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Compound of nickel phosphate with Ni(OH)(PO4)2― layers and synergistic application with intumescent flame retardants in thermoplastic polyurethane elastomer / Xueying Shan in Industrial & engineering chemistry research, Vol. 50 N° 12 (Juin 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7201-7209 Titre : Compound of nickel phosphate with Ni(OH)(PO4)2― layers and synergistic application with intumescent flame retardants in thermoplastic polyurethane elastomer Type de document : texte imprimé Auteurs : Xueying Shan, Auteur ; Ping Zhang, Auteur ; Lei Song, Auteur Année de publication : 2011 Article en page(s) : pp. 7201-7209 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Flame  retardant  Synergism Résumé : In this paper, a new method was used to prepare flame retardant thermoplastic polyurethane elastomer (TPU). Nickel phosphate with Ni(OH)(PO4)2― layers, Na(H3O)2{Ni4(OH)4(HPO4)3(H2PO4)} (NaNiP), was prepared by a hydrothermal method, and it was added to the TPU and intumescent flame retardant (IFR) system. The synergistic effect between NaNiP and IFR was studied. With the addition of 1 wt % NaNiP, the limiting oxygen index (LOI) value of the TPU/ IFR system was increased from 27 to 32%. The UL-94 tests showed that TPU containing 20 wt % IFR had no rating, but TPU with 19 wt % IFR and 1 wt % NaNiP could reach the V-0 rating. The results of thermogravimetric analysis/infrared spectrometry (TGA―IR) showed that NaNiP could delay volatilized products in TPU/IFR system. Laser Raman spectroscopy (LRS) of residual char indicated that the ordered carbon was increased with the addition of 1 wt % NaNiP, and the content ratio of ordered carbon in outer char was larger than that in inner char. Scanning electron microscopy (SEM) indicated that NaNiP could help the TPU/IFR system form a dense and intumescent char layer. Therefore, a just-right formulation between IFR and NaNiP in TPU showed optimal synergistic effect. The synergistic mechanism was also proposed in this paper. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239034 [article] Compound of nickel phosphate with Ni(OH)(PO4)2― layers and synergistic application with intumescent flame retardants in thermoplastic polyurethane elastomer [texte imprimé] / Xueying Shan, Auteur ; Ping Zhang, Auteur ; Lei Song, Auteur . - 2011 . - pp. 7201-7209. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7201-7209 Mots-clés : Flame  retardant  Synergism Résumé : In this paper, a new method was used to prepare flame retardant thermoplastic polyurethane elastomer (TPU). Nickel phosphate with Ni(OH)(PO4)2― layers, Na(H3O)2{Ni4(OH)4(HPO4)3(H2PO4)} (NaNiP), was prepared by a hydrothermal method, and it was added to the TPU and intumescent flame retardant (IFR) system. The synergistic effect between NaNiP and IFR was studied. With the addition of 1 wt % NaNiP, the limiting oxygen index (LOI) value of the TPU/ IFR system was increased from 27 to 32%. The UL-94 tests showed that TPU containing 20 wt % IFR had no rating, but TPU with 19 wt % IFR and 1 wt % NaNiP could reach the V-0 rating. The results of thermogravimetric analysis/infrared spectrometry (TGA―IR) showed that NaNiP could delay volatilized products in TPU/IFR system. Laser Raman spectroscopy (LRS) of residual char indicated that the ordered carbon was increased with the addition of 1 wt % NaNiP, and the content ratio of ordered carbon in outer char was larger than that in inner char. Scanning electron microscopy (SEM) indicated that NaNiP could help the TPU/IFR system form a dense and intumescent char layer. Therefore, a just-right formulation between IFR and NaNiP in TPU showed optimal synergistic effect. The synergistic mechanism was also proposed in this paper. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239034

