Thermal Storage/Release and Mechanical Properties of Phase Change Materials on Polyester Fabrics

Abstract

Melamine formaldehyde microcapsules containing octadecane are synthesized by the interfacial polymerization method, and the size, shape, and thermal storage/release prop erties of the synthesized microcapsules are analyzed by FTIR, SEM, and DSC. Polyester fabrics are then coated with the microcapsules under various conditions of concentration and time/temperature by the knife-over-roll (KOR) and screen printing (SP) methods. The thermal, mechanical, and physical properties of the untreated and treated fabrics are evaluated to identify the best adhesive method. The mean diameter of the microcapsules ranges from 1 to 1.5 μm, and their shapes are almost spherical. Under the optimum treatment concentration, temperature, and time, thermal properties after five launderings decrease rapidly, and the bending and shear rigidities of the KOR fabrics are higher than those of the sp fabrics. This means that fabrics coated by sp become less stiff and hard than those by KOR. sp fabrics exhibit higher air permeability and lower hygroscopic properties than KOR fabrics.

Faz Değiştiren Maddeler ve Tekstil Uygulamaları

“…Kim ve Cho (2002), oktadekan içeren poliüre mikrokapsüller üretmiþlerdir [22]. Choi ve Cho ise oktadekaný melamin formaldehit polimer içinde mikrokapsülle-miþlerdir [23]. Deveci ve Baþal, n-eikosan içeren ipek proteini ve kitosan esaslý ýsý depolama özellikli mikrokapsüller üretmiþlerdir [24].…”

“…Kumaþlara mikrokapsüllenmiþ FDM uygulamasý konusunda yapýlan çalýþmalar incelendiðinde ise genellikle kaplama [23,36] ve emdirme yöntemleri [27,28,37] üzeri-ne araþtýrmalar yapýldýðý görülmektedir. Kaplama yönte-minde, kaplama bileþeni hazýrlamak için FDM içeren mikrokapsüller yüzey aktif madde, disperse edici madde, anti köpük ve polimer karýþýmý içeren sulu çözelti dispersiyonu içerisine disperse edilmekte ve ýslanmaktadýr.…”

The Manufacture of Microencapsulated Thermal Energy Storage Compounds Suitable for Smart Textile

“…Thus, n-alkanes were preferred due to their high latent heat, and they are chemically inert, non-toxic, non-corrosive and non-hygroscopic. Thus, n-eicosane (Sarier & Onder, 2007a), n-octodecane (Pause, 2001;Shim et al, 2001;Choi et al, 2004;Li & Zhu, 2004;Chung & Cho, 2004;Zhang et al, 2005bZhang et al, , 2006 and n-hexadecane (Shim et al, 2001;Sarier & Onder, 2007a are the most PCMs chosen to be applied. In these studies, pure compound was used as PCM material and therefore the phase change occurs in a narrow temperature change at the melting temperature of the n-alkane.…”

Moisture Responded Transformable Property Of Intelligent Coolness Knitted Fabrics For Sportswear Clothings

“…Mather [6], in his review paper on intelligent textile, proposed that a breathable fabric, PCM, shape memory materials, including thermochromism or photochromism, can be applicable to intelligent textiles. Many studies [2][3] [7]~ [9] related to the PCM have been carried out. Choi et al [2] investigated the thermal storage/release properties of PET fabric using PCM, and Choi et al [3] studied the clothing temperature changes of a PCM-treated warm-up garment.…”

“…Many studies [2][3] [7]~ [9] related to the PCM have been carried out. Choi et al [2] investigated the thermal storage/release properties of PET fabric using PCM, and Choi et al [3] studied the clothing temperature changes of a PCM-treated warm-up garment. Mondal [7] surveyed PCM for smart textiles as an overview paper.…”