Affecting the Ageing Behaviour of Injection-Moulded Microparts Using Variothermal Mould Tempering
Affecting the Ageing Behaviour of Injection-Moulded Microparts Using Variothermal Mould Tempering
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DOI：
10.1155/2013/407964
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发表时间：
2013-01-01
影响因子：
2.1
通讯作者：
Drummer, Dietmar
中科院分区：
文献类型：
--
作者：
Meister, Steve;Drummer, Dietmar
在制造聚合物微部件的注塑过程中，熔体的快速冷却会导致内部结构的改变，从而导致较小的机械性能。此外，老化也可能取决于过程诱导的性质。结果表明，内部性能不佳的零件发生物理老化。化学老化过程似乎独立于微部件的工艺条件而发生。拉伸试验表明，工艺诱导的有利形貌可以减少基于时效的力学性能变化。
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.