Investigation of the Influence of the Synthesized Iron-Carbide Mixture on the Adhesive and Mechanical Properties of Epoxy Composites for Parts of Transport Machines

Abstract

Epoxy-diane oligomer ED-20, hardener polyethylene polyamine, and micro dispersed particles of iron-carbide mixture synthesized by high-voltage electric discharge have been used for the formation of Composite Materials (CMs) and protective coatings for the transport industry. The dependence of the adhesive, physical, and mechanical properties and residual stresses of epoxy composites on the content of micro dispersed powders has been studied in this paper. It has been proved that for the formation of a composite material or protective coating with improved adhesion and cohesion properties, the optimal content of particles is 0.5 wt.% per 100 wt.% of epoxy oligomer ED-20. Such materials are characterized by increased mechanical strength and the ability to resist static and shock loads, as their properties are significantly increased. The obtained results of the experimental studies of the physical and mechanical properties of composite materials correlate with the studied results of adhesive characteristics, which indicate their veracity.

Evaluation of the Effect of Tightening Torque on Single-lap Bolted Joints

“…Figure 1 shows the elasto-plastic stress-strain curve behavior of the steel. Such materials are characterized by increased mechanical strength and the ability to resist static and shock [11]. The mechanical characteristics (Table I) of the base metal such as yield strength σe, ultimate tensile strength σu, deformation ε, and Young's modulus E were obtained from the curve in Figure 1.…”

“…We notice that the optimal results are for the tightening torques of 25 and 30Nm. This is because the tightening torque mainly influences the elastic phase before sliding and the maximum level of load [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The tightening torque has been correctly introduced by applying local compression to the substrate and by pulling the bolt, thus allowing the prestressing forces to be introduced into the substrates [17].…”

Sustainable Transport Reliability: Exploring the Creep of Eco-Friendly Polymer Nanocomposites

“…The authors [10][11][12][13][14][15] have demonstrated that using polymer CMs substantially enhances the physical and mechanical properties and the wear resistance of transportation components exposed to aggressive environments. Consequently, this significantly extends the service life of mechanisms and machines, contributing to their reliability [16][17][18][19][20]. Based on these findings, it can be affirmed that the investigation of the effects of static loads on the alteration of the physical and mechanical properties of materials during operation, while considering environmental safety concerns, stands as a critical objective in contemporary polymer materials science.…”

Corrosion-Resistant Epoxy Coatings Filled with Nanoparticles of Vegetable Origin to Protect Water Vehicles

“…However, zinc phosphate is a scarce material compared to chromate [15,16]. At the same time, it has been proven [17][18][19] that the use of nitrites can prevent the pitting corrosion of steel. Compared to other heavy metal corrosion ions-05025-2 inhibitors, such as (CrO4 2 − , WO4 2 − , MoO4 2 − , Cr2O7 2 ), nitrites have less negative environmental impact.…”