Reversible thermochromic POSS-Metal Films for early warning

Xu, Yaoyuan; Huang, Lingyun; Long, Jun; Zhang, Runze; Zhong, Zhengxiang; Yang, Ling; Liu, Li; Huang, Yudong

doi:10.1016/j.compscitech.2021.109083

Cited by 21 publications

(7 citation statements)

References 31 publications

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“…With the increase in these characteristic modes, the algorithm can change from a 0 to 1 status to display a warning signal. A kind of reversible thermochromic POSS (polyhedral oligomeric silsesquioxane)-metal films (PMFs) with variable ratio of POSS and metal salt Cr(NO 3 ) 3 •9H 2 O has been developed recently [93] (Fig. 9c).…”

Section: Thermochromic-based Fire Alarmsmentioning

confidence: 99%

Recent Advances on Early-Stage Fire-Warning Systems: Mechanism, Performance, and Perspective

Vázquez-López

Saeza

et al. 2022

Nano-Micro Lett.

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Early-stage fire-warning systems (EFWSs) have attracted significant attention owing to their superiority in detecting fire situations occurring in the pre-combustion process. Substantial progress on EFWSs has been achieved recently, and they have presented a considerable possibility for more evacuation time to control constant unintentional fire hazards in our daily life. This review mainly makes a comprehensive summary of the current EFWSs, including the working mechanisms and their performance. According to the different working mechanisms, fire alarms can be classified into graphene oxide-based fire alarms, semiconductor-based fire alarms, thermoelectric-based fire alarms, and fire alarms on other working mechanisms. Finally, the challenge and prospect for EFWSs are briefly provided by comparing the art of state of fire alarms. This work can propose a more comprehensive understanding of EFWSs and a guideline for the cutting-edge development direction of EFWSs for readers.

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Section: Thermochromic-based Fire Alarmsmentioning

confidence: 99%

Recent Advances on Early-Stage Fire-Warning Systems: Mechanism, Performance, and Perspective

Vázquez-López

Saeza

et al. 2022

Nano-Micro Lett.

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“…The research demonstrated that the early fire could be rapidly detected using this molecular sensor with the help of the video monitoring technology. Although breakthroughs have been made, the reported color change-based fire warning sensors still showed high response temperatures (80 and 250 °C). , Moreover, the thermochromic molecules suffer from poor flame retardancy, making it hard for fire warning sensors to survive in the flame.…”

Section: Introductionmentioning

confidence: 99%

“…2−4 The fire warning mechanism of GO is based on the resistance change under a high-temperature environment due to the removal of the oxygen-containing groups from the surfaces of GO. Since then, various smart fire warning sensors have been extensively reported beyond GO, 5−8 including those based on resistance change, 9−20 voltage change, 21−24 color change, 25,26 and shape change. 27−31 In addition, the concept of smart fire warning sensors has been extended to the fields of batteries, 32−34 supercapacitors, 35 nanogenerators, 36,37 and flexible electronics.…”

Section: Introductionmentioning

confidence: 99%

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Graphene Oxide and Hydroxyapatite Nanowire-Based Asymmetric Nanocomposite Papers with Heat-Induced Color and Resistance Switching for Dual-Mode Early Fire Warning

He,

Xu,

Chen

et al. 2023

ACS Appl. Nano Mater.

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“…Recently, diverse emerging FAS systems were developed and reported based on different alarming mechanisms, e . g ., resistance transition, − thermal-electric conversion, − shape/phase change, , and color-change. , For instance, Tang’s group creatively designed and achieved a smart early fire alarm sensor on combustible substrates via using a multilayered graphene oxide (GO)/silicone coating . Due to the thermal reduction mechanism, once encountering the flame, the GO network can transform into rGO network and thus form a conductive path for the alarming circuit within ∼3 s. Meanwhile, the silicon resin can transform into a nanosilica protective layer to restrict the thermal decomposition of the rGO network.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic, Mechanically Strong Supramolecular Nanosystem Enabling Solvent Resistance, Reliable Fire Protection and Ultralong Fire Warning

et al. 2022

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A graphene oxide (GO)-based smart fire alarm sensor (FAS) has gained rapidly increasing research interest in fire safety fields recently. However, it still remains a huge challenge to obtain desirable GO-based FAS materials with integrated performances of mechanical flexibility/robustness, harsh environment-tolerance, high-temperature resistance, and reliable fire warning and protection. In this work, based on bionic design, the supermolecule melamine diborate (M·2B) was combined with GO nanosheets to form supramolecular cross-linking nanosystems, and the corresponding GO-M·2B (GO/MB) hybrid papers with a nacre-like micro/nano structure were successfully fabricated via a gel-dry method. The optimized GO/MB paper exhibits enhanced mechanical properties, e.g., tensile strength and toughness up to ∼122 MPa and ∼1.72 MJ/m3, respectively, which is ∼3.5 and ∼6.6 times higher than those of the GO paper. Besides, it also shows excellent structural stability even under acid/alkaline solution immersion and water bath ultrasonication conditions. Furthermore, due to the presence of promoting reduction effect and atom doping reactions in GO network, the resulting GO/MB network displays exceptional high-temperature resistance, sensitive fire alarm response (∼0.72 s), and ultralong alarming time (>1200 s), showing promising fire safety and protection application prospects as desirable FAS and fire shielding material with excellent comprehensive performances. Therefore, this work provides inspiration for the design and fabrication of high-performance GO-based smart materials that combine fire shielding and alarm functions.

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Reversible thermochromic POSS-Metal Films for early warning

Cited by 21 publications

References 31 publications

Recent Advances on Early-Stage Fire-Warning Systems: Mechanism, Performance, and Perspective

Recent Advances on Early-Stage Fire-Warning Systems: Mechanism, Performance, and Perspective

Graphene Oxide and Hydroxyapatite Nanowire-Based Asymmetric Nanocomposite Papers with Heat-Induced Color and Resistance Switching for Dual-Mode Early Fire Warning

Biomimetic, Mechanically Strong Supramolecular Nanosystem Enabling Solvent Resistance, Reliable Fire Protection and Ultralong Fire Warning

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