Improved dispersion of reduced graphene oxide in benzoxazine composites via electrostatic interaction with M‐cresol

Du, Jie; Li, Shuiquan; Wang, Meichen; Liu, Huihui; Wang, Yan; Song, Ping; Wang, Zhi

doi:10.1002/pc.27343

Cited by 4 publications

(2 citation statements)

References 54 publications

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“…Additionally, the FTIR spectra of KH570‐SA‐F/BA‐a at different curing stages under thermal curing were included for comparison purposes (Figure 4B). The characteristic absorption peaks at 948, 1029, and 1229 cm −1 represent the oxazine ring, symmetric and asymmetric absorption peaks of COC, respectively 49–51 . These characteristic peaks significantly diminished after 15 min of MC.…”

Section: Resultsmentioning

confidence: 97%

Ultra‐fast curing of benzoxazine with surface modified fly ash‐assisted microwave: Achieving excellent comprehensive performances

Cao,

Liu,

Jiang

et al. 2023

Polymer Composites

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Benzoxazine has aroused a lot of research interest because of its high mechanical performance and excellent thermal stability in polybenzoxazines. However, it suffers from its high curing temperature and long curing time, which necessitate resolution. This study addresses this issue by employing a surface‐modified fly ash‐assisted microwave curing method to achieve ultra‐fast benzoxazine curing within 15 min. The impact strength of the resulting cured product displayed an increasing‐then‐decreasing trend with the addition of fly ash, reaching a maximum impact strength of 18.71 ± 1.20 kJ/m2 at a 3% fly ash content. This value is 113.3% higher than the impact strength of pure PBA‐a. Additionally, when using the same amount of fly ash, the microwave‐cured product exhibited a flexural strength of up to 135.9 MPa and a flexural modulus of up to 6.71 GPa, surpassing those of pure PBA‐a by 28.7% and 33.1%, respectively. Moreover, the glass transition temperature (Tg) increased by 19.56°C. Furthermore, there was a slight improvement in flexural strength compared to the heat‐cured product, and no significant loss in thermal properties was observed. The method demonstrated in this study presents a novel approach for the rapid molding and preparation of benzoxazine in composites.

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Section: Resultsmentioning

confidence: 97%

Ultra‐fast curing of benzoxazine with surface modified fly ash‐assisted microwave: Achieving excellent comprehensive performances

Cao,

Liu,

Jiang

et al. 2023

Polymer Composites

Self Cite

View full text Add to dashboard Cite

show abstract

“…Furthermore, the introduction of a large number of conductive fillers could easily lead to problems such as filler agglomeration, decreased mechanical performance, and increased costs. [138][139][140] The inorganic carbon-based nanofillers with superior conductivities and high aspect ratios could construct well-organized interconnected networks in polymer matrix, resulting in outstanding shielding properties of CPCs. [141][142][143][144] For instance, Bansala et al 145 noted that when the thermally exfoliated GNSs were uniformly distributed in thermoplastic polyurethane (TPU), the intensity of incident EMWs was decreased by $99.9% with the nanofiller content of 5.5 vol% in the frequency of Ku band.…”

Section: Filled Cpcsmentioning

confidence: 99%

Recent advances in structural design of conductive polymer composites for electromagnetic interference shielding

Zheng,

Wang,

Zhu

et al. 2023

Polymer Composites

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The proliferation of electronic devices and wireless communication in our daily lives has led to a significant increase in electromagnetic pollution. This issue poses a serious threat to the proper functioning of electronic equipment as well as human health. Therefore, the investigation of materials with superior electromagnetic interference (EMI) shielding capabilities has garnered growing interest. In this paper, the mechanisms of EMI shielding were first introduced briefly. It was noted that the development of advanced EMI shielding materials involved adhering to principles such as minimizing reflection loss, enhancing absorption loss, and incorporating multiple internal reflections. The construction and shielding properties of traditional EMI shielding materials were introduced. Unlike metal materials with high densities and reflection loss, lightweight conductive polymer composites (CPCs) have been the most promising EMI shielding materials. Meanwhile, carbon‐based nanofillers such as carbon nanotubes and graphene nanosheets, along with two‐dimensional transition metal carbonitrides MXenes Ti3C2Tx, have emerged as the most promising and versatile conductive nanofillers for CPCs. The EMI shielding performance and loss mechanism of CPCs with homogeneous structure, segregated structure, laminated structure, and porous structure were introduced in detail. It was noted that the EMI shielding performance could be significantly improved by incorporating multiple structures into the same CPCs, such as a rational combination of segregated and porous structures. Finally, the challenges and development trends of CPCs for EMI shielding applications were discussed.Highlights Mechanisms of EMI shielding were introduced from aspect of energy dissipation. Structure–property of traditional EMI shielding materials was described. EMI shielding performance of CPCs with different structures was summarized. Future challenges and growing trends of CPCs for EMI shielding were discussed. Absorption‐dominated loss and multiple structure design were emphasized.

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Advanced Research on Graphene‐Based Nano‐Materials: Synthesis, Structure, Dispersibility and Tribological Applications

Yang,

Chen,

et al. 2024

ChemNanoMat

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In recent years, graphene‐based nanomaterials have attracted extensive attention because of their excellent physical and chemical properties, such as high strength, high conductivity, high thermal conductivity and excellent lubrication performance. Here, the latest research progresses of graphene‐based nanomaterials are reviewed in this paper, and its synthesis method, unique structure, dispersion improvement strategy and wide application in tribology are emphatically discussed. Graphene‐based materials are synthesized by typical chemical vapor deposition and reduced graphene oxide, showing nanoporous structure characteristics and excellent layered structure. Furthermore, through adjusting the chemical structure for the material, the graphene‐based materials with specific lubricating properties can be designed to meet the use requirements under different working conditions. In view of the easy agglomeration of graphene, physical and chemical dispersion methods, such as in‐situ polymerization and functionalization treatment, were introduced, which significantly improved its dispersibility in the matrix. In tribology, graphene‐based nanocomposites present the excellent anti‐friction and anti‐wear properties, which effectively reduce the coefficient of friction and prolong the service life of materials with forming the stable lubricating films. The summary for graphene‐based materials provides theoretical basis and technical support for applications in high‐end manufacturing, energy storage, and protective coatings.

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Improved dispersion of reduced graphene oxide in benzoxazine composites via electrostatic interaction with M‐cresol

Cited by 4 publications

References 54 publications

Ultra‐fast curing of benzoxazine with surface modified fly ash‐assisted microwave: Achieving excellent comprehensive performances

Ultra‐fast curing of benzoxazine with surface modified fly ash‐assisted microwave: Achieving excellent comprehensive performances

Recent advances in structural design of conductive polymer composites for electromagnetic interference shielding

Advanced Research on Graphene‐Based Nano‐Materials: Synthesis, Structure, Dispersibility and Tribological Applications

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