Investigations on environmental stress cracking resistance of LDPE/EVA blends [Elektronische Ressource] / von Bistra Andersen

Investigations on Environmental Stress Cracking Resistance of LDPE/EVA Blends Dissertation zur Erlangung des akademischen Grades Doktor-Ingenieurin (Dr.-Ing.) vorgelegt der Mathematisch-Naturwissenschaftlich-Technischen Fakultät (Ingenieurwissenschaftlicher Bereich) der Martin-Luther-Universität Halle-Wittenberg von Frau Dipl.-Ing. Bistra Andersen geb. am 09.01.1973 in Ruse, Bulgaria Gutachter: 1. Prof. Dr. J. Kreßler 2. Prof. Dr. G. H. Michler 3. Prof. Dr. J. Piglowski verteidigt am 28.06.2004 urn:nbn:de:gbv:3-000006970[http://nbn-resolving.de/urn/resolver.pl?urn=nbn%3Ade%3Agbv%3A3-000006970]Contents List of Publications 4 Acknowledgments 5 Abbreviations and Symbols 6 1. Introduction 9 1.1 Significance of Environmental Stress Cracking for the Long-Term Service of Plastic Products 9 1.2 Research Tasks 10 2. Definition of Environmental Stress Cracking (ESC) 11 2.1 The Occurrence of ESC 11 2.2 The Stress Factor 12 2.3 Cracking Agents 2.4 A Graphic Model for Failure 14 2.5 Factors Influencing the ESC-Behavior 17 3. Test Methods for Evaluation of ESCR of Plastics 18 3.1 Tests at Constant Strain 18 3.1.1 Three-Point Bending Test 18 3.1.2 Bell Telephone Test (BTT) 19 3.2 Tests at Constant Load (Stress) 20 3.2.