Possibilities for predicting the coefficient of thermal expansion of materials based on polyvinyl chloride

The analysis of the prediction of the coefficient of thermal expansion of materials based on polyvinyl chloride is carried out. The relevance of such a prediction is due to the fact that polyvinyl chloride is one of the main polymers used to develop building materials based on polymers. The problem of reducing the coefficient of thermal expansion of polyvinyl chloride by creating blends with heat-resistant polymers with high glass transition temperatures is considered. Among these polymers are polyimides, polyesters, polyether ketones, polysulfides, polyphenylene oxides. The prediction is made using the compatibility criterion developed at the INEOS RAS. The criterion contains such characteristics as the Hildebrand solubility parameter, surface energy, and molar volume of the repeating unit of polymer. Based on this criterion, a decrease in the coefficient of thermal expansion of 52% is shown. The introduction of a mineral filler in the form of calcite in the composition of the mixtures also contributes to a decrease in the CLTE. Experiments and calculations were carried out for wood-polymer composites produced by the domestic company. The value of CLTE when filling with bamboo wood is realized decreases to a greater extent than when filling with coniferous wood.

A.A. ASKADSKII^{1, 2}, Doctor of Sciences (Chemistry) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
C. WANG³, Graduate Student (This email address is being protected from spambots. You need JavaScript enabled to view it.)
E.A. KURSKAYA¹, Candidate of Sciences (Chemistry) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
V.I. KONDRASHCHENKO³, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
T.V. ZHDANOVA², Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)
T.A. MATSEEVICH², Doctor of Sciences (Physics and Mathematics) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

¹ A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS) (28, Vavilova Street, Moscow, 119991, Russian Federation)
² National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)
³ Russian University of Transport (9, Build. 9, Obraztsova Street, 127994, Moscow, Russian Federation)

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