Synergistic effect of organophosphate functionalized montmorillonite on properties and water resistance of intumescent flame‐retarded SEBS

Li, Jun; Li, Xiaoyan; Qian, Wei; Yang, Jian; Qiu, Biwei; Xu, Jianjun; Wang, Xia

doi:10.1002/fam.2670

Cited by 16 publications

(6 citation statements)

References 47 publications

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“…Considering almost unlimited number of potential organic cations, modification of clays may result in a very wide range of materials with various structural properties. From the flame-retardancy point of view, multiple organics may be applied to modify clays, e.g., alkylamine salts [123,124], phosphates [125,126], organic acids [127], chitosan derivatives [128], or other more complex compounds like 2-(2-(5,5-dimethyl-1,3,2-dioxaphosphinyl-2-ylamino)ethy-amino)-N,N,Ntriethyl-2-oxoethanaminium chloride [129]. Such modifications enable introduction of nitrogen-and phosphorus-rich compounds onto the surface of clay particles, which, as mentioned above, is very beneficial for the flame-retardancy effects.…”

Section: Claysmentioning

confidence: 99%

Clays as Inhibitors of Polyurethane Foams’ Flammability

Hejna

2021

Materials

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Polyurethanes are a very important group of polymers with an extensive range of applications in different branches of industry. In the form of foams, they are mainly used in bedding, furniture, building, construction, and automotive sectors. Due to human safety reasons, these applications require an appropriate level of flame retardance, often required by various law regulations. Nevertheless, without the proper modifications, polyurethane foams are easily ignitable, highly flammable, and generate an enormous amount of smoke during combustion. Therefore, proper modifications or additives should be introduced to reduce their flammability. Except for the most popular phosphorus-, halogen-, or nitrogen-containing flame retardants, promising results were noted for the application of clays. Due to their small particle size and flake-like shape, they induce a “labyrinth effect” inside the foam, resulting in the delay of decomposition onset, reduction of smoke generation, and inhibition of heat, gas, and mass transfer. Moreover, clays can be easily modified with different organic compounds or used along with conventional flame retardants. Such an approach may often result in the synergy effect, which provides the exceptional reduction of foams’ flammability. This paper summarizes the literature reports related to the applications of clays in the reduction of polyurethane foams’ flammability, either by their incorporation as a nanofiller or by preparation of coatings.

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Section: Claysmentioning

confidence: 99%

Clays as Inhibitors of Polyurethane Foams’ Flammability

Hejna

2021

Materials

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“…ere are various methods that have been used to realize flame-retardant polymer/montmorillonite nanocomposites, including intercalation, synergy, organic modification, hybridization, layer-by-layer assembly, and self-assembly [134][135][136][137][138][139][140][141][142][143][144][145][146][147][148][149][150][151][152]. Inspired by nacre, Xie et al [151] developed a super-efficient fire-safe nanocoating based on carboxymethyl chitosan and modified MMT via one-step self-assembly.…”

Section: Silicon-containing Compoundsmentioning

confidence: 99%

Nanoreinforcements of Two-Dimensional Nanomaterials for Flame Retardant Polymeric Composites: An Overview

Hong

Chen

2019

Advances in Polymer Technology

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Polymer materials are ubiquitous in daily life. While polymers are often convenient and helpful, their properties often obscure the fire hazards they may pose. Therefore, it is of great significance in terms of safety to study the flame retardant properties of polymers while still maintaining their optimal performance. Current literature shows that although traditional flame retardants can satisfy the requirements of polymer flame retardancy, due to increases in product requirements in industry, including requirements for durability, mechanical properties, and environmental friendliness, it is imperative to develop a new generation of flame retardants. In recent years, the preparation of modified two-dimensional nanomaterials as flame retardants has attracted wide attention in the field. Due to their unique layered structures, two-dimensional nanomaterials can generally improve the mechanical properties of polymers via uniform dispersion, and they can form effective physical barriers in a matrix to improve the thermal stability of polymers. For polymer applications in specialized fields, different two-dimensional nanomaterials have potential conductivity, high thermal conductivity, catalytic activity, and antiultraviolet abilities, which can meet the flame retardant requirements of polymers and allow their use in specific applications. In this review, the current research status of two-dimensional nanomaterials as flame retardants is discussed, as well as a mechanism of how they can be applied for reducing the flammability of polymers.

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“…It has the elasticity of rubber at room temperature and plasticity at high temperatures . Moreover, it can be produced by injection molding, extrusion molding, blow molding, and other processing methods. , Due to their excellent aging resistance, insulativity, and mechanical properties, polystyrene-based thermoplastic elastomers (TPE-S) composed of poly(styrene-ethylene-butylene-styrene) (SEBS), white oil, and polypropylene (PP) are widely used in electric wire and cable, construction, and automobile industries. − However, because of their high flammability, the applications of TPE-S in other industries are greatly limited. Therefore, it is particularly urgent to improve the flame retardancy of the TPE-S.…”

Section: Introductionmentioning

confidence: 99%

“…Since halogen flame retardants have been restricted due to environmental problems, , various halogen-free flame retardants such as metal hydroxides, inorganic phosphorus, organic phosphorus, and silicon have been applied to prepare the flame-retardant TPE-S. − However, these flame retardants showed poor effects when used alone, and they are generally combined with other flame retardants. − Xiao et al investigated the individual and combined flame-retardant effects of magnesium hydroxide (MH) and aluminum hydroxide (ATH) on the TPE-S. The results showed that the flame-retardant efficiency of MH and ATH combined was superior to that of used alone.…”

Section: Introductionmentioning

confidence: 99%

High-Performance TPE-S Modified by a Flame-Retardant System Based on Black Phosphorus Nanosheets

Wu²,

Wei

et al. 2022

ACS Omega

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Few-layer black phosphorus nanosheets (BPs) combined with melamine cyanurate and poly(phenylene oxide) were used to prepare a flame-retardant thermoplastic elastomer based on polystyrene (TPE-S) for the first time. Compared with neat TPE-S, BP-modified TPE-S with a phosphorus content of 7.98% (TPE-S/BP-7.98) passed the UL-94 vertical burning V-0 rating, and the limiting oxygen index value increased to 24.0%. The peak heat release rate (PHRR), total heat release, and the average combustion effective heat of TPE-S/BP-7.98 were decreased by 61.8, 26.0, and 35.3%, respectively. The time to PHRR was increased from 90 s (neat TPE-S) to 170 s. Scanning electron microscopy of frozen fracture sections showed favorable compatibility and dispersibility of BPs in TPE-S. In addition, the introduction of BPs showed the most negligible effect on the mechanical properties of TPE-S compared with other flame retardants (aluminum hypophosphite and red phosphorus).

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Synergistic effect of organophosphate functionalized montmorillonite on properties and water resistance of intumescent flame‐retarded SEBS

Cited by 16 publications

References 47 publications

Clays as Inhibitors of Polyurethane Foams’ Flammability

Clays as Inhibitors of Polyurethane Foams’ Flammability

Nanoreinforcements of Two-Dimensional Nanomaterials for Flame Retardant Polymeric Composites: An Overview

High-Performance TPE-S Modified by a Flame-Retardant System Based on Black Phosphorus Nanosheets

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