Hydrophilized unsaturated polyester resin based on a two-component system of sulfur and cement

    Machines. Technologies. Materials., Vol. 14 (2020), Issue 6, pg(s) 255-257

    This work develops a multicomponent system comprising unsaturated polyester resin (UPER) hydrophilizing a two-component system of sulfate-resistant cement (SC) and sulfur, diluent water and a redox system. The hydrophilized unsaturated polyester resin (HUPER) so obtained can be used as a basis for polymer-silicate composites with good strength properties, precise embossed printing on the surface of various molds, and good visual characteristics. Polymer-silicate compositions with low and high content of SC were selected, and the constant amount of SC in the two groups obtained corresponded to a gradual change in sulfur content. Time kinetic dependencies of the cross-linking process of unsaturated polyester at a given amount of redox system were monitored. Reproducibility of results for different polymer compositions was achieved thereby enabling a possibility to predict them.



    Machines. Technologies. Materials., Vol. 10 (2016), Issue 8, pg(s) 41-44

    This work is a continuation of the HUPER development, as in this study hydrophilization was performed by different types of cement (grey cement and medical cement). It was established that alkaline hydroxides in the cement “milk” composition traditionally perform the preselected role of a hydrophilizer. Water was used as a second dispersing component, which can not only homogenize the composition of the prepared composite material. A third component was introduced (water glass), which was studied due to its dispersing role towards the resin/cement/water system. Mechanical strength characteristics (mostly impact characteristics) characterizing the shape, dimensions and integrity of the operational product were studied based on the obtained composition in various proportions of components.