Product Overview Arathane® VB U 6942 / VB U 001/B is a polyurethane, halogen-free casting and impregnating system designed for processing and curing at room temperature. This soft, multipurpose system is suitable for pressure-sensitive devices and is available in various colors.
Applications
Typical Properties
| Property | Arathane® VB U 6942 (NC) | Arathane® VB U 6942 (BK) | Arathane® VB U 6942 (Grey) | Arathane® VB U 001/B |
|---|---|---|---|---|
| Type | Polyol with mineral filler | Polyol with mineral filler | Polyol with mineral filler | Isocyanate |
| Viscosity @ 25°C (mPa*s) | 3500 – 6000 | 3500 – 6000 | 3500 – 6000 | 100 – 160 |
| Specific Gravity @ 25°C (g/cm³) | 1.47 – 1.51 | 1.47 – 1.51 | 1.48 – 1.52 | 1.23 |
| Appearance | Beige liquid | Black liquid | Grey, viscous liquid | Brown liquid |
Processing Data
| Property | Value |
| Mix Ratio (by weight) | VB U 6942: 100 pbw, VB U 001/B: 16 pbw |
| Mix Ratio (by volume) | VB U 6942: 100, VB U 001/B: 19 |
| Mix Viscosity @ 25°C (mPa*s) | 3300 |
| Gel Time @ 23°C (min) | 40 – 75 (varies by color) |
| Pot Life (Time to 5000 mPa*s) | 35 min |
| Minimum Curing Cycle | 24h @ RT or 6h @ 80°C |
Mechanical and Physical Properties (Cured for 24h @ RT + 6h @ 80°C)
| Property | Value |
| Glass Transition Temperature (°C) | 20 |
| Shear Modulus (MPa) | 65 |
| Tensile Modulus (MPa) | 26 |
| Tensile Strength (MPa) | 4 |
| Elongation at Break (%) | 44 |
| Thermal Conductivity (W/mK) | 0.55 |
| Hardness (Shore A/D) | 87 / 40 |
| Flammability (UL 94) | V-0 (6.4 mm) |
Electrical Properties (Cured for 24h @ RT + 6h @ 80°C)
| Property | Value |
| Dielectric Strength (kV/mm) | 22 |
| Dielectric Constant (εr, 50Hz, 25°C) | 5.5 |
| Dielectric Loss Factor (tan δ, 50Hz, 25°C) | 13% |
| Volume Resistivity (ρ, Ω cm) | 10¹⁴ |
| Tracking Resistance (CTI) | >600 |
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