Optimization of fire-resistant and fire-thermal protective properties of intumescent composites using mathematical experimental planning

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Abstract

Using the method of mathematical planning of the experiment, the formulation of a foaming polymer composite material based on an ethylene-vinyl acetate thermoplastic binder was optimized. To determine the dependence of the combustibility characteristics (maximum temperature increment and weight loss) of the composite on the content of components in its gas-coke-forming system, a regression model of a full factorial experiment was used using the completed matrix of the orthogonal central-composition plan (OCCP) of the two-factor model of the 2nd order experiment. By adjusting the composition of the gas-coke-forming system, consisting of ammonium phosphate, amine, and carbonate mineral, a slow-burning material with improved thermal insulation ability was obtained. For the studied composition, it was found that the one of the factors causing a decrease in combustibility and an increase in the fire resistance limit (up to 104 min) is the formation of a foamed mechanically strong coke-like structure, stable in a wide temperature range (300–800 C).

About the authors

Valentina V. Bogdanova

Research Institute for Physical Chemical Problems of the Belarusian State University

Author for correspondence.
Email: bogdanova@bsu.by

Doctor of Science in chemistry, professor, head of laboratory

Belarus, Minsk

Olga I. Kobets

Research Institute for Physical Chemical Problems of the Belarusian State University

Email: kobetsoi@mail.ru

Candidate of Science in chemistry, leading research scientist

Belarus, Minsk

Alexander S. Platonov

State Educational Establishment “University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus”

Email: alexpltn@mail.ru

Candidate of Science in physics and mathematics, associate professor, leading research scientist, Department of Scientific and Innovation Activity

Belarus, Minsk

Anna B. Perevoznikova

Educational Institution “Belarusian State Pedagogical University named after M. Tank”

Email: a.b.perevoznikova@gmail.com

lecturer

Belarus, Minsk

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