Superior flame retardancy and smoke suppression of epoxy resins with zinc ferrite@polyphosphazene nanocomposites

Sun, Xueming; Li, Zhiwei; Das, Oisik; Hedenqvist, Mikael S.

doi:10.1016/j.compositesa.2022.107417

Cited by 25 publications

(8 citation statements)

References 54 publications

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“…Overall, the EP/1.0G@SiO 2 @FeHP nanocomposite shows more significant PHRR decrease than previously reported EP nanocomposites that reach a UL-94 V-0 rating (Figure 3h and Table 3). [2][3][4][5][6][9][10][11]13,31,[48][49][50][51][52][53][54][55][56] Moreover, our G@SiO 2 @FeHP shows higher efficiency than previous nanofillers, such as TPP-PF 6 , DIT, ZF@PZS, CQ-DOPO and ETP, [2,3,5,10,54] which usually need higher additions (2.0-3.8 wt%) to impart a UL-94 V-0 classification to EP. For other fire-retardant additives, such as FDI, DOPONH 2 -S, N-DOPO, DCSA-Cu, PBMA-APP and TBD, [9,13,31,48,50,51] they fail to effectively suppress the heat release of the EP matrix in addition to high additions (5.0-7.3 wt%).…”

Section: Synthesis and Characterization Of G@sio 2 @Fehpmentioning

confidence: 99%

Heterostructured Graphene@Silica@Iron Phenylphosphinate for Fire‐Retardant, Strong, Thermally Conductive Yet Electrically Insulated Epoxy Nanocomposites

Chen,

Huo,

et al. 2024

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The portfolio of extraordinary fire retardancy, mechanical properties, dielectric/electric insulating performances, and thermal conductivity (λ) is essential for the practical applications of epoxy resin (EP) in high‐end industries. To date, it remains a great challenge to achieve such a performanceportfolio in EP due to their different and even mutually exclusive governing mechanisms. Herein, a multifunctional additive (G@SiO2@FeHP) is fabricated by in situ immobilization of silica (SiO2) and iron phenylphosphinate (FeHP) onto the graphene (G) surface. Benefiting from the synergistic effect of G, SiO2 and FeHP, the addition of 1.0 wt% G@SiO2@FeHP enables EP to achieve a vertical burning (UL‐94) V‐0 rating and a limiting oxygen index (LOI) of 30.5%. Besides, both heat release and smoke generation of as‐prepared EP nanocomposite are significantly suppressed due to the condensed‐phase function of G@SiO2@FeHP. Adding 1.0 wt% G@SiO2@FeHP also brings about 44.5%, 61.1%, and 42.3% enhancements in the tensile strength, tensile modulus, and impact strength of EP nanocomposite. Moreover, the EP nanocomposite exhibits well‐preserved dielectric and electric insulating properties and significantly enhanced λ. This work provides an integrated strategy for the development of multifunctional EP materials, thus facilitating their high‐performance applications.

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Section: Synthesis and Characterization Of G@sio 2 @Fehpmentioning

confidence: 99%

Heterostructured Graphene@Silica@Iron Phenylphosphinate for Fire‐Retardant, Strong, Thermally Conductive Yet Electrically Insulated Epoxy Nanocomposites

Chen,

Huo,

et al. 2024

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“…Epoxy resin (EP) is a common thermosetting polymer widely used in various fields such as construction, electronics, and transportation due to its high versatility, low cost, chemical resistance, and excellent mechanical properties. [1][2][3][4] However, EP is highly flammable and produces large amounts of harmful gases, smoke, and heat during combustion, posing a severe threat to people's lives and property. [5][6][7] Therefore, it is necessary to improve its flame-retardant performance.…”

Section: Introductionmentioning

confidence: 99%

Preparation of cresyl diphenyl phosphate‐loaded halloysite nanotube composite and its flame retardancy in epoxy resin

