Filler network structure in graphene nanoplatelet (GNP)-filled polymethyl methacrylate (PMMA) composites: From thermorheology to electrically and thermally conductive properties

Yang, Bin; Yang, Piaoping; Yu, Yangnan; Wu, Jiangqi; Xia, Ru; Wang, Shuqin; Wang, Yingying; Su, Lifen; Miao, Jibin; Qian, Jiasheng; Shi, You; Tu, Youlei

doi:10.1016/j.polymertesting.2020.106575

Cited by 42 publications

(22 citation statements)

References 55 publications

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“…In Figure , the three-dimensional temperature fields of the composites with varied filler contents as functions of the position and heating time were quantitatively acquired via an enthalpy transformation method (ETM), in which enthalpy ( H ) is treated as a dependent variable in addition to temperature ( T ) with the energy equations discretized into a set of equations containing both H and T , and ETM has been proven to be fairly suitable for the generalized multi-dimensional phase-change issues. − …”

Section: Resultsmentioning

confidence: 99%

Enhanced Thermally Conductive and Microwave Absorbing Properties of Polymethyl Methacrylate/Ni@GNP Nanocomposites

Yang

Jia

et al. 2021

Ind. Eng. Chem. Res.

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In this work, Ni@GNP nanohybrids fabricated via an in situ reduction method were incorporated into polymethyl methacrylate (PMMA) to prepare PMMA/Ni@GNP nanocomposites via solution blending and hot-pressing. The Ni nanoparticles with an average diameter of 70–80 nm were observed to successfully grow on the GNP surface via SEM and TEM. Both thermally conductive and microwave absorbing properties of the prepared composites were intensively investigated. A reflection loss test experimentally suggested that the PMMA/Ni@GNP composites showed a good microwave absorbing property, among which the composite containing 30 wt % Ni@GNP displayed the best microwave absorption performance (with a value of −30 dB for RL min in the C band). The thermal conduction behavior of the composites was jointly studied by infrared thermal imaging (ITI) and enthalpy transformation method together with a four-parameter model. The average heating rate during an initial stage was obviously found to increase from 65.4 to 103.2 °C/min, indicating that a well-defined heat conduction network gradually formed in the composites, which exerted positive influence on heat conduction. The composites generally bore perfect thermal conductivities (e.g., with a maximum in-plane thermal conductivity of 9.02 W/m·K and a maximum out-of-plane value of 1.29 W/m·K), and the variations of thermal conductivity versus filler loading should be attributed to the construction of an anisotropically thermally conductive network in the composites. The PMMA/Ni@GNP composites with desirable microwave absorption and thermal conductivity would find potential applications in 5G communication devices.

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Section: Resultsmentioning

confidence: 99%

Enhanced Thermally Conductive and Microwave Absorbing Properties of Polymethyl Methacrylate/Ni@GNP Nanocomposites

Yang

Jia

et al. 2021

Ind. Eng. Chem. Res.

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“…The temperature corresponding to the peak of tan δ transformation can be deemed as the glass transition temperature (T g ), and T g could be significantly affected by particle's size, orientation and dispersion, as well as its interfacial bonding with the polymer. 48 decrease in glass transition temperature. 49 This indicated that ADP could indeed reduce the thermal properties of composites.…”

Section: Dynamic Mechanical Thermal Analysismentioning

confidence: 94%

Rheological, flame retardancy, and thermomechanical properties of polymethyl methacrylate composites: Effects of flame retardant and toughener

Yang

Shi

et al. 2022

J of Applied Polymer Sci

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“…Thermoplastic materials are commonly the matrix of conductive polymer composites, such as polypropylene (PP), 137 polyethylene (PE), 138 polymethyl methacrylate (PMMA), 139 poly-styrene (PS), 140 and poly(vinylidene fluoride) (PVDF). 141 Although these composite materials have a high mechanical strength and electromagnetic shielding effect, they generally have low flexibility and elasticity, leading to limited applications.…”

Section: Thermoplastic Elastomersmentioning

confidence: 99%

A journey of thermoplastic elastomer nanocomposites for electromagnetic shielding applications: from bench to transitional research

2022

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Filler network structure in graphene nanoplatelet (GNP)-filled polymethyl methacrylate (PMMA) composites: From thermorheology to electrically and thermally conductive properties

Cited by 42 publications

References 55 publications

Enhanced Thermally Conductive and Microwave Absorbing Properties of Polymethyl Methacrylate/Ni@GNP Nanocomposites

Enhanced Thermally Conductive and Microwave Absorbing Properties of Polymethyl Methacrylate/Ni@GNP Nanocomposites

Rheological, flame retardancy, and thermomechanical properties of polymethyl methacrylate composites: Effects of flame retardant and toughener

A journey of thermoplastic elastomer nanocomposites for electromagnetic shielding applications: from bench to transitional research

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