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This research aims to understand how layer temperature affects the mechanical properties of carbon fibre reinforced polyamide 6 (PA6-CF).

July 4, 2026Proceedings of the Design Society2 citationsOpen Access

Characterising thermal effects on ultimate tensile strength, strain, and tensile modulus by material extrusion of carbon fibre reinforced polyamide 6

EØEmil Blom ØrnesNorwegian University of Science and Technology CEChrister W. ElverumNorwegian University of Science and Technology SSSean H. SassonNorwegian University of Science and Technology

Key Points

This research aims to understand how layer temperature affects the mechanical properties of carbon fibre reinforced polyamide 6 (PA6-CF).
Investigated ultimate tensile strength (UTS) and tensile modulus across temperatures from 67 °C to 165 °C.
Measured in-process layer temperatures between 88 °C and 123 °C.
Conducted material extrusion process of PA6-CF to evaluate mechanical performance.
UTS increased from 7.55 MPa at 67 °C to 36.04 MPa at 165 °C.
Tensile modulus increased from 1.6 GPa at 67 °C to 4.0 GPa at 140 °C.
Findings indicate a performance enhancement window relevant for functional component design.

Abstract

ABSTRACT: We experimentally characterise the effect of layer temperature on the mechanical properties of PA6-CF manufactured by MEX. Ultimate tensile strength (UTS) and tensile modulus was investigated across layer temperatures ranging from 67 °C to 165 °C. UTS increased from 7.55 MPa at 67 °C to 36.04 MPa at 165°, while tensile modulus increased from 1.6 GPa at 67°C to 4.0 GPa at 140 °C. Measurements on a manufactured component show in-process layer temperatures between 88 °C and 123 °C. These findings quantify the attainable performance window and implications for functional component design.

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