The choice of pigments for paints and varnishes on epoxy binder

Building Materials

The object of research is decorative polymer composites. Epoxy resin ED-16, which was cured with polyethylenepolyamine, was used as a binder for polymer composites. Organic and inorganic pigments were used to color the compositions. The aim of the work is to experimentally substantiate the techniques and methods for obtaining effective anti-corrosion protective materials for decorative purposes based on epoxy binders. Method. The study of structural changes in paints and varnishes was carried out by IR spectroscopy, based on the absorption of individual functional groups in the IR region. Determination of tensile strength and relative elongation of epoxy composites were established using physical and mechanical methods. Results. Using infrared spectroscopy methods, it was found that the degree of polymerization of paint and varnish polymeric materials is significantly influenced by the nature of the pigment used. The dependences of the change in the tensile strength and relative elongation on the type of pigment and its content were experimentally established. re composite materials based on an epoxy binder with various pigments. The purpose of the research is to substantiate the proposed methodology for analyzing the color change of protective coatings and to evaluate the decorative properties of epoxy composites used in marine climate conditions.