Formation of polymer materials with increased thermal stability

Due to its versatility, low cost and relative environmental safety, polyvinyl chloride be-longs to the most widely used group of thermoplastics. The key method in the production of composites based on polyvinyl chloride is the introduction of additives that improve the required characteristics. The expansion of the scope of polymeric materials leads to the development of composites with increased thermal stability. Achieving this goal with the help of phosphorus-containing and halogen-containing additives is not always justified and possible. Mineral fillers do not lose their relevance in the production of composites with increased thermal stability. Sustainable development contributes to the need for certain reasonable decisions to ensure the safety of our planet. One of these is the involvement of waste in the production cycle. The main factor in using fillers is to ensure a uniform distribution of particles, which is achievedby reducing the particle size of a filler, among other things. The paper shows the potential use of vermiculite and eggshell as fillers for polymers with increased thermal stability. Formulations of PVC compositions containing the listed fillers have been compiled. The synergism of the effect of these additives on the thermoanalytical characteristics of PVC compositions has been studied. Their joint influence of compounds with their content on the rheology has been determined.