KENGAYTIRILGAN VERMIKULIT BILAN MODIFIKATSIYALANGAN AKRIL-STIROL POLIMER QOPLAMALARDA ISSIQLIK O‘TKAZUVCHANLIK VA TERMIK QARSHILIKNING EKSPERIMENTAL TADQIQI
Keywords:
heat-resistant coating, acrylic-styrene copolymer, expanded vermiculite, thermal conductivity, thermal resistance, polymer composite, thermal insulation, thermophysical properties.Abstract
This article analyzes the thermal conductivity and thermal resistance
coefficients of heat-resistant polymer composite coatings of the VAMJ-1, VPSJ-2,
and VASJ-4 grades, obtained on the basis of an acrylic-styrene copolymer, using
experimental results. The study elucidates the mechanisms of structural restriction of
heat flow and energy transfer in multicomponent coating systems containing
expanded vermiculite, liquid glass, aluminum hydroxide, Portland cement, and glass
fiber. The results obtained using the XND-2-3030C apparatus showed that, in most
cases, an increase in the vermiculite content leads to a decrease in thermal
conductivity, while thermal resistance increases. The lowest thermal conductivity was
observed in the VAMJ-1 sample containing 40% vermiculite. The obtained results
confirm the importance of structural synergy between the mineral filler and the
polymer matrix in optimizing the composition of polymer coatings with thermal
protective properties.
