The Nylon66(Polyamide6.6 with 40% Long Carbon Fiber
Product Model: LFT-PA66-BC04A CF40
Maximum structural stiffness
Ultimate metal replacement
Ultra-low creep
Superior fatigue endurance
LFT-G® PA66 CF40 (Grade: LFT-PA66-CF40-BC04A) is an elite-tier polyamide 66 engineering plastic reinforced with 40% long carbon fiber. Designed for the most demanding high-stress applications, it delivers maximum structural stiffness, ultra-low creep, and exceptional thermal stability. The highly dense long-fiber skeletal network inside this LCF40 composite offers a revolutionary strength-to-weight ratio, effectively replacing die-cast aluminum and zinc in aerospace, automotive, and heavy-duty industrial components.
To effectively process high-loading LFT-G® PA66-CF40 while preserving the 40% long carbon fiber length, strictly follow these injection molding parameters:
Parameter
Recommended Range
Key Notes for PA66 LCF40
Drying Temperature
100 – 120 °C
Moisture must be strictly < 0.1%
Drying Time
4 – 6 hours
Desiccant dryer is mandatory for high-loading CF
Melt Temperature
285 – 305 °C
Requires slightly higher temp due to 40% CF viscosity
Mold Temperature
90 – 120 °C
Critical for surface appearance and preventing warpage
Injection Speed
Low to Medium
Use low shear to avoid crushing the skeletal fiber network
Applications: Where LFT-G® PA66 CF40 Excels
Automotive Structural Modules
Engineered for front-end modules, battery trays, and seat structures. The 40% carbon loading provides unparalleled rigidity, allowing automakers to achieve extreme lightweighting goals by directly replacing stamped steel and heavy alloys without compromising crash safety.
High-Performance Sporting Goods
The material of choice for professional bicycle frames, racket structures, and ski bindings. Athletes benefit from the extreme stiffness and excellent energy dissipation provided by the long carbon fibers, ensuring top performance under dynamic loads.
Heavy-Duty Industrial Gears & Impellers
Ideal for industrial pump impellers, heavy-duty gears, and precision robotic arms. PA66 CF40 withstands continuous mechanical friction and high torque, exhibiting nearly zero creep over extended operational lifespans.
People Also Ask (FAQ)
Q: What is the tensile strength of PA66 CF40?
A: LFT-G® PA66 CF40 (Long Carbon Fiber) typically exhibits a remarkable tensile strength of around 285 MPa, making it significantly stronger than standard unfilled nylons and even surpassing many die-cast metals in specific strength.
Q: Can PA66 CF40 replace steel or aluminum?
A: Yes. Because it utilizes 40% long carbon fiber, this composite forms an internal skeleton that provides immense stiffness. It is routinely used to replace steel and aluminum in structural parts, reducing weight by up to 50% while offering natural corrosion resistance.
Q: Why choose long carbon fiber (LCF40) over short carbon fiber (SCF40)?
A: While both contain 40% carbon, long carbon fibers (typically 6-25mm) transfer stress much more effectively across the polymer matrix. This results in far superior impact resistance, significantly lower creep under continuous load, and better fatigue endurance compared to short fibers.
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