Synergetic integration of thermal conductivity and flame resistance in nacre‐like nanocellulose composites

Hu, Dechao; Liu, Huaqing; Ding, Yong; Ma, Wenshi

doi:10.1016/j.carbpol.2021.118058

Cited by 31 publications

(18 citation statements)

References 56 publications

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“…Compared with CNF, the PHRR and THR of CBP10 decreased by 80.3 and 64.7%, respectively. We have comprehensively compared the thermal conductivity enhancement and PHRR reduction of CBP10 with the work of other researchers. ,− It can be seen that the composite film we prepared has higher heat conduction and lower heat release (Figure c). To show the flame resistance of the film more intuitively, the burning behavior of the film on the alcohol lamp was recorded (Figure d–f).…”

Section: Results and Discussionmentioning

confidence: 94%

Optimization of Flexible Nacre-Like Cellulose Nanofiber Films by a Covalent Overlapping Method: Excellent Thermal Conductivity and Superior Flame Resistance

Guo

Peng

Wang

et al. 2023

Ind. Eng. Chem. Res.

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Facing the explosive growth of heat flux in microelectronic equipment, advanced thermal management materials should not only ensure the safe and stable operation of equipment, but also have the ability to withstand fire risks. Carbon materials such as graphene are subject to many restrictions in use due to their inherent high conductivity. Hexagonal boron nitride (h-BN) is often used to blend with polymers to prepare flexible thermal management materials due to its excellent electrical insulation and thermal conductivity. However, its further application is limited by its insufficient flame resistance and limited improvement of thermal conductivity at low filling levels. In this paper, urea-assisted ball milling is used to achieve the amination of boron nitride nanosheets (BNNS) and black phosphorus (BP), which creates the covalent bond between the filler and the cellulose. With the overlapping between small-size BP and large-size BNNS, the thermal conductivity, flame resistance, and mechanical properties of the film are significantly enhanced. Accordingly, the cellulose nanofiber (CNF)-based film has a high thermal conductivity of 42.29 W m–1 K–1 at 50 wt % loading (40 wt % BNNS-NH2 and 10 wt % BP-NH2), which is 777% higher than that of pure CNF. In addition, the peak heat release rate and total heat release of CBP10 decrease by 80.3 and 64.7%, respectively, compared with pure CNF, and the residue is more complete and denser, indicating that the film can effectively reduce and delay the fire hazard.

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Section: Results and Discussionmentioning

confidence: 94%

Optimization of Flexible Nacre-Like Cellulose Nanofiber Films by a Covalent Overlapping Method: Excellent Thermal Conductivity and Superior Flame Resistance

Guo

Peng

Wang

et al. 2023

Ind. Eng. Chem. Res.

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“…Even so, the addition of graphene will inevitably lead to an increase in the electrical conductivity of target composites, which makes it difficult to meet the electrical insulation requirements in some microelectronic fields. Fortunately, different from the graphene, hexagonal boron nitride (h-BN) have alternating boron and nitrogen atoms that replace carbon atoms in the hexagonal honeycomb structure, whose ionic nature of B-N bond endow BNNS with outstanding electrical insulation [ 159 , 160 , 161 , 162 ]. Therefore, the BNNS have been widely utilized in PCMs to develop advanced MEPCMs with synergetic high thermal conductivity and electrical insulation [ 163 , 164 , 165 , 166 , 167 ].…”

Section: Thermal Conductivity Enhancement Of Pcms With Low-dimensiona...mentioning

confidence: 99%

Phase Change Composite Microcapsules with Low-Dimensional Thermally Conductive Nanofillers: Preparation, Performance, and Applications

Yang

Chen

et al. 2023

Polymers

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Phase change materials (PCMs) have been extensively utilized in latent thermal energy storage (TES) and thermal management systems to bridge the gap between thermal energy supply and demand in time and space, which have received unprecedented attention in the past few years. To effectively address the undesirable inherent defects of pristine PCMs such as leakage, low thermal conductivity, supercooling, and corrosion, enormous efforts have been dedicated to developing various advanced microencapsulated PCMs (MEPCMs). In particular, the low-dimensional thermally conductive nanofillers with tailorable properties promise numerous opportunities for the preparation of high-performance MEPCMs. In this review, recent advances in this field are systematically summarized to deliver the readers a comprehensive understanding of the significant influence of low-dimensional nanofillers on the properties of various MEPCMs and thus provide meaningful enlightenment for the rational design and multifunction of advanced MEPCMs. The composition and preparation strategies of MEPCMs as well as their thermal management applications are also discussed. Finally, the future perspectives and challenges of low-dimensional thermally conductive nanofillers for constructing high performance MEPCMs are outlined.

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“…A very important issue that needs to be considered when developing nanocomposites is the interfacial interaction of the continuous polymeric phase and the nanofiller and also the compatibility of the components. , To overcome the above-mentioned limitations, a suitable strategy would be the NC surface functionalization to reduce the hydrophilicity of the cellulose derivative and to achieve superior properties for the final materials. , The multiple OH functionalities from the NC surface represent valuable reactive sites for further chemical modification in order to attain an adequate interface with respect to the hydrophobic polymer matrix, so better properties can be achieved . Among the reported surface modifications from the literature silane treatment, oxidation and esterification proved to be valuable approaches to increase the compatibility of NC with the epoxy matrix.…”

Section: Introductionmentioning

confidence: 99%

Tailoring an Effective Interface between Nanocellulose and the Epoxidized Linseed Oil Network through Functionalization

et al. 2023

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Sustainable nanocomposite materials based on different functionalized nanocellulose (NC) structures embedded in epoxidized linseed oil (ELO) were developed as foundation toward a greener approach for anticorrosive coating evolution. The work leans on functionalization with (3-aminopropyl) triethoxysilane (APTS), (3-glycidyloxypropyl)trimethoxysilane (GPTS), and vanillin (V) of NC structures isolated from plum seed shells, evaluated as potential reinforcing agents for the increase of thermomechanical properties and water resistance of epoxy nanocomposites from renewable resources. The successful surface modification was confirmed from the deconvolution of X-ray photoelectron spectra for C 1s and correlated with Fourier transform infrared (FTIR) data. The secondary peaks assigned to C−O−Si at 285.9 eV and C−N at 286 eV were observed with the decrease of the C/O atomic ratio. Compatibility and efficient interface formation between the functionalized NC and the biobased epoxy network from linseed oil were translated as decreased values for the surface energy of bio-nanocomposites and better dispersion imaged through scanning electron microscopy (SEM). Thus, the storage modulus of the ELO network reinforced with only 1% APTS-functionalized NC structures reached 5 GPa, an almost 20% increase compared with that of the neat matrix. Mechanical tests were applied to assess an increase of 116% in compressive strength for the addition of 5 wt % NCA to the bioepoxy matrix.

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Synergetic integration of thermal conductivity and flame resistance in nacre‐like nanocellulose composites

Cited by 31 publications

References 56 publications

Optimization of Flexible Nacre-Like Cellulose Nanofiber Films by a Covalent Overlapping Method: Excellent Thermal Conductivity and Superior Flame Resistance

Optimization of Flexible Nacre-Like Cellulose Nanofiber Films by a Covalent Overlapping Method: Excellent Thermal Conductivity and Superior Flame Resistance

Phase Change Composite Microcapsules with Low-Dimensional Thermally Conductive Nanofillers: Preparation, Performance, and Applications

Tailoring an Effective Interface between Nanocellulose and the Epoxidized Linseed Oil Network through Functionalization

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