Analysis of the mechanical properties of polymer composites for the production of machine parts used as substitutes for elements obtained from metals

Markowska, O.; Markowski, Tadeusz; Sobczyk, Magdalena

doi:10.14314/polimery.2020.4.8

Cited by 5 publications

(5 citation statements)

References 1 publication

(1 reference statement)

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“…Polymer gears cannot have the same high tolerances as metal gears can have. Polymeric materials are less dimensionally stable compared to steel, which causes dimensional changes due to the temperature and humidity conditions [1,2].…”

Section: Poprawa Jakości Kół Zębatych Otrzymanych Z Materiałów Polimerowych Metodą Wiórkowaniamentioning

confidence: 99%

Quality improvement of gear wheels obtained from polymer materials by shaving process

Markowska

Bulanda

Zajdel³

2021

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The geometric accuracy of gears obtained by injection molding before and after finishing by shaving process has been compared. Significant assumptions in the application of this method to the finishing of polymer gears are presented. There is a clear influence of the applied technology on the dimensional stability improvement of the tested gears rim made of composite PA66 matrix containing 35 wt % glass fibers. The tested gears made of the composite materials used in some drive systems can successfully replace this type of machine elements made of metals.

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Section: Poprawa Jakości Kół Zębatych Otrzymanych Z Materiałów Polimerowych Metodą Wiórkowaniamentioning

confidence: 99%

Quality improvement of gear wheels obtained from polymer materials by shaving process

Markowska

Bulanda

Zajdel³

2021

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“…This type of material is low-cost and available in the required quantity in mechanical engineering. Acceptable results for strength were obtained from studying the composites polyphthalamide and polyamide, reinforced with fiberglass, which is reported in work [1]. However, the study focused on stationary conditions, so the issue of the dynamic tribological conditions was not considered by the authors.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…One of the components that support the DSSC working process is a transparent conductive oxide (TCO). Transparent conducting oxide is a thin layer of metal oxide that has high electrical conductivity and optical transparency [1]. Besides supporting the DSSC working process, this TCO can also be applied in the daily activity such as sensors, solar 39.…”

Section: Introductionmentioning

confidence: 99%

Design of mated parts using polymeric materials with enhanced tribotechnical characteristics

Kobets

Аулин

Derkach

et al. 2020

EEJET

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This paper reports a comparative study of the polymeric materials operating in conjugation with steel. In agricultural engineering, a significant role in structural materials belongs to polymer composites. This type of material is characterized by the low price, small technological cost, as well as acceptable processing characteristics. It has been found that it is necessary to form, for each type of mated parts, a set of materials that could maximally meet the operational conditions. To describe the operating conditions in more detail, they need to be generalized for the specific tribological and loading characteristics. Based on this, such load regimes were selected that correspond to the movable mated parts in sowing complexes. For these mated parts, it was necessary, in the course of the tribological study, to choose a material with minimal technological deviations but with enhanced tribotechnical characteristics. The result of this study has established that under the predefined conditions a polymer-composite material with the high-modulus filler PA-6.6+30 % F demonstrates the best tribophysical characteristics compared to the material PA-6.6. The proposed material, in conjugation with steel 1.1191, has a friction coefficient that is 38...41 % lower, while the temperature in the contact area is 8...12 % less, than that in conjugation with the material PA-6.6. Based on the metallographic analysis of friction surfaces, one can argue that a polymer composite with a high-modulus filler creates favorable conditions for their implementation in the moving units of machines. The results reported here make it possible to analyze and synthesize composite materials primarily for agricultural engineering, taking into consideration their tribological properties. The findings may be particularly interesting for service departments and enterprises producing parts for sowing complexes

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“…The easy formation of complex shapes by the use of fillers, dyes or foaming agents allows the combination of materials with different properties. For these reasons plastics are widely used in all areas of the economy, to some extent replacing metal, glass, wood or ceramics [6][7][8]. Unfortunately, the resulting wastes are characterized by a different chemical composition and, consequently, different properties.…”

Section: Introductionmentioning

confidence: 99%

Tribo-Electrostatic Separation Analysis of a Beneficial Solution in the Recycling of Mixed Poly(Ethylene Terephthalate) and High-Density Polyethylene

et al. 2021

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The aim of this study was to investigate and analyze the impact of selected parameters during the tribocharging process of shredded poly(ethylene terephthalate) (PET) and high-density polyethylene (PE-HD) plastics on accumulated electric charge and electrostatic separation effectiveness. The accumulation of electric charge on surfaces of polymer particles as a result of their circular motion forced by the airflow cyclone container was investigated. The impact of the container material, time of tribocharging and the airflow intensity were experimentally examined. A container in which the particles of the considered polymers are electrified with opposite charges was selected. A high ability to accumulate surface charge on small particles of both polymers was demonstrated. The electrified mixed PET/PE-HD was subjected to a separation process. An electrostatic separator designed and constructed by the authors was used for to the separation. In turn, to assess the effectiveness of this separation, a dedicated vision system was used. Based on the result of the carried out tests, it has been assumed that the proposed approach’s effectiveness has been demonstrated by means of empirical validation.

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Analysis of the mechanical properties of polymer composites for the production of machine parts used as substitutes for elements obtained from metals

Cited by 5 publications

References 1 publication

Quality improvement of gear wheels obtained from polymer materials by shaving process

Quality improvement of gear wheels obtained from polymer materials by shaving process

Design of mated parts using polymeric materials with enhanced tribotechnical characteristics

Tribo-Electrostatic Separation Analysis of a Beneficial Solution in the Recycling of Mixed Poly(Ethylene Terephthalate) and High-Density Polyethylene

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