Effect of nanoparticles dispersion on viscoelastic properties of epoxy_zirconia polymer nanocomposites

[摘要] In the present work zirconia-nanoparticles were dispersed in epoxy matrix to form epoxy-zirconia polymer nanocomposites using ultrasonication and viscoelastic properties of nanocomposites were investigated. For the same spherical zirconia-nanoparticles (45 nm) were dispersed in weight fraction of 2, 4, 6 and 8 % to reinforce the epoxy. DMA results show the significant enhancement in viscoelastic properties with the dispersion of zirconia nanoparticles in the epoxy matrix. The value of storage modulus and glass transition temperature increases from 179 MPa (pristine) to 225 MPa (6 wt.% ZrO2) and 61 °C (pristine) to 70 °C (6 wt.% ZrO2) respectively with the dispersion of zirconia nanoparticles in the epoxy.

[发布机构] Department of Applied Mechanics, Motilal Nehru National Institute of Technology, Allahabad, India^1

[效力级别] 机械制造

[关键词] Epoxy matrices;Polymer nanocomposite;Ultra-sonication;Value of storages;Viscoelastic properties;Weight fractions;Zirconia nanoparticles