PP+LGF40 Long Glass Fiber Reinforced Polypropylene

High-Stiffness Lightweight Structural Material for Automotive & Industrial Applications

In the development of automotive lightweighting, chassis structures, battery pack brackets, and large load-bearing structural components, PP+LGF40 (40% Long Glass Fiber Reinforced Polypropylene) is classified as a highly filled long glass fiber modified polyolefin material.

With its ultra-high stiffness, excellent creep resistance, high load-bearing capability, and lightweight properties, it can replace certain PA6-GF30 structural components.

This article systematically analyzes the material from multiple dimensions, including material definition, composition performance, overall characteristics, injection molding process, typical applications, and mechanical properties, providing valuable reference for automotive material selection and structural design.

1. Material Definition

PP+LGF40 is a high-performance structural plastic based on copolymer polypropylene reinforced with 40% long glass fiber. Compared with PP+LGF20, the higher glass fiber content provides comprehensive improvements in stiffness, strength, fatigue resistance, and creep resistance.

Compared with conventional short glass fiber PP+GF materials, the long fibers maintain a continuous entangled structure, resulting in superior long-term load-bearing capability and dimensional stability.

2. Core Performance Advantages

3. Inherent Material Limitations

4. Injection Molding Parameters

5. Typical Applications

7. Material Summary

PP+LGF40 is a high-performance structural material based on highly filled long glass fiber reinforced polypropylene. It offers outstanding advantages including high modulus, high load-bearing capability, excellent creep resistance, low moisture absorption, lightweight properties, and cost efficiency.

It can widely replace PP+LGF20 in high-load applications and can also substitute PA6-GF30 in non-high-temperature environments to achieve both weight reduction and cost reduction.