Reakce HDPE v tavenině iniciované peroxidy

Autor:	Hampapa, Břetislav
Jazyk:	čeština
Rok vydání:	2011
Předmět:	rheological properties polyethylene mechanical properties crosslinking mechanické vlastnosti. krystalinita reologické vlastnosti polyethylen crystallinity síťování
Druh dokumentu:	masterThesis
Popis:	The thesis deals with HDPE modification by crosslinking. In the theoretical part, data available in the literature were reviewed. Modifications of the selected HDPE copolymer grade were carried out in a kneading device Brabender using 25 ml chamber size. After having optimized process conditions, there were performed a series of experiments in dependence on concentration of the initiator. Reological properties of polymer samples were investigated by melt flow indexes measured under different conditions. Changes in crystallinity and melting temperatures were evaluated from DSC heat flow measurements. The samples meeting characteristics supposed were selected for measuring complex viscosity on the Rheometer AR-G2 TA and for testing some mechanical properties on the device Zwick.
Databáze:	Networked Digital Library of Theses & Dissertations
Externí odkaz:	http://www.nusl.cz/ntk/nusl-216682 Zobrazit plný text záznamu