PPA LCF50 – 50% Long Carbon Fiber PPA

High-Temperature Polyphthalamide • 50% Carbon Fiber • Engineered for Extreme Thermal & Structural Demands

Description

LCF30 PA12 Lightweight Structural Nylon LFT‑G^® PPA LCF50 is a 50% long carbon fiber reinforced polyphthalamide (PPA) compound engineered for extreme thermal and structural applications. The continuous‑fiber architecture delivers exceptional strength, creep resistance, and thermal stability - outperforming short‑fiber PPA and standard PA66 compounds in high‑load, high‑temperature environments.

With a heat deflection temperature exceeding 280°C and metal‑like stiffness, PPA LCF50 enables lightweight metal replacement in automotive powertrains, aerospace structures, and high‑density electronic connectors where reliability under heat and stress is non‑negotiable.

Core Strength

Ultra‑High Heat Resistance

Engineered for sustained performance in high-temperature environments, delivering reliable mechanical properties where standard engineering plastics fall short.

Exceptional Strength & Stiffness

The continuous carbon fiber network provides structural rigidity that rivals metal, enabling lightweight design without compromising load‑bearing capacity.

Ultra‑Low Moisture Uptake

Minimal water absorption ensures consistent dimensional stability and mechanical performance, even in humid or wet operating conditions.

Outstanding Creep & Fatigue Resistance

The three‑dimensional fiber architecture resists deformation under sustained loads and repeated stress, ensuring long‑term reliability in dynamic applications.

Performance Edge: Long Fiber vs. Short Fiber

PPA LCF50 (long carbon fiber) vs. PPA CF50 (short carbon fiber)

product-797-528

PPA LCF50 (Long Fiber) • PPA CF50 (Short Fiber) • Higher values indicate superior performance

Technical Data Sheet

Property	Value	Unit	Test Method
Density	1.45	g/cm³	ISO 1183
Tensile Strength	~265	MPa	ISO 527
Tensile Modulus	~18 500	MPa	ISO 527
Elongation at Break	~1.8	%	ISO 527
Flexural Strength	~390	MPa	ISO 178
Flexural Modulus	~17 200	MPa	ISO 178

Processing Guidelines – Injection Molding

PPA LCF50 processing parameters

Drying

120–140°C · 4–6 h
Moisture < 0.05%

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Injection

320–340°C melt
Medium speed

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Hold Pressure

60–85% of injection
Pressure · 3–6 s

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Cooling

Mold 120–150°C
Even cooling

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Demolding

Gentle ejection
Draft angle ≥ 1.5°

Processing Tips: Use a screw with L/D ≥ 20:1 and abrasion‑resistant barrel liners. Back pressure: 1.0–2.0 MPa. High mold temperature (130–150°C) is critical for achieving optimal crystallinity and surface finish. Avoid residence times exceeding 5 minutes at melt temperature to prevent degradation. Regrind up to 15% can be used with property verification.

PPA LCF50 Applications

Automotive Powertrain

PPA LCF50 delivers sustained performance above 180°C and robust resistance to aggressive fluids. Ideal for turbocharger components, EGR housings, transmission parts, and electric motor end caps.

High-Density Connectors

PPA LCF50 features ultra‑low warp, high‑temperature reflow compatibility and consistent dielectric properties. Well suited for SMT connectors, memory sockets, and high‑pin‑count backplane connectors.

Aerospace & Defense

PPA LCF50 combines high specific stiffness, lightweight construction, and resistance to aviation fuels, hydraulic fluids and thermal cycling. Perfect for lightweight structural brackets, actuator housings, and avionics enclosures.

Industrial high-load gears

Industrial High‑Load Gears

PPA LCF50 provides excellent wear resistance and reliable performance under continuous mechanical stress and elevated temperatures. Suitable for wear‑resistant gears, pump impellers, and compressor components for heavy‑duty machinery.

FAQ

Q: Why choose PPA LCF50 over PPA CF50 grades?

A: PPA LCF50 delivers dramatically higher heat resistance than PPA GF50. The continuous long carbon fiber network ensures superior creep resistance and fatigue endurance under sustained loads - making it the preferred choice for metal‑replacement in extreme environments.

Q: Can PPA LCF50 withstand continuous exposure to automotive fluids and high temperatures?

A: Absolutely. PPA LCF50 exhibits outstanding resistance to engine oils, transmission fluids, coolants, and brake fluids. Its continuous service temperature of 180°C allows reliable performance in turbocharger environments and under‑hood applications where other engineering plastics fail prematurely.

Q: What injection molding equipment is recommended for PPA LCF50?

A: Standard injection molding machines with wear‑resistant barrel and screw components are suitable. We recommend a low‑compression metering screw (L/D 20:1–22:1) and generous gating to minimize fiber breakage. Precise mold temperature control (130–150°C) is essential for achieving optimal crystallinity, surface gloss, and dimensional precision.