PP LGF40 Composite | Optimal LFT Polypropylene | LFT-G®
PP LGF40: Optimized Long Glass Fiber Reinforced Polypropylene
PP LGF40 is an advanced 40% long glass fiber reinforced polypropylene composite engineered for applications requiring optimal balance between structural performance and manufacturing efficiency. With 40% glass fiber loading by weight, this material delivers 25% higher impact resistance than short-fiber composites while maintaining excellent flow characteristics for complex moldings. Ideal for semi-structural components in automotive, consumer electronics, and material handling systems.
Key Technical Properties
1. Mechanical Performance
- Tensile Strength: 140 MPa (ISO 527-2), 15–20% improvement over conventional LFT 30%LGF grades
- Flexural Modulus: 8,500–9,800 MPa (ISO 178), suitable for semi-structural applications
- Charpy Impact: 38–45 kJ/m² at 23°C (ISO 179), 30% higher than short glass fiber composites
2. Thermal Properties
- Heat Deflection Temp: 140–148°C @1.8 MPa (ISO 75)
- Coefficient of Thermal Expansion: 18–22 ×10⁻⁶/°C (ISO 11359)
3. Processing Advantages
- Mold Shrinkage: 0.2–0.5% (ISO 294-4)
- Melt Flow Index: 48–58 g/10 min (ISO 1133)
Competitive Advantages
1. Cost-Performance Balance
Delivers 85% of LGF50's mechanical properties at 70% material cost, with 20% faster cycle times in injection molding.
2. Enhanced Fiber Retention
Proprietary coupling technology maintains 6–8mm fiber length in final parts (ASTM D2584 verified).
3. Surface Finish Quality
Class A surface finish with Ra <1.6μm (ISO 4287), eliminating post-molding treatments.
Industrial Applications
1. Automotive Interior Systems
- Instrument panel carriers
- Door module structures
- HVAC housing components
2. Consumer Durables
- Power tool housings
- Lawn & garden equipment
- Furniture structural frames
| Industry | Components | Benefit |
|---|---|---|
| Automotive | Seat structures | Vibration damping |
| Electronics | Thin-wall enclosures | 0.8mm wall feasibility |
Technical Specifications
| Property | Test Standard | Value |
|---|---|---|
| Density | ISO 1183 | 1.22–1.25 g/cm³ |
| Tensile Strength | ISO 527-2 | 137-142 MPa |
| Flexural Modulus | ASTM D790 | 7,200–9,500 MPa |
| Charpy Impact (23°C) | ISO 179 | 32–44 kJ/m² |
| HDT (1.8MPa) | ISO 75 | 142–146°C |
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