LFT-G® PP GF50 (CPP-NG05): The Metal Replacement Standard with 50% Long Glass Fiber
- High Impact: Long fiber skeletal network prevents brittleness common in high-filled short fiber compounds.
-
Maximum Stiffness: Flexural Modulus >11 GPa, rivaling magnesium and aluminum die-castings.
-
Hydrolysis Resistant: Unlike PA6 GF50, it does not absorb moisture, maintaining 100% strength in wet environments.
-
Cost Efficiency: Significantly lower density (1.32 g/cm³) and raw material cost compared to High-Performance Polyamides (PPA/PA66).
Scenario: When PA6 GF50 Absorbs Water
Feature-Advantage-Benefit: Engineers often choose Nylon (PA6) GF50 for heavy loads, but forget its weakness: water absorption. In humid conditions or outdoor use, Nylon swells and loses up to 40% of its stiffness. LFT-G® CPP-NG05 uses a Polypropylene matrix which is naturally hydrophobic (Feature). This allows the 50% Long Glass Fiber reinforcement to maintain consistent structural properties regardless of weather or humidity (Advantage). The benefit is a "set-it-and-forget-it" component reliability for outdoor, marine, or water-treatment applications, eliminating failures caused by moisture degradation.
Figure 1: PP LGF50 retains strength where Nylon fails due to moisture.
Quality: The 11 GPa Stiffness Barrier
Feature-Advantage-Benefit: Achieving 50% fiber content with Short Fibers usually results in a material that is stiff but shatters like glass. LFT-G® solves this using long-fiber pultrusion technology to create an entangled internal skeleton (Feature). This pushes the Flexural Modulus beyond 11,000 MPa (11 GPa) while retaining impact ductility (Advantage). This allows you to replace heavy steel inserts or expensive die-cast aluminum parts with a lightweight, injection-moldable plastic (Benefit), reducing vehicle weight and manufacturing energy costs.
Figure 2: Extreme stiffness without brittleness.
Technical Data Sheet (Model: LFT-G® CPP-NG05)
| Property | Test Standard | Unit | Typical Value |
|---|---|---|---|
| Base Resin | - | - | Polypropylene (PP) |
| Fiber Content | ISO 1172 | % | 50% Long Glass Fiber |
| Density | ISO 1183 | g/cm³ | 1.32 |
| Tensile Strength | ISO 527 | MPa | 145 - 156 |
| Tensile Modulus | ISO 527 | GPa | 10.0 - 11.5 |
| Flexural Strength | ISO 178 | MPa | 200 - 210 |
| Notched Impact Strength | ISO 179 | kJ/m² | 48 - 54 |
| HDT (1.80 MPa) | ISO 75 | °C | 160 |
Case Study: SUV Running Boards (Side Steps)
The Challenge
An off-road SUV manufacturer needed a material for the internal structural support of their side steps (running boards). The part had to support a 150kg load without bending, withstand rock impacts from the road, and resist UV/rain exposure. Steel was too heavy; Aluminum was too expensive.
The LFT-G® Solution
LFT-G® CPP-50%LGF (NG05) was the game changer. The 50% long glass fiber provided a flexural modulus >11 GPa, offering sufficient rigidity to support human weight with zero perceptible deflection. The PP matrix provided natural corrosion resistance against road salts and mud. The part weight was reduced by 60% compared to the original steel design.
Applications: Heavy-Duty Metal Replacement
FAQ
Q: Is PP GF50 better than PA6 GF50?
A: In wet conditions, yes. PA6 GF50 is stiffer when dry, but loses strength when it absorbs moisture. PP GF50 maintains its 11 GPa modulus regardless of humidity, making it more predictable for real-world environments.
Q: Is 50% glass fiber difficult to mold?
A: It requires specific settings. High glass content increases viscosity. You need larger gates, higher mold temperatures (60-80°C), and wear-resistant screws/barrels, but it flows surprisingly well compared to highly filled Nylons.
Q: What is the density of PP GF50?
A: Approximately 1.32 - 1.34 g/cm³. This is still significantly lighter than Aluminum (2.7 g/cm³) and lighter than PA6 GF50 (~1.56 g/cm³), offering the best stiffness-to-weight ratio in its class.
Solve Your Toughest Structural Challenges
Replace metal, reduce weight, and lower costs with LFT-G®.
Hot Tags: lft-g® pp gf50 (cpp-ng05) material, China, manufacturers, suppliers, factory, buy, customized
