Influence of Fe‐MMT on the fire retarding behavior and mechanical property of (ethylene‐vinyl acetate copolymer/magnesium hydroxide) composite

Zhang, Yi; Hu, Yuan; Song, Lei; Wu, Jing; Fang, Shoulin

doi:10.1002/pat.1059

Cited by 51 publications

(48 citation statements)

References 24 publications

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“…In recent years, many researches have published similar results related e.g. to zinc borate [3][4][5], multiwalled carbon nanotubes [6], Fe-MMT [7], layered double hydroxide [8], rubber [9], organo-modified montmorillonite [10], silicon [11], fumed silica [1], talc [12], expandable graphite [13], zinc hydroxystannate [14] and ammonium polyphosphate [15], combined with MH. Nevertheless, very few publications appear in the literature concerning the sepiolite used in combination with MH in EVA matrix.…”

Section: Introductionmentioning

confidence: 83%

Synergistic flame retardant effects between sepiolite and magnesium hydroxide in ethylene-vinyl acetate (EVA) matrix

Huang¹,

Chen²,

Yi³

et al. 2010

Express Polym. Lett.

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Abstract. Some customers are reluctant to change, because the halogen-free solutions may have higher cost. This is one of the reasons that the synergistic effect is always the subject for researchers to pursue. The synergy between sepiolite and magnesium hydroxide (MH) in halogen-free flame retardant ethylene-vinyl acetate (EVA) copolymer was investigated in the paper through some common facilities, such as limiting oxygen index (LOI), UL-94 test, thermogravimetric analysis (TGA), differential thermal analysis (DTA) and cone calorimeter test (CCT). In the wake of the positive results from the LOI and UL-94 tests, the CCT data indicated not only the reduction of heat release rate (HRR) and mass loss rates (MLR), but also prolonged ignition time (TTI) and depressed smoke release (SR) were observed during combustion. Simultaneously, the tensile strength and Young's modulus of the system were also much better improved with the increase of sepiolite added due to the hydrogen bonds between silanol groups attached to the sepiolite molecules and the ester groups of EVA. The synergistic mechanism has been discussed in the paper in terms of the barrier mechanism in the condensed phase.

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Section: Introductionmentioning

confidence: 83%

Synergistic flame retardant effects between sepiolite and magnesium hydroxide in ethylene-vinyl acetate (EVA) matrix

Huang¹,

Chen²,

Yi³

et al. 2010

Express Polym. Lett.

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“…However, the above data indicate that the fire-resistance performances of EVA/LDH blends are enhanced by partly substituting LDH with Al 2 O 3 . The mechanism of the enhancement in UL 94 rating is mainly due to the physical process in the condensed phase, as reported in the literature [12][13][14]. The addition of Al 2 O 3 also increases the polymer melting viscosity, which favors the UL-94 test [15].…”

Section: Loi and Ul 94 Ratingmentioning

confidence: 83%

Synergistic Flame-retardant Effects of Aluminum Oxide with Layered Double Hydroxides in EVA/LDH Composites

Jiao

Chen

Zhang

2009

Journal of Thermoplastic Composite Materials

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The synergistic effects of aluminum oxide (Al 2 O 3 ) with layered double hydroxides (LDH) in ethylene vinyl acetate copolymer/LDH (EVA/LDH) composites have been studied using limiting oxygen index, UL-94 tests, and cone calorimeter test (CCT). The results from the UL-94 tests show that the Al 2 O 3 can act as flame-retardant synergistic additive in EVA/LDH composites, and 2 phr Al 2 O 3 can raise UL rating from V-1 to V-0 at 120 phr loadings of additives. The CCT data indicated that the addition of Al 2 O 3 in EVA/LDH system can greatly reduce the heat release rate, mass loss rate, and the production rate of carbon monoxide.KEY WORDS: synergistic effect, layered double hydroxide, halogen-free flame retardant.

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“…In particular, montmorillonite is a desirable layered inorganic compound that provides various polymeric materials with incombustible characteristics. [10][11][12][13][14][15][16][17] In contrast, although magadiite is also a layered inorganic compound, no remarkable improvement in the flammability properties of polystyrene (PS)/magadiite composites has been reported thus far. 18 We presume that poor dispersibility of magadiite in PS matrix must be the most significant factor for the low incombustibility of PS/magadiite composites.…”

Section: Introductionmentioning

confidence: 99%

Influence of magadiite dispersion states on the flammability of polystyrene and polyphenylene ether-polystyrene alloy nanocomposites

Yukutake¹,

Kobayashi

Otsuka

et al. 2010

Polym J

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A layered hydrous sodium silicate mineral, 'magadiite,' was uniformly exfoliated into polystyrene (PS) matrices to result in a PS/magadiite nanocomposite with high flame-retardant properties. Surface-initiated radical polymerization of styrene from the magadiite interlayer afforded PS graft chains along with exfoliation of each silicate layer to contribute to a uniform dispersion of inorganic nanosheet. The resulting PS-grafted magadiite (PS-g-magadiite) was then mixed with PS homopolymer by a meltblending process, forming PS/magadiite nanocomposites with fine dispersion of magadiite, which was confirmed by X-ray diffraction, transmission electron microscopy and dynamic mechanical analysis. A series of PS/magadiite composites with various dispersion states and blending ratios were molded into pressed-film-type test pieces to evaluate their flammabilities by cone calorimetric measurements. A peak heat release rate (PHRR) of well-dispersed PS/magadiite nanocomposites was half of that of the PS homopolymer. The dispersibility of magadiite was found to be a crucial factor for improving flammabilities for PS/magadiite composites. Polyphenylene ether-PS/magadiite nanocomposites were also prepared in a similar manner using the PS-g-magadiite nanosheet, but they could not suppress higher PHRR.

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Influence of Fe‐MMT on the fire retarding behavior and mechanical property of (ethylene‐vinyl acetate copolymer/magnesium hydroxide) composite

Cited by 51 publications

References 24 publications

Synergistic flame retardant effects between sepiolite and magnesium hydroxide in ethylene-vinyl acetate (EVA) matrix

Synergistic flame retardant effects between sepiolite and magnesium hydroxide in ethylene-vinyl acetate (EVA) matrix

Synergistic Flame-retardant Effects of Aluminum Oxide with Layered Double Hydroxides in EVA/LDH Composites

Influence of magadiite dispersion states on the flammability of polystyrene and polyphenylene ether-polystyrene alloy nanocomposites

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