Multifunctional Ti3C2TX MXene/Aramid nanofiber/Polyimide aerogels with efficient thermal insulation and tunable electromagnetic wave absorption performance under thermal environment

Feng, Yongbao; Yao, Junru; Jin, Liqiang; Huyan, Wenjun; Zhou, Jintang; Yao, Zhengjun; Liu, Peijiang; Tao, Xinyong

doi:10.1016/j.compositesb.2022.110161

Cited by 82 publications

(28 citation statements)

References 51 publications

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“…Thermal conductivity of PIFs in the (a) vertical direction and (b) horizontal direction; (c) comparison of thermal conductivity between this work and literature values, including ANF/PI aerogel (), MXene/PI aerogel (), silica aerogel (), PI/aramid sponge (), PI/ANF aerogel (), PI foam plastic (), PI/red phosphorus/graphene foam (), MXene/ANF/PI aerogel (), PI foam (), CNTs@CoFe2O4/PI aerogel (), IBNR-PI aerogel (); (d) thermal insulation mechanism of PIFs in different directions; (e) changes of top surface temperature of PIFs in both vertical and horizontal directions; (f) infrared thermal images of PIFs [f 1 : side view (i.e., horizontal direction), f 2 : top view (vertical direction), f 3 : 3D infrared thermal images].…”

Section: Resultsmentioning

confidence: 97%

“…The mechanical properties of PIFs are closely related to their internal porous structure . PIFs exhibited anisotropic performance in terms of compressive properties, which was ascribed to the directional growth of porous structure, as given in Figure and Figure S2.…”

Section: Resultsmentioning

confidence: 98%

“…The mechanical properties of PIFs are closely related to their internal porous structure. 52 PIFs exhibited anisotropic performance in terms of compressive properties, which was ascribed to the directional growth of porous structure, as given in Figure 5 and Figure S2. The compression/release stress−strain (σ−ε) curves of PIFs at a 50% strain rate in both horizontal and vertical directions are displayed in Figure 5a,b, respectively.…”

Section: Mechanical Propertiesmentioning

confidence: 97%

See 2 more Smart Citations

Microwave-Assisted Foaming of Mechanically Robust Lightweight Polyimide Foams with Anisotropic Pore Structures for Thermal Insulation Applications

Luo

Wang

et al. 2023

Ind. Eng. Chem. Res.

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Mechanically robust lightweight polyimide foams (PIFs) with anisotropic pore structures were successfully prepared using microwave-assisted foaming and thermal imidization. The foaming behavior of polyester ammonium salt powders was assessed by rheological and TG-FTIR analyses. The release of volatile gases (e.g., H 2 O, tetrahydrofuran, and methanol) between 85 and 150 °C led to the directional growth of foam pores during microwave treatment, which was critical for endowing PIFs with excellent thermal insulation and mechanical properties. The use of 4,4′-diaminobenzanilide (DABA) as the copolymerization reagent enhanced the compressive strength@50% strain (92.25 kPa) in the vertical direction (i.e., pore growth direction) and high elasticity in the horizontal direction (compression response rate reached up to 98.95%). The PIFs demonstrated exceptional thermal stability under both inert and air atmospheres. Meanwhile, PIFs exhibited anisotropic thermal insulation behavior, exhibiting a thermal conductivity as low as 0.0264 W/(m•K) in the horizontal direction (i.e., perpendicular to the pore growth direction), which was ideal for thermal insulation purpose under high temperatures. Therefore, PIFs with excellent mechanical performance and exceptional heat resistance and thermal insulation properties were facilely prepared, which show promising applications in high-end engineering sectors.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 98%

Section: Mechanical Propertiesmentioning

confidence: 97%

See 1 more Smart Citation

Microwave-Assisted Foaming of Mechanically Robust Lightweight Polyimide Foams with Anisotropic Pore Structures for Thermal Insulation Applications

Luo

Wang

et al. 2023

Ind. Eng. Chem. Res.

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“…The extensive use of electromagnetic waves (EM), which offers many conveniences for people’s lives but also results in electromagnetic radiation pollution that harms both electronic devices and the human body, is inextricably linked to the development of electronic items and equipment. − As a result, an increasing number of researchers are focused on researching effective EMA materials in the 2–18 GHz frequency range. The perfect EM material frequently exhibits the properties of being light in weight, thin in thickness, having a wide absorption band, and performing well in absorption. − Due to their unique structures and dimensions, two-dimensional materials in recent years have demonstrated excellent EMA properties, including MXene, − graphene, − graphite, − carbon fibers, − and others.…”

Section: Introductionmentioning

confidence: 99%

Covalent Bonding of MXene/Reduced Graphene Oxide Composites for Efficient Electromagnetic Wave Absorption

Yang

Huang

Han

et al. 2023

ACS Appl. Nano Mater.

