ORCID Profile
0000-0002-6454-5208
Current Organisation
University of Southern Queensland - Springfield Campus
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Materials engineering | Polymers and plastics | Functional materials | Composite and hybrid materials
Publisher: IOP Publishing
Date: 14-03-2018
Publisher: Springer Science and Business Media LLC
Date: 13-03-2023
Publisher: MDPI AG
Date: 14-02-2020
DOI: 10.3390/NANO10020330
Abstract: A facile method for the preparation of microwave absorbers with low density, high microwave absorptivity, and broad band is of paramount importance to the progress in practical application. Herein, commonly-used metal organic frameworks (MOFs) prepared just by mechanical stirring in methanol at room temperature were chosen as sacrificial templates to synthesize porous carbon composites with tunable dielectric and magnetic properties. With the replacement of Co atoms on the surface of zeolitic imidazolate framework-67 (ZIF-67) by Zn atoms, a Co-doped porous carbon composite with a low-dielectric amorphous carbon/Zn shell was constructed after annealing, leading to excellent impedance matching condition. Consequently, the as-obtained composite (Co/C@C-800) shows marvelous microwave absorption properties with an absorption capacity of −43.97 dB and a corresponding effective absorption bandwidth of 4.1 GHz, far exceeding that of the traditional porous carbon and composites directly derived from ZIF-67. The results provide a convenient way to modify MOFs for enhanced microwave absorption materials from the synergy of dielectric and magnetic losses.
Publisher: Elsevier BV
Date: 03-2022
Publisher: Elsevier BV
Date: 06-2022
Publisher: Elsevier BV
Date: 2023
Publisher: Wiley
Date: 21-06-2018
DOI: 10.1002/PAT.4368
Publisher: Elsevier BV
Date: 09-2016
Publisher: Wiley
Date: 11-07-2018
DOI: 10.1002/PAT.4400
Publisher: Elsevier BV
Date: 04-2022
Publisher: Elsevier BV
Date: 10-2023
Publisher: Elsevier BV
Date: 04-2020
Publisher: Elsevier BV
Date: 12-2023
Publisher: Springer Science and Business Media LLC
Date: 27-10-2020
Publisher: Elsevier BV
Date: 09-2016
Publisher: Elsevier BV
Date: 11-2019
Publisher: American Chemical Society (ACS)
Date: 10-08-2015
Publisher: American Chemical Society (ACS)
Date: 22-04-2022
Publisher: Frontiers Media SA
Date: 23-07-2021
DOI: 10.3389/FMATS.2021.712188
Abstract: It has been significant yet challenging to recycle and reuse different kinds of wastes because of their mass production within society. Many efforts have been conducted to reuse wastes in different fields. Interestingly, some wastes have been employed to replace traditional petroleum-based flame retardants for polymeric materials. This review focuses on the recent development of waste flame retardants and their impacts on thermal stability, flame retardancy, and smoke suppression of polymers, followed by representative flame-retardant mechanisms. Finally, the key challenges associated with waste flame retardants are presented, and some future perspectives are proposed.
Publisher: American Chemical Society (ACS)
Date: 31-03-2020
Publisher: Wiley
Date: 06-02-2020
DOI: 10.1002/APP.49090
Publisher: Springer Science and Business Media LLC
Date: 24-10-2016
Publisher: Elsevier BV
Date: 2024
Publisher: American Chemical Society (ACS)
Date: 02-02-2021
Publisher: Elsevier BV
Date: 02-2023
Publisher: Wiley
Date: 11-04-2023
DOI: 10.1002/APP.53937
Abstract: Due to the plasticizing effect, the phosphorus‐derived flame retardants often imparted flame retardancy to thermosetting resins at the expense of heat resistance. To address this issue, the phosphorous/nitrogen flame retardant (DOPO‐TGIC) and 4,4′‐diphenyl methane diisocyanate (MDI) were covalently introduced into the cross‐linked network of vinyl ester resin (VER) by the reaction of the OH groups in DOPO‐TGIC and VER and the NCO groups in MDI. Thus, an intrinsically flame‐retardant VER was obtained. The as‐prepared VER s le exhibited increased glass‐transition temperature ( T g ) relative to virgin VER s le because DOPO‐TGIC served as an additional cross‐linking point during curing. Meanwhile, the P/N‐containing VER s le featured superior flame‐retardant properties, with a UL‐94V‐0 classification. Compared with VER s le, the peak heat release rate (PHRR) and total heat release (THR) of the P/N‐containing VER s le were reduced by 55.6% and 44.0%, respectively. The improved flame retardancy was mainly due to the suppressed burning reaction in the gas phase and improved carbonization capacity in the condensed phase. Therefore, this work proposes a novel and effective strategy for addressing the trade‐off between T g and flame retardancy of thermosetting resins.
