نتایج جستجو برای: dmta analysis
تعداد نتایج: 2824300 فیلتر نتایج به سال:
Different compositions of wheat thermoplastic starch (TPS) and polycaprolactone (PCL) are melt blended by extrusion and injected. Different properties are determined: mechanical properties (tensile and impact tests), thermal and thermomechanical properties (DSC and DMTA) and hydrophobicity (contact angle measurement). A large range of blends is analysed with different glycerol (plasticizer):sta...
مواد حافظه شکلی، موادی هستند که قابلیت تغییرشکل از شکل موقت به اصلی را تحت محرکهای مناسب دارند. هدف از این کار، تهیه مواد حافظه شکلی برپایه مواد پلیمری با استفاده از روش آسان، مقرون بهصرفه و بدون نیاز به روشهای سنتزی پیچیده است. بنابراین، مواد حافظه شکلی با آمیختهسازی دو زیستپلیمر PVAc و PLA با روش اختلاط محلول تهیه شد و ریزساختار آنها بهکمک آزمونهای XRD و AFM بررسی شد. همچنین، خواص مک...
Thermal conductivity is a key property in many applications from electronic to informatics. The interaction of fillers with Sylgard 184 was studied; this study explores new composites and the influence metal particles (copper nickel), carbon-based materials (carbon nanotubes carbon black), ceramic nanoparticles (boron nitride) as enhance thermal properties silicon-based composites. effect on fi...
In this study, the physical, morphological, mechanical and thermal properties of furfuryl alcohol/2-ethylhexyl methacrylate/halloysite nanoclay wood polymer nanocomposites (FA-co-EHMA-HNC WPNCs) were investigated. FA-co-EHMA-HNC WPNCs were prepared via an impregnation method and the properties of the nanocomposites were characterized through the weight percent gain, Fourier transform infrared (...
Dimethacrylates are known to have good photoreactivity, but their radical polymerization usually leads to irregular, highly cross-linked, and brittle polymer networks with broad thermal polymer phase transitions. Here, the synthesis of monoand difunctional β-allyl sulfones is described, and those substances are introduced as potent addition−fragmentation chain transfer (AFCT) reagents leading t...
This paper aims to investigate the ability of an eco-friendly and cheap treatment based on sodium acetate solutions improve mechanical properties flax fiber-reinforced composites. Flax fibers were treated for 5 days (i.e., 120 h) at 25 °C with mildly alkaline 5%, 10% 20% weight content salt. Quasi-static tensile flexural tests, Charpy impact tests dynamical thermal (DMTA) carried out evaluate r...
Abstract Structure–properties relationship in complex rubber nanocomposites is a key for enlarging the performance window. Herein, halloysite nanotubes (HNTs) are added at variable content to ethylene-propylene diene monomer (EPDM)/nitrile butadiene (NBR) blends compatibilized with maleic anhydride grafted HNTs evaluate cure characteristics, along microstructure, and mechanical swelling behavio...
Sheet molding compounds (SMC) are very promising for the production of lightweight structural components, due to specific mechanical properties combined with suitability a large-scale manufacturing process. Automotive industry already implements SMC materials components in their vehicle concepts. Polymeric materials, hence also fiber reinforced polymers, show viscoelastic behavior and dynamic-m...
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