Polyurethane potting sealants WPU-A80A/B
■ Description
Two-component encapsulating system based on polyurethane, formed from polyurethane, curing agents and additives by special production processing, it’s a flame retardancy polyurethane pouring sealant.
Excellent of the surface gloss after curing, excellent electrical properties and have flame retardant property, good of shock resistance and good chemical stability.
■ Applications
Encapsulation of electrical components of the electronic appliances for good of insulation, waterproof, flame retardancy
■ General properties
|
Test Item |
Test Mothed/Conditions |
WPU-A80A |
WPU-A80B |
|
|
Appearance |
Visualization |
White liquid |
Brown liquid |
|
|
Viscosity |
25º C mpa.s |
3000 - 7000 |
100 - 300 |
|
|
Density |
25º C g/m³ |
|
||
|
Ratio of blend |
Weight/Weight |
100 |
20 |
|
|
Viscosity(blended) |
25º C mpa.s |
1000 - 2000 |
||
|
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-A80A/B |
|
Hardness |
Shore-A |
80±10 |
|
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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