Covestro Apec® 1897 PC Resin
Apec 1897 PC Resin Heat Resistant Grade
Covestro Apec 1897 is a high-heat copolycarbonate resin engineered for demanding applications. With excellent flow (MVR 18 cm³/10 min), UV stability, easy mold release, and a Vicat softening point of 182°C, it excels in precision injection molding for heat-resistant, optical-grade components like automotive lighting.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt Volume-Flow Rate (MVR): 18 cm³/10 min (330 °C/2.16 kg, ISO 1133)
- Melt Mass-Flow Rate (MFR): 19 g/10 min (330 °C/2.16 kg, ISO 1133)
- Molding Shrinkage:
- Parallel: 0.85% (ISO 294-4)
- Normal: 0.85% (ISO 294-4)
Mechanical Properties (23 °C/50% r.h.)
- Tensile Modulus: 2350 MPa (1 mm/min, ISO 527-1, -2)
- Yield Stress: 72 MPa (50 mm/min, ISO 527-1, -2)
- Yield Strain: 6.7% (50 mm/min, ISO 527-1, -2)
- Nominal Strain at Break: >50% (50 mm/min, ISO 527-1, -2)
- Flexural Modulus: 2400 MPa (2 mm/min, ISO 178)
- Flexural Strength: 108 MPa (2 mm/min, ISO 178)
- Ball Indentation Hardness: 127 N/mm² (ISO 2039-1)
Thermal Properties
- Vicat Softening Temperature: 182 °C (50 N, 120 °C/h, ISO 306)
- Temperature of Deflection Under Load:
- 1.80 MPa: 156 °C (ISO 75-1, -2)
- 0.45 MPa: 173 °C (ISO 75-1, -2)
- Relative Temperature Index (RTI):
- Tensile Strength: 150 °C (UL 746B)
- Tensile Impact Strength: 130 °C (UL 746B)
- Electric Strength: 150 °C (UL 746B)
- Coefficient of Linear Thermal Expansion: 0.65 × 10⁻⁴/K (23–55 °C, ISO 11359-1, -2)
- Burning Behavior (1.5 mm): UL 94 HB
- Glow Wire Test (GWFI): 850 °C (IEC 60695-2-12)
Electrical Properties (23 °C/50% r.h.)
- Relative Permittivity:
- 100 Hz: 2.9 (IEC 60250)
- 1 MHz: 2.8 (IEC 60250)
- Dissipation Factor:
- 100 Hz: 10 × 10⁻⁴ (IEC 60250)
- 1 MHz: 90 × 10⁻⁴ (IEC 60250)
- Volume Resistivity: 1 × 10¹⁵ Ohm·m (IEC 62631-3-1)
- Surface Resistivity: 1 × 10¹⁶ Ohm (IEC 62631-3-2)
- Electrical Strength: 35 kV/mm (1 mm, IEC 60243-1)
Other Properties (23 °C)
- Water Absorption:
- Saturation Value: 0.3% (Water at 23 °C, ISO 62)
- Equilibrium Value: 0.12% (23 °C/50% r.h., ISO 62)
- Density: 1150 kg/m³ (ISO 1183-1)
Material-Specific Properties
- Refractive Index: 1.573 (Procedure A, ISO 489)
- Luminous Transmittance: 89% (1 mm, ISO 13468-2)
Processing Guide
- Injection Molding:
- Melt Temperature: 330–340 °C (ISO 294)
- Mold Temperature: 120–140 °C (ISO 294)
- Injection Velocity: 200 mm/s (ISO 294)
- Drying Conditions:
- Air Drying Temperature: 130 °C
- Drying Time: 2–3 hours
- Moisture Content (Max): ≤ 0.02%
Features & Benefits
Superior Flow for Complex Molds
Apec® 1897’s high melt volume-flow rate (18 cm³/10 min) ensures effortless filling of intricate thin-walled designs, reducing cycle times and production costs for detailed parts like lens housings.
UV Resistance for Long-Term Clarity
UV stabilization prevents yellowing and degradation in outdoor exposure, maintaining optical transparency and extending the lifespan of automotive lamp covers and headlamp lenses.
High Heat & Dimensional Stability
With a Vicat softening temperature of 182°C and low molding shrinkage (0.85%), this resin withstands extreme temperatures while retaining shape—critical for components near high-heat sources like bulbs.
Use & Applications
- Automotive Lamp Covers
- Headlamp Lenses
- UV-Exposed Optical Components
- Injection-Molded Heat-Resistant Parts