Flammability characteristics and synergistic effect of hydrotalcite with microencapsulated red phosphorus in halogen-free flame retardant EVA composite

Du, Le; Qu, Baihua; Xu, Zhenjin

doi:10.1016/j.polymdegradstab.2005.08.004

Cited by 99 publications

(40 citation statements)

References 17 publications

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“…Hydrotalcites have attracted much attention during the development of new environmentally friendly flame retardants. [7][8][9][10] III is a trivalent metal cation, and Y stands for m valence inorganic or organic acid anions. 11 The structure of the hydrotalcites is derived from a brucite structure in which trivalent cations partially substitute for divalent ones.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a magnesium/aluminum/iron layered double hydroxide and its flammability characteristics in halogen‐free, flame‐retardant ethylene/vinyl acetate copolymer composites

Jiao

Wang

Chen

et al. 2007

J of Applied Polymer Sci

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Mg-Al-Fe ternary hydrotalcites were synthesized by a coprecipitation method and characterized with powder X-ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetric analysis. The flame-retardant effects of Mg/Al-CO 3 layered double hydroxides (LDHs) and Mg/Al/Fe-CO 3 LDHs in an ethylene/vinyl acetate copolymer (EVA) were studied with the limited oxygen index (LOI), the UL-94 test, and the cone calorimeter test (CCT), and the thermal degradation behavior of the composites was examined by thermogravimetric analysis. The results showed that the LOI values of the EVA/(Mg/Al/Fe-CO 3 LDH) composites were basically higher than those of the EVA/(Mg/Al-CO 3 LDH) composites at the same additive level. In the UL-94 test, there was no rating for the EVA/(Mg/Al-CO 3 LDH) composite at the 50% additive level, and a dripping phenomenon occurred. However, the EVA/(Mg/Al/Fe-CO 3 LDH) composites at the same loading level of LDHs containing a suitable amount of Fe 31 ion reached the V-0 rating, the dripping phenomenon disappearing. The CCTs indicated that the heat release rate (HRR) of the EVA composites with Mg/Al/Fe-CO 3 LDHs containing a suitable amount of Fe 31 decreased greatly in comparison with that of the composites with Mg/Al-CO 3 LDHs. The introduction of a given amount of Fe 31 ion into Mg/Al-CO 3 LDHs resulted in an increase in the LOI, a decrease in the HRR, and the achievement of the UL-94 V-0 rating.

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Section: Introductionmentioning

confidence: 99%

Synthesis of a magnesium/aluminum/iron layered double hydroxide and its flammability characteristics in halogen‐free, flame‐retardant ethylene/vinyl acetate copolymer composites

Jiao

Wang

Chen

et al. 2007

J of Applied Polymer Sci

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“…Pure EVA resin decomposes at 314 C leaving negligible char at 600 C, and a two-steps degradation is found from the DTG curve for EVA resin. The first degradation step, in the range of 300e400 C, can be assigned to the evolution of acetic acid, whereas the second degradation step in the range of 420e490 C is due to the degradation of polyethylene chains [36]. T initial of EVA filled with 1 wt% CRG is 9 C higher than that of EVA resin, moreover, T max at two-steps degradation increases slightly for the CRG contained samples, indicating the thermal enhancing effect of graphene sheets.…”

Section: Thermal Stabilitymentioning

confidence: 94%

A novel intumescent flame retardant-functionalized graphene: Nanocomposite synthesis, characterization, and flammability properties

Huang

Chen

Tang

et al. 2012

Materials Chemistry and Physics

113

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“…However, because of the bad environmental impact of processing and combustion of certain brominated flame retardants, brominated flame retardants will be gradually replaced by some halogen-free flame retardants, particularly metallic hydroxide flame retardants (such as magnesium hydroxide [7,8] , aluminum trihydrate [9][10][11] , hydrotalcite [12] , magnesium hydroxide sulfate hydrate whisker [13] . Among the metallic hydroxide flame retardants, aluminum trihydrate (ATH) is a kind of popular flame retardant and smoke suppressant with numerous benefits, such as cheap, safe, elimination of heavy metal promoters (e.g.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and flame-retardant properties of epoxy resins and AACHH composites

Qin

Zhang

et al. 2009

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Flame retardant epoxy resins were prepared by a simple mixed method using ammonium aluminum carbonate hydroxy hydrate (AACHH) as a halogen-free flame retardant. The prepared samples were characterized by X-ray diffraction, thermogravimetric and differential scanning calorimetry, scanning electron microscope and limiting oxygen index(LOI) experiments. Effects of AACHH content on LOI of epoxy resins/AACHH composite and flame retardant mechanism were investigated and discussed. Results show that AACHH exhibites excellent flame-retardant properties in epoxy resin(EP). When the content of AACHH was 47.4%, the LOI of EP reached 32.2%. Moreover, the initial and terminal decomposition temperature of EP increased by 48 and 40 ℃ , respectively. ℃The flame retarded mechanism of AACHH is due to the synergic flame retardant effects of diluting, cooling, decomposition resisting and obstructing.

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Flammability characteristics and synergistic effect of hydrotalcite with microencapsulated red phosphorus in halogen-free flame retardant EVA composite

Cited by 99 publications

References 17 publications

Synthesis of a magnesium/aluminum/iron layered double hydroxide and its flammability characteristics in halogen‐free, flame‐retardant ethylene/vinyl acetate copolymer composites

Synthesis of a magnesium/aluminum/iron layered double hydroxide and its flammability characteristics in halogen‐free, flame‐retardant ethylene/vinyl acetate copolymer composites

A novel intumescent flame retardant-functionalized graphene: Nanocomposite synthesis, characterization, and flammability properties

Synthesis, characterization and flame-retardant properties of epoxy resins and AACHH composites

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