each packages
- Packages: A component is 25kg, B component is 10kg.
- The storage validity is 6 months, a little precipitate shall be occurred provided high temperature. Please stir the material before using.
Note: The above data was tested under the conditions of 70% humidity and 25º C Temperature, This is for your reference only.
(Product color can be adjusted)
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