Effect of nickel-containing layered double hydroxides and cyclophosphazene compound on the thermal stability and flame retardancy of poly(lactic acid) / Xueying Shan in Industrial & engineering chemistry research, Vol. 51 N° 40 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13037-13045 Titre : Effect of nickel-containing layered double hydroxides and cyclophosphazene compound on the thermal stability and flame retardancy of poly(lactic acid) Type de document : texte imprimé Auteurs : Xueying Shan, Auteur ; Lei Song, Auteur ; Weiyi Xing, Auteur Année de publication : 2012 Article en page(s) : pp. 13037-13045 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Flame  Thermal  stability Résumé : Hydrotalcite-like anionic clays or layered double hydroxides with dodecylbenzenesulfonate anions (NiFe, NiAl, and NiCr LDH-SDS, where SDS denotes sodium dodecyl sulfate) were prepared by the coprecipitation method. Hexaphenoxycyclotriphosphazene (HPCP) is an effective cyclophosphazene flame retardant. The HPCP molecule contains a cyclic backbone consisting of alternating phosphorus and nitrogen atoms. LDH-SDS and HPCP were first used to prepare poly(lactic acid) (PLA) composites. One goal of this work was to compare the thermal stability and flame retardancy of PLA/ HPCP/LDH-SDS composites. The structures and properties of LDH-SDS materials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Thermal analysis and char residue analysis of PLA/HPCP/LDH-SDS composites suggested that NiFe, NiAl, and NiCr LDH-SDS materials play different roles in improving the thermal stability and flame retardancy of PLA composites. The effective mechanism of LDH-SDS and HPCP in PLA composites is also hypothesized in this work. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451452 [article] Effect of nickel-containing layered double hydroxides and cyclophosphazene compound on the thermal stability and flame retardancy of poly(lactic acid) [texte imprimé] / Xueying Shan, Auteur ; Lei Song, Auteur ; Weiyi Xing, Auteur . - 2012 . - pp. 13037-13045. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 40 (Octobre 2012) . - pp. 13037-13045 Mots-clés : Flame  Thermal  stability Résumé : Hydrotalcite-like anionic clays or layered double hydroxides with dodecylbenzenesulfonate anions (NiFe, NiAl, and NiCr LDH-SDS, where SDS denotes sodium dodecyl sulfate) were prepared by the coprecipitation method. Hexaphenoxycyclotriphosphazene (HPCP) is an effective cyclophosphazene flame retardant. The HPCP molecule contains a cyclic backbone consisting of alternating phosphorus and nitrogen atoms. LDH-SDS and HPCP were first used to prepare poly(lactic acid) (PLA) composites. One goal of this work was to compare the thermal stability and flame retardancy of PLA/ HPCP/LDH-SDS composites. The structures and properties of LDH-SDS materials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Thermal analysis and char residue analysis of PLA/HPCP/LDH-SDS composites suggested that NiFe, NiAl, and NiCr LDH-SDS materials play different roles in improving the thermal stability and flame retardancy of PLA composites. The effective mechanism of LDH-SDS and HPCP in PLA composites is also hypothesized in this work. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26451452

Enhanced properties of the incorporation of a novel reactive phosphorus- and sulfur-containing flame-retardant monomer into unsaturated polyester resin / Kang Dai in Industrial & engineering chemistry research, Vol. 51 N° 49 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 49 (Décembre 2012) . - pp. 15918–15926 Titre : Enhanced properties of the incorporation of a novel reactive phosphorus- and sulfur-containing flame-retardant monomer into unsaturated polyester resin Type de document : texte imprimé Auteurs : Kang Dai, Auteur ; Lei Song, Auteur ; Richard K. K. Yuen, Auteur Année de publication : 2013 Article en page(s) : pp. 15918–15926 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Reactive  phosphorus Résumé : A novel reactive phosphorus- and sulfur-containing flame-retardant monomer [di(allyloxybisphenol sulfone) phenoxy phosphonate, DASPP] was successfully synthesized and well characterized. Various amounts of DASPP were incorporated into the unsaturated polyester by radical bulk polymerization. The thermal properties and flammability of the flame-retardant unsaturated polyester resin (FR-UPR) samples were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), limiting oxygen index (LOI) measurements, and cone calorimetry. The results showed that the introduction of DASPP into unsaturated polyester resin (UPR) can substantially improve its fire resistance and high-temperature stability. Interestingly, a linear increase in the glass transition temperature (Tg) with increasing incorporated DASPP content was observed by DSC. Scanning electron microscopy (SEM) and Raman spectroscopy studies revealed that DASPP can effectively improve the microstructure of UPR char residue and increase its graphitization degree, which can enhance UPR’s thermo-oxidative stability and char yield in high-temperature regions. Furthermore, real-time Fourier transform infrared (RTIR) spectroscopy was employed to study the thermo-oxidative degradation reactions of different UPR samples, providing insight into the combustion mechanism. In addition, results from tensile testing demonstrated the improved mechanical properties for the samples containing DASPP. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie302106w [article] Enhanced properties of the incorporation of a novel reactive phosphorus- and sulfur-containing flame-retardant monomer into unsaturated polyester resin [texte imprimé] / Kang Dai, Auteur ; Lei Song, Auteur ; Richard K. K. Yuen, Auteur . - 2013 . - pp. 15918–15926. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 49 (Décembre 2012) . - pp. 15918–15926 Mots-clés : Reactive  phosphorus Résumé : A novel reactive phosphorus- and sulfur-containing flame-retardant monomer [di(allyloxybisphenol sulfone) phenoxy phosphonate, DASPP] was successfully synthesized and well characterized. Various amounts of DASPP were incorporated into the unsaturated polyester by radical bulk polymerization. The thermal properties and flammability of the flame-retardant unsaturated polyester resin (FR-UPR) samples were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), limiting oxygen index (LOI) measurements, and cone calorimetry. The results showed that the introduction of DASPP into unsaturated polyester resin (UPR) can substantially improve its fire resistance and high-temperature stability. Interestingly, a linear increase in the glass transition temperature (Tg) with increasing incorporated DASPP content was observed by DSC. Scanning electron microscopy (SEM) and Raman spectroscopy studies revealed that DASPP can effectively improve the microstructure of UPR char residue and increase its graphitization degree, which can enhance UPR’s thermo-oxidative stability and char yield in high-temperature regions. Furthermore, real-time Fourier transform infrared (RTIR) spectroscopy was employed to study the thermo-oxidative degradation reactions of different UPR samples, providing insight into the combustion mechanism. In addition, results from tensile testing demonstrated the improved mechanical properties for the samples containing DASPP. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie302106w

