Acrylonitrile Butadiene Styrene (ABS) is a terpolymer made by polymerizing styrene and acrylonitrile in the presence of polybutadiene. This unique structure offers a balance of toughness (from butadiene), rigidity (from styrene), and chemical resistance (from acrylonitrile). ABS is easy to mold and extrude, making it a popular choice for complex shapes. However, it is sensitive to UV exposure and requires stabilization for outdoor use.
Technical Characteristics
| Molecular formula | (C₈H₈·C₄H₆·C₃H₃N)ₙ |
| Density (gr/cm3) | 1.03 – 1.07 |
| Melting point | Amorphous (softens around 105°C) |
| Melt flow index at 220°C and 10 kg load | 1 – 20 (gr/10min), depending on grade |
| Tensile strength | 35 – 50 (MPa) |
| Vicat softening temperature | ~100 – 107°C |
| Appearance | Opaque, glossy surface, available in multiple colors |
Applications
- Automotive parts (dashboards, trims)
- Consumer electronics (TV housings, computer casings)
- 3D printing filament
- Household appliances and toys (e.g., LEGO)
- Luggage and protective cases
- Piping and fittings
Environmental Impact of ABS
ABS is a petroleum-based, non-biodegradable plastic. It’s recyclable (coded as #7), though recycling infrastructure for ABS is less common than for other plastics. Incineration can release harmful chemicals if not controlled properly. Although it has a long useful life, promoting recycling and designing for disassembly can reduce its environmental footprint.
Safety Measures and Regulations for Handling ABS
ABS is generally safe under normal conditions but can release toxic fumes like styrene and acrylonitrile during high-temperature processing. Adequate ventilation, PPE, and temperature control are essential during manufacturing. Compliance with OSHA, EPA, and other local safety standards ensures proper handling and minimal health risks.
Packing
ABS is commonly available in 25 kg bags or bulk containers, typically in pellet form, suitable for injection molding, extrusion, and 3D printing.
ABS:
- SD 0150
- ABS-40
- ABS-50
- ABS-70