Cold-drawing (necking) behavior of polycarbonate as a double glass transition

Autor:	Alexander Chudnovsky, Kalyan Sehanobish, C. P. Bosnyak, Zhenwen Zhou
Rok vydání:	1995
Předmět:	Materials science Polymers and Plastics Stress–strain curve General Chemistry Dynamic mechanical analysis Strain rate Natural rubber Rubber elasticity visual_art Materials Chemistry visual_art.visual_art_medium Polycarbonate Composite material Glass transition Necking
Zdroj:	Polymer Engineering and Science. 35:304-309
ISSN:	1548-2634 0032-3888
Popis:	The thermomechanical behavior of poly(bisphenol A carbonate) (PC) undergoing cold-drawing (necking) over a large range of temperature and strain rate has been studied. The cold-drawing of PC has been described from a material particle perspective in terms of true stress and strain relationships. The isothermal draw stress is shown to be a material parameter, and the true stress-strain behavior of necked material above the true drawing stress follows conventional treatment by rubber elasticity. Cold-drawing is described as a double glass transition: first, a transition from an isotropic glass to an isotropic rubber at the yield point, then, on unloading after stretching of a rubbery mesophase, a transition from an oriented rubber to an oriented glass.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1a4309ab109e40a6eb0d8d153ce1af36 https://doi.org/10.1002/pen.760350404 Zobrazit plný text záznamu Plný text