Exfoliation of hexagonal boron nitride assisted with hierarchical ionic fragments by ball‐milling for achieving high thermally conductive polymer nanocomposite

The thermally conductive properties of silicone thermal grease enhanced by hexagonal boron nitride (hBN) nanosheets as a filler are relevant to the field of lightweight polymer-based thermal interface materials. However, the enhancements are restricted by the amount of hBN nanosheets added, owing to a dramatic increase in the viscosity of silicone thermal grease. To this end, a rational structural design of the filler is needed to ensure the viable development of the composite material. Using reduced graphene oxide (RGO) as substrate, three-dimensional (3D) heterostructured reduced graphene oxide-hexagonal boron nitride (RGO-hBN)-stacking material was constructed by self-assembly of hBN nanosheets on the surface of RGO with the assistance of binder for silicone thermal grease. Compared with hBN nanosheets, 3D RGO-hBN more effectively improves the thermally conductive properties of silicone thermal grease, which is attributed to the introduction of graphene and its phonon-matching structural characteristics. RGO-hBN/silicone thermal grease with lower viscosity exhibits higher thermal conductivity, lower thermal resistance and better thermal management capability than those of hBN/silicone thermal grease at the same filler content. It is feasible to develop polymer-based thermal interface materials with good thermal transport performance for heat removal of modern electronics utilising graphene-supported hBN as the filler at low loading levels.

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Influence of BaTiO3/white graphene filler synergy on the energy harvesting performance of a piezoelectric polymer nanocomposite

Sustainable Energy & Fuels ◽

10.1039/c8se00519b ◽

2019 ◽

Vol 3 (3) ◽

pp. 774-785 ◽

Cited By ~ 20

Author(s):

Deepalekshmi Ponnamma ◽

Mariam Al Ali Al-Maadeed

Keyword(s):

Energy Harvesting ◽

Boron Nitride ◽

Polyvinylidene Fluoride ◽

Hexagonal Boron Nitride ◽

Polymer Nanocomposite ◽

Piezoelectric Polymer ◽

White Graphene

Designing a piezoelectric nanogenerator based on ternary polyvinylidene fluoride hexafluoropropylene (PVDF-HFP) nanocomposite containing ceramic BaTiO3 and hexagonal boron nitride nanomaterials.

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One-step environmentally friendly exfoliation and functionalization of hexagonal boron nitride by β-cyclodextrin-assisted ball milling

Ceramics International ◽

10.1016/j.ceramint.2020.05.181 ◽

2020 ◽

Vol 46 (13) ◽

pp. 21084-21089 ◽

Cited By ~ 1

Author(s):

Dong Ji ◽

Zhen Wang ◽

Yanjiao Zhu ◽

Haibin Yu

Keyword(s):

Boron Nitride ◽

Ball Milling ◽

Hexagonal Boron Nitride ◽

Environmentally Friendly ◽

One Step

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Surface modification of a BN/ETDS composite with aniline trimer for high thermal conductivity and excellent mechanical properties

RSC Advances ◽

10.1039/c8ra03875a ◽

2018 ◽

Vol 8 (40) ◽

pp. 22846-22852 ◽

Cited By ~ 7

Author(s):

Seokgyu Ryu ◽

Taeseob Oh ◽

Jooheon Kim

Keyword(s):

Mechanical Properties ◽

Thermal Conductivity ◽

Surface Modification ◽

Boron Nitride ◽

Polymer Composites ◽

Conductive Polymer ◽

High Thermal Conductivity ◽

Conductive Polymer Composites ◽

Thermally Conductive

Boron nitride (BN) particles surface-treated with different amounts of aniline trimer (AT) were used to prepare thermally conductive polymer composites with epoxy-terminated dimethylsiloxane (ETDS).

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Preparation of Boron Nitride Nanoplatelets via Amino Acid Assisted Ball Milling: Towards Thermal Conductivity Application

Nanomaterials ◽

10.3390/nano10091652 ◽

2020 ◽

Vol 10 (9) ◽

pp. 1652

Author(s):

Nan Yang ◽

Haifeng Ji ◽

Xiaoxia Jiang ◽

Xiongwei Qu ◽

Xiaojie Zhang ◽

...

Keyword(s):

Thermal Conductivity ◽

Amino Acid ◽

Boron Nitride ◽

Ball Milling ◽

Hexagonal Boron Nitride ◽

Base Material ◽

Single Layer ◽

Self Healing ◽

Dispersion State ◽

Pva Hydrogel

Hexagonal boron nitride nanoplatelets (BNNPs) have attracted widespread attention due to their unique physical properties and their peeling from the base material. Mechanical exfoliation is a simple, scalable approach to produce single-layer or few-layer BNNPs. In this work, two amino acid grafted boron nitride nanoplatelets, Lys@BNNP and Glu@BNNP, were successfully prepared via ball milling of h-BN with L-Lysine and L-Glutamic acid, respectively. It was found that the dispersion state of Lys@BNNP and Glu@BNNP in water had been effectively stabilized due to the introduction of amino acid moieties which contained a hydrophilic carboxyl group. PVA hydrogel composites with Lys@BNNP and Glu@BNNP as functional fillers were constructed and extensively studied. With 11.3 wt% Lys@BNNP incorporated, the thermal conductivity of Lys@BNNP/PVA hydrogel composite was up to 0.91 W m−1K−1, increased by 78%, comparing to the neat PVA hydrogel. Meanwhile, the mechanical and self-healing properties of the composites were simultaneously largely enhanced.

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