Abstract
The paper discusses the thermophysiological comfort of a newly developed fabric potentially for firefighter's protective clothing. The fabrics were developed by incorporating super hydrophobic silica aerogel nanoparticles in 65/35 wool-Aramid blended fabric. Then the theromophysiological comfort was analyzed by determining air, moisture and heat transfer performance. It has been found that only 2% coating of aerogel nanoparticle increases thermal resistance by up to 68.64% and can reduce air permeability by up to 45.46% whereas 4% aerogel coating can reduce 61.76% air permeability. Moisture management properties of the aerogel coated fabric have also been investigated and discussed in details. In brief, it can be said that the thickener that was used for the coating, has a positive impact on moisture transportation and overall moisture management property of the fabric. Again aerogel coated next-to-skin layer and aerogel coated outer layer acted differently on the same fabric. It was observed that, the coated fabric acts as more likely as a moisture management fabric when the coating was applied on next-to-skin surface.
Highlights
Clothing is the primary protection for mankind against extreme cold or hot environmental situations
This paper investigates the air, moisture and heat transfer properties of superhydrophobic aerogel nanoparticle coated fabrics as to analyze the thermophysiological comfort of the wearer
65/35 wool/Aramid blended fabric of around 230 g/m2 was coated with different percentages of “NANOGEL” by using an acrylic binder. 2%, 4% and 8% aerogel coated fabric were produced where the average viscosity of the coating paste was 20,000 to 30,000 centipoise
Summary
Clothing is the primary protection for mankind against extreme cold or hot environmental situations. The paper investigates the applicability of aerogel incorporated fabric for firefighter’s garments considering the wearer comfort in respect of moisture, air and heat transfer properties. Recent advancement of aerogel science has made it possible to produce flexible aerogel in simpler ways [12, 17,18,19] All these indicate the bright prospect of aerogels in fire-fighting garments for thermal insulation and protection. Thermophysiological Comfort Analysis of Aerogel Nanoparticle Incorporated Fabric for Fire Fighter’s Protective Clothing textiles increases with their moisture content and air velocity [21, 24]. This paper investigates the air, moisture and heat transfer properties of superhydrophobic aerogel nanoparticle coated fabrics as to analyze the thermophysiological comfort of the wearer
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