Thermomechanical performance and shape recovery behaviour of shape memory polymer nanocomposite incorporated with hexagonal boron nitride

Abstract

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Multifunctional epoxy nanocomposites reinforced by two-dimensional materials: A review

“…The reduction of temperature leads to chain freezing and storage of entropic energy (Figure 13a4); however, with the increase of temperature as a result of heat or electrical current (Figure 13a5), the molecular chains are driven back to their lowest energy configuration (initial shape). Even though the literature on SMP/2D material nanocomposites is dominated by graphene-related materials, also MXenes could be in a similar manner for the creation of electrically and thermally conductive SMP composites, while boron nitride and its hybrids [225][226][227][228][229] could also offer an alternative. Overall, it can be concluded that the introduction of 2D fillers into shape memory epoxy resins at low filler contents can effectively lead to strong self-shaping structures and can avoid catastrophic failure.…”

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“…Meanwhile, this acoustic metamaterials can be combined with intelligent materials to enhance their functionality. For example, it may be prepared from shape memory materials to have active deformation (Yao et al, 2018c;Lu et al, 2015), shape memory (Yao et al, 2018b) and controllable structure (Li et al, 2017;Yao et al, 2018a). Acoustic metamaterials ultimately achieve the adjustability of sound insulation frequency.…”