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Journal of Plastics Technology 2017/04

Effects of high cooling rates on solidification for nucleated and non-nucleated semi-crystalline thermoplastics

Effects of high cooling rates on solidification for nucleated and non-nucleated semi-crystalline thermoplastics

During polymer processing the polymer melt usually undergoes a rapid cooling. This affects the solidification of the material, especially the crystallization behaviour. This paper investigates the solidification of semi-crystalline thermoplastic polymers at varied cooling conditions with respect to the presence of nucleating agents to analytically evaluate the application potential for micro injection moulding. For this a high speed DSC is used with cooling rates up to 2000 K s-1 . The investigations reveal that increased cooling rates shift the crystallization temperatures to lower temperatures. Especially for slow crystallizing PA 66 sufficient high cooling rates suppress the crystallization of the melt. A nucleation of the material favours the crystallization as it takes place at already higher temperatures as well as at high cooling rates which are evident for micro injection moulding processes.

Dr.-Ing. Steve Meister1 ; Christopher Fischer, M.Sc.1 ; Prof. Dr.-Ing. Dietmar Drummer1
1 Institute of Polymer Technology, University Erlangen-Nuernberg, Germany

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The Journal of Plastics Technology is a peer reviewed internet periodical published under the auspices of the Scientific Alliance of Polymer Technology (WAK)


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International Polymer Processing

International Polymer Processing, the journal of the Polymer Processing Society, is a discussion forum for the world-wide community of engineers and scientists in the field of polymer processing.

The journal covers research and industrial application in the very specific areas of designing polymer products, processes, processing machinery and equipment.


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The Journal of Plastics Technology is indexed in SCOPUS, the largest abstract and citation database of peer-reviewed literature.