Abstract
In this work, a new approach to apply silica aerogel into nonwoven textiles by using laser engraving and laminating technique was proposed. Thermal performance of the prepared composites were characterized in terms of infrared thermal images, maximum heat flux and heat retention ability. Results showed that in comparison to regular composites the air pockets lead to 0.5°C lower temperature on the fabric surface, and the aerogel-encapsulated structure results in a decrease of 1.04-1.47°C in the fabric temperature. It was also noticed the aerogel-encapsulated composites have slightly lower qmax value and a thermal feeling, however, samples with air pockets showed increased value in qmax, and the increasing rate was strongly related to the composites thickness. Composites with air pockets exhibited better ability to retain heat, the highest heat retention ability was observed from composites with aerogel-encapsulated structure.
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