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Registration Number

0217U003967, 0117U003208 , R & D reports

Title

The influence of nanoclays on the mechanisms of chemical interactions within fire-resistant intumescent systems

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Head

Vakhitova Liubov,

Registration Date

31-10-2017

Organization

LM.Litvinenko Institute of Physical Organic and Coal Chemistry

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The purpose of the study is to study the formation of nanocomposites of organoclay with a polymer matrix and chemical transformations of the components of the intumescent system under high-temperature conditions. A procedure has been developed, synthesis and identification of nanocomposites based on ethylene-vinyl acetate copolymers and styrene with isobutyl methacrylate and organomodified nanoclay have been carried out. General changes in the physico-chemical characteristics of the polymer during the transformation into a nanocomposite have been established. The mechanism of chemical transformations between the components of the intumescent system has been detailed. The presence of aminolysis between phosphates and amines has been proved to form phosphamide compounds, which ensure the formation of a thermostable char layer. It has been established that the positive effect of organomodified nanoclay is, first of all, in the catalysis of the destruction of ammonium polyphosphate with preservation of the polymer structure and suppression of the thermal degradation of the copolymer with decreasing of combustible products of thermolysis. The practical significance of the work lies in the possibility of creating a formulation of a nanostructured intumescent system with nanoclay by forming nanocomposites "polymer matrix-nanoclay" in situ.

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Бессарабов В.І.
Таран Н. А.

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2020-04-02