2D boron nitride nanosheets for polymer composite materials

Abstract

Hexagonal boron nitride nanosheets (BNNSs) are promising two-dimensional materials to boost the mechanical, thermal, electrical, and optical properties of polymer nanocomposites. Yet, BNNS-polymer composites face many challenges to meet the desired properties owing to agglomeration of BNNSs, incompatibility, and weak interactions of BNNSs with the host polymers. This work systematically reviews the fundamental parameters that control the molecular interactions of BNNSs with polymer matrices. The surface modification of BNNSs, as well as size, dispersion, and alignment of these nanosheets have a profound effect on polymer chain dynamics, mass barrier properties, and stress-transfer efficiency of the nanocomposites.

Enhanced Thermal Conductivity of Polymer Composite by Adding Fishbone-like Silicon Carbide

“…Therefore, the heat dissipation problem of chip devices continues to receive more attention [1][2][3][4][5][6][7][8]. Polymers with the advantages of chemical resistance, high-temperature resistance, oxidation resistance, and weathering resistance are widely used as thermal interface materials (TIM) [9][10][11][12][13][14]. However, most polymers exhibit typically poor thermal conductivity, such as the thermal conductivity of polyvinylidene fluoride (PVDF), polydimethylsiloxane (PDMS), polystyrene (PS), etc., ranging from 0.1 to 0.4 W m −1 K −1 [15], which significantly limits their applications as TIMs.…”

CuxCo1-xFe2O4 (x = 0.33, 0.67, 1) Spinel Ferrite Nanoparticles Based Thermoplastic Polyurethane Nanocomposites with Reduced Graphene Oxide for Highly Efficient Electromagnetic Interference Shielding

“…The force was varied from 2405 Newton to 1680 Newton during preparation of nanocomposites. Further, the nanocomposite characteristics, such as electrical, mechanical, thermal, and optical, etc., have dependence on interfacial physical and chemical interactions [ 102 ]. The strong interfacial interactions between nanofillers (spinel ferrite and rGO) and polymer matrix, may provide high nanocomposites properties [ 103 ].…”

Emerging Flexible Thermally Conductive Films: Mechanism, Fabrication, Application

“…When Li-ion battery and supercapacitor are operated at high temperature, the softening of polymer separator is possible to cause electrical short circuit [ 213 ]. Thus, thermally conductive films can also be used as the thermal management materials in energy storage devices to dissipate excess heat [ 13 , 214 ]. The research results demonstrated that BNNS composite membrane separator for Li-Ion battery can withstand an operating temperature up to 150 °C [ 213 , 214 ].…”

“…Thus, thermally conductive films can also be used as the thermal management materials in energy storage devices to dissipate excess heat [ 13 , 214 ]. The research results demonstrated that BNNS composite membrane separator for Li-Ion battery can withstand an operating temperature up to 150 °C [ 213 , 214 ]. For example, Hu et al [ 215 ] developed a thermally conductive separator coated by BNNS to enhance the thermal stability of Li-Ion battery.…”