Assessment for stretchability condition of polymers and Time-Temperature Superposition Principle; first step towards a test for recycled PET?

POLYMER

卷:231

Article

Billon, Noelle¹ 

[1] Univ PSL, Ctr Mise Forme Mat CEMEF, CNRS UMR 7635, Mines ParisTech, Sophia Antipolis, France

关键词: Bi axial stretching;    Stretchability;    Time temperature superposition principle;    Master curve;    Polyethylene Terephthalate;    ISBM;    Recycling;   

DOI  :  10.1016/j.polymer.2021.124145

来源: Elsevier

【 摘 要 】

In this study the stretchability and the suitability for blow molding processes of five grades of PET are assessed within that frame of Time-Temperature Superposition Principle (TTP) where testing conditions is described with one-unique parameter: The equivalent strain-rate at reference temperature. PETs were chosen to exhibit significantly different behaviors representative for part of the variability of behavior that could exist in recycled materials. A route to anticipate stretching conditions of different resins from DMA analysis is then validated that should be extended to account for the expected variabilities in stretchability of recycled materials in an industrial context.

【 授权许可】

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