Comparative study of mechanical properties of PP, LDPE and EVA at different molding temperatures
Abstract
The focus of the study is to prepare plastic materials at different molding temperatures, measure their mechanical properties and observe the comparison of the properties. Low-density polyethylene (LDPE), Polypropylene (PP) and Ethylene-vinyl acetate (EVA) are used for this purpose. For each material, Dog-bone shaped specimens are prepared. The samples are prepared at different molding temperatures using compression injection molding method. Tensile strength, yield strength, and maximum elongation are measured according to ASTM D68-02a. Finally, the properties of the specimens are compared. It has been observed that the ultimate tensile strength and the yield strength of all the three materials rises, while the maximum elongation of the materials decreases with the increasing molding temperature. In addition, PP shows the highest value and EVA shows the lowest value in ultimate tensile strength and yield strength, while the opposite is true in case of maximum elongation. Interestingly, the mechanical values of LDPE always remain at the medium level compared to the other two materials.
- Publication:
-
International Conference on Mechanical Engineering
- Pub Date:
- July 2018
- DOI:
- 10.1063/1.5044286
- Bibcode:
- 2018AIPC.1980c0007J