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Zhu SW, Shi WF (2004) Polymer International 53(3), 266-271.
Date: 2011-08-16   Author: SKLFS   Source: WOS
 

Zhu SW, Shi WF (2004) Synthesis, characterization and flame retardancy of methacrylated phosphate/diphosphate. Polymer International 53(3), 266-271. [In English]

Web link: http://dx.doi.org/10.1002/pi.1263

Keywords:

flame-retardant; phosphate; thermostability; combustion behaviour; methyl-methacrylate; resins; phosphorus; phosphate; coatings;

Abstract: Methacrylated phosphate (MAP) and diphosphate (MADP) and were synthesized using diethylphosphoric acid and glycidyl methacrylate, and were characterized by FTIR, NMR and elemental analysis. The thermostability and combustion behaviours of UV-cured MAP, MADP and their blend films were investigated by thermogravimetric analysis, limiting oxygen index (LOI) and cone calorimeter tests. The results obtained have shown that the samples containing a higher percentage of MAP exhibit relatively lower thermostability at lower temperatures while higher thermostability at elevated temperatures and more char was formed compared with those containing lower percentage of MAP. The average heat release rate (HRR), the smoke extinction area (SEA) and the total smoke production (TSP) during combustion decreased by increasing the MPA content in the films. The LOI values increased from 26.8 to 28.5 by increasing the content of MADP, which depended on the increasing gel content of the UV-cured films. Compared with MADP, MAP was better in a real fire as it displayed lower HRR, SEA and TSP values, although the LOI was lower than that of MADP. These new compounds can effectively improve flame retardancy if used as components in UV-curing formulations. (C) 2004 Society of Chemical Industry.

 
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