PP LGF40 Material | High-Performance Thermoplastic Composite | LFT-G®
LFT-G®PP LGF40 Material: Engineering-Grade Long Glass Fiber Reinforced Polypropylene

Material Science Innovation
Our PP LGF40 represents the pinnacle of polymer engineering, combining isotactic polypropylene matrix with precisely aligned 12mm long glass fibers. This advanced composite delivers:
Fiber-Matrix Synergy
The 40% glass fiber loading (by weight) creates a three-dimensional reinforcement network. Each fiber strand (10-12μm diameter) interacts with the PP matrix through:
- Mechanical interlocking at microscale surface imperfections
- Optimized interfacial bonding via maleic anhydride grafted PP
- Fiber orientation control during injection molding
Production Excellence
Manufactured using twin-screw extrusion process with:
- Barrel temperature profile: 190°C-230°C
- Fiber length preservation >90%
- Moisture content <0.05%
Comprehensive Technical Specifications(LFT-G® PP LGF40 Data Sheet)
| Property | Value | Test Method | Industry Benchmark |
|---|---|---|---|
| Tensile Strength | 141 MPa | ISO 527 | +40% vs standard PP |
| Flexural Modulus | 6,900 MPa | ISO 178 | Superior stiffness |
| Impact Strength (Notched) | 39 kJ/m² | ISO 179 | 3x improvement |
| Heat Deflection Temp (1.8MPa) | 158°C | ISO 75 | +25°C over PA6 |
| Coefficient of Thermal Expansion | 3.5×10⁻⁵ /°C | ISO 11359 | Metal-like stability |
Success Story: Automotive Battery Tray

EV New Energy Battery Tray By our LFT-G® CPP-LGF40 AR Grade
Challenge
- Weight reduction requirement: 30%
- Vibration resistance: >15Hz
- Chemical resistance: Battery acid exposure
PP LGF40 Solution

- 28% weight reduction achieved
- Natural frequency: 18.3Hz
- 0% dimensional change after 1000h chemical exposure
Sustainable Material Solution
Environmental Benefits
- 100% recyclable material
- 35% lower CO₂ footprint vs aluminum
- Regrind compatibility up to 5 cycles
Certifications
Our Certificate

IATF 16949:2016
RoHS Directive 2015/863
ISO 9001:2015
REACH Compliance
FDA
Processing Guidelines
Injection Molding Parameters
| Parameter | Value Range |
|---|---|
| Melt Temperature | 220-260°C |
| Mold Temperature | 60-80°C |
| Injection Pressure | 800-1200 bar |
Tooling Design Tips
- Gate size: Minimum 2mm thickness
- Flow length ratio: 150:1 maximum
- Vent depth: 0.015-0.03mm
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