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Ecological Systems and Devices

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Study of the Infl uence of Environmentally Safe Filler – Vermiculite on the Properties of Polyvinyl Chloride Plastics Compounds
Aminova A.F., Zaripov I.I., Stepanov A.A., Zagitova L.I., Mazitova A.K.

The infl uence of natural silicate vermiculite on the characteristics of PVC plastic compounds was studied. It has been
established that vermiculite improves the dielectric characteristics of PVC plastic compound, reduces its fl ammability and
smoke-generating ability. The noticeable effect of vermiculite on reducing smoke generation during smoldering and burning
of PVC plastic compound is due to the foamed coke formation, which promotes PVC plastic surface thermal insulation from
the reverse heat fl ow, slowing down the oxygen diffusion into the condensed phase and the release of combustible substances
into the combustion zone. The prospects of using this fi ller to improve PVC plastic compounds performance characteristics
have been shown.
Keywords: dolomite; fl ammability by oxygen index; maximum optical density of smoke; mineral fi llers; polyvinyl chloride
compositions; thermogravimetric analysis; vermiculite.


DOI: 10.25791/esip.11.2023.1412

Pp. 39-44.

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