Views: 0 Author: Site Editor Publish Time: 2025-04-02 Origin: Site
Composition:
ABS contributes excellent processability, toughness, and surface finish.
PC provides high strength, heat resistance, and impact resistance.
Key Features:
Balances ABS’s ease of processing with PC’s mechanical performance.
Easier to mold than pure PC, yet stronger and more heat-resistant than pure ABS.
Ideal for applications requiring structural integrity and aesthetic quality.
✅ Superior Mechanical Properties:
Higher impact resistance than ABS (close to PC levels), e.g., for automotive interiors.
Greater rigidity than ABS, suitable for load-bearing parts.
✅ Enhanced Heat Resistance:
Heat deflection temperature (HDT): 110–125°C (vs. ABS’s 85–100°C).
✅ Excellent Processability:
Better melt flow than pure PC, reducing defects like short shots or internal stress.
Adapts well to complex mold geometries.
✅ Surface Quality:
Easily painted, electroplated, or laser-engraved (retains ABS’s surface benefits).
✅ Cost-Effective:
Cheaper than pure PC while outperforming pure ABS.
❌ Moderate Chemical Resistance:
Less resistant to solvents (e.g., acetone) compared to pure PC.
❌ Limited Transparency:
Typically opaque or semi-transparent (unlike optically clear PC).
❌ Higher Mold Requirements:
Requires more heat-resistant mold steels (e.g., NAK80 or pre-hardened H13) than ABS.
Medium volumes: NAK80 (pre-hardened steel, good polishability).
High volumes/heat resistance: H13 (hardened steel, longer lifespan).
Prototyping: Aluminum molds (low-cost, small batches only).
Gate design: Use fan gates or submarine gates to minimize shear stress.
Cooling system: Ensure uniform cooling to prevent warpage.
Venting: ABS+PC generates gases during molding—add vents to avoid burns.
| Industry | Examples | Why ABS+PC? |
|---|---|---|
| Automotive | Dashboards, grilles, trim parts | Heat resistance + impact strength + surface finish |
| Electronics | Phone cases, charger plugs | High strength + electrical insulation |
| Appliances | Vacuum cleaner housings, buttons | Durability + ease of coloring |
| Medical | Equipment housings (non-implant) | Cost-performance balance |
Drying: Pre-dry at 80–90°C for 3–4 hours (PC is hygroscopic).
Injection temperature: 230–270°C (between ABS and PC ranges).
Mold temperature: 60–80°C (reduces internal stress).
| Property | ABS+PC | ABS | PC |
|---|---|---|---|
| Impact Strength | High | Moderate | Very High |
| Heat Resistance | 110–125°C | 85–100°C | 130–140°C |
| Processability | Moderate | Easy | Difficult |
| Cost | Moderate | Low | High |
Ideal for:
Applications needing better strength/heat resistance than ABS but at lower cost than PC.
Parts requiring post-processing (e.g., painting, plating).
Alternatives:
For transparency → Use pure PC.
For cost-sensitive, low-performance parts → Use ABS.
ABS+PC is a versatile material in mold manufacturing, especially for automotive, electronics, and appliances. Successful implementation depends on:
Proper mold steel (NAK80/H13).
Optimized processing (drying, temperature control).
Smart design (gating, cooling, venting).
