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Accelerated the environmental stress cracking (ESC) study of polymer materials using a plastic ruler and a PVC eraser  

Park, Joon Hyung (Korea Testing & Research Institute HQ of Reliability)
Ahn, Won Bae (Sejong Science High School)
Yoo, Jin Seong (Sejong Science High School)
Kim, Kyoung Mun (Korea Testing & Research Institute HQ of Reliability)
Nam, Kyoung Hyun (Kyonggi University Department of Applied Information Statistics)
Publication Information
Journal of Applied Reliability / v.13, no.2, 2013 , pp. 141-151 More about this Journal
Abstract
The study of environmental stress cracking (ESC) by contact with plastic rulers and PVC erasers which was artificially added to the external stress was carried out in order to accelerate the chemicals crack. To analyze a blooming plasticizer that migrates from the inside of blended eraser to the surface of the eraser, the ESC experiments were carried out at room temperature and $50^{\circ}C$ conditions. The chemicals crack shape caused by the plasticizer and the brittle fracture shape resulted from the external stress were observed in consequence with the cross-sectional surface analysis of the ruler crack by the ESC. The bending strength of the plastic rulers were fractured prior to the yield point and it had low bending flexure stress. We presented that ESC of polymer materials was affected by the polarity of the chemicals and polymer, the exposure time to chemicals, the exposure temperature and the level of strain on the polymer.
Keywords
Environmental stress cracking (ESC); Environmental stress-cracking resistance (ESCR); plastic ruler; PVC eraser; crack; craze;
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