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長ガラス繊維入りポリプロピレン強化プラスチックペレット

学年： General grade, Heat-resistant grade, UV-resistant grade, Toughen resistant grade

Fiber specification: 20%-70%

商品番号。:
PP-NA-LGF
お支払い:
T/T or L/C (other payment ways also can be di
製品の起源:
Xiamen, China
色:
Original color (also can be customized)
出荷ポート:
Xiamen, China

今すぐお問い合わせ

製品の詳細

PP長ガラス繊維強化熱可塑性プラスチック（PP-LGF）

Long Glass Fiber Reinforced Polypropylene (PP-LGF) is a high-performance thermoplastic composite engineered for structural applications requiring superior strength, stiffness, and long-term durability.

By combining polypropylene with long glass fibers, PP-LGF delivers an optimal balance of lightweight design, mechanical performance, and cost efficiency—making it an ideal alternative to short glass fiber plastics and metal components.

What Is Polypropylene (PP)?

Polypropylene (PP) is one of the most widely used general-purpose plastics, offering excellent chemical resistance, good processability, and competitive cost performance.

However, unmodified PP has limitations such as relatively low strength, stiffness, and impact resistance at low temperatures. To meet demanding structural requirements, PP is commonly reinforced with fibers.

Tensile strength: 20–30 MPa
Flexural strength: 25–50 MPa
Flexural modulus: 800–1500 MPa

What Is Long Glass Fiber?

Glass fiber is an inorganic, non-metallic reinforcing material known for high mechanical strength, heat resistance, corrosion resistance, and electrical insulation.

Long glass fiber typically refers to fibers longer than 10 mm, forming a stronger internal reinforcement network compared with short fibers.

PP-LGF: Long Glass Fiber Reinforced Polypropylene

PP-LGF is a modified polypropylene composite reinforced with long glass fibers ranging from 10 to 25 mm. After injection molding, the retained fiber length in the final part typically exceeds 3.1 mm, forming a stable three-dimensional structure.

This structure significantly enhances mechanical performance, creep resistance, and dimensional stability, even under long-term load or harsh environments.

High stiffness and strength
Excellent impact resistance
Superior creep resistance
Outstanding dimensional stability
Suitable for complex, integrated designs

Why Choose Long Glass Fiber Instead of Short Glass Fiber?

Comparison of particle-filled, short glass fiber, and long glass fiber composites — Composite structure comparison: particle-filled, short fiber, and long fiber reinforcement

Compared with short fiber reinforced thermoplastics, long fiber thermoplastic (LFT) materials provide clear advantages in load-bearing and structural applications.

Significantly improved mechanical properties due to longer fiber length
High specific stiffness and strength
Excellent impact resistance, ideal for automotive applications
Improved creep resistance and dimensional accuracy
Outstanding fatigue resistance
Better stability in hot and humid environments
Reduced fiber damage during the molding process

Internal fiber structure of long glass fiber reinforced thermoplastics

Typical Applications

Automotive Industry

PP-LGF is widely used in structural and semi-structural automotive components, replacing metal or reinforced polyamide materials.

Applications include front-end modules, door modules, gear shift systems, accelerator pedals, instrument panel carriers, cooling fan frames, battery carriers, bumper brackets, underbody protection plates, and sunroof frames.