Zhang,

et al. 2024

J of Applied Polymer Sci

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To address the shortcomings of poor thermal stability, easy migration, and over‐plasticization of the liquid organic phosphorus flame retardant, cresyl diphenyl phosphate (CDP), we employed halloysite nanotube (HNT) as a carrier to load CDP, thus forming a novel composite (HNT‐CDP). The results demonstrated that the CDP loaded into HNT channels was 41 wt%. HNT‐CDP composites exhibited higher thermal stability, water resistance, and flame retardancy than mixtures of HNT and CDP in epoxy resin (EP). With a loading of 15 wt%, the limiting oxygen index of EP/HNT‐CDP increased to 48.3 and achieved a V‐0 rating in UL94 tests. Additionally, HNT‐CDP exhibited better inhibitory effects on the peak heat release rate and total heat release of EP, as well as a longer time to ignition, compared with the mixture. Moreover, as opposed to EP/HNT + CDP, EP/HNT‐CDP exhibited a significant 114.5% increase in tensile strength. These excellent thermal, water resistance, and mechanical properties can be primarily attributed to the loading of CDP by HNT channels. HNT effectively utilizes the channel confinement effect to isolate CDP from directly interacting with EP. The outstanding flame retardancy is mainly due to the synergistic effect between HNT and CDP after the formation of the composite.

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“…The research background of this study is that unfilled reaction-plastic polymer materials do not provide high thermal stability [14][15][16][17][18] and are characterized by one of the disadvantages that limits their use-a low temperature at thermal destruction [19][20][21][22]. In addition, in the works [14][15][16][17][18][19] the technology of forming composite materials with nano particles is presented, which includes complex technological modes; in particular, functionalization in a solvent, solvent removal, ultrasonic dispersion, grafting of surface-active groups, and vacuuming. That is, the forming technology becomes more complicated and, accordingly, the forming time and the cost of the polymer material increase.…”

Section: Introductionmentioning

confidence: 99%

Increasing the Service Life of Marine Transport Using Heat-Resistant Polymer Nanocomposites

Sapronov,

Buketov,

Kim

et al. 2024

Materials

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This paper presents the technological aspects of increasing the thermal stability of polymers, with epoxy binder used to form the polymer materials. Polyethylene polyamine was used to crosslink the epoxy binder. To ensure the thermal stability of the polymer, nanodispersed condensed carbon with a dispersion of 10–16 nm was used. The research into nanocomposites under the influence of elevated temperatures was carried out using the “Thermoscan-2” derivatograph. Complex studies of thermophysical properties were carried out, according to the results of which the optimal content of nanofiller (0.050 pts.wt.) was determined. At the same time, this particular polymer was characterized by the following properties: temperature of the beginning of mass loss—T0 = 624.9 K; final temperature of mass loss—Tf = 718.7 K; relative mass loss—εm = 60.3%. Research into the activation energy of thermal destruction was performed to determine the resistance to the destruction of chemical bonds. It was proved that the maximum value of activation energy (170.1 kJ/mol) is characterized by nanocomposites with a content of nanodispersed condensed carbon of 0.050 pts.wt., which indicates the thermal stability of the polymer.

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Superior flame retardancy and smoke suppression of epoxy resins with zinc ferrite@polyphosphazene nanocomposites

Cited by 25 publications

References 54 publications

Heterostructured Graphene@Silica@Iron Phenylphosphinate for Fire‐Retardant, Strong, Thermally Conductive Yet Electrically Insulated Epoxy Nanocomposites

Heterostructured Graphene@Silica@Iron Phenylphosphinate for Fire‐Retardant, Strong, Thermally Conductive Yet Electrically Insulated Epoxy Nanocomposites

Preparation of cresyl diphenyl phosphate‐loaded halloysite nanotube composite and its flame retardancy in epoxy resin

Increasing the Service Life of Marine Transport Using Heat-Resistant Polymer Nanocomposites

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