Siraya Tech Fibreheart PET-CF User Manual

1.Introduction to Fibreheart PET-CF Filament

Siraya Tech Fibreheat PET-CF Black is a 10% chopped carbon fiber reinforced polyethylene terephthalate (PET) filament specially developed for FDM 3D printing. It features low moisture absorption, high strength, creep resistance, excellent chemical resistance and high heat resistance.

2.Key Advantages

- Uses Siraya Tech's proprietary fiber reinforcement technology to control fiber dispersion, forming a mesh structure that improves mechanical properties, heat resistance, and part dimensional stability with no warping

- PET's regular molecular structure and rigid benzene rings provide low creep and better mechanical properties compared to PA and PC

- Good dimensional stability during printing with no warping, shrinkage or odor

- HDT is 78.4C for method A and 90.2C for method B

3.Recommended Printing Conditions

Nozzle Temperature: 280-320°C

Recommended Nozzle Diameter: 0.4-1.0mm (hardened steel or higher grade)

Recommended Build Surface: PEI or coat with PVP glue stick

Build Plate Temperature: 60-80°C

Raft Separation Distance: 0.08-0.12mm

Cooling Fan Speed: OFF

Print Speed: 30-120mm/s

Max Extrusion Volumetric Speed: 20mm³/s at 320°C

Retraction Distance: 1-3mm

Retraction Speed: 1800-3600mm/min

 

5.Storage and Handling

Although PET has very low moisture absorption, it is still sensitive to humidity. Store unused Siraya Tech Fibreheat filament in sealed packaging with desiccant. If material absorbs moisture, print quality will degrade (oozing, bubbles, rough surface). Dry filament at 90°C for 4-6 hours. Only dry if filament shows signs of moisture.

6. Annealing

Siraya Tech PET-CF is a robust engineering filament that can be used right off the spool without annealing.

However, if you need to enhance its hardness, consider annealing it at 90-100°C for 4-6 hours. Be mindful of potential shrinkage during the annealing process.

 

Let us know if you have any other questions! The Siraya Tech team is always happy to help you get the best performance out of Fibreheat PET-CF Black filament.