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Fire-Resistant Coatings, Obtained by Layer-by-Layer Assembly, in the System of Silicic Acid Gel – Diammonium Hydrogen Phosphate – Urea

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Abstract:

The paper discusses the influence of flame retardant compositions obtained in the system of silicic acid sol (SiO2 sol) – flame retardants on the fire retardant properties of thin dense cotton fabrics and low density voluminous tapestry fabrics. The need to develop the optimal composition of a fire-retardant composition for a specific fabric, or to unify it for two main groups of fabric: thin and bulky low-density ones, is substantiated. Experimental coatings were obtained by applying SiO2 sol, which was obtained by the reaction between liquid glass and acetic acid, followed by application of flame retardant solutions (diammonium hydrogen phosphate (DAHP) and urea) by spraying or by the bath method. As a result of the optimization, using the central composite uniform rotatable plan of the second order, it was established that the main effect of the flame retardant is exerted by diammonium hydrogen phosphate (DAHP). The content or concentration of urea depends on the concentration of DAHP used: if diluted DAHP solutions (9–10 %) are used, trace amounts of urea (0–0.5 %) must be added. In the case of using a concentrated DAHP solution (18–20 %), the concentration of the urea solution should also be increased to 8–10 %.

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Info:

Periodical:

Key Engineering Materials (Volume 954)

Pages:

157-165

DOI:

https://doi.org/10.4028/p-S5rvlA

Citation:

Cite this paper

Online since:

August 2023

Authors:

Olga Skorodumova*, Andrey Sharshanov, Olena Chebotaryova, Viacheslav Kurepin, Konstantinos Sotiriadis

Keywords:

Cotton-Containing Textile Materials, Fire Resistance, Fire-Resistant Coatings, Layer-by-Layer Assembly, Liquid Glass, SiO2 Sols, Sol-Gel Method

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* - Corresponding Author

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