Fabrication and characterization of TiO2 nanotube – epoxy nanocomposites / Yu Wu in Industrial & engineering chemistry research, Vol. 50 N° 21 (Novembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 21 (Novembre 2011) . - pp. 11988–11995 Titre : Fabrication and characterization of TiO2 nanotube – epoxy nanocomposites Type de document : texte imprimé Auteurs : Yu Wu, Auteur ; Lei Song, Auteur ; Yuan Hu, Auteur Année de publication : 2011 Article en page(s) : pp. 11988–11995 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Nanocomposite  Titanium  oxide Résumé : A systematic study has been conducted to investigate the polymer matrix properties resulting from the introduction of TiO2 nanotubes (1-5% by weight) that had been surface-modified with phenyl dichlorophosphate (PDCP), into an epoxy resin. The thermal, mechanical, and combustion properties of the nanocomposites and the neat resin were measured by thermogravimetric analysis, dynamic mechanical thermal analysis, and microscale combustion calorimetry. The nanofiller infusion improved the thermal and mechanical properties of the epoxy resin. The nanocomposites resulted in an increase in the storage modulus and glass transition temperature compared to those of the neat epoxy resin. In addition, the combustion characteristics of the epoxy polymer were effectively improved by addition of the surface-modified nanotubes. Thermogravimetric analysis/infrared spectrometry and direct pyrolysis mass spectrometry confirmed that the TiO2 nanotubes were able to improve the thermal stability and combustion behavior of the polymer matrix because the TNTs retard the release of inflammable gas and change the degradation pathway. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24697519 [article] Fabrication and characterization of TiO2 nanotube – epoxy nanocomposites [texte imprimé] / Yu Wu, Auteur ; Lei Song, Auteur ; Yuan Hu, Auteur . - 2011 . - pp. 11988–11995. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 21 (Novembre 2011) . - pp. 11988–11995 Mots-clés : Nanocomposite  Titanium  oxide Résumé : A systematic study has been conducted to investigate the polymer matrix properties resulting from the introduction of TiO2 nanotubes (1-5% by weight) that had been surface-modified with phenyl dichlorophosphate (PDCP), into an epoxy resin. The thermal, mechanical, and combustion properties of the nanocomposites and the neat resin were measured by thermogravimetric analysis, dynamic mechanical thermal analysis, and microscale combustion calorimetry. The nanofiller infusion improved the thermal and mechanical properties of the epoxy resin. The nanocomposites resulted in an increase in the storage modulus and glass transition temperature compared to those of the neat epoxy resin. In addition, the combustion characteristics of the epoxy polymer were effectively improved by addition of the surface-modified nanotubes. Thermogravimetric analysis/infrared spectrometry and direct pyrolysis mass spectrometry confirmed that the TiO2 nanotubes were able to improve the thermal stability and combustion behavior of the polymer matrix because the TNTs retard the release of inflammable gas and change the degradation pathway. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24697519

