Effect of modified graphene on thermal, mechanical and tribological performance of polyimide based composites

“…This phenomenon is owing to the excellent thermal stability of Gr-PANI 10:1 , its introduction reduces the TGA rate of the PI lm. 34 XPS spectroscopy is further characterized to analyze the elemental compositions and the valence states of Gr, PANI and Gr-PANI 10:1 . The C 1s spectrum of Gr (Fig.…”

Section: Characteristics and Morphologymentioning

confidence: 99%

In situ polymerization of graphene-polyaniline@polyimide composite films with high EMI shielding and electrical properties

Cheng

Zhu

et al. 2020

RSC Adv.

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“…Therefore the addition of modified GO, the friction coefficient, and the wear rate of the material was reduced. The friction coefficient of composites tends to decrease with the increase GO contents, by adding 0.5 wt% modified GO the composites produced lower friction coefficient and wear rate respectively [42]. Xing et al…”

Section: Friction and Wear Of The Polyimide/graphene Compositesmentioning

confidence: 99%

Comparative Study on Tribological Behavior of Graphene/Polyimide and Carbon Fibers/Polyimide Composites: A Review

Daniel¹,

Hong²

2021

WJET

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“…In addition, it also can be found that the complex viscosity of EG-200 °C-4 min samples appears to decrease rapidly, which is mainly attributed to the lubrication action of the thin GNS with large lateral sizes to HDPE melts. 25,26 3.3. Mechanism of the Mixing Temperature Influence on EG Exfoliation.…”

Section: Dynamic Rheology Behaviormentioning

confidence: 99%

Cost-Effective Fabrication of High-Density Polyethylene/Graphene Nanocomposites by an In Situ Exfoliation Method Based on a Series Explosion Effect

Zhong

Xie³

et al. 2022

Ind. Eng. Chem. Res.

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As ideal nanofillers, graphene nanosheets (GNS) are widely used to prepare high-performance graphene-reinforced nanocomposites owing to their excellent properties. However, the high manufacturing cost and low production efficiency of GNS severely restrict their large-scale application. Herein, a cost-effective melt blending approach was demonstrated for facilely preparing high-density polyethylene (HDPE)/GNS nanocomposites by using industrial-grade expanded graphite (EG). The exfoliation and dispersion of GNS in the matrix under different processing temperatures and times have been studied. A series explosion effect generated by the synergy of volumetric extensional rheology and free water can violently and fastly exfoliate pristine EG into few-layer GNS. The in situ exfoliation mechanism revealed that the synergistic effect of the explosive forces of free water and the adhesion between HDPE and GNS can destroy the van der Waals forces between the EG sheets during melt blending, thereby realizing ultrafast exfoliation and uniform dispersion of EG in the HDPE matrix. As expected, the HDPE/GNS nanocomposites showed high crystallinity, excellent thermal conductivity, high dielectric constant, and extremely low dielectric loss. This work provides a new idea for facilely fabricating high-performance polymer-based two-dimensional layered nanocomposites.

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Effect of modified graphene on thermal, mechanical and tribological performance of polyimide based composites

Cited by 10 publications

References 42 publications

In situ polymerization of graphene-polyaniline@polyimide composite films with high EMI shielding and electrical properties

In situ polymerization of graphene-polyaniline@polyimide composite films with high EMI shielding and electrical properties

Comparative Study on Tribological Behavior of Graphene/Polyimide and Carbon Fibers/Polyimide Composites: A Review

Cost-Effective Fabrication of High-Density Polyethylene/Graphene Nanocomposites by an In Situ Exfoliation Method Based on a Series Explosion Effect

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