PPA-LGF | Long Glass Fiber Reinforced Polyphthalamide (High Temperature Nylon)

PPA-LGF (Long Glass Fiber Reinforced Polyphthalamide) is a high-performance engineering thermoplastic designed for high-temperature, high-load, and metal replacement applications. As a semi-aromatic high temperature nylon, PPA-LGF offers superior mechanical strength, thermal stability, and dimensional accuracy compared to conventional PA6 and PA66.

What is PPA (Polyphthalamide)?

PPA, short for Polyphthalamide, is a semi-aromatic polyamide containing more than 55% aromatic diacid such as terephthalic acid or phthalic acid. Due to its molecular structure, PPA is commonly referred to as aromatic high temperature nylon.

Compared with traditional aliphatic nylons (PA6, PA66), PPA engineering plastics demonstrate higher heat resistance, lower moisture absorption, better chemical resistance, and improved dimensional stability, making them ideal for demanding industrial and automotive environments.

Why Choose Long Glass Fiber Reinforced PPA (PPA-LGF)?

Long glass fiber reinforced PPA combines the inherent thermal performance of polyphthalamide with continuous fiber reinforcement, resulting in a material capable of replacing metal in high-temperature structural applications.

Compared with short glass fiber reinforced PPA compounds, PPA-LGF materials offer:

• Higher impact resistance and toughness
• Improved fatigue and vibration resistance
• Better load-bearing and structural strength
• Enhanced creep resistance at elevated temperatures
• Lower density with higher specific strength

These advantages make PPA-LGF one of the most effective metal replacement plastics in the field of high-performance engineering thermoplastics.

PPA-LGF Material Properties & Performance Advantages

PPA-LGF engineering plastics provide an excellent balance of mechanical, thermal, and chemical properties, ensuring stable performance in long-term service conditions.

• High stiffness and rigidity
• Excellent high temperature resistance
• Low water absorption and excellent dimensional stability
• Low warpage for precision molded parts
• Strong chemical and corrosion resistance
• Outstanding fatigue and creep resistance

Typical Applications of PPA-LGF

Thanks to its ability to withstand high temperatures, high loads, and harsh environments, PPA-LGF materials are widely used in automotive, industrial, and electrical applications.

Automotive Applications

• Engine covers and structural engine components
• Transmission system parts and bearing cages
• Air intake systems and exhaust control components
• Electrical connectors, switches, and sensor housings

Industrial & Electrical Applications

• Motor components and housings
• Circuit breakers and electrical enclosures
• High temperature mechanical parts
• Structural components requiring long-term reliability

Other Long Fiber Reinforced Thermoplastic Materials

In addition to PPA-LGF, we also offer a full range of long fiber reinforced thermoplastics, including PP-LGF, PA6-LGF, PA66-LGF, PPS-LGF, and long carbon fiber reinforced materials.

About Xiamen LFT Composite Plastics Co., Ltd.

Xiamen LFT Composite Plastics Co., Ltd. is a professional manufacturer of long fiber reinforced thermoplastics (LFT & LFRT), specializing in long glass fiber and long carbon fiber reinforced engineering plastics.

Our materials are suitable for injection molding, extrusion molding, and LFT-D compression molding. Fiber length can be customized from 5 mm to 25 mm according to application requirements.

Our continuous fiber impregnation technology complies with ISO 9001 and IATF 16949 quality management systems. All products are supported by proprietary technology, patents, and registered trademarks.

What We Offer

• Technical data and material selection support for PPA-LGF
• Structural design and mold-front optimization recommendations
• Injection molding and extrusion processing support