The paper aims to investigate the behavior of Arboblend V2 Nature biopolymer samples covered with three ceramic powders, Amdry 6420 (Cr2O3), Metco 143 (ZrO2 18TiO2 10Y2O3) and Metco 136F (Cr2O3-xSiO2-yTiO2). The coated samples were obtained by injection molding, and the micropowder deposition was achieved by using the Atmospheric Plasma Spray (APS) method, with varied thickness layers. The present study will describe the results for nine, seven and five-layer deposition. It was observed that with the increase of the number of deposited layers the surface quality and mechanical/thermal characteristics such as wear and hardness are also increased. The followed determinations were conducted: the adhesion strength and hardness on a microscopic scale by micro-indentation. The samples’ crystalline structure as well as the presence of the Cr2O3 compound significantly influenced the micro-indentation and scratch analysis responses. The novelty of this study is given by itself the coating of the Arboblend V2 Nature biopolymer (as base material), with ceramic microparticles as the micropowder coating material. Following the under-taken study, the increase in the mechanica and tribological characteristics of the samples recommend all three coated biopolymer samples as suitable for operating in harsh conditions, such as the automotive industry, in order to replace plastic materials.
The need to find materials for various common objects and more reliable and less expensive production is a major concern of society and scientists in recent decades, due to the dramatic decline in available stocks of materials from low renewable resources and massive pollution caused by the production of cement, brick, plastics or other similar products. In this sense, the use of biodegradable plastics is a more than the satisfactory alternative. However, in order to grow their performance, they constantly need to be improved, so composite materials based on biodegradable or recyclable polymers have started to be used frequently as a viable alternative. The present manuscript reveals the mechanical behavior of such composite material obtained by coating Arboblend V2 Nature granules with silver nanoparticles (AgNPs). The coating is intended to improve the antibacterial activity of the base material. The obtained results underlined the fact that with the incorporation of AgNPs in the polymer mass, the mechanical performances (tensile strength, bending strength, elongation, modulus of elasticity) of the material decrease visibly. Thus, the possibility of use of the parts in applications that involve exposure to pulling or bending is quite low, but can successfully replace other biodegradable/non-biodegradable polymeric materials that have metal particles in their structure and which do not present antibacterial action.
The present study aims to perform a comparative analysis of the technological parameters influence on the output parameters for two biodegradable polymeric materials, Arbofill Fichte and Arboblend V2 Nature. The varied input parameters during abrasive water jet cuuting (AWJ) were water jet pressure, traverse speed and abrasive material flow. The quantitative and qualitative output parameters proposed are the amount of material removed (MR) and the inclination angle - α° of the resulted surfaces. The measured MR and α° values highlighted the fact that they fall within the admissible parameters, so that the obtained parts by cutting the Arbofill Fichte and Arboblend V2 Nature samples can be used in industrial applications that require this type of processing and more. Was also achieved the optimization of the technological parameters used for processing according to the next criteria: minimum inclination angle and minimum amount of material removed.
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