LFT-G® PP GF30 Black (Model: LFT-PP-GF30-BG03) is a specialized 30% long glass fiber reinforced polypropylene homopolymer. Formulated in deep black, this grade resolves the aesthetics flaw of traditional fiberglass composites while offering a stiff 5,500 MPa tensile modulus for rugged structural frames.
√Deep Black Surface Finish
√Optimized short PP GF30 Alternative
√Low Injection Warp & Shrinkage
√Lightweight Aluminum Alternative
LFT-G® Black PP GF30 (LGF30) Structural Component Polymer
Unlike common brittle short-fiber pp gf30, our pellets utilize continuous pultrusion tech to imbed a 10-12mm internal long fiber skeleton. This ensures high energy absorption and anti-warping characteristics, establishing this material as the standard metal replacement for high-visibility industrial parts.
Engineering Decision Matrix: Short Fiber vs. LFT-G® BG03
Why do premium OEMs discard standard short PP GF30 compounds for high-stress applications? Here is the physical mechanism breakdown.
Failure Symptom
Standard Short PP GF30
LFT-G® PP LGF30 (BG03)
Dimensional Warpage
High differential shrinkage.
Large flat industrial covers distort and twist post-molding.
√ Isotropic 3D fiber mesh forces uniform shrinkage.
√ Zero warping in flat geometries.
Surface Aesthetics
Severe "floating fibers" showing white streaks on the black cosmetic surfaces.
√ Special black resin wetting matrix hides glass strands for a rich, uniform black finish.
√ Long fibers absorb and dissipate crack propagation paths.
Typical Material Properties (LFT-PP-GF30-BG03)
Data evaluated under Dry-As-Molded (DAM) conditions. Values are typical metrics for 30% black long-glass polypropylene and are intended for material selection references.
The following values are standard processing recommendations. To protect the critical 30% long glass fiber network from shearing and fiber attrition, always use a low-compression screw, back pressure under 50 psi, and generous gating.
Parameter
Recommendation
Drying Temperature
80 - 100 °C
Drying Time
2 - 3 hours
Rear / Feed Zone (Zone ①)
200 - 220 °C
Center / Melt Zone (Zone ②)
220 - 250 °C
Front / Nozzle Temp (Zone ③)
230 - 250 °C
Mold Temperature
40 - 80 °C
Target Downstream Case Applications
Industrial Fan Blades & Ventilation Housings
HVAC systems require aerodynamic parts that resist creep deformation under continuous rotational stresses. LFT-G® black pp gf30 provides the perfect matte-black cosmetic finish combined with balanced dynamic modulus to ensure quiet, warp-free performance over thousands of operating hours.
Automotive Under-Hood Components & Trays
Engine brackets and battery cradles undergo heavy thermal fluctuations and oil exposures. Switching to our homopolymer-based LFT-G® compound maintains a crisp flexural strength while dropping part cost substantially compared to heavy cast zinc or expensive filled polyamides.
Frequently Asked Questions (FAQ)
Q: Does LFT-G® PP GF30 Black resolve the "floating fiber" surface issue?
A: Yes. Traditional short fiberglass composites often leave ugly silver-white glass streaks on black parts. The LFT-PP-GF30-BG03 formulation introduces a specialized coupling agent that optimizes fiber encapsulation, ensuring a uniformly deep black surface straight from the mold.
Q: Can it directly drop into molds designed for standard short PP GF30?
A: Yes, the shrinkage rate (0.2-0.3%) closely mimics standard compounds, making tool alterations minimal. However, to maintain the structural advantages of long fibers, ensure the injection pressure and screw RPM are set low to minimize mechanical shearing.
Technical Backing by LFT-G® Experts
Accelerate your project verification. Our dedicated engineering team works collaboratively with global OEMs, providing tailor-made pultrusion solutions, detailed mold-flow reports, and exact data verification for demanding environments.