Publisher: Elsevier BV
Date: 02-2023
Publisher: Elsevier BV
Date: 05-2019
Publisher: Springer Science and Business Media LLC
Date: 26-04-2019
Publisher: Elsevier BV
Date: 02-2020
Publisher: Elsevier BV
Date: 03-2020
Publisher: Elsevier BV
Date: 2023
Publisher: Elsevier BV
Date: 05-2020
Publisher: Elsevier BV
Date: 07-2020
Publisher: Elsevier BV
Date: 11-2019
Publisher: Elsevier BV
Date: 03-2020
DOI: 10.1016/J.JHAZMAT.2019.121984
Abstract: The development of phosphorus-containing flame retardants combining good compatibility with matrix, low curing temperature, and mechanically reinforcing effect has remained a major challenge. Herein, we reported the synthesis of a liquid flame-retardant curing agent (DA) via the nucleophilic substitution between diphenylphosphinic chloride and 1-(3-aminopropyl)-imidazole (AI). DA exhibited good blending and latency towards epoxy resin (EP) at room temperature. According to DSC studies, DA could rapidly cure EP at moderate temperature. Compared with EP/AI s le, EP/DA s les displayed comparable or higher glass transition temperature (T
Publisher: Elsevier BV
Date: 2022
Publisher: Elsevier BV
Date: 09-2019
Publisher: Springer Science and Business Media LLC
Date: 05-06-2019
Publisher: IOP Publishing
Date: 06-06-2018
Publisher: SAGE Publications
Date: 28-07-2016
Abstract: Epoxy resins were modified with 10-(2,5-dihydroxyl phenyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and 1,1′-(methylenedi-4,1-phenylene) bismaleimide (BDM). The resulting blends were then cured with 4, 4′-diaminodiphenyl sulfone. Thermal properties of the cured epoxy resins were investigated by differential scanning calorimetry and thermogravimetric analysis. Flame retardancy of the cured epoxy resins was checked by limiting oxygen index test, UL-94 vertical burning test, and cone calorimeter test. The char residue after cone calorimeter test was investigated by scanning electron microscopy/energy-dispersive X-ray analyses. The results indicated that the cured resins exhibited high glass transition temperature and excellent flame-retardant properties. BDM promoted the carbonization property of phosphorus-containing epoxy resin and facilitated the formation of cross-linked char layer with compact and continuous structure, thus enhancing the flame-retardant properties.
Publisher: Elsevier BV
Date: 05-2021
Publisher: IOP Publishing
Date: 24-04-2018
Publisher: American Chemical Society (ACS)
Date: 16-06-2021
Publisher: Springer Science and Business Media LLC
Date: 29-04-2017
Publisher: Elsevier BV
Date: 2022
Publisher: Elsevier BV
Date: 12-2022
Publisher: Elsevier BV
Date: 02-2022
Publisher: Elsevier BV
Date: 06-2016
Publisher: IOP Publishing
Date: 09-02-2018
Publisher: Wiley
Date: 20-11-2022
DOI: 10.1002/POL.20220586
Abstract: In this study, a well‐designed benzimidazolyl‐substituted cyclotriphosphazene (BICP) was used as a versatile additive to enhance the integrated performances of bisphenol A‐aniline based benzoxazine (BA‐a). Our results showed that the BA‐a/BICP systems possessed lower curing temperature than virgin BA‐a due to the catalytic action of tertiary amines in BICP. Moreover, the thermal resistance of BA‐a/BICP thermosets was better than that of BA‐a thermoset because of the rigid structure and high thermal stability of BICP. The introduction of BICP significantly enhanced the fire safety of BA‐a. For instance, the limiting oxygen index and UL‐94 rating of BA‐a/BICP‐11 s le with 11 wt% of BICP were up to 35.2% and V‐0. Compared with BA‐a, the total smoke production and peak smoke production rate of BA‐a/BICP‐17 s le with 17 wt% of BICP were reduced by 36.5% and 39.3%, respectively. The improved fire safety of BA‐a/BICP s le was mainly due to the condensed‐phase effect of BICP. This work provides a simple strategy for the development of advanced benzoxazine resins with low curing temperature, great thermal properties, and superior fire safety.
