Siraya Tech Fibreheart PAHT-CF Core Filament User Manual

1. Product Overview

Siraya Tech Fibreheart PAHT-CF Core is an advanced FDM 3D printing filament engineered for exceptional performance.

This innovative material features a unique skin-core structure, combining polyphthalamide (PPA) - a high-temperature nylon (PAHT) outer layer with a 25% chopped carbon fiber reinforced core. This architecture delivers superior mechanical properties, heat resistance, and layer adhesion compared to traditional fiber-filled filaments.

2. Key Features

Revolutionary Core-Shell Structure
    • Optimized Fiber Distribution: 25% carbon fiber concentrated in the filament core
    • Enhanced Layer Adhesion: PPA outer shell ensures superior Z-axis bonding
    • Reduced Nozzle Wear: Protective outer layer minimizes abrasive fiber contact with printer components
Performance Benefits
    • Superior Mechanical Properties: Higher fiber content (25%) enables exceptional strength and stiffness
    • Enhanced Layer Bonding: Pure resin shell-to-shell contact provides superior Z-axis strength
    • Excellent Dimensional Stability: Core-shell structure minimizes warping and improves part accuracy
    • Extended Equipment Life: Reduced wear on nozzles, extruders, and other printer components
    • Easy on the Hand: Less fiber on the outer shell means less chance for short fiber irritating skin

3. Material Properties

Property

Value (annealed)

Tensile Strength (X-Y)

121 MPa

Young's Modulus (X-Y)

10220 MPa

Elongation at Break (X-Y)

1.6%

Bending Strength (X-Y)

185 MPa

Bending Modulus (X-Y)

9510 MPa

Impact Strength (X-Y)

7.3 KJ/m²

 

4. Storage and Handling

Moisture Control
    • Store in a dry box with relative humidity below 15%;
    • Promptly reseal packaging after use.
If moisture contamination occurs (indicated by oozing, bubbles, or rough surface finish):
    • Dry in oven at 80-100°C for 4-6 hours;
    • Only perform drying when moisture symptoms are present.

5. Print Settings and Requirements

Hardware Requirements

    • Nozzle: Hardened steel or higher grade;
    • Nozzle Diameter: 0.4-1.0mm;
    • Bed Surface: PEI with Glue Stick or PVP glue coating

Recommended Print Parameters

Parameter

Setting

Nozzle Temperature

300-320°C

Bed Temperature

80°C

Cooling Fans

OFF

Print Speed

30-120 mm/s

Layer Height

0.2mm (recommended)

Retraction Distance

1-3mm

Retraction Speed

1800-3600 mm/min

Raft Separation

0.08-0.12mm

Support Material

Compatible with quick-release support materials

 

6. Post-Processing

Annealing Guidelines (Optional)

  • Temperature: 80-100°C
  • Duration: 4-8 hours
  • Cooling: Allow natural cooling to room temperature

Benefits:

  • Improved heat deflection temperature
  • Enhanced mechanical properties
  • Better dimensional stability

7. Applications

  • High-performance mechanical components
  • Thin-wall parts requiring exceptional strength
  • Heat-resistant applications
  • Precision engineering components
  • Industrial tooling and fixtures
  • Parts requiring superior layer adhesion