Elantas Bectron® PU 4526 is a two-component liquid polyurethane system. When cured with the Hardener Bectron® PH 4912, it forms a medium-hard molding compound that meets the UL 94 V0 standard for flame resistance.
Highlight Features
- Resilient and Elastic: Provides a resilient, elastic potting compound suitable for mechanically sensitive electronic components and assembled PCBs.
- Flame Retardant: Complies with UL 94 V0 flame resistance standards.
- Curing Options: Cures at room temperature.
- Tough and Elastic: Results in a tough, elastic cured compound.
- Processing Viscosity: Offers favorable viscosity for easy processing.
- ROHS Compliant: Meets ROHS directive requirements.
Applications of Elantas Bectron® PU 4526
Elantas Bectron® PU 4526 is ideal for potting and sealing various electronic components, including assembled PCBs. Its flame-retardant properties ensure compliance with UL 94 V0 standards. The compound’s physical characteristics and high thermal resistance make it suitable for electronics exposed to shock and vibration, such as impact drills, automotive electronics, and sensor technology. This product also satisfies ROHS directive requirements.
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Properties of materials as supplied
|
Property |
PU 4526 |
PH 4912 |
Units |
|
Colour |
Black |
Brown transparent |
|
|
Viscosity 25°C DIN 53019 |
4000 ± 1000 |
100 ± 30 |
mPa.s |
|
Spec. gravity 20°C DIN EN ISO 2811-1 |
1.60± 0.05 |
1.22± 0.03 |
g/cm3 |
|
Shelf Life |
6 |
6 |
months |
Properties of mixture
|
Mixing Ratio Bectron® PU 4526 : Hardener Bectron® PH 4912 Bectron® PU 4526 : Hardener Bectron® PH 4912 |
weight parts volume @20°C |
6:1 4.58 :1 |
Parts Parts |
|
Viscosity DIN 53019 |
25°C |
1900 ± 500 |
mPa.s |
|
Process time |
25°C |
25 |
Min |
Thermal Properties of cured compound
|
Property |
Condition |
Value |
Units |
|
Flammability |
|
UL 94 V0 |
|
|
Glass transition temperature |
|
+7 |
°C |
|
Linear coefficient of expansion |
below tg |
120 x 10-6 |
K-1 |
|
Thermal Range |
|
-40 to +130 |
°C |
|
Thermal Conductivity DIN 52613 |
|
0.45 |
W/m.K |
