Name: Long Glass Fiber Polypropylene Composites (PP LGF)|Supplier LFT-G
Brand: LFT-G
SKU: 30268129

PP-LGF Composite Grade Matrix & 3D Fiber Network

Long glass fiber reinforced polypropylene (PP-LGF) composites are engineered thermoplastic materials designed to bridge the performance gap between short fiber thermoplastics and die-cast metals. During injection molding, continuous 10–12 mm glass fibers intertwine to build an internal 3D skeletal fiber network within the component. This network distributes mechanical loads evenly, imparting superior tensile stiffness, fatigue endurance, and dimensional stability with ultra-low isotropic warpage.

[Learn more: Technical Principles of Long Glass Fiber Technology →]

Comparative Property Matrix (LFT-G^® PP LGF Series)

The mechanical metrics listed below illustrate typical Dry-As-Molded (DAM) performance data recorded inside the LFT-G^® Testing Laboratory across commercial glass fiber loadings per ISO standards.

Polymer Grade	Fiber Content	Density (ISO 1183)	Tensile Modulus	Flexural Strength	Charpy Impact	HDT (1.80 MPa)
LFT-PP-LGF20	20% Long Glass	1.04 g/cm³	5,300 MPa	105 MPa	29 kJ/m²	152 °C
LFT-PP-LGF30	30% Long Glass	1.11 g/cm³	6,800 MPa	114 MPa	32 kJ/m²	155 °C
LFT-PP-LGF40	40% Long Glass	1.21 g/cm³	8,900 MPa	135 MPa	35 kJ/m²	158 °C
LFT-PP-LGF50	50% Long Glass	1.33 g/cm³	11,900 MPa	149 MPa	43 kJ/m²	159 °C
LFT-PP-LGF60	60% Long Glass	1.45 g/cm³	13,900 MPa	158 MPa	47 kJ/m²	158 °C

Download LFT-G^® PP LGF Composite Datasheets (PDF)

Specialty Application Cases & Custom Value

Automotive tailgate and sunroof frame molded from LFT-G® PP LGF30 high flow composite

Automotive Tailgates & Sunroof Frames

Automotive tailgates, sunroof frames, and tank bracket modules require high melt flow coupled with isotropic dimensional stability. Specifying high-flow LFT-G^® PP-LGF30 allows tier-1 automotive suppliers to mold thin-walled structural panels without aesthetic surface sink marks. Replacing multi-piece metal weldments with single-shot composite moldings trims total assembly weight by 35% while eliminating atmospheric rusting and galvanic joint failure.

High spin washing machine drum support molded from LFT-G® PP LGF50 high stiffness composite

Commercial Washer Tub Supports & Brackets

Washing machine outer tub carriers, triangle brackets, and vacuum cleaner motor housings undergo continuous high-speed rotation under hot water detergent immersion. Utilizing LFT-G^® PP-LGF50 provides an ultra-high 11,500 MPa tensile modulus to withstand dynamic imbalance forces. The hydrophobic polypropylene matrix retains zero moisture swelling (≤0.03%), outperforming short-fiber compounds by preventing shaft misalignment and bearing wear.

Flame retardant UL94 V0 and UV resistant industrial tool housing molded from PP LGF

Weathering & Flame-Retardant Industrial Tool Housings

Heavy-duty power tool casings, lawnmower decks, and outdoor fluid control valves must survive drop impact under freezing temperatures and direct solar radiation. Custom modified LFT-G^® PP LGF composites incorporating halogen-free Flame Retardant (UL94 V-0) and UV-stabilizers deliver high impact strength and self-extinguishing safety, ensuring long-term outdoor operation without surface chalking or brittle cracking.

Processing Guidelines & Tailored Formulations

Optimizing injection molding processing parameters ensures that the 3D continuous glass fiber network remains intact during plastication. Our compounding laboratory specializes in tailored property modifications including Halogen-Free Flame Retardant (UL94 V-0), Long-Term Heat Aging Stabilization, UV Weathering Protection, High Melt Flow Enhancement, and Custom Color Matching.

Injection molding processing diagram for LFT-G® PP LGF composite series

Processing Parameter	Recommended Value Range
Pre-Drying Temperature / Time	80–100 °C / 2–4 Hours (Moisture < 0.1%)
Melt Temperature Profile	200–250 °C (Varying by fiber loading)
Mold Temperature Zone	40–80 °C
Injection Pressure Range	70–120 MPa

Manufacturing Scale & International Certifications

Xiamen LFT Composite Plastic Co., Ltd. operates continuous melt-impregnation pultrusion lines capable of compounding long glass fiber reinforced polypropylene materials with 20% to 60% fiber loading. Our plant maintains ISO 9001 and IATF 16949 automotive quality management certifications. Every production batch undergoes comprehensive laboratory mechanical testing, ensuring compliance with global RoHS, REACH, and UL directives

Frequently Asked Questions (FAQ)

Q: How to choose between PP-LGF30 and PP-LGF50 grades?

A: PP-LGF30 offers an optimal balance of toughness, low density, and high melt flow for large automotive covers. PP-LGF50 is selected for heavy structural components requiring maximum tensile stiffness (11,500 MPa) and metal substitution.

Q: Can you supply UL94 V-0 flame retardant LGFPP grades?

A: Yes, our compounding laboratory customizes halogen-free flame retardant LFT-G^® PP LGF formulations achieving UL94 V-0 rating at 1.6mm thickness while preserving impact resistance.

Q: How is batch-to-batch composite quality verified?

A: Every production batch undergoes density, tensile, flexural, and Charpy impact testing inside our calibrated LFT-G^® laboratory prior to issuing an official Certificate of Analysis (COA) for shipment clearance.

Request Technical Trial Sample & Custom Quotation

Eradicate weight penalties and warping flaws of generic short-fiber plastics. Contact the global LFT-G^® engineering department today to request a technical trial sample or customized material quotation.

Request Technical Trial Sample

Email Inquiry: Candyhu@lfrtplastic.com

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