LFT-G® Long Fiber Reinforced Polypropylene for Automotive Underbody Shields
Ultimate Underbody Protection: High-Impact PP LGF40 for Automotive Shields
The underside of a vehicle is constantly exposed to harsh conditions, including impacts from road debris, water, salt, chemicals, and temperature variations. Effective underbody shielding is vital for protecting critical components and enhancing vehicle longevity and performance. LFT-G® PP LGF40 emerges as a high-performance material solution for crafting robust and durable automotive underbody shields. By incorporating 40% continuous long glass fibers into a high-quality polypropylene matrix, LFT-G® PP LGF40 delivers exceptional impact resistance, high stiffness, and excellent resistance to the challenging under-vehicle environment. This specialized grade of LFT PP LGF40 is expertly formulated to absorb energy from impacts, preventing damage to sensitive parts like the engine oil pan, transmission, exhaust system, and battery pack (in EVs). Its inherent resistance to water, road salts, fuels, and other automotive fluids ensures long-term durability and corrosion prevention. Furthermore, LFT-G® PP LGF40's lightweight nature contributes to overall vehicle efficiency, while its dimensional stability helps maintain aerodynamic properties and consistent fit. The excellent moldability allows for complex shapes that can optimize airflow and integrate mounting features.
Key Advantages of LFT-G® PP LGF40 for Automotive Underbody Shields
- Exceptional Impact Resistance: Provides robust protection against impacts from road debris, stones, gravel, and other hazards encountered during driving.
- High Stiffness and Strength: Creates a rigid barrier that effectively protects sensitive underbody components from physical damage.
- Superior Environmental Resistance: Highly resistant to water, road salts, automotive fluids, and temperature extremes, ensuring long-term durability in harsh conditions.
- Lightweight Design: Contributes to overall vehicle weight reduction, enhancing fuel efficiency and reducing emissions (or extending EV range).
- Corrosion Prevention: Unlike metal shields, plastic does not corrode, providing reliable long-term protection without degradation.
- Dimensional Stability: Maintains shape and fit across varying temperatures and humidity, ensuring consistent protection and potentially contributing to aerodynamics.
- Design Flexibility: Allows for the creation of complex, aerodynamically optimized shapes with integrated mounting points and features.
By choosing **LFT-G® PP LGF40** for your automotive underbody shields, you are investing in a material that delivers a superior combination of protection, durability, and lightweight performance in the most challenging automotive environment. Our specialized LFT PP grades empower automotive manufacturers to develop underbody shields that are stronger, lighter, more resistant to impacts and environmental factors, and contribute to enhanced vehicle safety and efficiency. Explore the possibilities and partner with us to engineer the next generation of high-performance automotive underbody protection solutions.
For more technical data, please refer to the specification below, or
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LFT-G® PP LGF40 Technical Data Sheet for Automotive Underbody Shields
This document provides technical data for a 40% Long Glass Fiber reinforced Polypropylene (LFT-G® PP LGF40) material, specifically engineered for demanding automotive underbody shield applications. This grade is designed to provide robust protection against environmental hazards and road debris while contributing to vehicle lightweighting. The data presented here is based on typical values obtained from international material suppliers and standards. Please refer to the specific datasheet of your program for precise LFT material values.
Mechanical Properties
| Property | Value | Unit | Test Standard |
|---|---|---|---|
| Tensile Strength | 150-180 | MPa | ISO 527-1 |
| Tensile Modulus | 7500-9000 | MPa | ISO 527-1 |
| Elongation at Break | 1.7-2.5 | % | ISO 527-1 |
| Flexural Strength | 180-220 | MPa | ISO 178 |
| Flexural Modulus | 6550-8000 | MPa | ISO 178 |
| Notched Izod Impact Strength (+23°C) | 32-54 | kJ/m² | ISO 180/1A |
| Notched Izod Impact Strength (-30°C) | 30-53 | kJ/m² | ISO 180/1A |
Thermal Properties
| Property | Value | Unit | Test Standard |
|---|---|---|---|
| Melting Temperature | 210-250 | °C | ISO 11357 |
|
Heat Deflection Temperature (HDT/A, 1.8 MPa) |
150-160 | °C | ISO 75-1 |
| Coefficient of Linear Thermal Expansion | 4-6 | x 10-5/K | ISO 11359 |
Other Properties
| Property | Value | Unit | Test Standard |
|---|---|---|---|
| Density | 1.20-1.22 | g/cm³ | ISO 1183 |
| Flammability (UL 94) | HB or V-2 (depending on grade) | - | UL 94 |
| Moisture Absorption (24 hours) | <0.05 | % | ISO 62 |
| Shrinkage Rate (Mold Shrinkage) | 0.5-1.0 | % | ASTM D-955 |
| Creep Resistance (at specific temp/load) | Good | - | ISO 899 |
Chemical Resistance (Typical)
LFT-G® PP LGF40 exhibits good to excellent resistance to the following substances relevant to automotive underbody environments:
- Water and Humidity - Excellent
- Road Salts - Excellent
- Battery Acid (Diluted) - Good
- Engine Oils and Greases - Fair to Good
- Fuels - Good
- Coolants (Glycol-based) - Good
Processing Information (Typical)
Recommended processing conditions for LFT-G® PP LGF40 for injection molding of automotive underbody shields:
- Melt Temperature: 200-240 °C
- Mold Temperature: 30-60 °C
- Injection Speed: Medium to High (optimized for fiber length retention and filling large, thin-wall parts)
- Holding Pressure: Optimized to minimize warpage and ensure flatness and stiffness
Notes and Supplementary Information:
Data Source: This data is compiled based on typical values for PP LGF40 from international material manufacturers and standards. Creep resistance is a typical performance characteristic. **LFT-G® PP LGF40 offers an excellent balance of high impact resistance, stiffness, lightweighting, and crucial resistance to the harsh under-vehicle environment including moisture, salts, and various automotive fluids. These properties make it a highly suitable material for effective and durable automotive underbody shields, contributing to vehicle safety and longevity.** Please consult specific regulatory compliance documentation relevant to automotive underbody protection. For precise and specific data for your program, please consult the datasheet provided by your material supplier.
Download Complete LFT Data Sheet PDF
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