Photocrosslinking of halogen‐free flame‐retarded ethylene‐vinyl acetate copolymer by phosphorous‐nitrogen compound NP28

Wu, Qianghua; Qu, Baihua; Sun, Mei

doi:10.1002/app.30539

Cited by 14 publications

(10 citation statements)

References 25 publications

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“…However, there has been an increasing interest to utilize halogen‐free flame retarding substances. Much more efforts have been done to use phosphorus‐based compounds for flame retardants . Researchers have reported that P–N flame retardants must cooperate with other synergistic agents in preparation for excellent flame retarding thermoplastic esters .…”

Section: Introductionmentioning

confidence: 99%

Preparation, thermal, and flammability of halogen‐free flame retarding thermoplastic poly(ether‐ester) elastomer/montmorillonite nanocomposites

et al. 2014

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In this article, the nanocomposites thermoplastic polyester-ether elastomer (TPEE) with phosphorousnitrogen (P-N) flame retardants and montmorillonite (MMT) was prepared by melt blending.The fire resistance of nanocomposites was analyzed by limiting oxygen index (LOI) and vertical burning (UL94) test. The result shows that the flame retardants containing P-N increased the LOI of the material from 17.3 to 27%. However, TPEE containing P-N flame retardants just got UL94 V-2 ranking, which resulted in the flaming dripping phenomenon. On the other hand, TPEE containing P-N flame retardant and organic-modified montmorillonite (o-MMT) achieved UL94 V-0 rating for the special microstructure. The XRD and TEM morphology has demonstrated that the formation of multi-ordered structure regarding restricted segmental motions at the organic-inorganic interface and stronger interactions between the clay mineral layers and the polymer chains. The structure was supported by the results of rheological properties and DSC analysis. The thermal degradation and char residue characterization was studied by thermal gravimetric analysis (TGA) and SEM-EDX measurements, respectively. The TGA and SEM-EDX have demonstrated that o-MMT results in the increase of char yield and the formation of the thermal stable carbonaceous char. POLYM. COMPOS., 37:700-708, 2016.

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Section: Introductionmentioning

confidence: 99%

Preparation, thermal, and flammability of halogen‐free flame retarding thermoplastic poly(ether‐ester) elastomer/montmorillonite nanocomposites

et al. 2014

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“…However, there has been increasing interest in the use of halogen‐free flame retardant substances. Many more efforts have been made to use phosphorus‐based compounds for flame retardants . Researchers have reported that phosphorus–nitrogen (P–N) flame retardants must cooperate with other synergistic agents to prepare excellent flame‐retarding thermoplastic esters …”

Section: Introductionmentioning

confidence: 99%

Flame‐retarding mechanism of organically modified montmorillonite and phosphorous‐Nitrogen flame retardants for the preparation of a halogen‐free, flame‐retarding thermoplastic poly(ester ether) elastomer

Zhong

Lin

et al. 2014

J of Applied Polymer Sci

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In this study, thermoplastic poly(ester ether) elastomer (TPEE) nanocomposites with phosphorus–nitrogen (P–N) flame retardants and montmorillonite (MMT) were prepared by melt blending. The fire resistance of the nanocomposites was analyzed by limiting oxygen index (LOI) and vertical burning (UL 94) tests. The results show that the addition of the P–N flame retardants increased the LOI of the material from 17.3 to 27%. However, TPEE containing P–N flame retardants only obtained a UL 94 V‐2 ranking; this resulted in a flame dripping phenomenon. On the other hand, TPEE containing the P–N flame retardant and organically modified montmorillonite (o‐MMT) achieved better thermal stability and good flame retardancy; this was ascribed to its partially intercalated structure. The synergistic effect and synergism were investigated by Fourier transform infrared spectroscopy and thermogravimetry. The introduction of o‐MMT decreased the inhibition action of the P–N flame retardant and increased the amount of residues. The catalytic decomposition effect of MMT and the barrier effect of the layer silicates are discussed in this article. The residues after heating in the muffle furnace were analyzed by scanning electron microscopy, energy‐dispersive X‐ray spectroscopy and laser Raman spectroscopy. It was shown that the intercalated layer silicate structure facilitated the crosslinking interaction and promoted the formation of additional carbonaceous char residues in the formation of the compact, dense, folded‐structure surface char. The combination of the P–N flame retardant and o‐MMT in TPEE resulted in a better thermal stability and fire resistance because of the synergistic effect of the mixture. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 41094.

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“…Halogen‐containing flame retardants possess superior flame‐retardance efficiency for O‐SEBS–PP composites, but their applications are restricted because they can produce corrosive and toxic smoke during combustion . Therefore, the development and application of halogen‐free flame retardants has become a subject of extensive investigation for O‐SEBS–PP composites.…”

Section: Introductionmentioning

confidence: 99%

Surface modification of magnesium hydroxide and its application in flame‐retardant oil‐extended styrene–ethylene–butadiene–styrene/polypropylene composites

Liu

et al. 2018

J of Applied Polymer Sci

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Magnesium hydroxide (MH) was modified with triethoxysilane and polymethyl-vinyl silicone rubber and used to prepare flame-retardant oil-extended styrene-ethylene-butadiene-styrene (O-SEBS)-polypropylene (PP) composites. The water contact angle of modified magnesium hydroxide (MMH) reached 141 ; this indicated that MMH possessed excellent hydrophobic properties. The samples (1.6 mm) passed the UL-94 V-0 rating during vertical burning tests when the loading amount of MH or MMH was 70 wt %. This indicated the modification did not decrease the flame-retardant properties of MH. The tensile strength and elongation at break values of the MMH-O-SEBS-PP composites increased by 20.4 and 88.9%, respectively, compared with those of the MH-O-SEBS-PP composites. The modification of MH enhanced the interfacial compatibility between the flame retardant and the matrix; thus, the mechanical performance was enhanced. Moreover, MMH was scarcely extracted after water treatment for 168 h at 70 C. As a result, the mechanical properties and flame retardancy of the MMH-O-SEBS-PP composites were well maintained after the water treatment. The modification of the MH endowed the O-SEBS-PP composites with an excellent compatibility and water-resistant performance.

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Photocrosslinking of halogen‐free flame‐retarded ethylene‐vinyl acetate copolymer by phosphorous‐nitrogen compound NP28

Cited by 14 publications

References 25 publications

Preparation, thermal, and flammability of halogen‐free flame retarding thermoplastic poly(ether‐ester) elastomer/montmorillonite nanocomposites

Preparation, thermal, and flammability of halogen‐free flame retarding thermoplastic poly(ether‐ester) elastomer/montmorillonite nanocomposites

Flame‐retarding mechanism of organically modified montmorillonite and phosphorous‐Nitrogen flame retardants for the preparation of a halogen‐free, flame‐retarding thermoplastic poly(ester ether) elastomer

Surface modification of magnesium hydroxide and its application in flame‐retardant oil‐extended styrene–ethylene–butadiene–styrene/polypropylene composites

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