1.Β PRODUCT INTRODUCTION

  • Enhanced Performance & Reliability: Expertly blending PET with carbon fiber forΒ increased strength and stiffness.
  • Smart Fiber Reinforced Technology: 15% Carbon fibers form a mesh structure, enhancing mechanical properties and dimensional stability.
  • Superior Dimensional Stability: Reduced warping and shrinkage, maintaining preciseΒ dimensions and shapes.
  • Lightweight Durability: Balancing strength with a lightweight profile, ideal for durableΒ yet lightweight components.
PET-CF black Engineering filament for FDM printer

2.Β APPLICATIONS

  • Automotive industry, drones, Industrial machinery, Architecture and construction:Β hoods, door panels, drones, robot parts, frames of precision instruments, etc.
  • Sports equipment: bicycle frames, golf clubs, tennis rackets, snowboards, etc.
  • Consumer electronics: Electronic product casing, providing a lightweight and strongΒ protective structure.

Find more PET-CF details here

PET-CF engineering filamentPET-CF Filament for FDM printers

3. Property Data

Mechanical Properties

Unannealed

Annealed

Method

Tensile Stress at Break X-Y

74 MPa

73 MPa

ASTM D638

Tensile Stress at Break Z

35 MPa

-

ASTM D638

Young’s Modulus X-Y

5950 MPa

6700 MPa

ASTM D638

Young’s Modulus Z

3400 MPa

-

ASTM D638

Elongation at Break X-Y

2.5 %

1.5 %

ASTM D638

Elongation at Break Z

1.15 %

-

ASTM D638

Charpy impact strength (KJ/m^2)

9

4.8

ISO 179

Bending Strength (MPa)

116

115

ISO 178

Bending Modulus (MPa)

5600

5900

ISO 178

Other Properties

Unannealed

Annealed

Method

Vicat softening temperature ℃

220

-

ISO 306

Glass Transition Temperature

80

-

ASTM D3418

IZOD Impact (Notched 72F) kJ/m

36

-

ASTM D256

HDT @ 1.80 MPa (℃)

76.6

118

Method A

HDT @ 0.45 MPa ℃

86.7

176

Method B

Melting Point (C)

250

/

ASTM D3418

Water Absorption Rate (%)

0.5

0.5

ISO 62

Β 

Specification

Data

Name

PET-CF

Material

Polyethylene terephthalate + 15% carbon fiber

Version

1KG / 2.5KG

Net Weight KG

1/2.5

Color

Black

SKU

ST3003/ST3203

Filament Density g/cmΒ³

1.3

Diameter

1.75Β±0.02 mm

4. Preparing for Printing

Drying: PET materials are sensitive to moisture, which can affect the performanceΒ during printing and the quality of the final product. Ensure the material is dried.

Siraya Tech PET-CF (and all of our filaments) are dried before being sealed in an aluminum bag, which protects them from moisture for up to 3 years. It can be used directly without drying. It's recommended to dry at 90Β°C for 4-6 hours. Only dry if filament shows signs of moisture.

Bed Temperature: Recommended bed temperatures range from 70Β°C to 90Β°C to
help the first layer adhere better.

First Layer Settings: The first layer is critical for a successful print. Ensure the bedΒ is level and the first layer print speed is slightly reduced to enhance adhesion.

5. Print setting for Fibreheart PET-CF

Nozzle TemperatureΒ  280-320Β°C
Recommended Nozzle DiameterΒ  0.4-1.0mm (hardened steel or higher grade)
Recommended Build SurfaceΒ  PEI or coat with PVP glue stick
Build Plate TemperatureΒ  60-80Β°C
Raft Separation DistanceΒ  0.08-0.12mm
Cooling Fan SpeedΒ  Off
Print SpeedΒ  30-120mm/s
Max Extrusion Volumetric SpeedΒ 

20mmΒ³/s at 320Β°C

Retraction DistanceΒ  1-3mm
Retraction SpeedΒ  1800-3600mm/min

Β 

6. Moisture Management

Sealed Packaging: When not in use, store PET material in a sealed aluminum foilΒ bag to prevent moisture ingress.

Use Desiccants: Include desiccants during storage to absorb any potentialΒ moisture, keeping the material dry.

Avoid Direct Sunlight and High Temperatures: Store PET materials in anΒ environment that avoids direct sunlight and high temperatures to prevent materialΒ degradation.

Temperature Control: It's best to store PET materials at room temperature; bothΒ overheating and excessive cooling can affect the printing performance and qualityΒ of the material.

7. Troubleshooting Common Issues

Stringing: If you notice stringing between parts of your print, reduce the printingΒ temperature by 5-10 degrees. Also, adjust the retraction settingsβ€”increaseΒ retraction distance and speed to pull the filament effectively away from the nozzleΒ during travel moves.

Moisture Problems: If the filament has absorbed moisture, which can cause popping sounds and poor surface quality, dry the filament. Use an oven set atΒ 100-120Β°C for 4-6 hours. Store the filament in a sealed bag with desiccants toΒ prevent reabsorption of moisture.

8.Β 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 90-100Β°C forΒ 4-6 hours. Be mindful of potential shrinkage during the annealing process.

DownloadΒ Fibreheart PET-CF TDS in PDF version