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Due to their high conductivity and unique surface chemical characteristics, MXene and reduced graphene oxide (rGO) have received a great deal of attention in the field of electromagnetic wave absorption (EMA). This study describes the covalent modification of rGO with amino-functionalized MXene to create an electromagnetic absorbent material called MXene-rGO composite. After amidation, an amide bond successfully assembles MXene and rGO. The absorber performs admirably when the mass ratio of MXene to rGO is 1:2 (sample MG-3). With a thickness of 2.7 mm, the best reflection loss (RL) is −47.98 dB at 6.4 GHz. Additionally, the best effective absorption bandwidth (EAB) (RL< −10 dB) is 4.08 GHz (11.84–15.92 GHz) with a 1.4 mm matching thickness. The performance of the EMA can be obtained by adjusting the dielectric parameters and the migration rate of the electrons using the covalent bond as a stable carrier channel. The high dielectric loss, superior impedance matching, and strong attenuation ability contribute to the great absorption performance.

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“…The characteristic of high specific surface area endows ANF with excellent processibility and makes it a kind of promising nanobuilding block . The excellent processibility of ANF has attracted plenty of researchers to focus on the design of diverse functional materials, such as electromagnetic interference shielding materials, − battery separator materials, − insulation materials, , sensor materials, , and structural materials. − Recently, there are also some works focused on the preparation of ANF/BNNS thermal conductive films . For instance, Fu et al reported a highly thermoconductive (46.7 W m –1 K –1 ) and super-flexible film that consisted of one-dimensional (1D) rigid ANFs and 2D BNNSs .…”

Section: Introductionmentioning

confidence: 99%

Self-Stacked 3D Anisotropic BNNS Network Guided by Para-Aramid Nanofibers for Highly Thermal Conductive Dielectric Nanocomposites

Miao

Xie

et al. 2023

ACS Appl. Mater. Interfaces

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The enhancement of the heat-dissipation property of polymerbased composites is of great practical interest in modern electronics. Recently, the construction of a three-dimensional (3D) thermal pathway network structure for composites has become an attractive way. However, for most reported high thermal conductive composites, excellent properties are achieved at a high filler loading and the building of a 3D network structure usually requires complex steps, which greatly restrict the large-scale preparation and application of high thermal conductive polymer-based materials. Herein, utilizing the framework-forming characteristic of polymerization-induced para-aramid nanofibers (PANF) and the high thermal conductivity of hexagonal boron nitride nanosheets (BNNS), a 3D-laminated PANF-supported BNNS aerogel was successfully prepared via a simple vacuum-assisted self-stacking method, which could be used as a thermal conductive skeleton for epoxy resin (EP). The obtained PANF-BNNS/EP nanocomposite exhibits a high thermal conductivity of 3.66 W m −1 K −1 at only 13.2 vol % BNNS loading. The effectiveness of the heat conduction path was proved by finite element analysis. The PANF-BNNS/EP nanocomposite shows outstanding practical thermal management capability, excellent thermal stability, low dielectric constant, and dielectric loss, making it a reliable material for electronic packaging applications. This work also offers a potential and promotable strategy for the easy manufacture of 3D anisotropic high-efficiency thermal conductive network structures.

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Multifunctional Ti3C2TX MXene/Aramid nanofiber/Polyimide aerogels with efficient thermal insulation and tunable electromagnetic wave absorption performance under thermal environment

Cited by 82 publications

References 51 publications

Microwave-Assisted Foaming of Mechanically Robust Lightweight Polyimide Foams with Anisotropic Pore Structures for Thermal Insulation Applications

Microwave-Assisted Foaming of Mechanically Robust Lightweight Polyimide Foams with Anisotropic Pore Structures for Thermal Insulation Applications

Covalent Bonding of MXene/Reduced Graphene Oxide Composites for Efficient Electromagnetic Wave Absorption

Self-Stacked 3D Anisotropic BNNS Network Guided by Para-Aramid Nanofibers for Highly Thermal Conductive Dielectric Nanocomposites

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