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RISS 인기검색어
- 검색키워드
- 저자 : Kam-Hong Chau (검색결과 3 건)
- 무료
- 기관 내 무료
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Instrumental and Sensory Evaluations of Drying and Stickiness Properties of Fabrics
Kam-Hong Chau,Chi-wai Kan 한국섬유공학회 2019 Fibers and polymers Vol.20 No.1
Drying and stickiness of textile fabrics on skin are crucial factors that affect the wear comfort. In this review, we discuss the current assessment methods for drying and stickiness properties of textile materials. The scope of this study includes methods that involve instrumental setups as well as perception assessments. Our analysis focuses on the comparisons between current experimental methods. The comparisons include materials used for setups, operation procedures and parameters evaluated. While there is room to further develop measurement of drying and stickiness properties of fabrics, recommendations are made for each of these factors. These suggestions could help future development of the measurement methods and also fabric materials development.
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Constant Power Drying Rate Tester: Measurement of Water Evaporation from Textiles with Heat
Kam-Hong Chau,Ka-Po Maggie Tang,Nga-Fong Lam,Chi-wai Kan 한국섬유공학회 2018 Fibers and polymers Vol.19 No.10
Water evaporation from textiles is important for wear comfort, especially for sportswear, casual wear and underwear. Constant Power Drying Rate Tester (CPDRT) offers fast (< 30 minutes) and versatile measurement of drying rate of fabrics. The operating temperature and water supply rate of CPDRT are adjustable to simulate required skin temperature and sweat rate, respectively. Change in weight of the fabric is continuously measured on a heated plate. This allows real-time observation of the entire drying process when fabric is placed on a heated plate supplied with constant power. This provides comprehensive information which is useful for fabric development. A set of 28 fabrics was tested by CPDRT. The temperature of bare sample stage is 37 oC and water delivery rate is set at 10 ml/hr. The key parameter, drying rate (DRCP), ranges from 0.32 to 1.69 ml/hr. Statistical tests are conducted to verify the validity and repeatability of CPDRT.
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Magnitude Estimation Approach for Assessing Stickiness Sensation Perceived in Wet Fabrics
Ka-Po Maggie Tang,Kam-Hong Chau,Chi-wai Kan,Jin-tu Fan 한국섬유공학회 2018 Fibers and polymers Vol.19 No.11
Sweating will trigger stickiness sensation and affecting sensorial comfort of wearer. This study aims at assessing stickiness sensation perceived in wetted fabrics utilizing the Body Movement Simulator (BMS). BMS was built to drive the samples to and fro subject’s volar forearms, providing repeatable fabric movement. Assessors were asked to compare the sample with the reference and assign numerical value to the sample using the magnitude estimation approach. 22 types of fabrics with different constructional parameters and fiber content were assessed by 23 assessors. Statistical analysis shows that within-judge reliability and between-judge consistency are satisfactory, and significant between-fabric differences are observed, demonstrating that both experimental method and assessor panel are reliable. The results reveal that thicker fabrics with higher absorption capacity and less contact area with skin contribute to weaker stickiness sensation. The perceived stickiness is highly related to water content and saturation level of samples, but poorly related to its surface friction and roughness in dry condition. This subjective assessment method is useful for assessing the stickiness sensation in textiles especially for sportswear, intimate apparel or hygiene products.
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