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[Display omitted] • Sustainable Recycling • Polymer fiber reinforced composite materials. • Thermal analysis • Mechanical testing • ANOVA Analysis • Python AI and DL studies • SEM characterization The sustainable processing of polymeric waste is required innovation. In this article, polypropylene (PP)- polyethylene terephthalate fiber (PETF) composite materials were fabricated according to the International Organization for Standardization (ISO 9001–2 and 2008) for commercial manufacturing using extrusion and injection molding. The variations of 0, 10, 30, and 40 % of PETF loadings were utilized for mechanical properties' optimization. The results indicate that tensile strength, strain, and young's modulus of elasticity were in the range of 22–25 MPa, 3–5 % and 870–1167 MPa. Correspondingly, the values of flexural strength, strain and modulus constant were in the range of 39–40 MPa, 9–12 % and 1909–2140 MPa, respectively. The impact energies were in the range of 2.6–3.4 kJ/m2. Thermally, the PP-PETF composites were found stable. The scanning electron microscope characterization, presence of induced micro defects, optimum flake structure, analysis of variance, deep learning, and artificial intelligence studies predict the utilization of PP-PETF composites for manufacturing of panels and sheets regarding static loading bearing applications. The reported technical strategies can be utilized as a reference processing technique for industrial manufacturing of PP-PETF based recycled composite products. [ABSTRACT FROM AUTHOR]

Abstract Oil spills are common issue in the oil and gas industry. According to OECD statistics a world production of crude oil is slowly increasing since 2010 [1]. Meanwhile, according to ITOPF, a number of spill incidents (greater than 7 tons) from tankers is decreasing [2]. Efficient recycling of vulcanized rubber materials is in up-to-date agenda of the European Union. Current paper discusses a suitability of devulcanized crumb rubber for oil spills remediation. The significance of the topic comprises an extensive application of crumb rubber and devulcanized crumb rubber for oil spillage remediation with further use of rubber-oil mass in road construction industry. In order to increase an efficiency of oil sorption an application of impact disintegrator for DCR-milling is suggested. [ABSTRACT FROM AUTHOR]

The design of earth cutting and machining tools generally requires the application of several types of materials with different wear resistance: (1) base metal with low wear resistance, (2) extremely resistant cutting inserts made of ceramics (or even diamond), cemented carbides or cermets and (3) thick coatings with average wear resistance to protect base metal or thin (PVD or CVD) coatings to improve wear resistance of inserts. The production of such tools is complicated, tedious and not very efficient (tool life depends on the interface bonding, brazed inserts can be severely damaged after impact, base material wear, etc.). The novel approach is to exclude the steps of brazing or coating and to produce steels or composites with similar wear resistance as that of inserts or coatings using the promising approach of additive manufacturing (AM i.e. 3D printing). Moreover, benefits of AM like near net shape part building with complex internal features (internal cooling channels) are desired for cutting tools. The aim of the current research is to assess novel commercially available 3D printed steels and composites in several relevant tribological conditions where these materials could be applied. The comparison with conventional Hardox 400 wear resistant steel and AISI 316 stainless steel is provided. Results report significant improvement in the wear resistance of AM produced steels and composites against reference materials. The performance of 3D printed materials lie between WC- based bulk cemented carbides and hardfacings. The characteristic features of wear mechanisms are presented and discussion is supported by Scanning Electron Microscope images. • It is possible to 3D print wear resistant materials with high content of homogeneously dispersed carbides. • The additive manufactured Vibenite steels and composites show low wear rate in comparison to Hardox 400 and AISI 316. • The performance of 3D printed materials lie between WC- based bulk cemented carbides and hardfacings. • The effect of third body and mechanically mixed layer formation during test conditions are discussed. [ABSTRACT FROM AUTHOR]