Epoxy Compositions Modified with Ammonium Polyphosphate and Boric Acid

In this work, we investigated polymer compositions based on epoxy resin cured with polyethylene polyamine and containing ammonium polyphosphate and boric acid as a blowing agent and carbonization stimulator. The UL 94 method was used to determine the ability of a material to burn or extinguish after...

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Bibliographic Details
Published in:Key engineering materials 2022-02, Vol.909, p.21-27
Main Authors: Shuklin, Sergey G., Eremina, Marina, Makarova, Lyudmila
Format: Article
Language:English
Subjects:
Acids
Atomic properties
Atomic structure
Blowing agents
Coatings
Composition
Differential thermal analysis
Epoxy resins
Gas formation
Polyamines
Specific heat
Stimulators
Temperature dependence
Weight loss
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Summary:In this work, we investigated polymer compositions based on epoxy resin cured with polyethylene polyamine and containing ammonium polyphosphate and boric acid as a blowing agent and carbonization stimulator. The UL 94 method was used to determine the ability of a material to burn or extinguish after flame treatment. We determined the ability of the material to burn or extinguish when exposed to a gas burner. Weight loss at characteristic temperatures was determined using a Perkin Elmer STA8000 synchronous DTA / TGA analyzer. The dependence of heat capacity on temperature was determined (calorimeter ITS-400). It has been shown that in modified compositions containing ammonium polyphosphate and boric acid, the heat capacity changes without significant jumps, which is due to a quieter flow of gas formation. The structure of intumescent coatings was studied using atomic force microscopy. The study was carried out on a P4-Solver device NT-MTD. Tests of the samples have shown that the addition of boric acid makes it possible to obtain a more ordered structure of the coke foam, an increase in the heat capacity of intumescent coatings.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/p-n42c64