Is It Possible To Fabricate a Nanocomposite with Excellent Mechanical Property Using Unmodified Inorganic Nanoparticles Directly
2018
Unmodified ZrO2 nanoparticles (ZDNPs) are used for the enhancement of polyurethane (PU) films. Optimized strain and toughness of PU/ZDNP nanocomposite at 9.09 wt % ZDNPs are up to 2714.6%, and 280.8 MJ m–3, respectively. The unique bimodal ZDNP aggregate size distribution which exploits both interfacial positively and negatively toughening mechanisms accounts mainly for the excellent mechanical property of PU/ZDNP nanocomposite. The dependence of different toughening mechanisms on three sizes of ZDNP aggregates is summarized. These findings provide a new avenue for the industrial production of nanocomposites at low cost without surface modification of inorganic nanoparticles.
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