Development of coated fabric structures which reflect infrared rays

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Thesis Type: Postgraduate

Institution Of The Thesis: Uludağ Üniversitesi, Turkey

Approval Date: 2017

Thesis Language: Turkish

Student: SEMİH SORUÇ

Supervisor: MEHMET KANIK

Open Archive Collection: AVESIS Open Access Collection

Abstract:

The primary goal of the thesis study is investigation of near infrared rays reflection behaviours of pigments that can be used as colorants especially in coated roller blind fabrics and in various areas where protection against sun rays and energy saving are important such as tents, tarpaulins, awning, light roof materials that consist of textile based coated materials. For this purpose, experimental studies were made for comparatively examination of solar rays reflection (solar reflectance), absorption and transmittance properties of organic pigments (black, yellow, blue, green and brown), iron oxide pigments and infrared reflective special pigments that have different colors (black, yellow, blue, green and brown) at different concentration values (1, 5, 10, 20 and 30 g/kg). The behaviors against solar radiation of the samples obtained by acrylic based coatings on 100% polyester fabrics with roller knife coating technique and also some physical properties of these samples such as thickness, weight in grams and amount of transferred coating material were examined. The behaviours against solar radiation of the coated samples were evaluated with UV transmittance (Tuv), visible light transmittance (Tv), solar transmittance (Ts), visible light reflectance (Rv), solar reflectance (Rs), solar absorbance (As) and infrared ray reflectance (RIR) parameters that obtained from measurements on a UV-VIS-NIR spectrophotometer operating according to EN 14500:2008 standard and the results which are calculated according to EN 410 standard. The results obtained are as follows: iron oxide pigments according to organic pigments except yellow color; except for the blue color, the infrared reflector pigments according to the other two groups showed higher reflectance of the NIR rays, which cause the surfaces to overheat.