Determination of the tear properties of thermoplastic polyester elastomers (TPEEs) using essential work of fracture (EWF) test method

Autor:	Byoung Ho Choi, Jong Sin Moon, Eon Seok Lee, Jeong Moo Lee
Rok vydání:	2009
Předmět:	chemistry.chemical_classification Tear resistance Materials science Thermoplastic Polymers and Plastics Organic Chemistry Fracture mechanics Elastomer eye diseases chemistry Tearing Fracture (geology) Thermoplastic elastomer Composite material Necking
Zdroj:	Polymer Testing. 28:854-865
ISSN:	0142-9418
DOI:	10.1016/j.polymertesting.2009.07.008
Popis:	In this paper, three commercial thin thermoplastic polyester elastomer (TPEE) samples are prepared by the injection molding process. Essential work of fracture (EWF) tests, which have been extended to cover the ductile tearing of polymeric materials that neck before fracture, in both the machine direction (MD) and the transverse direction (TD) are executed based on the ESIS TC-4 protocol as well as conventional trouser tear tests. Through an examination of the EWF test results, the tear properties of TPEE samples can be determined quantitatively. Partitioning of the test results is attempted for identifying the contribution of yielding and necking/tearing on the overall tear properties of TPEE samples. In addition, the fracture surfaces of TPEE samples following EWF tests are investigated through scanning electron microscopy (SEM). The root causes of the differences in tear properties are studied using the morphology of the fracture surfaces of TPEE samples.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f0c6a21483467ee89bbad9359b424568 https://doi.org/10.1016/j.polymertesting.2009.07.008 Zobrazit plný text záznamu Full Text from ScienceDirect