Documents disponibles écrits par cet auteur

Electron beam irradiation cross linking of halogen-free flame-retardant ethylene vinyl acetate (EVA) copolymer by silica gel microencapsulated ammonium polyphosphate and char-forming agent / Bibo Wang in Industrial & engineering chemistry research, Vol. 50 N° 9 (Mai 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5596-5605 Titre : Electron beam irradiation cross linking of halogen-free flame-retardant ethylene vinyl acetate (EVA) copolymer by silica gel microencapsulated ammonium polyphosphate and char-forming agent Type de document : texte imprimé Auteurs : Bibo Wang, Auteur ; Qilong Tai, Auteur ; Shibin Nie, Auteur Année de publication : 2011 Article en page(s) : pp. 5596-5605 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Silica  gel  Flame  retardant Résumé : Flame-retardant ethylene vinyl acetate copolymer (EVA) by silica gel-microencapsulated ammonium polyphosphate (MCAPP) and char-forming agent (CFA) have been cross linked by electron beam irradiation. The effects of electron beam irradiation on the electrical, thermal, mechanical, and flame-retardant properties of irradiated EVA composites were investigated. The thermal degradations of EVA/MCAPP/CFA composites were characterized by real-time Fourier transform infrared spectra and thermogravimetric analysis/infrared spectrometry. The results showed that a joint effect on the flame retardancy of EVA composites existed between the MCAPP and CFA. The volume resistivity and mechanical and thermal properties of the irradiated EVA composites were also evidently improved at appropriate irradiation dose as compared with those of unirradiated EVA composites, whereas the volatilized products for the combustible gases were decreased. Furthermore, the irradiated EVA composites can still pass UL-94 V-0 rating after treatment by water for 7 days at 50 °C, indicating excellent water resistance. This investigation provides a promising formulation for the halogen-free flame-retardant EVA with excellent properties. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128683 [article] Electron beam irradiation cross linking of halogen-free flame-retardant ethylene vinyl acetate (EVA) copolymer by silica gel microencapsulated ammonium polyphosphate and char-forming agent [texte imprimé] / Bibo Wang, Auteur ; Qilong Tai, Auteur ; Shibin Nie, Auteur . - 2011 . - pp. 5596-5605. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5596-5605 Mots-clés : Silica  gel  Flame  retardant Résumé : Flame-retardant ethylene vinyl acetate copolymer (EVA) by silica gel-microencapsulated ammonium polyphosphate (MCAPP) and char-forming agent (CFA) have been cross linked by electron beam irradiation. The effects of electron beam irradiation on the electrical, thermal, mechanical, and flame-retardant properties of irradiated EVA composites were investigated. The thermal degradations of EVA/MCAPP/CFA composites were characterized by real-time Fourier transform infrared spectra and thermogravimetric analysis/infrared spectrometry. The results showed that a joint effect on the flame retardancy of EVA composites existed between the MCAPP and CFA. The volume resistivity and mechanical and thermal properties of the irradiated EVA composites were also evidently improved at appropriate irradiation dose as compared with those of unirradiated EVA composites, whereas the volatilized products for the combustible gases were decreased. Furthermore, the irradiated EVA composites can still pass UL-94 V-0 rating after treatment by water for 7 days at 50 °C, indicating excellent water resistance. This investigation provides a promising formulation for the halogen-free flame-retardant EVA with excellent properties. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128683

