Enhancing mechanical performances of polystyrene composites via constructing carbon nanotube/graphene oxide aerogel and hot pressing

Xu, Hui; Li, Xiaoru; Li, Peiyao; Ma, Lichun; Li, Hongyan; Shi, Longlong; Wang, Mingye; Chen, Hongen; Gao, Song

doi:10.1016/j.compscitech.2020.108191

Cited by 26 publications

(21 citation statements)

References 43 publications

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“…To confirm the successful fabrication of GO@PS, FTIR analyses for the GO, neat PS, and GO@PS composites with various filler contents of GO were performed, as shown in Figure . Indeed, FTIR of GO has a strong and wide peak at 3200–3500 cm –1 owing to the −OH stretching vibrations . The characteristic absorption peaks at ∼1728 and ∼1611 cm –1 correspond to the CO and CC stretching vibrations, respectively.…”

Section: Results and Discussionmentioning

confidence: 99%

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Directly Grown Polystyrene Nanospheres on Graphene Oxide Enable Efficient Thermal Management

Han

et al. 2021

Ind. Eng. Chem. Res.

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Polymer-based composites with high heat dissipation performance are significant for the thermal management of modern electronic devices. However, it is still a challenge to improve polymer matrix/thermal conductive filler interfacial incompatibility. Here, a onepot in situ growth strategy is adopted to directly grow polystyrene (PS) on the surface of graphene oxide (GO) nanosheets to improve their interfacial adhesion. The as-obtained GO@PS composite shows a low contact thermal resistance and a high-flux heat conduction. As a result, the thermal conductivity (TC) of the GO@PS composite containing 5 wt % GO is 1.582 W/mK. Compared to the neat PS matrix, the TC enhancement efficiency at per 1 wt % GO addition achieves 151%, which is superior to the reported results of PS-based composites. Meanwhile, the GO@PS composite has a rapid response of surface temperature and excellent thermal stability. Therefore, this work can be a general method for addressing the interface challenges of conventional polymer composites, which provide a guided thought for the establishment of the polymer-based composite with a satisfactory TC enhancement coefficient.

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Section: Results and Discussionmentioning

confidence: 99%

“…Indeed, FTIR of GO has a strong and wide peak at 3200−3500 cm −1 owing to the −OH stretching vibrations. 23 The characteristic absorption peaks at ∼1728 and ∼1611 cm −1 correspond to the CO and CC stretching vibrations, respectively. The absorptions at 1396 cm −1 are caused by the bending vibration O−H in −COOH.…”

Section: Resultsmentioning

confidence: 99%

Directly Grown Polystyrene Nanospheres on Graphene Oxide Enable Efficient Thermal Management

Han

et al. 2021

Ind. Eng. Chem. Res.

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“…GO was prepared via an improved Hummers’ method from graphite flakes. CNTs were oxidized with a mixture of sulfuric acid and nitric acid at 100 °C for 8 h, and then the oxidized CNTs were obtained by centrifuging, filtering, and freeze-drying [ 20 ]. Next, the obtained CNTs (0.059 g) were mixed with ethanol (2 ml) in deionized (DI) water (21 mL) by sonication for 1 h. The mixture was then transferred to the GO suspension liquid (8.7 mL) and dispersed by sonication for 3 h (the mass ratio of CNTs to GO was 3:7).…”

Section: Methodsmentioning

confidence: 99%

Investigation of Carbon Nanotube Grafted Graphene Oxide Hybrid Aerogel for Polystyrene Composites with Reinforced Mechanical Performance

Sun

Zhao

et al. 2021

Polymers

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The rational design of carbon nanomaterials-reinforced polymer matrix composites based on the excellent properties of three-dimensional porous materials still remains a significant challenge. Herein, a novel approach is developed for preparing large-scale 3D carbon nanotubes (CNTs) and graphene oxide (GO) aerogel (GO-CNTA) by direct grafting of CNTs onto GO. Following this, styrene was backfilled into the prepared aerogel and polymerized in situ to form GO–CNTA/polystyrene (PS) nanocomposites. The results of X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy indicate the successful establishment of CNTs and GO-CNT and the excellent mechanical properties of the 3D frameworks using GO-CNT aerogel. The nanocomposite fabricated with around 1.0 wt% GO-CNT aerogel displayed excellent thermal conductivity of 0.127 W/m∙K and its mechanical properties were significantly enhanced compared with pristine PS, with its tensile, flexural, and compressive strengths increased by 9.01%, 46.8%, and 59.8%, respectively. This facile preparation method provides a new route for facilitating their large-scale production.

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“…In recent years, the preparation and application of GO aerogels (GOA) has attracted a lot of attention due to their many unique properties, such as light weight, large specific surface area, and network interconnection structure. However, their unstable structures are well known [ 13 , 14 , 15 ]. Carbon nanotubes (CNTs) bridging adjacent GO via π-π bonds could significantly improve the mechanical strength of GOA [ 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Structurally Stable, High-Strength Graphene Oxide/Carbon Nanotube/Epoxy Resin Aerogels as Three-Dimensional Skeletal Precursors for Wave-Absorbing Materials

Zhang

Gao

Zhao

et al. 2022

Gels

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Three-dimensional (3D) graphene oxide aerogel (GOA) is one of the best fillers for composites for microwave absorption. However, its further development has been hindered by the poor mechanical properties. Methodology to improve the mechanical properties of the aerogel remains an urgent challenge. Herein, graphene oxide/carbon nanotube/epoxy resin composite aerogel (GCEA) was successfully prepared by a facile method. The results showed that the prepared GCEA with the hierarchical and 3D cross-linked structures exhibited excellent compression performance, structural and thermal stability, high hydrophilicity, and microwave absorption. The prepared GCEA recovered from multiple large strain cycles without significant permanent deformation. The minimum reflection loss (RL) was −39.60 dB and the maximum effective absorption bandwidth (EAB) was 2.48 GHz. The development of the enhanced GO aerogels will offer a new approach to the preparation of 3D microwave-absorbing skeletal materials with good mechanical properties.

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Enhancing mechanical performances of polystyrene composites via constructing carbon nanotube/graphene oxide aerogel and hot pressing

Cited by 26 publications

References 43 publications

Directly Grown Polystyrene Nanospheres on Graphene Oxide Enable Efficient Thermal Management

Directly Grown Polystyrene Nanospheres on Graphene Oxide Enable Efficient Thermal Management

Investigation of Carbon Nanotube Grafted Graphene Oxide Hybrid Aerogel for Polystyrene Composites with Reinforced Mechanical Performance

Structurally Stable, High-Strength Graphene Oxide/Carbon Nanotube/Epoxy Resin Aerogels as Three-Dimensional Skeletal Precursors for Wave-Absorbing Materials

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