Wyniki wyszukiwania - BazTech

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Evaluation of flammability by the oxygen index of selected composites based on epoxy resin

Jagiełowicz Patrycja Ewa, Połowniak Piotr, Wiśniewska Kama, Wiśniewski Patryk, Nieckarz Piotr, Basara-Wiśniewska Wioletta

Mechanik

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2023

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R. 96, nr 8-9

59--62

EN

The article presents the results of flammability tests of composite materials based on epoxy resin. Natural linen, jute and carbon fiber were used as a reinforcement. The samples were made in the vacuum infusion process. The tests were also carried out for the granulated cork material. Flammability tests were carried out using the determination of the oxygen index value in accordance with ASTM D 2826-06a, ISO 4589, part 2: 1996. The tests made it possible to determine the extent to which the tested materials are fire hazardous.

PL

W artykule przedstawiono wyniki badań palności materiałów kompozytowych na osnowie z żywicy epoksydowej. Jako zbrojenie użyto tkaniny z włókien: lnu, juty oraz włókna węglowego. Próbki były wykonywane w procesie infuzji próżniowej. Badania przeprowadzono również dla materiału z korka granulowanego. Badania palności przeprowadzono za pomocą oznaczenia wartości indeksu tlenowego zgodnie z normą ASTM D 2826-06a, ISO 4589, część 2: 1996. Badania pozwoliły określić, w jakim stopniu wybrane materiały są niebezpieczne pożarowo.

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Comparison of selected strength tests of glasses frames made of composite reinforced with natural fiber and polymer material

Bąk Łukasz, Jagiełowicz Patrycja Ewa, Połowniak Piotr, Wiśniewska Kama, Wiśniewski Patryk, Nieckarz Piotr

Mechanik

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2023

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R. 96, nr 8-9

42--47

EN

The article presents selected strength tests of glasses frames made of a composite reinforced with natural fiber. In addition, one test sample was commercial frames made of polymer material. The tests included: temple bending, three-point bending of the temples, bending of the temple ends and low-cycle fatigue test of the frame-temple connection.

PL

W artykule omówiono wybrane przeprowadzone badania wytrzymałościowe opraw okularów wykonanych z kompozytu zbrojonego włóknem naturalnym. Dodatkowo jedną badaną próbką były oprawy handlowe wykonane z tworzywa polimerowego. Badania obejmowały: rozginanie zauszników, zginanie trójpunktowe zauszników, odginanie końcówek zauszników oraz badanie zmęczeniowe niskocyklowe połączenia oprawy z zausznikiem.

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Effect of fiber content on tensile and flexural strength of water lily fiber reinforced polyester resin composite

Mesfin Solomon, Rengiah Robinson Gnanadurai, Shiferaw Melese, Guadie Tesfa

Composites Theory and Practice

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2023

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R. 23, nr 3

113--117

EN

Ethiopia has abundant invasive aquatic plants like water hyacinth and water lily. Large masses of these invasive plants have a negative impact on the country’s water bodies, specifically at Lake Tana in Ethiopia, by infesting and deteriorating water quality and reducing the quantity of water. In this research work, an attempt was made to fabricate a natural fiber reinforced composite in which water lily fiber was used as the reinforcing material in a polyester resin matrix. Chopped water lily fiber reinforced polyester resin composites were prepared by varying the fiber content - 20, 40 and 60 wt.%. Mechanical properties such as tensile strength and flexural strength were tested as per ASTM standards to evaluate the influence of the fiber contents. The experimental results show that an increase in the fiber content enhanced the mechanical properties of the water lily fiber reinforced polyester composite. It was found that the composite with 40 wt.% fiber exhibited superior strength which could be suitably used for different applications.