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WEVOPUR PD 4 is known for highly configurable reactivity and flow characteristics. Their adhesive properties ensure reliable bonding and sustained protection of electronic components against aggressive ambient conditions.

Chemical Family: Polyurethanes (PU)

Glass Transition Temperature (Tg): -60.0 - -60.0 °C

Features: Flame Retardant, Good Mechanical Properties, High Impact Resistance, Improved Hardness, Long Potlife, Thermal Resistance

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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
CASE Ingredients Functions
Technologies

Features & Benefits

Features
  • Broad hardness range: Shore 00 to D 90
  • Adjustable flow properties
  • Filled and unfilled systems
  • Good temperature cycle behavior
  • Clear, UV-resistant systems
  • Low dielectric constant
  • Self-extinguishing systems in accordance with UL 94 V-0
  • Good adhesion not only on conventional thermoplastics, but also on high-performance plastics such as LCP, BMC, etc.
  • Operating temperature range: -60 °C to +165 °C
  • Pot life adjustable from 1 to 90 minutes
  • Thermal conductivity up to 2.0 W/m·K

Applications & Uses

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Density of Hardener at 22 °C1.20 –1.24g/cm³DIN EN ISO 2811-1:2016-08
E modulus15N/mm²DIN EN ISO 527-2:2012-06
Volume Resistivity10^14Ω·cmDIN EN 62631-3-1:2017-01
Thermal Conductivity0.2W/m·KDIN EN ISO 22007-2:2015-12
Coefficient of Expansion (<–60 °C)56ppm/KTMA ISO 11359-2:1999-10
Coefficient of Expansion (>–60 °C)211ppm/K
Density of Resin at 22 °C0.91 – 0.93g/cm³DIN EN ISO 2811-1:2016-08
Dielectric Constant ε (at 50 Hz, 23 °C)3.1DIN EN IEC 62631-2-1:2018-12
Dielectric Strength25kV/mmDIN EN 60243-1:2014-01
Glass Transition Temperature–60°CTMA ISO 11359-2:1999-10
Loss Factor tan δ (at 50 Hz, 23 °C)0.014DIN EN IEC 62631-2-1:2018-12
Mixed Viscosity at 22 °C1200 –1600mPa·sRotational viscometer
Mixing Ratio100 : 34Parts by Weight
Operating Temperature–60 up to +120°C
Reactivity at 22 °C10 – 40min
Water Absorption0.2%30 days, 22 °C
Hardness60-75Shore A (D)DIN ISO 7619-1:2012-02
Hardness60 –75Shore ADIN ISO 7619-1:2012-02
Flammability
ValueUnitsTest Method / Conditions
FlammabilityHBUL 94