A phosphorus-containing PET ionomer: from ionic aggregates to flame retardance and restricted melt-dripping

2014 ◽  
Vol 5 (6) ◽  
pp. 1982-1991 ◽  
Author(s):  
Yi Zhang ◽  
Li Chen ◽  
Jing-Jing Zhao ◽  
Hong-Bing Chen ◽  
Ming-Xin He ◽  
...  
Keyword(s):  
Flame Retardance ◽  
Phosphorus Containing

Flame retardance of epoxy acrylate resin modified with phosphorus containing compounds

2004 ◽  
Vol 51 (3) ◽  
pp. 213-219 ◽  
Author(s):  
M. Vezir Kahraman ◽  
Nilhan Kayaman-Apohan ◽  
Nergis Arsu ◽  
Atilla Güngör
Keyword(s):  
Flame Retardance ◽  
Epoxy Acrylate ◽  
Phosphorus Containing ◽  
Acrylate Resin ◽  
Epoxy Acrylate Resin

An XPS Investigation of Thermal Degradation and Charring Processes for Polymers in the Condensed Phase. I

1995 ◽  
Vol 13 (4) ◽  
pp. 261-280 ◽  
Author(s):  
Jianqi Wang ◽  
Hongbin Tu ◽  
QinJun Jiang
Keyword(s):  
Thermal Degradation ◽  
Condensed Phase ◽  
Ethylene Vinyl Acetate ◽  
Model Systems ◽  
Flame Retardance ◽  
Clear Cut ◽  
Phosphorus Containing ◽  
Valence Bands ◽  
Thermal Analysis Techniques ◽  
Eva Copolymers

Crosslinking and charring in the condensed phase of polymers during heating, processing, and/or burning are of central importance in their flame retardance and smoke suppression and in formulating polymeric compos ites. Combining with thermal analysis techniques (TGA, DSC), ethylene-vinyl acetate (EVA) copolymers and polyethylenes (HDPE, LDPE) with/without inor ganic phosphorus-containing additives, were selected as model systems for XPS studies of the charring process. A new parameter, Tgr, the transition tempera ture from mesophase to graphitic structure (graphite-like structure, GLS) of the char has been well-defined and determined by combination of core levels and valence bands in XPS. The reason for Tgr to be selected as a likely supplemen tary parameter for characterizing polymer charring in condensed phase is two fold : 1) a clear-cut phase transition; 2) at which temperature a highly cross linked network results. A special emphasis in the paper has been given to the roles of the oxygen atoms either introduced from an adventitious atmosphere or inherent Ac group itself. Along this line some features in both thermal degradation and flame retardance of polymers have been rationalized in terms of transition temperature Tgr.

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