High-Purity FEP Particle Optimized For Extrusion Processing (Model: HD925)

High-Purity FEP Particle for Extrusion: Excellent Melt Flow, Chemical Resistance & Insulation. Ideal for Wire Insulation, FEP Tubes/Films-Optimized for Continuous Extrusion Efficiency.

High-Purity FEP Particle Optimized for Extrusion Processing (Model HD925) refers to translucent fluoropolymer pellets (also called F46), synthesized by copolymerizing tetrafluoroethylene with 15% hexafluoropropylene. As a modified derivative of PTFE (the "King of Plastics"), this FEP particle retains PTFE's core properties (chemical stability, insulation) while adding melt-processability-making it tailored for continuous extrusion manufacturing of wire insulation, tubes, and films. Its controlled melt flow rate (6~8 g/10min) ensures smooth, consistent processing, positioning it as a high-quality material for precision extrusion applications.

What is High-Purity FEP Particle for Extrusion Processing?
High-Purity FEP Particle (HD925) is a specialized fluoropolymer pellet engineered for seamless extrusion processing. Unlike PTFE (which requires specialized molding due to its non-melt processability), FEP (Fluorinated Ethylene Propylene, or F46) is a copolymer that balances PTFE's inertness with thermoplastic flow: its molecular structure (a blend of tetrafluoroethylene's stability and hexafluoropropylene's flexibility) allows it to melt uniformly at ~270°C, enabling continuous extrusion into thin layers or complex shapes.

The HD925 grade is optimized for extrusion specifically: its melt flow rate (6~8 g/10min) is calibrated to avoid both excessive flow (which causes uneven thickness) and insufficient flow (which clogs extruders). Compared to other fluoropolymers like FEP with higher melt flow (which sacrifices mechanical strength), HD925 maintains a tensile strength of >24 MPa-critical for end-products like wire insulation that require durability.

Each property of HD925 is designed to solve extrusion challenges and enhance end-product performance:
● Optimized Melt Processability: With a melt flow rate of 6~8 g/10min, it melts uniformly in extruders, enabling continuous, high-speed production of wire insulation, FEP tubes, and films. This is possible because the 15% hexafluoropropylene content breaks up PTFE's rigid molecular chains, creating a flowable yet stable melt-unlike PTFE, which decomposes before melting.
● Superior Chemical Inertness: The C-F bonds in its molecular structure make it inert to most industrial chemicals, acids, and solvents. Unlike PVDF (which degrades in strong bases), HD925 remains stable in corrosive environments-ensuring extrusion-formed components (e.g., chemical-resistant tubes) have long service lives.
● Excellent Electrical Insulation: It has a dielectric constant ≤2.15 (10⁶Hz) and dissipation factor ≤7.0×10⁻⁴, making it ideal for wire insulation in high-frequency applications. This is due to the non-polar nature of its fluorinated chains, which minimize electrical interference-outperforming many non-fluoropolymer insulation materials.
● Flame Retardancy & Thermal Stability: It is inherently non-ignitable (self-extinguishing) and retains properties from -200°C to 200°C. The C-F bonds' high energy (485 kJ/mol) resists thermal degradation, so extrusion-formed films or wires maintain integrity in high-heat environments (e.g., industrial machinery wiring).
● Mechanical Durability: With a tensile strength >24 MPa and elongation at break >300%, it resists tearing during extrusion and use. This is enabled by its copolymer structure, which adds flexibility to PTFE's rigidity-critical for thin wire insulation that must withstand bending.
● High Purity & Translucency: Its translucent appearance and volatile content ≤0.1% ensure no contamination in extrusion-formed medical tubes or food-contact films. This purity is achieved via a post-polymerization purification process, meeting standards for bio-compatible applications.

Feature (F)
● Extrusion-optimized FEP particle (HD925), translucent appearance (F46)
● Melt flow rate: 6~8 g/10min (calibrated for extrusion)
● Tensile strength >24 MPa, elongation >300%
● Melting point ~270°C, dielectric constant ≤2.15 (10⁶Hz)
● Chemical inert, flame-retardant, volatile content ≤0.1%

Advantage (A)
● More processable than PTFE; stronger than high-melt-flow FEP grades
● Consistent melt flow reduces extrusion defects (uneven thickness, clogs)
● Balances chemical/electrical performance with extrusion efficiency
● Meets high-purity standards for medical/food-contact applications

Benefit (B)
● For extrusion manufacturers: High-speed, continuous processing cuts production time; consistent quality reduces rework costs.
● For wire/tube producers: Chemical/insulation properties ensure end-products meet industrial standards; durability reduces field failures.
● For medical/food industries: High purity and bio-compatibility enable compliance with safety regulations.

Evidence (E)
● HD925 meets ASTM D3159 (melt flow) and ASTM D638 (tensile strength) standards; test report No. FEP-EX-2024 confirms 99.9% extrusion yield rate for 0.1mm wire insulation.
● A wire manufacturer using HD925 increased extrusion speed by 20% (from 50m/min to 60m/min) without defects, reducing production costs by 15%.
● In a 1,000-hour chemical immersion test, extrusion-formed HD925 tubes retained 98% of their tensile strength (vs. 85% for standard FEP).

● Wire Insulation: Extruded into thin layers (0.05~0.5mm) for industrial, aerospace, or medical wires-leveraging its insulation and chemical resistance.
● FEP Tubes: Extruded into flexible, corrosion-resistant tubes for chemical processing, medical fluid transfer, or laboratory equipment.
● FEP Films: Extruded into thin, translucent films for food packaging (non-stick, heat-resistant) or electronic component protection.

Need a high-quality FEP particle for seamless extrusion processing? Request a free sample of HD925 today to test its melt flow and performance in your extrusion line. Our technical team can provide custom processing guides, and we offer flexible batch sizes (25KG drums) with global delivery. Send an inquiry now to discuss your extrusion needs!

25kg/woven bag, 800kg/pallet

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