Facile synthesis of poly (vinyl alcohol) / a - titanium phosphate nanocomposite with markedly enhanced properties / Chenlu Bao in Industrial & engineering chemistry research, Vol. 50 N° 19 (Octobre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11109-11116 Titre : Facile synthesis of poly (vinyl alcohol) / a - titanium phosphate nanocomposite with markedly enhanced properties Type de document : texte imprimé Auteurs : Chenlu Bao, Auteur ; Yuqiang Guo, Auteur ; Lei Song, Auteur Année de publication : 2011 Article en page(s) : pp. 11109-11116 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Nanocomposite Résumé : Nanocomposites based on poly(vinyl alcohol) and a-titanium phosphate were prepared by the solvent-cast method. The a-titanium phosphate nanosheets were homogeneously dispersed in the poly(vinyl alcohol) matrix, and marked property enhancements were obtained. In thermogravimetric analysis, the maximum decomposition temperature of the nanocomposites was increased by 80 °C, and the value of maximum decomposition was reduced by 60%. The storage modulus and tensile strength were improved by 64% and 84%, respectively. According to microscale combustion calorimetry, the ignition temperature (89 °C) and the temperature for peak heat release rate (192 °C) were significantly increased, whereas the peak heat release rate was sharply reduced (79%). The property enhancements are mainly due to strong hydrogen bonds between the poly(vinyl alcohol) and a-titanium phosphate nanolayers, as well as the molecule-movement-restricting and physical-barrier effects due to the a-titanium phosphate nanolayers. In addition, the effects of the water content and α-titanium phosphate amount on the electrical conductivity of poly(vinyl alcohol) nanocomposites were investigated. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24573308 [article] Facile synthesis of poly (vinyl alcohol) / a - titanium phosphate nanocomposite with markedly enhanced properties [texte imprimé] / Chenlu Bao, Auteur ; Yuqiang Guo, Auteur ; Lei Song, Auteur . - 2011 . - pp. 11109-11116. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11109-11116 Mots-clés : Nanocomposite Résumé : Nanocomposites based on poly(vinyl alcohol) and a-titanium phosphate were prepared by the solvent-cast method. The a-titanium phosphate nanosheets were homogeneously dispersed in the poly(vinyl alcohol) matrix, and marked property enhancements were obtained. In thermogravimetric analysis, the maximum decomposition temperature of the nanocomposites was increased by 80 °C, and the value of maximum decomposition was reduced by 60%. The storage modulus and tensile strength were improved by 64% and 84%, respectively. According to microscale combustion calorimetry, the ignition temperature (89 °C) and the temperature for peak heat release rate (192 °C) were significantly increased, whereas the peak heat release rate was sharply reduced (79%). The property enhancements are mainly due to strong hydrogen bonds between the poly(vinyl alcohol) and a-titanium phosphate nanolayers, as well as the molecule-movement-restricting and physical-barrier effects due to the a-titanium phosphate nanolayers. In addition, the effects of the water content and α-titanium phosphate amount on the electrical conductivity of poly(vinyl alcohol) nanocomposites were investigated. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24573308

Flame retardancy and thermal degradation of intumescent flame retardant starch-based biodegradable composites / Kun Wu in Industrial & engineering chemistry research, Vol. 48 N° 6 (Mars 2009) 

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In Situ polymerization of graphene, graphite Oxide, and functionalized graphite oxide into epoxy resin and comparison study of on-the-flame behavior / Yuqiang Guo in Industrial & engineering chemistry research, Vol. 50 N° 13 (Juillet 2011) 

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Intumescent flame retardation of starch containing polypropylene semibiocomposites / Shibin Nie in Industrial & engineering chemistry research, Vol. 48 N° 24 (Décembre 2009) 

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Intumescent flame retardation of starch containing polypropylene semibiocomposites / Shibin Nie in Industrial & engineering chemistry research, Vol. 48 N° 24 (Décembre 2009) 

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Investigation of thermal and combustion properties for intumescent flame-retardant ethylene–viny acetate composites containing ferrous disulfide / Lei Wang in Industrial & engineering chemistry research, Vol. 51 N° 46 (Novembre 2012) 

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Studies on mechanical poperties, thermal degradation, and combustion behaviors of poly(1,4 - butylene terephthalate)/glass fiber/cerium hypophosphite composites / Wei Yang in Industrial & engineering chemistry research, Vol. 51 N° 24 (Juin 2012) 

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Synergistic effect of graphene on antidripping and fire resistance of intumescent flame retardant poly(butylene succinate) composites / Xin Wang in Industrial & engineering chemistry research, Vol. 50 N° 9 (Mai 2011) 

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The thermal property and flame retardant mechanism of intumescent flame retardant paraffin system with metal / Ping Zhang in Industrial & engineering chemistry research, Vol. 49 N° 13 (Juillet 2010) 

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Thermal properties and combustion behaviors of chitosan based flame retardant combining phosphorus and nickel / Shuang Wu in Industrial & engineering chemistry research, Vol. 51 N° 9 (Mars 2012) 

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Transparent epoxy acrylate resin nanocomposites reinforced with cellulose nanocrystals / Haifeng Pan in Industrial & engineering chemistry research, Vol. 51 N° 50 (Décembre 2012) 

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