The impact of polymer matrix blends on thermal and mechanical properties of boron nitride composites

Zhou, Tony; Smith, Matthew; Berenguer, Joao Paulo; Quill, Tyler J.; Cola, Baratunde A.; Kalaitzidou, Kyriaki; Bougher, Thomas L.

doi:10.1002/app.48661

Cited by 16 publications

(6 citation statements)

References 17 publications

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“…The two peaks of PW were ascribed to the melting of different molecular weight fraction of the wax that is, solid–solid transition and the melting of the crystallites respectively. Similar results were reported by as Molefi et al, [ 20 ] who studied the comparison of LDPE, LLDPE, and HDPE as matrices for phase change materials based on a soft Fischer‐Tropsch paraffin wax and Zhou et al, [ 30 ] who investigated the thermal properties of paraffin/HDPE phase change blends. Both authors observed that PW showed two endothermic peaks which were attributed to the melting of solid–solid phase transition and melting of crystallites, as explained earlier.…”

Section: Resultssupporting

confidence: 84%

The effect of boron nitride, carbon nanotubes, and their synergy on the properties of LLDPE and LLDPE/wax blend

Mokoena

Mochane

Mokhena

et al. 2022

Polymer Engineering & Sci

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This study deals with the effect of two types of conductive fillers (viz., boron nitride and single walled carbon nanotubes) on the properties of the linear low-density polyethylene (LLDPE) matrix and LLDPE/paraffin wax (PW) blend. Pure LLDPE and paraffin wax/LLDPE blend (30/70) were meltmixed with 2 wt% content of boron nitride (BN) and single walled carbon nanotube (SWCNT), as well as their synergy at 2 wt%. Because it is wellknown that both conductive fillers were able to improve the thermal conductivity of the paraffin wax/polymer blends, the aim of this study was to focus on the effect of both conductive fillers on the dispersion of paraffin wax into LLDPE matrix, mechanical properties, crystallization behavior, and thermal stability of the LLDPE/wax blend. Scanning electron microscopy (SEM) images of the LLDPE/paraffin wax blends depicted a phase separated system, which was further supported by two separate peaks from the differential scanning calorimetry (DSC). The morphology of the system showed that the addition of boron nitride (BN) into the LLDPE/paraffin wax blend had no affinity with the paraffin wax, while the addition of single walled carbon nanotubes (SWCNT) showed better dispersion into the LLDPE/paraffin wax/BN blend composites. The incorporation of the SWCNT and its synergy with BN enhanced the thermal stability of the LLDPE.

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Section: Resultssupporting

confidence: 84%

The effect of boron nitride, carbon nanotubes, and their synergy on the properties of LLDPE and LLDPE/wax blend

Mokoena

Mochane

Mokhena

et al. 2022

Polymer Engineering & Sci

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“…Composites filled with hBN can be processed by injection molding and extrusion, as opposed to the other two forms of BN, which have maximum hardness and are very abrasive materials. Numerous authors demonstrated thermally conductive composites filled with hBN on the basis of epoxy resins, 21,22 polyimide, 23 polyethylene, [24][25][26] polytetrafluoroethylene, 27 and so on. Unlike graphite, hBN is a good insulator of a non-black color, and is therefore more applicable as filler for heat-releasing materials that require a purely white appearance of final products, for example, heat sinks for LED lighting devices.…”

Section: Introductionmentioning

confidence: 99%

A comparative study on thermal conductivity and permittivity of composites based on linear low‐density polyethylene and poly(lactic acid) filled with hexagonal boron nitride

Lebedev

2021

Polymer Composites

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Thermal conductivity (λ) and permittivity (ε 0 ) of polymer composites based on linear low-density polyethylene (LLDPE) and poly(lactic acid) (PLA) filled with hexagonal boron nitride (hBN) were considered in this work. It is found that all developed composites possess dielectric properties and enhancement thermal conductivity compared with neat polymer matrices. Unlike carbonaceous materials (carbon black, graphite, graphene, carbon nanotubes), hBN is a good insulator and is therefore more applicable as a filler for heat-releasing materials with a purely white appearance. At the same time, both LLDPE/ hBN and PLA/hBN composites at 40 wt% filler content possess the comparable value of λ about 0.7 W/(m K), which is almost 95% and 250% higher than those for the neat LLDPE and PLA, respectively.

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“…Liu et al 11 prepared a polyetherimide (PEI)‐based composite that reinforced by multiwalled carbon nanotubes (MWCNTs) through in‐situ polymerization, from which the obtained tensile strength and modulus were increased by 22.6% and 39.5% in comparison with PEI, respectively. Thus, introducing appropriate fillers is widely proved as an effective strategy to improve the overall mechanical properties of polymers and to further endow composites with multitudinous functional properties 12–15 …”

Section: Introductionmentioning

confidence: 99%

The synergistic improvement in mechanical strength and toughness obtained in epoxy‐based composites incorporating with carbon nanotubes‐polymer hybrid construction

Ding

Yin

et al. 2023

J of Applied Polymer Sci

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In order to meet the ever‐increasing demands of complex engineering applications, it is necessary to design the polymer‐based composites with the synergistic improvements in strength and toughness. Herein, the novel carbon nanotubes (CNT)‐bismaleimide (BMI) hybrid construction (CBH) was prepared through mechanical blending and pulverizing. The as‐prepared CBH with a stable structure and well‐regulated morphological construction was employed as a special functional filler to endow the epoxy‐based composites with a significantly enhanced overall mechanical property. Due to CBH can provide a multiscaled interfacial interaction with matrix, the composite loaded with 1 wt% CBH exhibited the synchronously improved both tensile modulus (1.31 GPa) and toughness (1.89 MJ m−3), which are 27.18% and 209.83% higher than those of pure epoxy, respectively. Moreover, good interfacial compatibility between CBH and matrix allows the composite loaded with 1 wt% CBH to exhibit the thermal conductivity of 0.18 W m−1 K−1, which was 28.57% higher than pure epoxy (0.14 W m−1 K−1). Be different from many other CNTs‐loaded counterparts, the aligned‐CNTs loaded composite showed a well‐maintained insulating feature. The novel carbon nanotubes‐polymer hybrid construction expands the application range of epoxy‐based insulating composites by optimizing their mechanical and thermal properties.

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The impact of polymer matrix blends on thermal and mechanical properties of boron nitride composites

Cited by 16 publications

References 17 publications

The effect of boron nitride, carbon nanotubes, and their synergy on the properties of LLDPE and LLDPE/wax blend

The effect of boron nitride, carbon nanotubes, and their synergy on the properties of LLDPE and LLDPE/wax blend

A comparative study on thermal conductivity and permittivity of composites based on linear low‐density polyethylene and poly(lactic acid) filled with hexagonal boron nitride

The synergistic improvement in mechanical strength and toughness obtained in epoxy‐based composites incorporating with carbon nanotubes‐polymer hybrid construction

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