Chimei Polylac® PA-777D ABS
Polylac® PA-777D High Heat Moderate Impact ABS
POLYLAC PA-777D is an ABS resin designed for high-heat environments. It keeps its shape even at 117°C (under heavy load) and stays tough in both hot and freezing conditions. Its moderate impact strength means it won’t crack under pressure. PA-777D delivers heat resistance, durability, and ease of molding. It’s the go-to ABS resin for manufacturers who need materials that work as hard as their products do.
Associated Documents
ISO TDS
ASTM TDS
MSDS
RoHS
SVHC
UL Product iQ
Processing Data
Typical property data
Physical Properties
- Melt Flow Index: 5.5 ml/10 min (ISO 1133, 220℃×10KG)
- Mass Density: 1.06 g/cm³ (ISO 1183, 23℃)
Mechanical Properties
- Tensile Strength:
- At yield: 45 MPa (ISO 527, 50 mm/min)
- At break: 33 MPa (ISO 527, 50 mm/min)
- Tensile Elongation: 30% (ISO 527, 50 mm/min)
- Flexural Strength: 73 MPa (ISO 178, 2 mm/min)
- Flexural Modulus: 2.3 GPa (ISO 178, 2 mm/min)
- Izod Impact Strength:
- 13 KJ/m² at 23℃, Notched (ISO 180/1A)
- 7 KJ/m² at -30℃, Notched (ISO 180/1A)
- Charpy Impact Strength:
- 14 KJ/m² at 23℃, Notched (ISO 179)
- 7 KJ/m² at -30℃, Notched (ISO 179)
Thermal Properties
- Vicat Softening Temperature:
- 124℃ (ISO 306, 50℃/hr; 1KG)
- 117℃ (ISO 306, 50℃/hr; 5KG)
- Heat Distortion Temperature:
- 97℃ unannealed (ISO 75/A, 1.8 MPa)
- 117℃ annealed (ISO 75/A, 1.8 MPa)
- Coefficient of Linear Thermal Expansion: 8.3×10−58.3 \times 10^{-5} (ISO 11359)
Flammability
UL-94: HB (1.5mm)
Mold Shrinkage
Range: 0.3–0.6% (ISO 294-4)
Process Guide
- Pre-drying: 90~105℃ for 3 hours (depending on humidity, reground resin ratio, and storage conditions)
- Barrel Setting Profile:
- Min: 220–230–230℃
- Max: 240–250–250℃
- Mold Temperature: 30~70℃ (based on part thickness, dimensions, and gate/runner system)
- Injection Pressure: 50–70 kg/cm²
- Holding Pressure: 40–60 kg/cm²
- Back Pressure: 5–15 kg/cm²
Features & Benefits
Withstands Extreme Heat Conditions
Polylac PA-777D handles up to 117°C under heavy loads and 124°C softening points. Perfect for appliances and auto parts exposed to constant heat without warping or losing shape.
Balanced Strength and Durability
It offers 45 MPa tensile strength and 13 KJ/m² impact resistance at room temperature. Tough enough for daily stress, yet flexible to avoid cracks in cold (-30°C) environments.
Safe, Easy-to-Mold Material
UL94 HB flammability rating ensures safety for household use. Low 0.3–0.6% mold shrinkage simplifies production, creating precise parts for heaters, hairdryers, and automotive components.
Use & Applications
- Household Appliances: Hair dryer tubes, iron casings, heater components.
- Automotive: Engine bay covers, interior trim, water tank lids.
- Durable Electronics: Power tool housings, heat-resistant connectors.
