Flame retarding and reinforcing modification of ramie/polybenzoxazine composites by surface treatment of ramie fabric

Li, Nannan; Yan, Hongqiang; Xia, Lei; Mao, Lebo; Fang, Zhengping; Song, Yihu; Wang, Hao

doi:10.1016/j.compscitech.2015.07.013

Cited by 47 publications

(30 citation statements)

References 27 publications

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“…However, due to the increase in environmental awareness and economic problems, the scientific community has focused on the employment of bio‐fillers, such as natural fibers. A variety of bio‐based materials were introduced as benzoxazine resin fillers such as basalt fibers, ramie fabric, chitosan, hemp fibers and sisal in order to further enhance its properties and reduce its various shortcomings …”

Section: Introductionmentioning

confidence: 80%

Non‐Isothermal Curing Kinetics of Alkali‐Treated Alfa Fibers/Polybenzoxazine Composites Using Differential Scanning Calorimetry

2020

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The exploration of curing process of benzoxazine resins, which possess outstanding features, is crucial for practical and advanced applications. In this study, bisphenol A-aniline based benzoxazine (BA-a) composites reinforced with alkali treated alfa fibers (TAF) were prepared. The influence of different loadings of the TAF on the curing kinetics of BA-a was investigated using non-isothermal differential scanning calorimetry (DSC) at different heating rates. Isoconversional integral methods or model free kinetics, namely, the iterative Kissinger-Akahira-Sunose (it-KAS), iterative Flynn-Wall-Ozawa (it-FWO), Sbirrazzuoli methodology (VYA/CE) and Trache-Abdelaziz-Siwa-ni (TAS) methods have been applied to the experimental data in order to evaluate the curing kinetic parameters. The study revealed that the presence of TAF improved the crosslinking reaction of benzoxazine and reduced the activation energy. The pre-exponential factor exhibited the same trend as the activation energy. The reaction model, examined for all composites, showed that all systems were accurately presented by an autocatalytic reaction model. The Avrami-Erofeev model was the most appropriate for describing the cure kinetics and revealed a good agreement with experimental data.

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Section: Introductionmentioning

confidence: 80%

Non‐Isothermal Curing Kinetics of Alkali‐Treated Alfa Fibers/Polybenzoxazine Composites Using Differential Scanning Calorimetry

2020

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“…Methyl p‐toluenesulfonate ( p ‐TMS) (98%) was obtained from Aladdin (China). Phosphorus‐containing poly(DPA‐PDCP) was prepared by interfacial polycondensation of DPA and PDCP according to the previously reported method . Deionized water with a resistance of 18 MΩ was used for all the experiments.…”

Section: Methodsmentioning

confidence: 99%

“…Layer‐by‐layer (LbL) self‐assembly technology, based on the alternating electrostatic attraction of oppositely charged polyelectrolytes, is reported to be capable of fabricating thin films on a surface with tunable properties . Recent years have witnessed the successful applications of the LbL technology for improving the flame retardancy of fabrics .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of flame retardant benzoxazine semi‐biocomposites reinforced by ramie fabrics with bio‐based flame retardant coating

Yan

Cheng

et al. 2017

Polymer Composites

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Natural fibers reinforced benzoxazine bio‐composites are one class of highly attractive engineering materials in automobile, train and aerospace fields because of high thermal stability, good mechanical and improved biodegradability properties. Unfortunately, their poor interface and flammability issues remain unsatisfactorily addressed to date. Herein, we have demonstrated the fabrication of benzoxazine semi‐biocomposites reinforced by ramie fabric which was coated with bio‐based poly(diphenolic acid‐phenyl phosphate) (poly[DPA‐PDCP]) and polyethylenimine (PEI) via layer‐by‐layer self‐assembly method. The results show that the presence of poly(DPA‐PDCP)/PEI coating can significantly improve the interfacial adhesion between fabric and the resin matrix. This enables the tensile strength and flexural strength of as‐prepared semi‐biocomposite to increase by 53% (68.7 MPa) and 113% (120 MPa), respectively. In addition, the resultant semi‐biocomposite shows superior flame retardancy with a V‐0 rating achieved in the UL‐94 test. This work offers an effective approach to fabricate strong and flame retardant benzoxazine semi‐biocomposites. POLYM COMPOS., 39:E480–E488, 2018. © 2017 Society of Plastics Engineers

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“…Understanding of these interactions is key to the development of new materials with enhanced properties. BNZs can result in crosslinked polymers that can act as matrixes in other formulations, such as composite materials, which perhaps is the main use of polybenzoxazines …”

Section: Introductionmentioning

confidence: 99%

Application of Benzoxazine‐Based Dimers, Oligomers, and Polymers as Chelating Agents

Iguchi

Salum

Froimowicz

2018

Macro Chemistry & Physics

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Polybenzoxazines are a relatively new type of thermoset polymer that has primarily been used for the development of composite materials. However, there is an existing interest in expanding the applications for this family of polymers. One way of achieving this goal is by taking advantage of the molecular structure, where the presence of oxygen and nitrogen atoms with lone electron pairs allows the formation of coordination complexes and chelates between the benzoxazine oligomers and polymers with metal ions. This article is focused on studying the relationship between the spatial conformation of the polybenzoxazine and the capacity to form coordination complexes from a fundamental point of view as well as practical applications of this concept. Thus, it can be seen that use of polybenzoxazines for the removal of heavy metals from water and the use of benzoxazine dimers for the synthesis of CeO2 nanoparticles are examples of very different applications based on the same working principle.

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Flame retarding and reinforcing modification of ramie/polybenzoxazine composites by surface treatment of ramie fabric

Cited by 47 publications

References 27 publications

Non‐Isothermal Curing Kinetics of Alkali‐Treated Alfa Fibers/Polybenzoxazine Composites Using Differential Scanning Calorimetry

Non‐Isothermal Curing Kinetics of Alkali‐Treated Alfa Fibers/Polybenzoxazine Composites Using Differential Scanning Calorimetry

Fabrication of flame retardant benzoxazine semi‐biocomposites reinforced by ramie fabrics with bio‐based flame retardant coating

Application of Benzoxazine‐Based Dimers, Oligomers, and Polymers as Chelating Agents

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