When industrial components face the triple threat of high mechanical loads, friction, and elevated operating temperatures, standard nylons surrender. LFT-G® PA66 CF30 (Model: BC03B) is the definitive answer. This is a premium injection-molding grade Polyamide 66 reinforced with 30% Domestic Long Carbon Fiber, specifically engineered to retain its stiffness near engine blocks or in high-speed machinery where standard PA6 would soften.
Engineers often search for PA66 CF30 expecting a simple strength upgrade. However, Short Carbon Fiber compounds tend to creep and lose dimensional accuracy when temperatures rise above 100°C. LFT-G® utilizes proprietary Long Carbon Fiber (LCF) technology to form an internal skeletal network. This locks the polymer chains in place, resulting in a Heat Deflection Temperature (HDT) exceeding 250°C and superior fatigue resistance compared to die-cast alloys, all while reducing weight by 30%.
Figure 1: LFT-G® PA66 LCF retains more modulus where PA6 SCF begins to fail.
Why Choose LFT-G® Domestic Grade PA66 LCF?
High-Temp Performance at a Sensible Price.
PA66 base resin is inherently more expensive than PA6 due to the complex ADN (Adiponitrile) supply chain. Combining this with imported carbon fiber often breaks the project budget. LFT-G® leverages a strategic domestic supply chain to solve this:
- Cost-Effective Excellence: By using high-modulus China's Carbon Fiber (China T700 Grade Equivalent), we reduce the final compound cost by approximately 25% without sacrificing thermal properties.
- Supply Security: PA66 global supply can be volatile. We maintain robust strategic stock levels of raw materials to ensure your production line never stops.
- Process Optimization: Our specialized pultrusion die-heads ensure complete wetting of the fiber, preventing "dry spots" that cause catastrophic failure under heat stress.
Performance Highlights: Built for Heat & Friction
Thermal Stability (HDT > 250°C)
PA66 naturally melts higher than PA6. Reinforced with 30% long carbon fiber, the Heat Deflection Temperature soars, allowing parts to withstand soldering processes (SMT) and under-hood engine heat without warping.
Self-Lubricating Wear Resistance
Carbon fiber is naturally self-lubricating. In gear applications, PA66 CF30 reduces the coefficient of friction compared to glass fiber, lowering heat generation and extending part life in non-lubricated environments.
Hot Chemical Resistance
Excellent resistance to automotive fluids (hot engine oil, glycol coolant, brake fluid) even at high pressures, making it the viable metal replacement for powertrain cooling systems.
Technical Data Sheet (Model: LFT-G® PA66-BC03B)
| Property | Test Standard | Unit | Typical Value |
|---|---|---|---|
| Base Resin | - | - | Polyamide 66 (PA66) |
| Fiber Content | ISO 1172 | % | 30% Long Carbon Fiber |
| Density | ISO 1183 | g/cm³ | 1.23 |
| Tensile Strength | ISO 527 | MPa | 240 - 260 |
| Tensile Modulus | ISO 527 | GPa | 23.0 - 24.0 |
| Notched Impact Strength (23°C) | ISO 179 | kJ/m² | 37 - 40 |
| HDT (1.80 MPa) | ISO 75 | °C | 252 |
Processing Note: Higher Temp Required
PA66 Processing Alert:
- Melt Temp: Higher than PA6. Set barrel temps to 280°C - 300°C.
- Mold Temp: Critical for surface finish and crystallization. Use 80°C - 100°C.
- Drying: PA66 is highly hygroscopic. Dry at 85°C for 4-6 hours. Moisture content must be <0.2% to prevent hydrolysis.
Applications: When PA6 Isn't Enough
FAQ
Q: What is the main difference between PA6 CF30 and PA66 CF30?
A: Temperature Resistance. PA66 melts at ~260°C, while PA6 melts at ~220°C. If your part operates near an engine, generates frictional heat, or requires reflow soldering, PA66 CF30 is the safer choice to prevent deformation.
Q: Does carbon fiber reduce moisture absorption in PA66?
A: Yes. While PA66 naturally absorbs moisture (hygroscopic), filling it with 30% carbon fiber reduces the volume of polymer available to absorb water, improving dimensional stability in humid environments compared to unfilled Nylon 66.
Q: Is LFT-G® PA66 CF30 suitable for gears?
A: Excellent for gears. The long fibers resist fatigue from cyclic tooth loading, and carbon fiber provides self-lubrication, reducing wear and frictional heat generation better than glass-filled nylon.
Need High-Temp Performance? Partner with LFT-G®
From material selection to mold flow analysis, we support your transition to high-performance composites.
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