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Comparative Thermal Behaviour Study of Thermal Layers Made Out of Woven and Nonwoven Fabric Using FR Viscose and p-Aramid Fibres

Chauhan Shweta, Parmar M. S., Sisodia Nidhi

Fibres & Textiles in Eastern Europe

2023

Vol. 31, no. 4

83--89

Nine 1/1 plain weave fabric samples were developed using various combinations of low-twist ring spun yarns and rovings of FR viscose, p-aramid, and their blends. The three woven combinations were yarn/yarn, yarn/roving, and roving/roving. These fabric samples were compared for mechanical and thermal properties with needle-punched non-woven fabric samples. The radiant heat transfer index (RHTI24) and convective heat transfer index (HTI24) of the woven and non-woven fabrics were determined. In all samples, the HTI24 - HTI12 and RHTI24 - RHTI12 values were more than 4 seconds, which suggested that there was enough time between experiencing pain and sustaining second-degree burns.

Effect of Pretreatment on the Smoothness Behaviour of Cotton Fabric

Sisodia Nidhi, Parmar M. S., Jain Saurbh

Fibres & Textiles in Eastern Europe

2019

Vol. 27, no. 5 (137)

47--52

Before dyeing, woven cotton fabrics have been passed through different pretreatments like desizing, scouring, bleaching and mercerising to enhance quality. In every treatment cotton fabric is treated with different chemicals and mechanical processes. After these treatments, the feel of the fabric has been changed. The change in feel or in terms of the hand value of treated fabrics were analysed by determining the bending length, crease recovery angle, SEM, FTIR, surface roughness and smoothness properties. Other physical properties viz. the tear and tensile strength were also evaluated. Fabric surface roughness and smoothness were determined using the Kawabata Evaluation System (KES) and digital image processing method. Using MATLAB software, digital image processing techniques were used to evaluate the roughness index. The study revealed that the pretreatment process alters the fabric surface. Statistical analysis (ANOVA) was carried out using SPSS software in order to establish the relationship between the pretreatment process effect on the bending length, smoothness and crease recovery angle.

W celu poprawy jakości tkaniny bawełniane przed barwieniem poddawane są obróbce wstępnej składającej się z następujących etapów: odklejanie, szorowanie, wybielanie i merceryzowanie. Podczas każdego etapu tkanina bawełniana jest poddawana różnym procesom chemicznym i mechanicznym. Przebadano tkaniny SEM, FTIR, określono chropowatości powierzchni i gładkość. Oceniono również wytrzymałość na rozdarcie i rozciąganie. Chropowatość i gładkość powierzchni tkaniny określono przy użyciu Kawabata Evaluation System (KES), metody cyfrowego przetwarzania obrazu i oprogramowania MATLAB. Badanie ujawniło, że proces obróbki wstępnej zmienia powierzchnię tkaniny. Wyniki badań poddano analizie statystycznej.