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Preparation and characterization of flame-retardant aluminum hypophosphite/Poly(Vinyl Alcohol) composite / Bihe Yuan in Industrial & engineering chemistry research, Vol. 51 N° 43 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 43 (Octobre 2012) . - pp. 14065-14075 Titre : Preparation and characterization of flame-retardant aluminum hypophosphite/Poly(Vinyl Alcohol) composite Type de document : texte imprimé Auteurs : Bihe Yuan, Auteur ; Chenlu Bao, Auteur ; Yuqiang Guo, Auteur Année de publication : 2013 Article en page(s) : pp. 14065-14075 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Composite  material  Flame  retardant  Preparation Résumé : Composites based on poly(vinyl alcohol) (PVA) and aluminum hypophosphite (AHP) are prepared by solvent blending. The thermal, mechanical, and crystallinity properties of the composites are studied. AHP remarkably improves the char residue yield during the thermal degradation and combustion of AHP/PVA composites. The flame retardancy of the composites is obviously improved. The increased char which protects underlying PVA from heat and oxygen is one of the key reasons for the improved flame retardancy. The crystallinity of the composites is decreased. The glass transition temperature (Tg) and the storage modulus of the composites are increased. In the composite with 15 wt % AHP, limiting oxygen index (LOI) reaches 28.0%, UL-94 V-0 rating is obtained, Tg is increased by 7 °C, and the storage modulus is increased by 17.2% in comparison with neat PVA. Moreover, AHP/PVA composites keep high transparence and maintain most of the mechanical properties of PVA, which is advantageous for the practical application of the composites. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26593334 [article] Preparation and characterization of flame-retardant aluminum hypophosphite/Poly(Vinyl Alcohol) composite [texte imprimé] / Bihe Yuan, Auteur ; Chenlu Bao, Auteur ; Yuqiang Guo, Auteur . - 2013 . - pp. 14065-14075. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 43 (Octobre 2012) . - pp. 14065-14075 Mots-clés : Composite  material  Flame  retardant  Preparation Résumé : Composites based on poly(vinyl alcohol) (PVA) and aluminum hypophosphite (AHP) are prepared by solvent blending. The thermal, mechanical, and crystallinity properties of the composites are studied. AHP remarkably improves the char residue yield during the thermal degradation and combustion of AHP/PVA composites. The flame retardancy of the composites is obviously improved. The increased char which protects underlying PVA from heat and oxygen is one of the key reasons for the improved flame retardancy. The crystallinity of the composites is decreased. The glass transition temperature (Tg) and the storage modulus of the composites are increased. In the composite with 15 wt % AHP, limiting oxygen index (LOI) reaches 28.0%, UL-94 V-0 rating is obtained, Tg is increased by 7 °C, and the storage modulus is increased by 17.2% in comparison with neat PVA. Moreover, AHP/PVA composites keep high transparence and maintain most of the mechanical properties of PVA, which is advantageous for the practical application of the composites. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26593334