LFT-G Polypropylene PP reinforced materials filled high mechanical properites

PP (Polypropylene) Reinforced with Long Glass Fiber

Polypropylene (PP) is one of the most widely used general-purpose thermoplastics, known for its low cost, excellent chemical resistance, and good processability. However, its inherent limitations—such as low strength, low heat resistance, poor stiffness, and weak low-temperature impact performance—restrict its use in structural applications.

By introducing reinforcing materials such as glass fibers, the mechanical properties of PP can be significantly enhanced. When the fiber length exceeds the critical reinforcement size, the material performance improves dramatically.

Long Glass Fiber Reinforced PP (LFT-PP) is a high-performance thermoplastic composite, typically supplied in pellet form with a length of 12–25 mm and a diameter of about 3 mm. The glass fibers inside maintain nearly the same length as the pellets, ensuring superior load transfer and mechanical strength.

Fiber content can range from 20% to 70%, and colors can be customized according to customer requirements.

Advantages of PP-LGF

• Long fiber length significantly improves mechanical strength and stiffness
• High impact resistance, suitable for automotive and furniture applications
• Excellent creep resistance and dimensional stability for precision parts
• Superior fatigue resistance under long-term loading
• Stable performance in high temperature and humid environments
• Reduced fiber breakage during molding due to optimized processing flow

LGF vs SGF

Compared with short glass fiber (SGF) reinforced materials, long glass fiber (LGF) composites provide:

• Higher mechanical strength and toughness
• Better load-bearing capacity
• Improved fatigue and creep resistance
• More stable performance in structural applications

Applications

Automotive Industry: front-end modules, door modules, gearshift systems, electronic pedals, instrument panel frames, cooling fan systems, battery trays, bumper brackets, underbody shields, sunroof frames, etc.

Home Appliance Industry: washing machine drums, structural brackets, air conditioner fan systems, replacing metal or short glass fiber reinforced materials.

Electrical & Electronics: connectors, relay bases, coil frames, microwave transformer housings, solenoid valve components, scanner parts, etc.

Other Applications: power tools, pump housings, bicycle frames, ski components, helmet structures, safety footwear parts, replacing PA, PPO and metal materials.

Processing

Certification

About Us

Xiamen LFT Composite Plastic Co., Ltd. was established in 2009 and is a global supplier specializing in long fiber reinforced thermoplastic materials. We integrate R&D, production, and global marketing.

Our products have passed ISO 9001 and IATF 16949 certifications and are widely used in automotive, aerospace, military, new energy, medical devices, wind energy, sports equipment, and industrial applications.