Flame Retardancy, Thermal and Mechanical Properties of Novel Intumescent Flame Retardant/MXene/Poly(Vinyl Alcohol) Nanocomposites

Yan, Xiaofei; Fang, Jie; Gu, Jianjun; Zhu, Chenkai; Qi, Dongming

doi:10.3390/nano12030477

Cited by 26 publications

(14 citation statements)

References 36 publications

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“…For G/PAM DN gel, two clear pyrolysis stages also appear in the temperature range of 150~250 °C and 250~450 °C, respectively. Additionally, the peak of M 3 /G/PAM NDN hydrogels at 160~170 °C originates from the weight loss of the water attached and bound by the gel [ 31 ]. In addition, the M 3 /G/PAM NDN gel exhibits a lower thermal weight loss rate of 79%.…”

Section: Resultsmentioning

confidence: 99%

MXene/Gelatin/Polyacrylamide Nanocomposite Double Network Hydrogel with Improved Mechanical and Photothermal Properties

Zhang

et al. 2022

Polymers

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The development of smart hydrogel with excellent mechanical properties and photothermal conversion capability is helpful in expending its application fields. Herein, a MXene/gelatin/polyacrylamide (M/G/PAM) nanocomposite double network (NDN) hydrogel was synthesized by γ-ray radiation technology for the first time. Compared with gelatin/polyacrylamide double network hydrogel, the optimized resultant M3/G/PAM NDN hydrogel shows better mechanical properties (tensile strength of 634 ± 10 kPa, compressive strength of 3.44 ± 0.12 MPa at a compression ratio of 90%). The M3/G/PAM NDN hydrogel exhibits a faster heating rate of 30 °C min−1, stable photothermal ability, and mechanical properties even after 20 cycles of on–off 808 nm near-infrared (NIR) laser irradiation (1.0 W cm−2). Furthermore, the temperature of M3/G/PAM NDN hydrogel can be increased rapidly from 25 °C to 90 °C in 10 s and could reach 145 °C in 120 s under irradiation by focused NIR laser irradiation (56.6 W cm−2). The high mechanical property and photothermal properties of M/G/PAM hydrogel are ascribed to the formation of double network and uniform hydrogen bonding between MXene and gelatin and PAM polymers. This work paves the way for construction of photothermal hydrogels with excellent mechanical properties.

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Section: Resultsmentioning

confidence: 99%

MXene/Gelatin/Polyacrylamide Nanocomposite Double Network Hydrogel with Improved Mechanical and Photothermal Properties

Zhang

et al. 2022

Polymers

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“…The excellent fire retardancy can help sensors keep a structural integrity during a flame attack and thus provide reliable fire warning signals. [3] On top of that, the MFNC coating [10,15,57,59,62,[85][86][87][88][89][90][91] www.afm-journal.de www.advancedsciencenews.com…”

Section: Mxene and Its Derivatives For Smart Fire-warningmentioning

confidence: 99%

“…reported an fire‐proof PVA composites by using poly(vinylphosphonic acid) (PVPA), polyethylenepolyamine (PEPA), and MXene. [ 91 ] Compared to those of untreated PVA, the addition of 10.0 wt.% PVPA and 5.0 wt.% PEPA results in a 3.2% decrease in tensile strength and a 18.2% decrease in break strain.…”

Section: Mxene and Its Derivatives For Fire Retardancymentioning

confidence: 99%

“…4 compares the contribution of MXene-, GO-and BPbased fire retardants to flame retardancy and mechanical properties of TPU. [10,15,57,59,62,[85][86][87][88][89][90][91] Overall, MXene derivatives present comparable performances with GO and BPbased counterparts in terms of both the PHRR reduction and the increase in tensile strength (σ t ). As shown in Figure 16a, 2.0 wt.% Zr-MXene enables TPU to show a PHRR reduction up to 63%.…”

Section: Synergistic Effects Between Mxene and Other Flame Retardantsmentioning

confidence: 99%

“…Comparisons of flame-retardant performances. Comparisons of MXene, graphene oxide, and black phosphorus nanofillers in terms of the PHRR reduction of a) TPU and b) EP composites as a function of nanofiller concentration by weight [10,15,57,59,62,[85][86][87][88][89][90][91].…”

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confidence: 99%

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2D MXenes for Fire Retardancy and Fire‐Warning Applications: Promises and Prospects

Liu

Feng

Xue

et al. 2022

Adv Funct Materials

116

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Frequent fire disasters have caused massive impacts to the environment, human beings, and the economy. MXene has recently been intensively researched as potential flame retardants to provide passive fire protection for other materials via its physical barrier and catalyzing carbonization effects. In parallel, MXene has also demonstrated a great promise for creating early fire warning sensors, which is an emerging field that has the potential to provide active fire response through its thermoelectric effect. This makes it possible to integrate passive fire retardancy and active fire warning into one MXene‐based fire protection system on demand. However, fulfilling these promises needs more research. Herein, an overview of passive flame‐retardant materials and next‐generation smart fire warning materials/sensors based on MXene and its derivatives is provided. This study reviews their conceptual design, characterization, modification principles, performances, applications, and mechanisms. A discussion of the challenges that need to be solved for their future practical applications and opportunities is also presented.

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Cross Network Composite Aerogel Towards Robust and Fire‐Resist Thermal Insulation Material

Wang

Yang

2023

Adv Eng Mater

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Thermal insulation materials with excellent fire safety and mechanical performances are urgently desired. Herein, novel cross network composite aerogels (CNCAs) are designed with cationic amylopectin and polyvinyl alcohol that act as the macromolecular framework and montmorillonite and borax that act as the functional binders. The CNCAs demonstrate low density (0.033–0.043 g cm−3), high strength (5.1–18.4 MPa), and anisotropic thermal conductivity. Furthermore, they exhibit high fire safety (limiting oxygen index > 50, UL‐94 V‐0 rating, and negligible heat and smoke release under cone calorimetry testing condition). Particularly, the after‐fire residue can still have an excellent load capacity with a compression modulus of 3.7 MPa. Based on the energy‐dispersive X‐ray spectroscopy results, up to avg. 91.3% of the carbon from the organic polymers remains in the residue. These characteristics not only ensure the safe use of the CNCAs but also expand their application fields and improve their durability.

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Flame Retardancy, Thermal and Mechanical Properties of Novel Intumescent Flame Retardant/MXene/Poly(Vinyl Alcohol) Nanocomposites

Cited by 26 publications

References 36 publications

MXene/Gelatin/Polyacrylamide Nanocomposite Double Network Hydrogel with Improved Mechanical and Photothermal Properties

MXene/Gelatin/Polyacrylamide Nanocomposite Double Network Hydrogel with Improved Mechanical and Photothermal Properties

2D MXenes for Fire Retardancy and Fire‐Warning Applications: Promises and Prospects

Cross Network Composite Aerogel Towards Robust and Fire‐Resist Thermal Insulation Material

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