Publisher: Springer Science and Business Media LLC
Date: 18-06-2019
Publisher: Springer Science and Business Media LLC
Date: 18-11-2018
Publisher: Springer Science and Business Media LLC
Date: 03-03-2018
Publisher: Springer Science and Business Media LLC
Date: 13-07-2018
Publisher: Wiley
Date: 27-01-2016
DOI: 10.1002/APP.43403
Publisher: American Chemical Society (ACS)
Date: 18-05-2023
Publisher: Elsevier BV
Date: 10-2019
DOI: 10.1016/J.JCIS.2019.06.055
Abstract: The rGO-wrapped nanocomposites can be regarded as promising candidates for the development of advanced microwave absorbing materials. In this work, hierarchical rGO-wrapped CNFs were prepared via a two-step strategy, including a classical modified Hummers method and a green reduction reaction. Accompany with the chemical treatments, graphene oxide appears on the outer walls of carbon nanofibers. By modulating the addition amount of ascorbic acid, the outer graphene oxide can be controllably reduced. Moreover, the CNFs/rGO with proper reduction degree exhibits desirable microwave absorption performance, whose minimum RL and effective bandwidth are -38.1 dB (3.85 GHz, d = 5.0 mm) and 4.1 GHz (5.08-9.18 GHz, d = 3.5 mm). The superior microwave attenuation performance is attributed to the synergistic effects between the CNFs and rGO. While the nanofibers provide the obtained s le with an extremely long conductive network, rGO introduces a moderate amount of lattice defects and functional groups, resulting in desirable conductivity loss and multiple polarizations. The existence of rGO also endows CNFs/rGO with suitable dielectric values so that the absorber achieves well impedance matching. Considering the excellent microwave absorption performance, this research provides a new facile route to fabricate rGO-wrapped carbonaceous materials with proper oxygen-containing groups for MAMs.
Publisher: American Chemical Society (ACS)
Date: 28-09-2021
Publisher: Wiley
Date: 31-08-2018
DOI: 10.1002/PAT.4145
Publisher: Elsevier BV
Date: 12-2023
Publisher: Springer Science and Business Media LLC
Date: 06-01-2023
Publisher: Elsevier BV
Date: 04-2022
Publisher: Elsevier BV
Date: 05-2015
Publisher: Springer Science and Business Media LLC
Date: 08-06-2020
Publisher: American Chemical Society (ACS)
Date: 13-07-2020
Publisher: Elsevier BV
Date: 04-2018
Publisher: Springer Science and Business Media LLC
Date: 08-08-2019
Publisher: Elsevier BV
Date: 10-2020
Publisher: Elsevier BV
Date: 11-2022
Publisher: Elsevier BV
Date: 12-2017
Publisher: Elsevier BV
Date: 10-2023
Publisher: Elsevier BV
Date: 11-2019
Publisher: Wiley
Date: 24-10-2020
DOI: 10.1002/APP.50177
Publisher: Elsevier BV
Date: 10-2022
Publisher: Elsevier BV
Date: 09-2022
Publisher: Elsevier BV
Date: 07-2023
Publisher: Elsevier BV
Date: 03-2021
Publisher: Elsevier BV
Date: 2023
Publisher: Elsevier BV
Date: 10-2022
Publisher: Elsevier BV
Date: 10-2021
Publisher: Elsevier BV
Date: 09-2015
Publisher: Elsevier BV
Date: 02-2021
Publisher: Elsevier BV
Date: 06-2020
Publisher: Elsevier BV
Date: 04-2016
Publisher: Elsevier BV
Date: 04-2023
Publisher: Elsevier BV
Date: 07-2020
Publisher: MDPI AG
Date: 23-10-2021
Abstract: Hexaphenoxycyclotriphosphazene (HPCP) is a common flame retardant for epoxy resin (EP). To improve the thermostability and fire safety of HPCP-containing EP, we combined UiO66-NH2 (a kind of metal-organic frame, MOF) with halloysite nanotubes (HNTs) by hydrothermal reaction to create a novel synergistic flame retardant (H-U) of HPCP for EP. For the EP containing HPCP and H-U, the initial decomposition temperature (T5%) and the temperature of maximum decomposition rate (Tmax) increased by 11 and 17 °C under nitrogen atmosphere compared with those of the EP containing only HPCP. Meanwhile, the EP containing HPCP and H-U exhibited better tensile and flexural properties due to the addition of rigid nanoparticles. Notably, the EP containing HPCP and H-U reached a V-0 rating in UL-94 test and a limited oxygen index (LOI) of 35.2%. However, with the introduction of H-U, the flame retardant performances of EP composites were weakened in the cone calorimeter test, which was probably due to the decreased height of intumescent residual char.
Publisher: Elsevier BV
Date: 11-2015
Publisher: Elsevier BV
Date: 07-2020
Publisher: Elsevier BV
Date: 12-2023
Publisher: Elsevier BV
Date: 12-2021
Publisher: Elsevier BV
Date: 2020
Publisher: Elsevier BV
Date: 2019
Location: Australia
Start Date: 2021
End Date: 2022
Funder: China Postdoctoral Science Foundation
View Funded ActivityStart Date: 2019
End Date: 2020
Funder: China Postdoctoral Science Foundation
View Funded ActivityStart Date: 2023
End Date: 12-2025
Amount: $421,574.00
Funder: Australian Research Council
View Funded Activity