LFT-G® PP GF20 (CPP-NG02): Dimensional Stability with 20% Long Glass Fiber
- Zero Warpage Solution: Long fiber network stabilizes large parts, solving the shrinkage issues of standard PP GF20.
- High Impact Toughness: 10-12mm fiber length bridges cracks, preventing catastrophic failure upon impact.
- Lightweight Champion: Density of ~1.04 g/cm³ makes it 15% lighter than reinforced Nylon/ABS.
- Cost-Effective: The perfect balance of performance and price for high-volume automotive and appliance parts.
Scenario: The "Big Part" Warpage Problem
Feature-Advantage-Benefit: LFT-G® CPP-NG02 utilizes a 20% Long Glass Fiber reinforcement structure that creates an internal skeletal network within the polypropylene matrix. This unique structure restricts anisotropic shrinkage during cooling, giving it a distinct advantage over short fiber PP GF20 which tends to warp and bow in large, flat components. The direct benefit to your production line is the ability to mold large automotive door panels or appliance housings with perfect dimensional accuracy, significantly reducing scrap rates caused by deformation and eliminating the need for expensive post-mold fixturing.
Figure 1: LGF20 maintains flatness in large surface areas.
Quality: Impact Resistance on a Budget
Feature-Advantage-Benefit: Our proprietary pultrusion process ensures that fiber lengths in the pellet remain at 10-12mm, compared to the <1mm length found in standard PP GF20. This extended fiber length acts like a net that bridges micro-cracks upon impact, dissipating energy throughout the part rather than allowing it to shatter. For manufacturers, this means delivering a safer, more durable product that passes rigorous drop tests and crash simulations, all while maintaining the low material cost of a polypropylene-based solution.
Figure 2: Long fibers network prevent shattering under impact.
Technical Data Sheet (Model: LFT-G® CPP-NG02)
| Property | Test Standard | Unit | Typical Value |
|---|---|---|---|
| Base Resin | - | - | Polypropylene (PP) |
| Fiber Content | ISO 1172 | % | 20% Long Glass Fiber |
| Density | ISO 1183 | g/cm³ | 1.04 |
| Tensile Strength | ISO 527 | MPa | 108 - 118 |
| Tensile Modulus | ISO 527 | GPa | 5.5 - 5.9 |
| Flexural Strength | ISO 178 | MPa | 134 - 138 |
| Notched Impact Strength | ISO 179 | kJ/m² | 32 - 36 |
| HDT (1.80 MPa) | ISO 75 | °C | 156 |
Case Study: Washing Machine Drum Spider
The Problem
A leading home appliance manufacturer was using die-cast aluminum for the washing machine drum spider (the support arm behind the drum). The aluminum parts suffered from corrosion due to detergents and water, leading to failure after 3-5 years.
The LFT-G® Solution
LFT-G® CPP-20%LGF (NG02) was implemented. The 20% long glass fiber provided sufficient fatigue strength to handle the high RPM spin cycles. Unlike metal, PP is completely immune to detergent corrosion. The switch reduced the part weight by 40% and total manufacturing cost by 30% by eliminating machining and anti-corrosion coating steps.
Applications: Lightweighting & Cost Reduction
People Also Ask (Google PAA)
Q: What is the difference between PP GF20 and PP LGF20?
A: Impact and Warpage. Both have 20% glass, but LGF20 (Long Glass Fiber) has fibers 10x longer. This prevents the part from warping during cooling and significantly increases impact strength (toughness) compared to brittle short fiber GF20.
Q: Is LFT-G® PP GF20 suitable for outdoor use?
A: Yes, with UV stabilization. Polypropylene requires UV additives for outdoor exposure. We can customize the NG02 grade with UV stabilizers (f1 rating) for automotive exterior parts like side mirror housings.
Q: Can I paint parts made of PP LGF20?
A: PP has low surface energy, so it usually requires surface treatment (flame or plasma) before painting. However, LFT-G® LGF20 provides a very smooth surface finish for a fiber-reinforced material, making it easier to achieve Class-A surfaces.
Start Your Lightweighting Project
Contact us for data sheets, samples, and technical support on long fiber molding.
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