Wyniki wyszukiwania - BazTech

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Effect of batched water exposed to a constant magnetic field on the properties of concrete filled with waste fly ash, phosphogypsum and starch

Miękoś Ewa, Klepka Tomasz, Zieliński Marek, Sroczyński Dariusz, Garbacz Łukasz, Fenyk Anna, Łukawska Anna

Polimery

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2022

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Vol. 67, nr 2

53--60

EN

The influence of batched water exposed to a constant magnetic field (B = 1 T) on the properties of concrete was investigated. Fillers such as coal fly ash (CFA), phosphogypsum (PB) and native potato starch dispersed in epoxy resin [EP(S)], were used to obtain concrete based on Portland cement (PC). The magnetized batched water had a positive effect on the properties of concrete, reducing water absorption and increasing flexural and compressive strengths. The obtained concrete is a new promising building material that can be used to manufacture e.g. building foundations, flush-mounted installations and insulation layers.

PL

Zbadano wpływ wody zarobowej poddanej działaniu stałego pola magnetycznego (B = 1 T) na właściwości betonu. Do wytwarzania betonu na bazie cementu Portlandzkiego (PC) użyto napełniaczy takich jak popiół lotny ze spalania węgla (CFA), fosfogips (PB) i natywna skrobia ziemniaczana zdyspergowana w żywicy epoksydowej [EP(S)]. Zastosowanie namagnetyzowanej wody zarobowej wpłynęło korzystnie na właściwości betonu zmniejszając jego nasiąkliwość oraz zwiększając wytrzymałość na zginanie i ściskanie. Otrzymany beton jest nowym, obiecującym materiałem budowlanym z którego można wytwarzać np. fundamenty budynków, instalacje podtynkowe i warstwy izolacyjne.

2

UV Degradation Influence on the Selected Physical Properties of Extruded PVC/Ceramic Composites

Tor-Świątek Aneta, Garbacz Łukasz

Advances in Science and Technology. Research Journal

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2022

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Vol. 16, no 3

282--294

EN

This paper presents a study of PVC-ceramic composites obtained by twin-screw extrusion. Properties such as colour, wettability, tensile strength, elongation at break and impact tensile strength were studied. Moreover, the composite samples were subjected to UV degradation process and the influence of the composite composition therefore the degradation process on the mentioned properties has been determined. The study showed the dependence of the ceramic content in the material and its granulation on the individual properties. The research showed a significant influence of degradation on the colour and wettability of samples containing ceramic filler with granulation 0.25-0.5 mm, and in the case of tests of mechanical properties, this influence is the greatest for samples with filler with grain size 0.5-1.25 mm. Additionally, the aging process significantly influenced obtained results.

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The Influence of the Aging Process on the Change of Selected Strength Properties of Polypropylene Compositions with Mineral Fillers

Garbacz Łukasz, Klepka Tomasz, Longwic Filip

Advances in Science and Technology. Research Journal

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2021

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Vol. 15, no 2

65--74

EN

The goal is to understand the influence of minerals fillers on the course and performance of process of injection molding polypropylene compounds as well as on the mechanical properties of the obtained products. Three types of mineral fillers, derived from post-production waste, were used for testing. It was aluminosilicate (zeolite), fly ash and gypsum powder, all in powder form. The minerals fillers were introduced into the tested PP in a mechanical mixing process prior to the processing. During the injection molding process, inorganic fillers are subject to the same steps as plastic processing, compression, homogenization, transport. Organic fillers used in the injection process were introduced into the processed PP in the amount of 30% by weight. The test stand consists of a screw injection molding machine, Arburg AllRounder 320C. The research on the structure of manufactured materials, mechanical strength, impact resistance and hardness are presented. The laboratory tests of accelerated aging were conducted using an aging chamber. The aging temperature in the heat chamber was set to even amount of 63 oC and irradiance 0,51 W/m2. According to the standard, the aging time has been applied accordingly: 120, 240, 360 h, which conform to degradation at room temperature for 4 month, 8 month and one year. It was found that the type of mineral fillers used did not have a significant influence on the hardness of the surface of the moldings. The changes in hardness shown in the figures are primarily influenced by the properties and type of polymers used during the injection process. During the tests, differences in the mechanical strength of composites for injection molded parts made of PP with mineral fillers were observed. Filling PP with zeolite in the tested value causes a decrease in mechanical strength by an average of 10% from 24 to 21.6 MPa. Different mechanical interactions are shown by flying ash and gypsum powder fillers, increasing mechanical resistance of the composition. Flying ash increases mechanical strength by 30% on average, from 24 to 31.2 MPa. In case of gypsum powder application the resistance of PP composition increases analogically, but on average 20 %, to 29,5 MPa.

4

Charakterystyki wytwarzania folii polimerowych w procesie wytłaczania z rozdmuchiwaniem

Białasz Sebastian, Garbacz Łukasz

Mechanik

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2019

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R. 92, nr 4

230--233

PL

W artykule przedstawiono specyfikę procesu wytłaczania z rozdmuchiwaniem tworzyw termoplastycznych. Scharakteryzowano metody wytłaczania z uwzględnieniem możliwości otrzymywania wyrobów o żądanej charakterystyce. W badaniach wytłaczania z rozdmuchiwaniem folii zastosowano polietylen PE-LD Malen-E. Przeprowadzono obszerne badania procesu wytłaczania oraz wybranych właściwości użytkowych otrzymanej folii.

EN

In the article specification of blown film extrusion process of thermoplastics was presented. Methods of extrusion subject to products with determine characteristic received in the process where characteristic. In the research, extrusion blow molding process used polyethylene film PE-LD Malen-E were used. Extensive studies of the extrusion process and selected properties of polymer films were used.