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Properties Enhancement of Styrene-butadiene-rubber (SBR) by Incorporating Hybrid Nanoparticles based on Metal-Organic Framework (MOF)/Carbon Nanoparticle

Babaie, Ali | 2021

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 54051 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Shojaei, Akbar; Molavi, Hossein
  7. Abstract:
  8. Flexible polymers (elastomers) are especially suitable for dynamic applications, and carbon based fillers are well-known filler for elastomers. These types of fillers are widely used in elastomer matrices for various commercial applications. Some of carbon nano fillers like Nanodiamond cannot (ND) impart such high degree of reinforcement to polymer matrices mainly because of improper filler dispersion and lack of strong filler-polymer interaction.In this effort, we examine the effects of nanodiamond/UiO-66 hybrid nanostructured materials when they are incorporated in styrene-butadiene rubber (SBR) in terms of mechanical, thermal and electrical properties of the nanocomposites.Different ingredients and ND/UiO-66 hybrid nanofillers at various concentrations up to 5 phr were added to SBR by mechanical mixing in an internal mixer. The isothermal cure of compounds was studied at 150 ˚C using a moving die rheometer (MDR). Mechanical properties were evaluated by stress-strain measurements at room temperature. Bound rubber percentage was also estimated through chemical method by immersing uncured samples in toluene. Thermal diffusivity across the samples were determined by laser flash method. Uniform distribution of fillers in the composites was studied by Field Emission Scanning Electron Microscopy (FE-SEM).After performing various tests, the greatest effect of hybridization of two nanoparticles was observed on the thermal conductivity properties of the composite. The synergistic effect of these two nanoparticles increases the thermal conductivity of neat SBR from 0.59 W / m.K to 2.22 W/ m.K for ND/UiO-66 filled SBR at phr5 loading
  9. Keywords:
  10. Nanocomposite ; Thermal Properties ; Nanodiamond ; Mechanical Properties ; UiO-66 Hybrid Nanoparticles ; Hybrid Nanoparticles ; Styrene-Butadiene Rubber (SBR) ; Metal-Organic Framework

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