In this work we study influence of compatibilizers on tensile and rheological properties of new Silyl terminated polymer/Epoxy two component systems. In early works about that kind systems most of attention is devoted to polymers used (mainly silyl terminated polyether), while less attention is paid to catalysts, compatibilizers and additives [1-2]. One of the most important system elements are compatibilizers, while in this particular system silyl terminated polyether cannot react with epoxy groups directly. This work indicates that compatibilizer has a crucial meaning to reach material potential mechanical properties.

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Two component model systems from Silyl-terminated polyether (SAX 520) and epoxy resin (D.E.R. 331) can produce higher mechanical properties than each system individually. This work is dedicated to explore two components (SAX 520/D.E.R. 331) systems and represent their benefits comparing to neat SAX 520 based system. Work shows that compositions with epoxy resin not only improves material mechanical properties, but also its stability after aging, workability time and adhesion on various substrates.

Thiokol is one of the oldest and the most expensive prepolymers which also is used for insulating glass application. One of potential alternatives is modified polyether polyol, but it has poor ultraviolet light stability. This work is dedicated to synthesized alternative prepolymers and development of two component systems for insulating glass sealant application. By subjecting these particular systems to temperature, water and ultraviolet light resistance tests, it is concluded that in respect to water and UV-light resistance the systems of modified prepolymers are even better than the system with thiokol prepolymer.

The current research is devoted to the investigation of the influence of a secondary amine compatibilizer and customized additive package on the tensile, rheological and adhesive properties of a Silyl-terminated polyether (SIL)/Epoxy resin (EP) model and completed two-component systems. A SIL/EP model and completed two-component systems were developed over a broad range of the both pre-polymer ratios (90/10–30/70 wt.-to-wt%). Additive packages of the components A and B were designed to prevent premature polycondensation of the respective pre-polymers (including suitable catalysts for each of the pre-polymers, as well as vinyltrimetoxysilane as a drying agent for moisture control), to ensure easy processing and stable performance of the system. Results of the investigation testify that the values of the tensile strength and Shore-A hardness of the compatibilized systems are higher in comparison to unmodified ones. In the presence of the additive package, a further improvement of tensile strength and tensile strain values is observed for SIL-rich compositions (SIL content above 70 wt%), whereas at lower SIL concentrations, the reinforcing effect is considerably reduced. In respects to adhesion properties, the highest values to a broad range of substrates with different surface polarities are observed at the SIL/EP range from 80/20 to 50/50 wt.-to-wt%.

Abstract. Modified silyl-terminated polyether polymer (MS Polymer) was blended with bisphenol A diglycidyl ether (DGEBPA) epoxy at MS Polymer/epoxy ratio from 30/70 to 70/30. MS Polymer/epoxy systems were examined for two-component adhesive formulation with additional fillers. Applicability of the MS Polymer/epoxy system at the ratio of the components 60/40 is demonstrated for the development of adhesive formulation. Rheological analysis of the components A and B shows suitable viscosity values for development of twocomponent adhesives formulation. Curing dynamics as well as tensile stress-strain properties and Shore A hardness of the chosen adhesive formulation are reasonable for the development of MS Polymer/epoxy type adhesive.