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Elan-tron® PU 04272/PH 04272 100:33 – 2-component polyurethane potting compound for sealing, encapsulation, and cable jointing of electronics

  • Item Name: Elan-tron® PU 04272/PH 04272 100:33

  • Manufacturer: ELANTAS Beck GmbH

  • Technologies: Two-component filled semi-rigid polyurethane system, RoHS compliant, good electrical and mechanical properties, thermal class F (155°C)

  • Color: Resin – Not specified, Hardener – Pale yellow

  • Cure Type: Room temperature curing; post-curing recommended for optimal stabilization

  • Package Size: Contact to Techniq VN for details

  • Shelf Life: 12 months

1. Product Overview

Elan-tron® PU 04272/PH 04272 (Epoxylite® EIP 4272 RESIN / HARDENER) is a two-component polyurethane potting compound designed for sealings, insulation, and encapsulation. It is semi-rigid, filled, and offers reliable mechanical and electrical properties. Classified as Thermal Class F (155°C), the system is RoHS compliant and cures at room temperature with optional post-curing to enhance stability.


2. Applications

  • Potting and encapsulation of electrical and electronic components

  • Sealings and insulators for devices

  • Cable jointing in low- and medium-voltage assemblies

  • Suitable for manual, automatic, or vacuum casting

3. Typical Properties

Before Mixing

Property Resin Hardener Notes
Density (25°C) 1.20 g/ml 1.16–1.20 g/ml Good consistency
Viscosity (25°C) 1,000–1,600 mPas 60–120 mPas Flowable
Colour Pale yellow
Mixing ratio (by weight/volume) 100 33 Standard formulation
Pot life (25°C) 10–15 min Doubles viscosity
Gelation time (25°C) 8–15 min Depends on sample size

After Mixing / Cured System

Property Value Notes
Density (25°C) 1.19–1.23 g/ml Semi-rigid cured system
Hardness (Shore A/15) 40–45 Moderate flexibility
Glass transition (Tg) 5–15°C Stable in operating range
Water absorption (24h RT) 0.15–0.20% Low uptake
Water absorption (2h 100°C) 0.07–0.09% Minimal swelling
Linear thermal expansion 190–210 x10⁻⁶/°C Moderate
Dielectric constant (25°C) 4.5–5.5 Reliable insulation
Volume resistivity (25°C) 5×10¹⁴ – 9×10¹⁴ Ω·cm High electrical resistance
Dielectric strength 20–22 kV/mm Strong insulation
Tracking index (CTI) >600 High safety margin
Flexural strength 2.5–3.5 MPa Stable under stress
Tensile strength 0.75–0.85 MPa Low brittleness
Elongation at break 75–85% Good flexibility

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