Development of Epoxy‐Polyester Composite with Improved Thermophysical Properties for Restoration of Details of Sea and River Transport

Abstract

The results of the experimental investigations of the optimization of the content of the polyester resin in the epoxy binder are shown in the work. It was determined that composite with concentration of the polyester (q = 10 mas.fr.) was characterized by the maximal values of the thermophysical properties. The Martens thermal resistance temperature, the linear shrinkage, the thermal coefficient of linear expansion, and the glass transition temperature of the epoxy-polyester matrix were investigated. It was found that introducing the polyester resin into the epoxy oligomer in quantity of q = 10 mas.fr. leads to improving the Martens thermal resistance of the material to the T = 352 K and decreasing the linear shrinkage to the Δl = 0.06%. The nonlinear dependence of the TCLE on the temperature was confirmed, and the tendency of changes in their values, depending on the content of polyester resin, was defined. The dilatometric curves were analyzed, and the glass transition temperature of developed epoxy-polyester matrix was determined at the level Tс = 318 K.

Development of Epoxy-polyester Nanocomposite Materials with Improved Physical and Mechanical Properties for Increasing Transport Vehicle Reliability

“…leads to a deterioration of the elasticity modulus. Taking into account the chemical composition of the filler (SiO2), it can be assumed that it is not active before interaction with -OH, -CH groups of the binder and supersaturation of this additive leads to a decrease in the elasticity parameters of the developed CMs [18,21].…”

“…Nowadays, polymers are the most widely used structural materials that are replacing metals and alloys [11][12][13]. The use of polymeric materials instead of metals increases the cost-effectiveness, reduces manufacturing costs and the weight of parts, with saving the physical-mechanical and thermophysical properties [14][15][16][17][18]. In this direction it was relevant to use polymeric materials based on epoxy and polyester components.…”

Thermal Properties of Polyester/Epoxy Blend

“…The low viscosity of UP resins in the uncured state is a favorable property due to the resin is processed and controlled with no need to equip of high pressure. Many of techniques to toughness's enhancement are built on the thermosetting polymers such as epoxy [11][12][13][14]. However, modification of UP resin with epoxy (EP) improved its mechanical properties with enhancement in the thermal properties.…”

The Use of Complex Additives for the Formation of Corrosion- and Wear-Resistant Epoxy Composites

“…At the same time, the introduction of additives in the epoxy binder improves the technological properties of polymers and also significantly affects the physical and mechanical properties, anticorrosion properties, and wear resistance of the equipment. erefore, a rational combination of components in the epoxy binder will provide the necessary complex of the protective coatings properties in specific operational conditions [6][7][8][9][10][11].…”

“…e analysis of works [6][7][8][9][10][11][12][13][14][15][16][17][18] allows to state that epoxy composites are characterized by chemical stability and wear resistance in different operational conditions, wherein the adhesive strength of the polymers to the base and the cohesive strength of the material are main criteria that provide protective properties for a long time of operation. As it is known, acid solutions are the most aggressive medium for epoxy composites.…”