PPA‑LCF30 – Long Carbon Fiber Reinforced Polyphthalamide
30% long carbon fiber reinforcement delivers high stiffness, creep resistance, and structural strength to the PPA matrix. The compound offers sustained mechanical performance at elevated temperatures, with moisture absorption significantly lower than standard polyamides. Dimensional stability is maintained in humid or wet environments, and the material retains rigidity under sustained or cyclic loading.
These characteristics make LFT-G® PPA LCF30 suitable for automotive under‑hood components, aerospace structural parts, and precision mechanical systems. The material resists fuels, coolants, and common industrial solvents. It provides a lightweight alternative to die‑cast metals and thermosets, reducing weight while maintaining tight tolerances in high‑temperature applications.
Why PPA‑LCF30?
- Exceptional Heat Resistance – Engineered for applications where conventional engineering plastics struggle to maintain long-term performance.
- Low Moisture Absorption – Delivers stable dimensions and consistent mechanical properties throughout varying environmental conditions.
- High Specific Stiffness & Strength – Combines high stiffness with lightweight construction, enabling designers to replace heavier metal components.
- Excellent Creep & Fatigue Resistance – The continuous long carbon fiber network helps preserve strength during prolonged service and cyclic loading.
- Broad Chemical Compatibility – Suitable for components operating around oils, coolants, fuels, and other industrial chemicals.
Key Application Areas
Components
Thermostat housings, oil pump gears, turbocharger actuators, and EGR components. LFT-G® PPA LCF30 sustains continuous exposure to 150°C+ under‑hood temperatures with minimal creep, outperforming PA66 and aluminum in fatigue life.
High‑Density Connectors & Sensor Housings
With dielectric strength exceeding 20 kV/mm and stable electrical properties across humidity and temperature, LFT-G® PPA LCF30 is ideal for automotive ECU connectors, industrial sensor enclosures, and high‑pin‑count backplane connectors.
Precision Gears & Motion Control
Spur gears, bevel gears, cam followers, and lead screws benefit from LFT-G® PPA LCF30's high flexural modulus and low coefficient of thermal expansion. The long carbon fiber network provides superior load‑bearing capacity and resistance to cyclic fatigue, extending service life in robotics.
Injection Molding – Quick Reference
This injection molding quick reference sheet is specially formulated for LFT long fiber reinforced thermoplastic materials. All recommended parameters and equipment configurations focus on low-shear molding.
The metering screw with an 18:1–22:1 L/D ratio, large open nozzle and free-flow check valve greatly reduce fiber breakage. It can preserve complete fiber length and secure the mechanical strength of finished products.
Standardized pre-drying, stable melt temperature and high mold temperature help eliminate bubbles and floating fiber defects on parts. Please purge the barrel with PE or PP before shutdown to avoid material carbonization and nozzle clogging.
- Pre‑drying: 3‑5 hrs @ 120‑130°C (desiccant dryer)
- Melt Temperature: 310‑340°C
- Mold Temperature: 120‑150°C
- Injection Pressure: 80‑150 MPa
- Screw L/D: 18:1‑22:1, metering type
Note: Use a large open nozzle and a free‑flow check valve to minimize fiber breakage. Purge with PE or PP before shutdown.
FAQ
Q: What applications are suitable for PPA LCF30?
A: LFT-G® PPA LCF30 is suitable for high‑temperature structural components, automotive under‑hood parts, aerospace brackets, precision gears, and fluid handling systems where sustained heat resistance, low moisture absorption, and dimensional stability are required. It is commonly used to replace metal housings and thermoset components.
Q: Can PPA LCF30 replace aluminum or metal components?
A: Yes. LFT-G® PPA LCF30 offers a high strength‑to‑weight ratio and excellent creep resistance at elevated temperatures, making it a viable alternative to die‑cast aluminum and machined metals in applications requiring weight reduction, corrosion resistance, and simplified injection molding.
Q: What is the difference between PPA LCF30 and PA12 LCF30?
A: LFT-G® PPA LCF30 provides significantly higher heat deflection temperature and lower equilibrium moisture absorption than PA12‑LCF30, while maintaining comparable stiffness and strength. PPA‑based compound is better suited for continuous high‑temperature exposure and precision applications where thermal stability is critical.
Contact: Emily
Email: sale04@lfrtplastic.com
WhatsApp / Mobile: +86 188 5034 4811
Hot Tags: thermal grade engineered ppa lcf30 | lft-g, China, manufacturers, suppliers, factory, buy, customized
