Natural antioxidant functionalization for fabricating ambient-stable black phosphorus nanosheets toward enhancing flame retardancy and toxic gases suppression of polyurethane

Cai, Wei; Cai, Tongmin; He, Lingxin; Chu, Fukai; Mu, Xiaowei; Han, Longfei; Hu, Yuan; Wang, Bibo; Hu, Weizhao

doi:10.1016/j.jhazmat.2019.121971

Cited by 121 publications

(46 citation statements)

References 54 publications

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“…The WA particle barrier first suppresses heat delivery and inflammable pyrolysis products between PU polymer matrix and fire, thus weakening the combustion reaction. Less combust consumption of pyrolysis products indicated lower AVHR, CO2, and CO [55]. Additionally, the results LOI are presented in Figure 4.…”

Section: Flame Retardancy Of Pu and Wapu Foamsmentioning

confidence: 84%

Fire Suppression and Thermal Behavior of Biobased Rigid Polyurethane Foam Filled with Biomass Incineration Waste Ash

et al. 2020

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Currently, there is great demand to implement circular economy principles and motivate producers of building materials to integrate into a closed loop supply chain system and improve sustainability of their end-product. Therefore, it is of great interest to replace conventional raw materials with inorganic or organic waste-based and filler-type additives to promote sustainability and the close loop chain. This article investigates the possibility of bottom waste incineration ash (WA) particles to be used as a flame retardant replacement to increase fire safety and thermal stability under higher temperatures. From 10 wt.% to 50 wt.% WA particles do not significantly deteriorate performance characteristics, such as compressive strength, thermal conductivity, and water absorption after 28 days of immersion, and at 32 • C WA particles improve the thermal stability of resultant PU foams. Furthermore, 50 wt.% WA particles reduce average heat release by 69% and CO 2 and CO yields during fire by 76% and 77%, respectively. Unfortunately, WA particles do not act as a smoke suppressant and do not reduce smoke release rate.

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Section: Flame Retardancy Of Pu and Wapu Foamsmentioning

confidence: 84%

Fire Suppression and Thermal Behavior of Biobased Rigid Polyurethane Foam Filled with Biomass Incineration Waste Ash

et al. 2020

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“…[ 31,33 ] In accordance with previous reports, TA produces a certain amount of radical during thermal pyrolysis and reacts with carbon radicals to promote the formation of solid products and scavenge the oxygen containing free radicals. [ 36,37 ] Thus, the SPR and TSR of EP/ β ‐FeOOH@PTNi composites increased. When the addition amount of β ‐FeOOH@PTNi reached 5 wt%, the inhibitory effect of β ‐FeOOH on free radicals strengthened and limited the generation of free radicals from TA, thereby reducing the SPR and TSP values.…”

Section: Resultsmentioning

confidence: 99%

Bioderived Bilayer Shell Modification β‐FeOOH Nanorods via Self‐Assembly Technique as Sustainable Flame Retardants for Enhancing Flame Retardancy of Epoxy Resin

Sui¹,

Dai²,

Li³

et al. 2021

Macro Materials & Eng

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The design and application of bioderived flame retardants have been widely conducted to meet the concept of green and sustainable development. Here, self-assembly technique is used to prepare core-shell bioderived additives by using -FeOOH as the core and polydopamine (PDA)/tannic acid (TA) bilayer as the shell, following adsorption of nickel ions to enhance the thermal stability, flame retardancy, and mechanical properties of epoxy resin (EP). The molecular structure of biobased resources is rich in hydroxyl groups and carbon content, which can be dehydrated and carbonized during combustion and promote the formation of robust protective char layer. With the addition of 5 wt% -FeOOH@PTNi, the EP composites can pass V-0 rating in the UL-94 test. The peak heat release rate and total heat release decrease by 28.4% and 17.4% compared with pure EP. The bioderived nanorods can capture the oxygen free radicals, contributing to flame retarding in gaseous phase. Thus, the release of high-toxic CO and flammable gaseous is significantly suppressed. Besides, the storage modulus of EP composites increases by 16.0% with the addition of 5% -FeOOH@PTNi compared with pure EP. This work provides a sustainable methodology for the design of bioderived flame retardants for EP.

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“…This can be explained by a proposed pyrolysis process that the weight loss at lower temperature was mostly attributed to carbonization of polymer chains which forms char residues. Cone calorimeter is an effective measurement of combustion property for most materials [32,33], including textiles [34]. Combustion property of cotton and ramie fabrics was measured by a cone calorimeter ( Figure 5).…”

Section: Thermal Conductivitymentioning

confidence: 99%

“…Cone calorimeter is an effective measurement of combustion property for most materials [32,33], including textiles [34]. Combustion property of cotton and ramie fabrics was measured by a cone calorimeter ( Figure 5).…”

Section: Thermal Stability and Combustion Propertiesmentioning

confidence: 99%

Comprehensive Property Investigation of Mold Inhibitor Treated Raw Cotton and Ramie Fabric

et al. 2020

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At present, research rarely focuses on side effects of the use of mold inhibitors on raw cotton and ramie fabric. Four different mold inhibitors (dimethyl fumarate (DMF), ethyl p-hydroxybenzoate (EHB), propyl p-hydroxybenzoate (PHB), and calcium sorbate (CS)) were used to treat raw cotton and ramie fabric through a dipping method. The optical properties, wettability, thermal conductivity, thermal stability, and combustion properties of treated cotton and ramie samples have been investigated. The reflectance of UV light was improved by the addition of mold inhibitors. In addition, the presence of EHB, PHB, and CS improved the wettability of raw cotton and ramie fabric. It was found that thermal conductivity was slightly increased, influencing the heat insulation effect of the fabrics. Since the additives are flammable, the presence of DMF, EHB, and PHB caused an increase in pHRR and THR for combustion of cotton samples. This addition of CS caused a decrease in pHRR and THR of cotton due to the flame retardancy of CS. This comprehensive investigation of the properties of raw cotton and ramie fabrics treated with these materials should provide a basis for the choice of mold inhibitors.

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Natural antioxidant functionalization for fabricating ambient-stable black phosphorus nanosheets toward enhancing flame retardancy and toxic gases suppression of polyurethane

Cited by 121 publications

References 54 publications

Fire Suppression and Thermal Behavior of Biobased Rigid Polyurethane Foam Filled with Biomass Incineration Waste Ash

Fire Suppression and Thermal Behavior of Biobased Rigid Polyurethane Foam Filled with Biomass Incineration Waste Ash

Bioderived Bilayer Shell Modification β‐FeOOH Nanorods via Self‐Assembly Technique as Sustainable Flame Retardants for Enhancing Flame Retardancy of Epoxy Resin

Comprehensive Property Investigation of Mold Inhibitor Treated Raw Cotton and Ramie Fabric

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