The study of thermophysical properties of rubber and plastic household waste to determine the temperature conditions of cryoprocessing

Abstract The effect of cryogenic treatment on the thermal characteristics emerged from the operation of automobile tires and plastic bottles of commercial beverages. Automobile tires manufactured according to the state standard “GOST 4754-97” (ISO 1043-1:2001 “Plastics – Symbols and abbreviated terms – Part 1: Basic polymers and their special characteristics”; ISO 11469:2000 “Plastics – Generic identification and marking of plastics products”; ISO 472:1999 “Plastics – Vocabulary”) and bottles made of polyethylene terephthalate for food liquids according to the state standard “GOST R 52789-2007” (ECE/TRANS/WP.29/GRB/2019/5 “Proposal for amendments to UN Regulation No. 30”) were used as the test samples. Temperature range of investigation was 95–300 K. The thermal conductivity measurements were carried out by a relative stationary heat flow method and the temperature change inside the samples with different forms on heating after cooling to nitrogen temperature. The results obtained are in good agreement with the literature data.