LFT-G® PBT CF30 (BC05B)
With 50% long carbon fiber reinforcement, LFT-G® PBT CF50 offers exceptional stiffness and impact resistance, making it a suitable replacement for metal. This polybutylene terephthalate compound offers high heat and chemical resistance, along with a strong price-to-performance ratio.
Ideal for automotive structural components, mechanical housings, and sporting goods like bicycle parts requiring high torsion. Where maximum rigidity and low moisture absorption are needed, LFT-G® PBT CF50 provides a reliable, electrically conductive solution.
Main Features
High heat resistance
Predictable dimensional behavior
Superior creep resistance
Formidable resistance to harsh chemicals
Near-zero water absorption
Effective mechanical energy dissipation
Heat Resistance
Dimensional Stability
Material Comparison
PBT LCF50 vs. Alternatives
| Property | PBT LCF50 | Standard PBT (Unreinforced) | Metal |
| Stiffness | Excellent | Low | High |
| Weight Reduction | 40% lighter than metal | Similar to PBT LCF50 | Baseline |
| Dimensional Stability | Excellent | Poor | Good |
| Creep Resistance | Superior | Low | Excellent |
| Chemical Resistance | Strong | Moderate | Susceptible to corrosion |
Data based on internal testing and industry-standard material databases.
Processing Guidelines
To ensure optimal performance and minimize fiber breakage during the injection molding of LFT-G® PBT- CF50, follow these recommended processing steps and parameters:
| Parameter | Recommended Range | Key Notes for PBT LCF50 |
| Drying Temperature ① | 90 – 110 °C | Use a desiccant/dry air dryer to avoid hydrolysis |
| Drying Time ① | 3 – 4 hours | Ensure uniform moisture removal before processing |
| Melt Temperature (Nozzle) ③ | 210 – 240 °C | Avoid overheating to preserve fiber integrity |
| Mold Temperature ② | 40 – 60 °C | Balances flowability and part dimensional stability |
| Injection Speed | Slow to Moderate | Minimize fiber breakage and internal shear |
Critical Tips：
Screw: Low-compression screw to reduce fiber breakage
Gating: Generous gating for smooth material flow
Applications
Engineered for rigorous environments, LFT-G® PBT CF50 is the ideal choice for demanding applications across transportation, manufacturing, and recreation sectors. From engine components and precision gears to bicycle frames and drone structures, this long carbon fiber composite delivers reliable performance where metal replacement and durability matter most.
FAQ
Q: What is LFT-G® PBT CF50 material?
A: LFT-G® PBT CF50 is a high-performance thermoplastic composite designed for maximum rigidity and structural integrity. This polybutylene terephthalate (PBT) compound is characterized by its exceptional strength, high heat deflection temperature, and excellent chemical resistance, offering a superior price-performance ratio for demanding technical applications.
Q: How does PBT LCF50 compare to standard PBT?
A: PBT LCF50 significantly outperforms standard unreinforced PBT. The long carbon fiber reinforcement enables metal replacement applications where standard PBT would flex, creep, or deform under load. While standard PBT suits basic non-structural parts, PBT LCF50 is engineered for demanding environments requiring maximum rigidity and long-term reliability.
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Q: What molding equipment is recommended?
A: Standard injection molding machines with wear-resistant screws and barrels are suitable. Drying at 120°C for 4-6 hours is required before processing.
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