LFT-G® PP LGF50YD | High-Pressure PP GF50 for Industrial Pumps
LFT-G® 50% Long glass fiber PP (Copo) Pump Grade
For industrial fluid handling, standard PP GF50 often falls short. Under high internal pressure, short-fiber materials bulge (creep), leading to seal failures and leaks. LFT-G® PP-LGF50YD is the engineered solution. It is a 50% Long Glass Fiber reinforced Copolymer PP, specifically stabilized for hydrolysis resistance and extreme structural rigidity.
This grade bridges the gap between plastics and cast metals. The dense 50% long-fiber network creates a pressure-vessel quality structure, offering the burst strength needed for large pump housings while the copolymer base ensures resilience against water hammer and cavitation impacts.
- √ Extreme Burst Pressure Resistance: The 50% LGF skeleton locks dimensions in place, preventing deformation under high hydrostatic loads where SGF PP GF50 would fail.
- √ Hydrolysis & Chlorine Resistance: Specialized stabilization protects the polymer matrix from degradation in hot water, seawater, and chlorinated pool environments.
- √ Vibration Damping: Outperforms cast iron in noise reduction and vibration absorption, extending the life of seals and bearings in heavy-duty pumps.
Typical Material Properties (Pump Grade)
The following values are typical data for LFT-G® PP-LGF50YD (High Pressure/Water Grade) and are for reference only. Please contact us for the official Technical Data Sheet (TDS).
Mechanical Properties
| Property | Test Method | Value |
|---|---|---|
| Tensile Modulus | ISO 527 | 10,500 MPa |
| Tensile Strength | ISO 527 | 135 MPa |
| Tensile Strain at Break | ISO 527 | 2.3 % |
| Flexural Modulus | ISO 178 | 8,800 MPa |
| Notched Izod Impact (23°C) | ISO 180/A | 55 kJ/m² |
| Notched Izod Impact (-30°C) | ISO 180/A | 35 kJ/m² |
Thermal & Physical Properties
| Property | Test Method | Value |
|---|---|---|
| Density | ISO 1183 | 1.32 g/cm³ |
| HDT/A (1.8 MPa) | ISO 75 | 158 °C |
| HDT/C (8.0 MPa) | ISO 75 | 142 °C |
| Melting Temperature | ISO 11357 | ~163 °C |
| Mold Shrinkage (Flow) | ISO 294-4 | 0.1 - 0.3 % |
Processing Information
The following values are recommendations. We recommend desiccant / dry air dryers (moisture content below 0.1%).
To minimize fiber breakage and ensure optimal performance, a low-compression, general-purpose screw is highly recommended.
| Parameter | Recommendation |
|---|---|
| Drying Temperature | 80 - 100 °C |
| Drying Time | 2 - 4 hours |
| Melt Temperature (Nozzle ③) | 230 - 270 °C |
| Mold Temperature (Zone ②) | 40 - 80 °C |
| Back Pressure | Low (to minimize fiber damage) |
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