Abstract:

In this study, Environmental Stress Cracking (ESC) behavior of samples produced from two different Polycarbonate and one Polycarbonate/Acrylonitrile Butadiene Styrene mixture resins were analyzed. Experimental samples were produced from Lexan EXL9330, Lexan EXL5689 and CYCOLOY Cx 7240-701 resins by plastic injection molding method. Mechanical tests such as tensile test and environmental stress cracking test were applied to examine the ESC behavior of the produced samples. Fourier Transform Infrared Spectroscopy (FTIR) and Surface Tension / Contact Angle measurement were used as analysis and measurement methods. In ESC tests, distilled water, Polyethylene Glycol 400 (PEG400) and pure glycerin were used as liquids. As a result, it was observed that the samples were damaged very quickly in the PEG400 medium. The damage mechanism was evaluated as ESC, and FTIR results showed that there was no chemical degragation effect in damage formation. It has been evaluated that the resulting damage shows brittle fracture behavior, the ductility of the material and the hydrophilicity of the surface are factors in the damage.

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