Eco-friendly flame retardant and electromagnetic interference shielding cotton fabrics with multi-layered coatings

Zhang, Yan; Tian, Wenxiang; Liu, Longxiang; Cheng, Wenhua; Wang, Wei; Liew, K.M.; Wang, Bibo; Hu, Yuan

doi:10.1016/j.cej.2019.05.012

Cited by 283 publications

(100 citation statements)

References 51 publications

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“…It is likely that HSFR can be degraded to PO and PO 2 ·by heating, which absorbs other flammable free radicals such H· and HO, and hinders the degradation of polyether polyols and play a role of flame retardant during the gas phase. The result is consistent with the conclusion of other researches 29,61,66 …”

Section: Resultssupporting

confidence: 93%

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Preparation and mechanism study of intrinsic hard segment flame‐retardant polyurethane foam

Luo

Miao

Sun

et al. 2020

J of Applied Polymer Sci

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The hard segment of polyurethane foam (PUF) plays a special role in degradation and carbonization. In this work, flame-retardant hard segment (HSFR) used to promote fire resistance was synthesized successfully. The limiting oxygen index (LOI), vertical combustion, and micro-combustion calorimetry tests indicated the flame retardancy of the foam was elevated by introducing HSFR. When HSFR with an addition of 60 phr, the LOI value was increased from 17.0 to 25.5%, UL-94 reached V-0 rating, the peak heat release rate (p-HRR) and total heat release (THR) decreased by 63.9% and 10.0%, respectively. In addition, the compressive strength of HSFR-60 increased by five times. Further, the flame-retardant mechanism of HSFR was proposed. In vapor phase, HSFR could generate PO and PO 2 , which combine with flammable free radical and hinder segment decomposition. In condensed phase, HSFR could promote the dehydration and carbonization of chain and the formation of dense and graphitized char. This article provides a practical method for the preparation of green, highly effective, and durable flame-retardant PUF.

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Section: Resultssupporting

confidence: 93%

“…As a protective barrier, char has great significance in preventing matrix degradation and inhibiting combustible gas and heat transfer. The morphology and structure of char are used to appraise flame retardant performance of materials 17,61,62 . The images of char are given in Figure 14.…”

Section: Resultsmentioning

confidence: 99%

Preparation and mechanism study of intrinsic hard segment flame‐retardant polyurethane foam

Luo

Miao

Sun

et al. 2020

J of Applied Polymer Sci

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“…Another recent work investigated the multifunctional character provided by phytic acid/polyethylenimine assemblies in the presence of silver nanowires; the latter were selected for obtaining electrically conductive networks on the surface of cotton [91]. In particular, the presence of 7.5 wt.% of silver nanowires embedded in an assembly made of eight bilayers not only provided self-extinguishing features to the cellulosic substrate, but also conferred high electrical conductivity (about 2415 S/m) and electromagnetic interference shielding effectiveness (about 33 dB).…”

Section: Hybrid Organic-inorganic Lbl Assemblies On Cottonmentioning

confidence: 99%

Sol-Gel and Layer-by-Layer Coatings for Flame-Retardant Cotton Fabrics: Recent Advances

Malucelli

2020

Coatings

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Surface-engineered coatings for the fire protection of cotton are being increasing used thanks to the ease of application of the coatings and their effectiveness in preventing flame propagation and improving resistance to irradiative heat flux exposure. Two main approaches have been extensively investigated, namely sol-gel derived coatings and layer-by-layer assemblies. These approaches are both capable of providing treated fabrics with outstanding flame-retardant features. Notwithstanding, according to the composition of the sol-gel recipes and the type of deposited layers, it is possible to design multifunctional (for example hydrophobic and electrically conductive) treatments. This review aims at discussing recent advances with respect to both strategies, highlighting current limitations, open challenges, and possible advances.

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“…Even worse, the inherent brittleness for indium and tin greatly limits their usefulness . To overcome these obstacles, many alternative materials have been chosen to reduce the cost of manufacturing electrothermal films and improve their flexibility, such as graphene, carbon nanotubes (CNT), and AgNW . Graphene, CNT, and CCB are three typical carbon family materials, which are not only easy to prepare but also rich in raw materials.…”

Section: Introductionmentioning

confidence: 99%

Rapid electrothermal response and excellent flame retardancy of ethylene‐vinyl acetate electrothermal film

Tian

Zhang

et al. 2020

Polymers for Advanced Techs

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In this study, high electrical conductivity and flame retardant electrothermal ethylene-vinyl acetate (EVA) films were fabricated by using carbon nanotubeswrapped ammonium polyphosphate (CAPP) and conductive carbon black (CCB).CAPP was used as a synergistic conductive filler and flame retardant to improve the electrical conductivity and fire safety of the electrothermal film at the same time. Besides, the heat release rate (HRR) and the total heat release (THR) of EVA-5 decreased about 81.5% and 57.3% compared with those of pure EVA film, respectively. Moreover, by incorporating a small amount of CAPP, EVA-5 can reach up to V-0 rating with an limiting oxygen index (LOI) value of 31%. EVA film fabricated by CCB and CAPP as conductive material exhibited almost 10 times increment on electrical conductivity than that of same content for CCB alone.And time vs temperature profiles of EVA-5 showed a stable trend over 3600 seconds without any offset at a given applied voltage of 15 V. Moreover, its excellent cycle heating performance indicated that the electrothermal film can be recycled, which meets the requirements of sustainable development. In a word, this novel strategy provides a simple and effective way to obtain a high conductive and fire safety electrothermal film. K E Y W O R D S ammonium polyphosphate, carbon nanotubes, conductive carbon black, electrothermal film, flame retardant

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Eco-friendly flame retardant and electromagnetic interference shielding cotton fabrics with multi-layered coatings

Cited by 283 publications

References 51 publications

Preparation and mechanism study of intrinsic hard segment flame‐retardant polyurethane foam

Preparation and mechanism study of intrinsic hard segment flame‐retardant polyurethane foam

Sol-Gel and Layer-by-Layer Coatings for Flame-Retardant Cotton Fabrics: Recent Advances

Rapid electrothermal response and excellent flame retardancy of ethylene‐vinyl acetate electrothermal film

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