Study on the mechanical characteristics of injection molded glass fiber-reinforced polyamide 66 composites for the application of automotive lightweighting
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Polyamide 66 is widely known to be a good candidate plastic material for the application of automotive lightweighting. In this study, injection molded glass fiber-reinforced polyamide 66 composites were prepared and their mechanical characteristics depending on the variation of glass fiber content were analyzed. It was carried out a detailed analysis regarding mechanical properties such as tensile strength, flexural strength, impact strength, and mechanical loss tangent. It could be successfully sought for a commercial grade of glass fiber-reinforced polyamide 66 composites, which shows over 88% of the specification of specific automobile part based on tensile strength and flexural strength. The Izod impact strength test was carried out at both room temperature and low temperature of -40 oC, and also it was tried dynamic mechanical analysis in order to estimate loss tangent value depending on the glass fiber content.