Chi Mei PA-727 Hot Sale ABS Resin

Physical Properties

• Density: Measured per ISO 1183, the density is 1.04 g/cc (0.0376 lb/in³), a key parameter for material mass and volume calculations.
• Linear Mold Shrinkage: Per ASTM D955, linear shrinkage ranges 0.0030–0.0070 cm/cm, critical for mold design to ensure part dimensional accuracy.
• Melt Flow: Under ASTM D1238/ISO 1133, rates are 1.8 g/10 min (200°C/5kg) and 19 g/10 min (220°C/10kg), showing processability variations.

Polymer Properties:

• Base Material: Acrylonitrile Butadiene Styrene (ABS)
• Modification Features:
  
  • High – gloss surface, ideal for products requiring an attractive appearance.
  • Good weather resistance, suitable for outdoor – exposed applications.
  • Excellent moldability, enabling the production of intricate designs.
  • Good impact strength, providing durability for various uses.

Applications:

• Automotive: For exterior trim like grilles, mirror housings, and license plate frames, adding aesthetic appeal with weather protection.
• Electronics: To produce smartphone cases, tablet frames, and display bezels, combining style and protection for devices.
• Consumer Goods: Used for decorative items, household appliance casings, and toy bodies, ensuring both beauty and toughness.

Processing Advantages

POLYLAC® PA-727’s processing characteristics enhance its suitability for these applications:

• Injection Molding Compatibility: Processed at melt temperatures of 220–250°C on standard injection-molding machines, ensuring smooth plasticating for thin-walled and intricate parts.
• Demolding Ease: Favorable surface slip properties allow draft angles of 0.5–1°, facilitating production of complex moldings.
• Surface Quality: High gloss achieved at mold temperatures of 60–80°C, ideal for visible components.
• Recycling Potential: Regrind can be reused if free from contamination, supporting sustainability.

Limitations

• UV Sensitivity: ABS is prone to yellowing and brittleness under prolonged UV exposure, making it unsuitable for unpainted exterior applications.
• Chemical Resistance: Offers moderate resistance but may require coatings for exposure to harsh chemicals like acids or alcohols.
• Lower Impact Strength: Compared to high-impact grades like PA-747 or PA-777B, its ~12–18 kJ/m² impact strength is less suited for heavy-duty applications.
• Material Compatibility: Incompatible with most thermoplastics (e.g., polyolefins, polyamides) in the melt, leading to delamination if mixed.
• Non-Food-Grade: Not typically certified for direct food contact, limiting its use in food-related applications.