Details

Autor(en) / Beteiligte

• Salazar, A.
• Rico, A.
• Rodríguez, J.
• Segurado Escudero, J.
• Seltzer, R.
• Martin de la Escalera Cutillas, F.

Titel

Monotonic loading and fatigue response of a bio-based polyamide PA11 and a petrol-based polyamide PA12 manufactured by selective laser sintering

Ist Teil von

• European polymer journal, 2014-10, Vol.59, p.36-45

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •Mechanical and fatigue response of SLS petrol-based PA12 and bio-based PA11 at different ambient conditions.•Independently of the conditions, PA11 showed better mechanical and fatigue behaviour than PA12.•Fatigue response of PA12 does not vary with temperature but PA11 shows an improvement at −50°C.•PA11 showed ductile cavitation and PA12 brittle crazing.•Under water conditioned conditions, PA12 fatigue response was much worse than PA11. Polyamide 11 (PA11) is obtained from vegetable oil and presents similar characteristics to the petroleum-based polyamide 12 (PA12). Thanks to its particular thermal properties, PA11 is suitable (as PA12 is) to be manufactured by selective laser sintering (SLS), an additive manufacturing technique. In this work, the mechanical performance of PA12 and PA11 processed by SLS was compared under various ambient conditions. It is shown that PA11 has higher toughness and ductility, especially at low temperature, at expense of a mild decrease in modulus. PA11 also presented the highest hydrothermal aging resistance. The fatigue resistance was also superior in PA11 under the studied conditions.