Mechanical behavior of nanoperlite/nanoclay hybrid nanocomposites based on polyethylene: Experimental and numerical validation of hyperelastic models
Message:
Abstract:
This contribution concerns preparation and characterization of low-density polyethylene (LDPE) melt-mixed blends in the presence of organically-modified montmorillonite nanoclays and silane-modified nano perlite. Dispersion state of hybrid nanofillers was observed by scanning electron microscopy (SEM) technique. A significant increase in average roughness of fracture surface of polyethylene with addition of hybrid nanofillers and intensive ridges and valleys are observed in the samples. Crystallization and melting characteristics of LDPE nanocomposites reinforced by hybrid nanoclay/nanoperlite were studied by differential scanning calorimetry (DSC) in isothermal mode. Hybrid nanofiller incorporation increased crystallization and melting temperature which can be related to high interaction between polymeric chains and hybrid nanofillers. The results of mechanical investigation revealed that Young’s modulus and tensile strength of LDPE are improved with introduction of hybrid nanofiller. Six constitutive models, Yeoh, Arruda-Boyce, Mooney-Rivilen, polynomial, Van der Waals, and Odgen were applied to investigate the stress-strain behavior of LDPE/nano clay/nano perlite nanocomposites. It was concluded that the ability of these models to predict the true behavior of the nanocomposite samples directly depends on the amount of hybrid nanofiller. Results showed that Arruda-Boyce, Vander-Waals, Yeoh and Mooney-Rivlin models show more deviation from experimental data in all nanohybrid filler content, whereas the others, Ogden, polynomial (2), can be used for all samples.
Article Type:
Research/Original Article
Language:
Persian
Published:
Journal of Science and Technology Composite, Volume:6 Issue:2, 2019
Pages:
283 - 293
magiran.com/p2019632  
روش‌های دسترسی به متن این مطلب
اشتراک شخصی
در سایت عضو شوید و هزینه اشتراک یک‌ساله سایت به مبلغ 300,000ريال را پرداخت کنید. همزمان با برقراری دوره اشتراک بسته دانلود 100 مطلب نیز برای شما فعال خواهد شد!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی همه کاربران به متن مطالب خریداری نمایند!