NDLI: Thermal degradation and flame retardancy of epoxy resins containing intumescent flame retardant

Content Provider	Springer Nature Link
Author	Gao, M. Wu, W. Yan, Y.
Copyright Year	2009
Abstract	Pentaerythritol diphosphonate melamine-urea-formaldehyde resin salt, a novel cheap macromolecular intumescent flame retardants (IFR), was synthesized, and its structure was a caged bicyclic macromolecule containing phosphorus characterized by IR. Epoxy resins (EP) were modified with IFR to get the flame retardant EP, whose flammability and burning behavior were characterized by UL 94 and limiting oxygen index (LOI). 25 mass% of IFR were doped into EP to get 27.2 of LOI and UL 94 V-0.The thermal properties of epoxy resins containing IFR were investigated with thermogravimetry (TG) and differential thermogravimetry (DTG). Activation energy for the decomposition of samples was obtained using Kissinger equation. The resultant data show that for EP containing IFR, compared with EP, IFR decreased mass loss, thermal stability and R $_{max}$, increased the char yield. The activation energy for the decomposition of EP is 230.4 kJ mol$^{−1}$ while it becomes 193.8 kJ mol$^{−1}$ for EP containing IFR, decreased by 36.6 kJ mol$^{−1}$, which shows that IFR can catalyze decomposition and carbonization of EP.
Starting Page	605
Ending Page	608
Page Count	4
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	95
Issue Number	2
e-ISSN	15728943
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-03-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	degradation epoxy resins flame retardant synthesis TG Measurement Science, Instrumentation Inorganic Chemistry Polymer Sciences Analytical Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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