Polybutylene Terephthalate (PBT)
Product Overview
Polybutylene Terephthalate (PBT) is a semi-crystalline engineering thermoplastic used in various applications requiring excellent mechanical properties, electrical insulation, and chemical resistance.
Chemical formula: -[C12H12O4]n- | CAS No. 26062-94-2
Technical Specifications
PBT Grades Comparison
| Specification Item | KH2085 | KH2090 | KH2100 | KH2110 | Test Method |
|---|---|---|---|---|---|
| Intrinsic Viscosity (IV) (dl/g) | 0.825±0.012 | 0.870±0.012 | 1.000±0.012 | 1.070±0.015 | ISO 1628-5 |
| Melt Volume Rate (MVR) (g/10min, 250°C/2.16kg) | 69.0±5.0 | 50.0±4.0 | 30.0±3.0 | 19.0±3.0 | ISO 1133 |
| Tensile Strength (MPa) | ≥55 | ≥50 | ≥50 | ≥50 | ISO 527 |
| Elongation at Break (%) | ≥50 | ≥70 | ≥100 | ≥150 | ISO 527 |
| Density (g/cm³) | 1.30-1.32 | 1.30-1.32 | 1.30-1.32 | 1.30-1.32 | KHS 001 |
| Flexural Strength (MPa) | ≥70 | ≥70 | ≥70 | ≥65 | ISO 178 |
| Izod Notched Impact Strength (kJ/m²) | ≥4.0 | ≥5.0 | ≥6.0 | ≥7.0 | ISO 180 |
| Moisture Absorption (%) | ≤0.2 | ≤0.2 | ≤0.2 | ≤0.2 | - |
| Melting Flow Rate (g/10min, 235°C/2.16kg) | 45.0±4.0 | 33.0±4.0 | 19.0±3.0 | 13.0±3.0 | ISO 1133 |
| Carboxyl End Groups (mol/t) | 14.0±4.0 | 14.0±4.0 | 16.0±4.0 | 22.0±4.0 | - |
| Color L Value | ≥95 | ≥95 | ≥95 | ≥95 | GB/T 14190 |
| Color b Value | 2.0±1.0 | 2.0±1.0 | 2.0±1.0 | 3.0±1.0 | GB/T 14190 |
Manufacturer Information
Hengli Petrochemical
- Leading manufacturer of PBT resins
- Multiple grades available for different applications
- Consistent quality and performance
Applications
- Automotive: Electrical components, connectors, housings
- Electrical & Electronics: Switches, connectors, circuit breakers
- Consumer Goods: Appliance parts, tool housings
- Industrial: Precision parts, gears, bearings
Key Properties
- Excellent dimensional stability
- High stiffness and strength
- Good electrical insulation properties
- Chemical resistance to solvents, oils, and greases
- Low moisture absorption
- Good processability
Packaging and Storage
Packaging Options
- 25 kg bags
- 900 kg, 950kg bulk bags
Storage & Transportation
- Store in cool, dry, ventilated areas
- Protect from humidity and direct sunlight
- Maintain packaging integrity
- Non-hazardous material
Safety Information
Refer to Material Safety Data Sheets (MSDS) prior to handling and processing these materials. Follow standard safety protocols for thermoplastic processing.
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