Browsing by Author "Kanik, Mehmet"

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An investigation on the thermal and solar properties of graphene-coated polyester fabrics
(MDPİ, 2021-02-01) Manasoglu, Gizem; MANASOĞLU, GİZEM; Celen, Rumeysa; ÇELEN, RUMEYSA; Kanik, Mehmet; KANIK, MEHMET; Ulcay, Yusuf; ULCAY, YUSUF; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 0000-0002-1504-8694; 0000-0002-2972-8295; JTS-3559-2023; AAI-8441-2021; AAI-8087-2021; IZE-4329-2023
In this study, coatings were made with graphene nanopowder in two different thicknesses (0.1 and 0.5 mm) at three different concentrations (50, 100 and 150 g/kg) on polyester woven fabrics. The effects of the coating thickness and graphene concentration were examined with optical and scanning electron microscopy (SEM) images. The thermal stability properties of the samples were also evaluated by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). Thermal conductivity was evaluated with two different principles: contact and radiant heat transfer, according to JIS R 2618 and EN ISO 6942, respectively. Solar measurements were performed with a Shimadzu UV-3600 Plus spectrophotometer. The graphene coating improved the thermal stability of the polyester fabrics. The solar absorbance value increased by 80% compared to reference fabrics, and reached approximately 90%. One of the important results was that the thermal conductivity coefficient increased by 87% and 262% for the two coating thicknesses, respectively.
The effects of vacuum steaming process parameters on tenacity properties of cotton and viscose yarns
(Ege Üniversitesi, 2011) Şardaǧ, Sibel; Özdemir, Özcan; Kanik, Mehmet; Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 0000-0003-2494-6485; 0000-0001-9177-0059; B-1488-2019; AAY-8629-2021; 23467956700; 8577587200; 6602352034
In this study, the effects of vacuum steaming process parameters (temperature and duration) on tenacity properties of 100% cotton and 100 % viscose yarns were studied. For this purpose, the yarns with different twisting coefficients and numbers were twisted and exposed to vacuum steaming at different temperatures and for durations appropriate to their raw material properties. Tenacity properties of the yams were measured before and after vacuum steaming. The results obtained were assessed by means of SPSS statistical analysis program. Variation analysis and SNK test were carried out at 5% (0.05) level of significance. As a result of this study, it can be inferred that vacuum steaming temperature has significant effect on tenacity properties of 100 % cotton and 100 % viscose yarns but vacuum steaming duration has been found to be statistically insignificant on tenacity properties of cotton yams, and viscose yams.
The effects of various lubricants on the friction properties of sewing threads
(Sage Publications, 2013-07) Gürarda, Ayça; Yükseltan, Esra; Kaplangìray, Binnaz Meriç; Kanik, Mehmet; Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 35609709500; 55103172700; 55102796200; 6602352034
This paper describes an experimental investigation into the effects of different types and amounts of lubricants on the friction properties of sewing threads. In this work, four types of sewing threads, CO, PET-spun, core-spun (PET/PET) and core-spun (PET/CO) were used. Three different lubricant types and lubricant feeding rates (0.5, 1 and 2g/min) were applied to the sewing threads. The results of the research show that the type and amount of lubricant have important effects on the friction of the sewing threads. The friction coefficient values of all sewing thread types with paraffin-based lubricant were the lowest among the lubricants. As the amount of paraffin wax in the lubricants increased, the fiber/metal friction forces slightly decreased. To obtain the lowest friction coefficient, a 0.5g/min lubricant feeding rate and a 2.5-3% lubricant amount should be used for sewing threads.
The effect of graphene coating on surface roughness and friction properties of polyester fabrics
(Kaunas Univ Tech, 2021-01-01) Manasoglu, Gizem; Celen, Rumeysa; Akgün, Mine; Kanik, Mehmet; Manasoglu, Gizem; MANASOĞLU, GİZEM; Celen, Rumeysa; ÇELEN, RUMEYSA; Akgün, Mine; AKGÜN, MİNE; Kanik, Mehmet; KANIK, MEHMET; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 0000-0002-1504-8694; 0000-0002-2972-8295; JTS-3559-2023; JHT-0825-2023
In this article, the surface roughness and friction coefficient values of graphene coated fabrics were examined. Fabrics were coated with three different graphene concentrations (5 %, 10 % and 20 %) with the knife-over-roll principle. The surface roughness of samples was measured by Accretech Surfcom 130A. Various surface roughness parameters of the coated fabrics were evaluated. Static and kinetic friction coefficients of coated fabrics were measured by Labthink Param MXD-02 friction tester using the standard wool abrasive cloth. It was observed that the coating concentration affected the frictional and roughness properties of fabrics. Experimental results showed that fabric surface roughness and friction coefficient values decreased significantly, especially at 20 % concentration. It was concluded that the coated fabrics produced could be used in applications such as anti-wear clothing.