Affecting the Ageing Behaviour of Injection-Moulded Microparts Using Variothermal Mould Tempering

Abstract EN

The fast cooling of the melt in an injection moulding process for manufacturing polymer microparts can lead to a modified inner structure, resulting in minor mechanical properties.

Furthermore, the ageing can be also dependent on the process-induced properties.

The results indicate that especially physical ageing processes occur in parts with unpropitious inner properties.

Chemical ageing processes seem to occur independently of the process conditions in microparts.

Tensile tests indicate that a process-induced favoured morphology can reduce the ageing-based change of mechanical properties.