Preparation of polyurethane microencapsulated expandable graphite, and its application in ethylene vinyl acetate copolymer containing silica - gel microencapsulated ammonium polyphosphate / Bibo Wang in Industrial & engineering chemistry research, Vol. 50 N° 20 (Octobre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 20 (Octobre 2011) . - pp. 11476-11484 Titre : Preparation of polyurethane microencapsulated expandable graphite, and its application in ethylene vinyl acetate copolymer containing silica - gel microencapsulated ammonium polyphosphate Type de document : texte imprimé Auteurs : Bibo Wang, Auteur ; Shuang Hu, Auteur ; Kuimin Zhao, Auteur Année de publication : 2011 Article en page(s) : pp. 11476-11484 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Silica  gel  Preparation Résumé : Polyurethane miaoencapsulated expandable graphite (PUEG) is prepared by in situ polymerization, and its structure is characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The results indicated PUEG is successfully prepared. The microencapsulated expandable graphite (EG) leads to an increase in the thermal stability and the expanded volume. The research compares the influence of an EG/ ammonium polyphosphate (APP)/ethylene vinyl acetate copolymer (EVA) system and a PUEG/silica-gel microencapsulated ammonium polyphosphate (MCAPP)/EVA system on the flame retardancy and mechanical properties. The results indicated that EVA/MCAPP/PUEG composite possesses the same LOI value and UL-94 rating as those of EVA/APP/EG composite. However, the EVA/MCAPP/PUEG system can still pass a UL-94 V-0rating after being treated with 70 °C water for 168 h, indicating excellent water resistance. Because of good interfacial adhesion between fillers and the EVA matrix, the EVA/MCAPP/PUEG composite shows better mechanical and dynamic mechanical thermal properties than those of the EVA/APP/EG composite. Moreover, the electrical property and the combustion behavior of EVA composites are investigated. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24612369 [article] Preparation of polyurethane microencapsulated expandable graphite, and its application in ethylene vinyl acetate copolymer containing silica - gel microencapsulated ammonium polyphosphate [texte imprimé] / Bibo Wang, Auteur ; Shuang Hu, Auteur ; Kuimin Zhao, Auteur . - 2011 . - pp. 11476-11484. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 20 (Octobre 2011) . - pp. 11476-11484 Mots-clés : Silica  gel  Preparation Résumé : Polyurethane miaoencapsulated expandable graphite (PUEG) is prepared by in situ polymerization, and its structure is characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The results indicated PUEG is successfully prepared. The microencapsulated expandable graphite (EG) leads to an increase in the thermal stability and the expanded volume. The research compares the influence of an EG/ ammonium polyphosphate (APP)/ethylene vinyl acetate copolymer (EVA) system and a PUEG/silica-gel microencapsulated ammonium polyphosphate (MCAPP)/EVA system on the flame retardancy and mechanical properties. The results indicated that EVA/MCAPP/PUEG composite possesses the same LOI value and UL-94 rating as those of EVA/APP/EG composite. However, the EVA/MCAPP/PUEG system can still pass a UL-94 V-0rating after being treated with 70 °C water for 168 h, indicating excellent water resistance. Because of good interfacial adhesion between fillers and the EVA matrix, the EVA/MCAPP/PUEG composite shows better mechanical and dynamic mechanical thermal properties than those of the EVA/APP/EG composite. Moreover, the electrical property and the combustion behavior of EVA composites are investigated. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24612369

The impact of metal oxides on the combustion behavior of ethylene – vinyl acetate coploymers containing an intumenscent flame retardant / Lei Wang in Industrial & engineering chemistry research, Vol. 51 N° 23 (Juin 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 23 (Juin 2012) . - pp. 7884-7890 Titre : The impact of metal oxides on the combustion behavior of ethylene – vinyl acetate coploymers containing an intumenscent flame retardant Type de document : texte imprimé Auteurs : Lei Wang, Auteur ; Wei, Yang, Auteur ; Bibo Wang, Auteur Année de publication : 2012 Article en page(s) : pp. 7884-7890 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Flame  retardant  Combustion Résumé : The objective of this work was to compare the flame retardancy of intumescent flame retardant ethylene-vinyl acetate (EVA/IFR) composites containing different metal oxides including lanthanide oxide, iron oxide, the mixture of iron oxide and lanthanide oxide, and lanthanum ferrite nanocrystalline (LaFeO3). A novel compound containing iron and lanthanum, LaFeO3 was successfully prepared. The EVA/IFR composites with these different coadditives were then fabricated through a melt blending process. Thermogravimetric analysis data showed that these different coadditives could increase the char residue formation. Cone calorimeter results revealed that these different coadditives and IFR could dearly change the decomposition behavior of EVA and form a char layer on the surface of the composites, consequently resulting in efficient reduction of the flammability parameters, such as heat release rate, total heat release, average mass loss rate, average smoke extinction area, and so on. Moreover, significant improvements were obtained in limited oxygen index and Underwriters Laboratories 94 ratings. Among all of the samples, the fire risk of EVA/IFR/LaFeO3 system was the lowest. The residue characterization demonstrated that LaFeO3 could promote the formation of the homogeneous and compact intumescent char layer. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25990302 [article] The impact of metal oxides on the combustion behavior of ethylene – vinyl acetate coploymers containing an intumenscent flame retardant [texte imprimé] / Lei Wang, Auteur ; Wei, Yang, Auteur ; Bibo Wang, Auteur . - 2012 . - pp. 7884-7890. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 23 (Juin 2012) . - pp. 7884-7890 Mots-clés : Flame  retardant  Combustion Résumé : The objective of this work was to compare the flame retardancy of intumescent flame retardant ethylene-vinyl acetate (EVA/IFR) composites containing different metal oxides including lanthanide oxide, iron oxide, the mixture of iron oxide and lanthanide oxide, and lanthanum ferrite nanocrystalline (LaFeO3). A novel compound containing iron and lanthanum, LaFeO3 was successfully prepared. The EVA/IFR composites with these different coadditives were then fabricated through a melt blending process. Thermogravimetric analysis data showed that these different coadditives could increase the char residue formation. Cone calorimeter results revealed that these different coadditives and IFR could dearly change the decomposition behavior of EVA and form a char layer on the surface of the composites, consequently resulting in efficient reduction of the flammability parameters, such as heat release rate, total heat release, average mass loss rate, average smoke extinction area, and so on. Moreover, significant improvements were obtained in limited oxygen index and Underwriters Laboratories 94 ratings. Among all of the samples, the fire risk of EVA/IFR/LaFeO3 system was the lowest. The residue characterization demonstrated that LaFeO3 could promote the formation of the homogeneous and compact intumescent char layer. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25990302