ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In this paper, effort has been undertaken to study the fracture behavior ofthermoplastic/elastomer (PP/SBS) dynamically vulcanized blends by analyzing the EWF testresults. PP/SBS blends were prepared with concentrations of SBS of 15, 30 and 40 wt%. Deeplydouble edged notched tension (DDENT) specimens were cut from injection molded plaques forfracture testing. It should be noted that the incorporation of SBS to PP seems to enhance fracturetoughness, thus the specific essential work (we) increases with elastomer content. The elastomerparticles contribute to the energy dissipation at the fracture surface and in the outer plastic zone inwhich various types of deformation might have been at work. Also, it seems that the fracturetoughness value levels-off from 30 wt% rubber on. In addition, the incorporation of SBS triggers aconsiderable plastic deformation, since the non-essential work ( βwp) increases compared to thevalue of pure PP. Nonetheless, a decrease in βwp is present with increasing amount of rubber. Sothe EWF method revealed that the dynamic vulcanization method can impair fracture resistance toPP/SBS blends
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.47-50.278.pdf
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