Surface modification of calcite and investigation of the effect of different mineral filler mixtures on dispersion and thermal properties of polymer

Various mineral fillers such as calcite and talc are natural inorganic materials added to the system as additives in plastics. However, there is a difference in surface tension and polarity between the organic material polymer and the inorganic mineral, and for this reason, minerals must be coated with various chemical agents (such as fatty acids) in order to obtain better physical values. On the other hand, there are two reasons for adding natural mineral additives into plastic raw materials in the plastics industry: to increase processing properties and to modify certain properties in the final product and to reduce material costs. In this thesis, it is aimed to perform the surface modification of micronized calcite in a stirred ball mill and to reveal the effect of different mineral filler mixtures on the dispersion and mechanical properties in the polymer. For this purpose, the mixed ball mill will be used for fine and very fine grinding as well as surface coating. Composite materials will be produced by using different fillers (calcite, talc, etc.) and additive ratios and different polymers (such as PP, PE). The performances of the produced composites will be tested and appropriate usage areas will be suggested.