Influence of deformation on the physical ageing of polycarbonate

Autor:	R. Pixa, C. Goett, D. Froelich
Rok vydání:	1985
Předmět:	Quenching Materials science Polymers and Plastics General Chemistry Dynamic mechanical analysis Condensed Matter Physics Mechanical torsion Creep Ageing visual_art Dynamic modulus Materials Chemistry visual_art.visual_art_medium Composite material Polycarbonate Deformation (engineering)
Zdroj:	Polymer Bulletin. 14
ISSN:	1436-2449 0170-0839
DOI:	10.1007/bf00254915
Popis:	Physical aging behavior of polycarbonate samples has been studied by dynamic mechanical torsion tests near ambient temperature in the range of 0.01 to 100 rad/s. Aging effects have been measured either after heating above Tg and quenching, or after cold drawing at ambient temperature, or after a combination of both. On the quenched samples our results are consistent with findings of S{uptruik} (1) obtained by creep tests, i.e. an aging rate, μ,, of about 1. On the other hand, on the cold drawn samples μ was found to be about 2.3 when determined from storage modulus data, and about 1.5 from loss modulus, indicating an acceleration effect on the molecular mobility in PC.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ab5d9afd6bb6d3f2999dd6338cb04b5f https://doi.org/10.1007/bf00254915 Zobrazit plný text záznamu Full text from SpringerLink