Abstract
Textile clothing coated with silica aerogels has the potential of thermal insulation performance for heating and cooling. This work investigated the thermal isolation properties of untreated and treated three-layered weft-knitted spacer fabrics with different thicknesses (2 mm, 3 mm, and 4 mm) by using silica aerogels. Three samples of spacer fabrics (300GSM, 350GSM, 540GSM) were coated with nanoporous silica aerogel at a 26°C temperature and then kept for aging, exchanging the solvent, surface modification. The characteristics, for example, thermal resistance, thermal conductivity, yarn arrangement angle, porosity, and air permeability of spacer fabric samples, were investigated. Scanning electron microscopy analysis and Fourier transform infrared spectroscopy–attenuated total reflection test were conducted to explore the surface morphology and surface changes initiated by the silica coating. The experimental results indicated that the treated weft-knitted spacer fabrics with 350GSM have a higher thermal resistance of 0.09131 m2 K W−1, higher porosity ratio, higher air permeability, higher arrangement angle, and lower density. The statistical analysis also verified the significant performance (p = 0.000) of treated fabric samples at the 0.05 level.
Highlights
In recent years, the use of high-performance textiles has been increased due to the high demand in comfort, health care, and safety of living beings.[1]
Measurements of thermo-physiological comfort and its effectiveness in three types of weft-knitted spacer fabrics integrated with SAs were performed under standard conditions, BS1051, at 20°C and 65% relative humidity
According to the results of thermal isolation properties of silica coating, it is observed that the structures of fabric samples and the chemical composition of SA have in primitive influence to the higher thermal resistance of silica coating on the surfaces of the spacer fabrics samples
Summary
The use of high-performance textiles has been increased due to the high demand in comfort, health care, and safety of living beings.[1]. To verify the performances of these fabric samples, the results were analyzed through add-on %, SEM, FTIR, yarn arrangement angle, porosity, thermal insulation, and air permeability test. The untreated and treated fabric samples with higher porosity ratio have a higher thermal resistance.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
